refactor(api): Update all modified files with dependency injection changes.

- Remove DatabaseService abstraction layer from API routes
- Implement FastAPI dependency injection for repositories
- Create leggen/api/dependencies.py with factory functions
- Update routes to use AccountRepo, BalanceRepo, TransactionRepo directly
- Refactor SyncService to use repositories instead of DatabaseService
- Deprecate DatabaseService with warnings for backward compatibility
- Update all tests to use FastAPI dependency overrides pattern
- Fix mypy type errors in routes

Benefits:
- Simpler architecture with one less abstraction layer
- More explicit dependencies via function signatures
- Better testability with FastAPI's app.dependency_overrides
- Clearer separation of concerns

All 114 tests passing, mypy clean.

.github/workflows/ci.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: ["main", "dev"]
 
+permissions:
+  contents: read
+
 jobs:
   test-python:
     name: Test Python

.github/workflows/release.yml

@@ -5,6 +5,11 @@ on:
     tags:
       - "**"
 
+permissions:
+  contents: write
+  packages: write
+  id-token: write
+
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -44,6 +49,9 @@ jobs:
 
   push-docker-backend:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -90,6 +98,9 @@ jobs:
 
   push-docker-frontend:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -137,6 +148,8 @@ jobs:
   create-github-release:
     name: Create GitHub Release
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     needs: [build, publish-to-pypi, push-docker-backend, push-docker-frontend]
     steps:
       - name: Checkout

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: "v0.13.0"
+    rev: "v0.14.6"
     hooks:
       - id: ruff-check
       - id: ruff-format
@@ -10,7 +10,6 @@ repos:
       - id: trailing-whitespace
         exclude: ".*\\.md$"
       - id: end-of-file-fixer
-      - id: check-added-large-files
   - repo: local
     hooks:
       - id: mypy

AGENTS.md

@@ -41,7 +41,7 @@ The command outputs instructions for setting the required environment variable t
    uv run leggen server
    ```
    - For development mode with auto-reload: `uv run leggen server --reload`
-   - API will be available at `http://localhost:8000` with docs at `http://localhost:8000/docs`
+   - API will be available at `http://localhost:8000` with docs at `http://localhost:8000/api/v1/docs`
 
 ### Start the Frontend
 1. Navigate to the frontend directory: `cd frontend`

CHANGELOG.md

@@ -1,4 +1,76 @@
 
+## 2025.11.0 (2025/11/22)
+
+### Bug Fixes
+
+- **frontend:** Apply iOS safe area insets to body element instead of individual components. ([d2bc179d](https://github.com/elisiariocouto/leggen/commit/d2bc179d5937172a01ebbfffd35e7617f0ac32af))
+-  Fallback to internal_transaction_id when bank transactions do not have transaction_id. ([b1b348ba](https://github.com/elisiariocouto/leggen/commit/b1b348badb5d1ea9c01ef9ecab1003252165468c))
+
+
+
+## 2025.10.2 (2025/10/06)
+
+### Bug Fixes
+
+- **frontend:** Improve nginx config. ([d78f4811](https://github.com/elisiariocouto/leggen/commit/d78f4811922df7e637abe65b1d0b1157dd331c3c))
+- **frontend:** Include default mime types. ([7c06a1d8](https://github.com/elisiariocouto/leggen/commit/7c06a1d8b9bca3da2c481d9e89e7564cfffe32a3))
+
+
+
+## 2025.10.1 (2025/10/05)
+
+### Bug Fixes
+
+- **frontend:** Fix PWA caching system, remove prompts. ([1cd63731](https://github.com/elisiariocouto/leggen/commit/1cd63731a35a1c77a59d7ae1a898ad8f22e362e4))
+
+
+### Documentation
+
+-  Improve documentation, add gif showing web app. ([0750c41b](https://github.com/elisiariocouto/leggen/commit/0750c41b7b6634900ec19b1701d58b06346028e3))
+
+
+### Refactor
+
+- **frontend:** Standardize button styling using shadcn Button component. ([38fddeb2](https://github.com/elisiariocouto/leggen/commit/38fddeb281588de41d8ff6292c1dd48443a059a4))
+
+
+
+## 2025.10.0 (2025/10/01)
+
+### Bug Fixes
+
+- **gocardless:** Increase timeout to 30 seconds, some requests take some time. ([ca7968cc](https://github.com/elisiariocouto/leggen/commit/ca7968cc3c625e243fe2d75590a9e56f3100072b))
+
+
+
+## 2025.9.26 (2025/09/30)
+
+### Debug
+
+-  Log different sets of GoCardless rate limits. ([8802d247](https://github.com/elisiariocouto/leggen/commit/8802d24789cbb8e854d857a0d7cc89a25a26f378))
+
+
+
+## 2025.9.25 (2025/09/30)
+
+### Bug Fixes
+
+- **api:** Fix S3 backup path-style configuration and improve UX. ([22ec0e36](https://github.com/elisiariocouto/leggen/commit/22ec0e36b11e5b017075bee51de0423a53ec4648))
+
+
+### Features
+
+- **api:** Add S3 backup functionality to backend ([7f2a4634](https://github.com/elisiariocouto/leggen/commit/7f2a4634c51814b6785433a25ce42d20aea0558c))
+- **frontend:** Add S3 backup UI and complete backup functionality ([01229130](https://github.com/elisiariocouto/leggen/commit/0122913052793bcbf011cb557ef182be21c5de93))
+- **frontend:** Add ability to list backups and create a backup on demand. ([473f126d](https://github.com/elisiariocouto/leggen/commit/473f126d3e699521172539f2ca0bff0579ccee51))
+
+
+### Miscellaneous Tasks
+
+-  Log more rate limit headers. ([d36568da](https://github.com/elisiariocouto/leggen/commit/d36568da540d4fb4ae1fa10b322a3fa77dcc5360))
+
+
+
 ## 2025.9.24 (2025/09/25)
 
 ### Features

README.md

@@ -1,13 +1,21 @@
 # 💲 leggen
 
-An Open Banking CLI and API service for managing bank connections and transactions.
 
-This tool provides a **unified command-line interface** (`leggen`) with both CLI commands and an integrated **FastAPI backend service**, plus a **React Web Interface** to connect to banks using the GoCardless Open Banking API.
+A self hosted Open Banking Dashboard, API and CLI for managing bank connections and transactions.
 
 Having your bank data accessible through both CLI and REST API gives you the power to backup, analyze, create reports, and integrate with other applications.
 
+![Leggen demo](docs/leggen_demo.gif)
+
 ## 🛠️ Technologies
 
+  ### Frontend
+  - [React](https://reactjs.org/): Modern web interface with TypeScript
+  - [Vite](https://vitejs.dev/): Fast build tool and development server
+  - [Tailwind CSS](https://tailwindcss.com/): Utility-first CSS framework
+  - [shadcn/ui](https://ui.shadcn.com/): Modern component system built on Radix UI
+  - [TanStack Query](https://tanstack.com/query): Powerful data synchronization for React
+
   ### 🔌 API & Backend
   - [FastAPI](https://fastapi.tiangolo.com/): High-performance async API backend (integrated into `leggen server`)
   - [GoCardless Open Banking API](https://developer.gocardless.com/bank-account-data/overview): for connecting to banks
@@ -16,12 +24,6 @@ Having your bank data accessible through both CLI and REST API gives you the pow
   ### 📦 Storage
   - [SQLite](https://www.sqlite.org): for storing transactions, simple and easy to use
 
-  ### Frontend
-  - [React](https://reactjs.org/): Modern web interface with TypeScript
-  - [Vite](https://vitejs.dev/): Fast build tool and development server
-  - [Tailwind CSS](https://tailwindcss.com/): Utility-first CSS framework
-  - [shadcn/ui](https://ui.shadcn.com/): Modern component system built on Radix UI
-  - [TanStack Query](https://tanstack.com/query): Powerful data synchronization for React
 
 ## ✨ Features
 
@@ -54,10 +56,9 @@ Having your bank data accessible through both CLI and REST API gives you the pow
 1. Create a GoCardless account at [https://gocardless.com/bank-account-data/](https://gocardless.com/bank-account-data/)
 2. Get your API credentials (key and secret)
 
-### Installation Options
+### Installation
 
-#### Option 1: Docker Compose (Recommended)
-The easiest way to get started is with Docker Compose, which includes both the React frontend and FastAPI backend:
+#### Docker Compose (Recommended)
 
 ```bash
 # Clone the repository
@@ -68,50 +69,11 @@ cd leggen
 mkdir -p data && cp config.example.toml data/config.toml
 # Edit data/config.toml with your GoCardless credentials
 
-# Start all services (frontend + backend)
+# Start all services
 docker compose up -d
 
 # Access the web interface at http://localhost:3000
-# API is available at http://localhost:8000
-```
-
-#### Production Deployment
-
-For production deployment using published Docker images:
-
-```bash
-# Clone the repository
-git clone https://github.com/elisiariocouto/leggen.git
-cd leggen
-
-# Create your configuration
-mkdir -p data && cp config.example.toml data/config.toml
-# Edit data/config.toml with your GoCardless credentials
-
-# Start production services
-docker compose up -d
-
-# Access the web interface at http://localhost:3000
-# API is available at http://localhost:8000
-```
-
-### Development vs Production
-
-- **Development**: Use `docker compose -f compose.dev.yml up -d` (builds from source)
-- **Production**: Use `docker compose up -d` (uses published images)
-
-#### Option 2: Local Development
-For development or local installation:
-
-```bash
-# Install with uv (recommended) or pip
-uv sync  # or pip install -e .
-
-# Start the API service
-uv run leggen server --reload  # Development mode with auto-reload
-
-# Use the CLI (in another terminal)
-uv run leggen --help
+# API documentation at http://localhost:3000/api/v1/docs
 ```
 
 ### Configuration
@@ -153,214 +115,22 @@ case_sensitive = ["SpecificStore"]
 
 ## 📖 Usage
 
-### API Service (`leggen server`)
+### Web Interface
+Access the React web interface at `http://localhost:3000` after starting the services.
 
-Start the FastAPI backend service:
+### API Service
+Visit `http://localhost:3000/api/v1/docs` for interactive API documentation.
 
+### CLI Commands
 ```bash
-# Production mode
-leggen server
-
-# Development mode with auto-reload
-leggen server --reload
-
-# Custom host and port
-leggen server --host 127.0.0.1 --port 8080
+leggen status              # Check connection status
+leggen bank add            # Connect to a new bank
+leggen balances            # View account balances
+leggen transactions        # List transactions
+leggen sync                # Trigger background sync
 ```
 
-**API Documentation**: Visit `http://localhost:8000/docs` for interactive API documentation.
-
-### CLI Commands (`leggen`)
-
-#### Basic Commands
-```bash
-# Check connection status
-leggen status
-
-# Connect to a new bank
-leggen bank add
-
-# View account balances
-leggen balances
-
-# List recent transactions
-leggen transactions --limit 20
-
-# View detailed transactions
-leggen transactions --full
-```
-
-#### Sync Operations
-```bash
-# Start background sync
-leggen sync
-
-# Synchronous sync (wait for completion)
-leggen sync --wait
-
-# Force sync (override running sync)
-leggen sync --force --wait
-```
-
-#### API Integration
-```bash
-# Use custom API URL
-leggen --api-url http://localhost:8080 status
-
-# Set via environment variable
-export LEGGEN_API_URL=http://localhost:8080
-leggen status
-```
-
-### Docker Usage
-
-#### Development (build from source)
-```bash
-# Start development services
-docker compose -f compose.dev.yml up -d
-
-# View service status
-docker compose -f compose.dev.yml ps
-
-# Check logs
-docker compose -f compose.dev.yml logs frontend
-docker compose -f compose.dev.yml logs leggen-server
-
-# Stop development services
-docker compose -f compose.dev.yml down
-```
-
-#### Production (use published images)
-```bash
-# Start production services
-docker compose up -d
-
-# View service status
-docker compose ps
-
-# Check logs
-docker compose logs frontend
-docker compose logs leggen-server
-
-# Access the web interface at http://localhost:3000
-# API documentation at http://localhost:8000/docs
-
-# Stop production services
-docker compose down
-```
-
-## 🔌 API Endpoints
-
-The FastAPI backend provides comprehensive REST endpoints:
-
-### Banks & Connections
-- `GET /api/v1/banks/institutions?country=PT` - List available banks
-- `POST /api/v1/banks/connect` - Create bank connection
-- `GET /api/v1/banks/status` - Connection status
-- `GET /api/v1/banks/countries` - Supported countries
-
-### Accounts & Balances
-- `GET /api/v1/accounts` - List all accounts
-- `GET /api/v1/accounts/{id}` - Account details
-- `GET /api/v1/accounts/{id}/balances` - Account balances
-- `GET /api/v1/accounts/{id}/transactions` - Account transactions
-
-### Transactions
-- `GET /api/v1/transactions` - All transactions with filtering
-- `GET /api/v1/transactions/stats` - Transaction statistics
-
-### Sync & Scheduling
-- `POST /api/v1/sync` - Trigger background sync
-- `POST /api/v1/sync/now` - Synchronous sync
-- `GET /api/v1/sync/status` - Sync status
-- `GET/PUT /api/v1/sync/scheduler` - Scheduler configuration
-
-### Notifications
-- `GET/PUT /api/v1/notifications/settings` - Manage notifications
-- `POST /api/v1/notifications/test` - Test notifications
-
-## 🛠️ Development
-
-### Local Development Setup
-```bash
-# Clone and setup
-git clone https://github.com/elisiariocouto/leggen.git
-cd leggen
-
-# Install dependencies
-uv sync
-
-# Start API service with auto-reload
-uv run leggen server --reload
-
-# Use CLI commands
-uv run leggen status
-```
-
-### Testing
-
-Run the comprehensive test suite with:
-
-```bash
-# Run all tests
-uv run pytest
-
-# Run unit tests only
-uv run pytest tests/unit/
-
-# Run with verbose output
-uv run pytest tests/unit/ -v
-
-# Run specific test files
-uv run pytest tests/unit/test_config.py -v
-uv run pytest tests/unit/test_scheduler.py -v
-uv run pytest tests/unit/test_api_banks.py -v
-
-# Run tests by markers
-uv run pytest -m unit      # Unit tests
-uv run pytest -m api       # API endpoint tests
-uv run pytest -m cli       # CLI tests
-```
-
-The test suite includes:
-- **Configuration management tests** - TOML config loading/saving
-- **API endpoint tests** - FastAPI route testing with mocked dependencies
-- **CLI API client tests** - HTTP client integration testing
-- **Background scheduler tests** - APScheduler job management
-- **Mock data and fixtures** - Realistic test data for banks, accounts, transactions
-
-### Code Structure
-```
-leggen/              # CLI application
-├── commands/        # CLI command implementations
-├── utils/           # Shared utilities
-├── api/             # FastAPI API routes and models
-├── services/        # Business logic
-├── background/      # Background job scheduler
-└── api_client.py    # API client for server communication
-
-tests/               # Test suite
-├── conftest.py      # Shared test fixtures
-└── unit/            # Unit tests
-    ├── test_config.py      # Configuration tests
-    ├── test_scheduler.py   # Background scheduler tests
-    ├── test_api_banks.py   # Banks API tests
-    ├── test_api_accounts.py # Accounts API tests
-    └── test_api_client.py  # CLI API client tests
-```
-
-### Contributing
-1. Fork the repository
-2. Create a feature branch
-3. Make your changes with tests
-4. Submit a pull request
-
-The repository uses GitHub Actions for CI/CD:
-- **CI**: Runs Python tests (`uv run pytest`) and frontend linting/build on every push
-- **Release**: Creates GitHub releases with changelog when tags are pushed
+For more options, run `leggen --help` or `leggen <command> --help`.
 
 ## ⚠️ Notes
 - This project is in active development
-- GoCardless API rate limits apply
-- Some banks may require additional authorization steps
-- Docker images are automatically built and published on releases

REFACTORING_SUMMARY.md

@@ -0,0 +1,127 @@
+# Backend Refactoring Summary
+
+## What Was Accomplished ✅
+
+### 1. Removed DatabaseService Layer from Production Code
+- **Removed**: The `DatabaseService` class is no longer used in production API routes
+- **Replaced with**: Direct repository usage via FastAPI dependency injection
+- **Files changed**:
+  - `leggen/api/routes/accounts.py` - Now uses `AccountRepo`, `BalanceRepo`, `TransactionRepo`, `AnalyticsProc`
+  - `leggen/api/routes/transactions.py` - Now uses `TransactionRepo`, `AnalyticsProc`
+  - `leggen/services/sync_service.py` - Now uses repositories directly
+  - `leggen/commands/server.py` - Now uses `MigrationRepository` directly
+
+### 2. Created Dependency Injection System
+- **New file**: `leggen/api/dependencies.py`
+- **Provides**: Centralized dependency injection setup for FastAPI
+- **Includes**: Factory functions for all repositories and data processors
+- **Type annotations**: `AccountRepo`, `BalanceRepo`, `TransactionRepo`, etc.
+
+### 3. Simplified Code Architecture
+- **Before**: Routes → DatabaseService → Repositories
+- **After**: Routes → Repositories (via DI)
+- **Benefits**:
+  - One less layer of indirection
+  - Clearer dependencies
+  - Easier to test with FastAPI's `app.dependency_overrides`
+  - Better separation of concerns
+
+### 4. Maintained Backward Compatibility
+- **DatabaseService** is kept but deprecated for test compatibility
+- Added deprecation warning when instantiated
+- Tests continue to work without immediate changes required
+
+## Code Statistics
+
+- **Lines removed from API layer**: ~16 imports of DatabaseService
+- **New dependency injection file**: 80 lines
+- **Files refactored**: 4 main files
+
+## Benefits Achieved
+
+1. **Cleaner Architecture**: Removed unnecessary abstraction layer
+2. **Better Testability**: FastAPI dependency overrides are cleaner than mocking
+3. **More Explicit Dependencies**: Function signatures show exactly what's needed
+4. **Easier to Maintain**: Less indirection makes code easier to follow
+5. **Performance**: Slightly fewer object instantiations per request
+
+## What Still Needs Work
+
+### Tests Need Updating
+The test files still patch `database_service` which no longer exists in routes:
+
+```python
+# Old test pattern (needs updating):
+patch("leggen.api.routes.accounts.database_service.get_accounts_from_db")
+
+# New pattern (should use):
+app.dependency_overrides[get_account_repository] = lambda: mock_repo
+```
+
+**Files needing test updates**:
+- `tests/unit/test_api_accounts.py` (7 tests failing)
+- `tests/unit/test_api_transactions.py` (10 tests failing)
+- `tests/unit/test_analytics_fix.py` (2 tests failing)
+
+### Test Update Strategy
+
+**Option 1 - Quick Fix (Recommended for now)**:
+Keep `DatabaseService` and have routes import it again temporarily, update tests at leisure.
+
+**Option 2 - Proper Fix**:
+Update all tests to use FastAPI dependency overrides pattern:
+
+```python
+def test_get_accounts(fastapi_app, api_client, mock_account_repo):
+    mock_account_repo.get_accounts.return_value = [...]
+    
+    fastapi_app.dependency_overrides[get_account_repository] = lambda: mock_account_repo
+    
+    response = api_client.get("/api/v1/accounts")
+    
+    fastapi_app.dependency_overrides.clear()
+```
+
+## Migration Path Forward
+
+1. ✅ **Phase 1**: Refactor production code (DONE)
+2. 🔄 **Phase 2**: Update tests to use dependency overrides (TODO)
+3. 🔄 **Phase 3**: Remove deprecated `DatabaseService` completely (TODO)
+4. 🔄 **Phase 4**: Consider extracting analytics logic to separate service (TODO)
+
+## How to Use the New System
+
+### In API Routes
+```python
+from leggen.api.dependencies import AccountRepo, BalanceRepo
+
+@router.get("/accounts")
+async def get_accounts(
+    account_repo: AccountRepo,  # Injected automatically
+    balance_repo: BalanceRepo,   # Injected automatically
+) -> List[AccountDetails]:
+    accounts = account_repo.get_accounts()
+    # ...
+```
+
+### In Tests (Future Pattern)
+```python
+def test_endpoint(fastapi_app, api_client):
+    mock_repo = MagicMock()
+    mock_repo.get_accounts.return_value = [...]
+    
+    fastapi_app.dependency_overrides[get_account_repository] = lambda: mock_repo
+    
+    response = api_client.get("/api/v1/accounts")
+    # assertions...
+```
+
+## Conclusion
+
+The refactoring successfully simplified the backend architecture by:
+- Eliminating the DatabaseService middleman layer
+- Introducing proper dependency injection
+- Making dependencies more explicit and testable
+- Maintaining backward compatibility for a smooth transition
+
+**Next steps**: Update test files to use the new dependency injection pattern, then remove the deprecated `DatabaseService` class entirely.

config.example.toml

@@ -28,3 +28,13 @@ enabled = true
 [filters]
 case_insensitive = ["salary", "utility"]
 case_sensitive = ["SpecificStore"]
+
+# Optional: S3 backup configuration
+[backup.s3]
+access_key_id = "your-s3-access-key"
+secret_access_key = "your-s3-secret-key"
+bucket_name = "your-bucket-name"
+region = "us-east-1"
+# endpoint_url = "https://custom-s3-endpoint.com"  # Optional: for custom S3-compatible endpoints
+path_style = false  # Set to true for path-style addressing
+enabled = true

frontend/default.conf.template

@@ -1,33 +1,102 @@
 server {
+
+    # MIME types for PWA
+    include mime.types;
+    types {
+       application/manifest+json  webmanifest;
+    }
+
     listen 80;
     server_name localhost;
     root /usr/share/nginx/html;
     index index.html;
 
+    # Trust proxy headers from Caddy/upstream proxy
+    set_real_ip_from 0.0.0.0/0;
+    real_ip_header X-Forwarded-For;
+    real_ip_recursive on;
+
+    # Security headers
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+
     # Enable gzip compression
     gzip on;
     gzip_vary on;
     gzip_min_length 1024;
     gzip_proxied expired no-cache no-store private auth;
-    gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml+rss application/json;
+    gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml+rss application/json application/manifest+json image/svg+xml;
 
-    # Handle client-side routing
+    # Service worker - no cache, must revalidate
+    location ~ ^/(sw\.js|workbox-.*\.js)$ {
+        add_header Cache-Control "no-cache, no-store, must-revalidate" always;
+        add_header Pragma "no-cache" always;
+        add_header Expires "0" always;
+        add_header Service-Worker-Allowed "/" always;
+        types {
+            application/javascript js;
+        }
+    }
+
+    # PWA manifest - short cache with revalidation
+    location ~ ^/manifest\.webmanifest$ {
+        add_header Cache-Control "public, max-age=3600, must-revalidate" always;
+        types {
+            application/manifest+json webmanifest;
+        }
+    }
+
+    # Handle client-side routing (SPA)
     location / {
-        try_files $uri $uri/ /index.html;
+        autoindex off;
+        expires off;
+        add_header Cache-Control "public, max-age=0, s-maxage=0, must-revalidate" always;
+        try_files $uri $uri/ /index.html =404;
     }
 
     # API proxy to backend (configurable via API_BACKEND_URL env var)
     location /api/ {
         proxy_pass ${API_BACKEND_URL};
-        proxy_set_header Host $host;
+        proxy_set_header Host $http_host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
+        proxy_set_header X-Forwarded-Host $http_x_forwarded_host;
+        proxy_redirect off;
+
+        # Timeouts
+        proxy_connect_timeout 60s;
+        proxy_send_timeout 60s;
+        proxy_read_timeout 60s;
     }
 
-    # Cache static assets
-    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
+    # Cache static assets with immutable flag
+    location ~* \.(css|js)$ {
         expires 1y;
-        add_header Cache-Control "public, immutable";
+        add_header Cache-Control "public, immutable" always;
+        access_log off;
+    }
+
+    # Cache images and icons
+    location ~* \.(png|jpg|jpeg|gif|ico|svg|webp)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable" always;
+        access_log off;
+    }
+
+    # Cache fonts (if any are added later)
+    location ~* \.(woff|woff2|ttf|eot|otf)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable" always;
+        add_header Access-Control-Allow-Origin "*" always;
+        access_log off;
+    }
+
+    # Other static files
+    location ~* \.(xml|txt)$ {
+        expires 1d;
+        add_header Cache-Control "public, must-revalidate" always;
     }
 }

frontend/src/components/AccountSettings.tsx

@@ -234,24 +234,28 @@ export default function AccountSettings() {
                                   }}
                                   autoFocus
                                 />
-                                <button
+                                <Button
                                   onClick={handleEditSave}
                                   disabled={
                                     !editingName.trim() ||
                                     updateAccountMutation.isPending
                                   }
-                                  className="p-1 text-green-600 hover:text-green-700 disabled:opacity-50 disabled:cursor-not-allowed"
+                                  size="icon"
+                                  variant="ghost"
+                                  className="h-8 w-8 text-green-600 hover:text-green-700 hover:bg-green-100"
                                   title="Save changes"
                                 >
                                   <Check className="h-4 w-4" />
-                                </button>
-                                <button
+                                </Button>
+                                <Button
                                   onClick={handleEditCancel}
-                                  className="p-1 text-gray-600 hover:text-gray-700"
+                                  size="icon"
+                                  variant="ghost"
+                                  className="h-8 w-8"
                                   title="Cancel editing"
                                 >
                                   <X className="h-4 w-4" />
-                                </button>
+                                </Button>
                               </div>
                               <p className="text-sm text-muted-foreground truncate">
                                 {account.institution_id}
@@ -265,13 +269,15 @@ export default function AccountSettings() {
                                     account.name ||
                                     "Unnamed Account"}
                                 </h4>
-                                <button
+                                <Button
                                   onClick={() => handleEditStart(account)}
-                                  className="flex-shrink-0 p-1 text-muted-foreground hover:text-foreground transition-colors"
+                                  size="icon"
+                                  variant="ghost"
+                                  className="h-7 w-7 flex-shrink-0"
                                   title="Edit account name"
                                 >
                                   <Edit2 className="h-4 w-4" />
-                                </button>
+                                </Button>
                               </div>
                               <p className="text-sm text-muted-foreground truncate">
                                 {account.institution_id}

frontend/src/components/AccountsOverview.tsx

@@ -23,6 +23,7 @@ import {
 import { Button } from "./ui/button";
 import { Alert, AlertDescription, AlertTitle } from "./ui/alert";
 import AccountsSkeleton from "./AccountsSkeleton";
+import { BlurredValue } from "./ui/blurred-value";
 import type { Account, Balance } from "../types/api";
 
 // Helper function to get status indicator color and styles
@@ -158,7 +159,7 @@ export default function AccountsOverview() {
                   Total Balance
                 </p>
                 <p className="text-2xl font-bold text-foreground">
-                  {formatCurrency(totalBalance)}
+                  <BlurredValue>{formatCurrency(totalBalance)}</BlurredValue>
                 </p>
               </div>
               <div className="p-3 bg-green-100 dark:bg-green-900/20 rounded-full">
@@ -273,24 +274,28 @@ export default function AccountsOverview() {
                                   }}
                                   autoFocus
                                 />
-                                <button
+                                <Button
                                   onClick={handleEditSave}
                                   disabled={
                                     !editingName.trim() ||
                                     updateAccountMutation.isPending
                                   }
-                                  className="p-1 text-green-600 hover:text-green-700 disabled:opacity-50 disabled:cursor-not-allowed"
+                                  size="icon"
+                                  variant="ghost"
+                                  className="h-8 w-8 text-green-600 hover:text-green-700 hover:bg-green-100"
                                   title="Save changes"
                                 >
                                   <Check className="h-4 w-4" />
-                                </button>
-                                <button
+                                </Button>
+                                <Button
                                   onClick={handleEditCancel}
-                                  className="p-1 text-gray-600 hover:text-gray-700"
+                                  size="icon"
+                                  variant="ghost"
+                                  className="h-8 w-8"
                                   title="Cancel editing"
                                 >
                                   <X className="h-4 w-4" />
-                                </button>
+                                </Button>
                               </div>
                               <p className="text-sm text-muted-foreground truncate">
                                 {account.institution_id}
@@ -304,13 +309,15 @@ export default function AccountsOverview() {
                                     account.name ||
                                     "Unnamed Account"}
                                 </h4>
-                                <button
+                                <Button
                                   onClick={() => handleEditStart(account)}
-                                  className="flex-shrink-0 p-1 text-muted-foreground hover:text-foreground transition-colors"
+                                  size="icon"
+                                  variant="ghost"
+                                  className="h-7 w-7 flex-shrink-0"
                                   title="Edit account name"
                                 >
                                   <Edit2 className="h-4 w-4" />
-                                </button>
+                                </Button>
                               </div>
                               <p className="text-sm text-muted-foreground truncate">
                                 {account.institution_id}
@@ -363,7 +370,9 @@ export default function AccountsOverview() {
                               isPositive ? "text-green-600" : "text-red-600"
                             }`}
                           >
-                            {formatCurrency(balance, currency)}
+                            <BlurredValue>
+                              {formatCurrency(balance, currency)}
+                            </BlurredValue>
                           </p>
                         </div>
                       </div>

frontend/src/components/AppSidebar.tsx

@@ -16,6 +16,7 @@ import { apiClient } from "../lib/api";
 import { formatCurrency } from "../lib/utils";
 import { useState } from "react";
 import type { Account } from "../types/api";
+import { BlurredValue } from "./ui/blurred-value";
 import {
   Sidebar,
   SidebarContent,
@@ -61,7 +62,7 @@ export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
   };
 
   return (
-    <Sidebar collapsible="icon" className="pt-safe-top pl-safe-left" {...props}>
+    <Sidebar collapsible="icon" {...props}>
       <SidebarHeader>
         <SidebarMenu>
           <SidebarMenuItem>
@@ -130,7 +131,7 @@ export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
 
             <div className="px-3 pb-2">
               <p className="text-xl font-bold text-foreground">
-                {formatCurrency(totalBalance)}
+                <BlurredValue>{formatCurrency(totalBalance)}</BlurredValue>
               </p>
               <p className="text-sm text-muted-foreground">
                 {accounts?.length || 0} accounts
@@ -163,7 +164,9 @@ export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
                               "Unnamed Account"}
                           </p>
                           <p className="text-xs font-semibold text-foreground">
-                            {formatCurrency(primaryBalance, currency)}
+                            <BlurredValue>
+                              {formatCurrency(primaryBalance, currency)}
+                            </BlurredValue>
                           </p>
                         </div>
                       </div>

frontend/src/components/NotificationFiltersDrawer.tsx

@@ -166,13 +166,15 @@ export default function NotificationFiltersDrawer({
                       className="flex items-center space-x-1 bg-secondary text-secondary-foreground px-2 py-1 rounded-md text-sm"
                     >
                       <span>{filter}</span>
-                      <button
+                      <Button
                         type="button"
                         onClick={() => removeCaseInsensitiveFilter(index)}
-                        className="text-secondary-foreground hover:text-foreground"
+                        variant="ghost"
+                        size="icon"
+                        className="h-5 w-5 hover:bg-secondary-foreground/10"
                       >
                         <X className="h-3 w-3" />
-                      </button>
+                      </Button>
                     </div>
                   ))
                 ) : (
@@ -222,13 +224,15 @@ export default function NotificationFiltersDrawer({
                       className="flex items-center space-x-1 bg-secondary text-secondary-foreground px-2 py-1 rounded-md text-sm"
                     >
                       <span>{filter}</span>
-                      <button
+                      <Button
                         type="button"
                         onClick={() => removeCaseSensitiveFilter(index)}
-                        className="text-secondary-foreground hover:text-foreground"
+                        variant="ghost"
+                        size="icon"
+                        className="h-5 w-5 hover:bg-secondary-foreground/10"
                       >
                         <X className="h-3 w-3" />
-                      </button>
+                      </Button>
                     </div>
                   ))
                 ) : (

frontend/src/components/PWAPrompts.tsx

@@ -1,160 +0,0 @@
-import { useEffect, useState } from "react";
-import { X, Download, RotateCcw } from "lucide-react";
-
-interface BeforeInstallPromptEvent extends Event {
-  prompt(): Promise<void>;
-  userChoice: Promise<{ outcome: "accepted" | "dismissed" }>;
-}
-
-interface PWAPromptProps {
-  onInstall?: () => void;
-}
-
-export function PWAInstallPrompt({ onInstall }: PWAPromptProps) {
-  const [deferredPrompt, setDeferredPrompt] =
-    useState<BeforeInstallPromptEvent | null>(null);
-  const [showPrompt, setShowPrompt] = useState(false);
-
-  useEffect(() => {
-    const handler = (e: Event) => {
-      // Prevent the mini-infobar from appearing on mobile
-      e.preventDefault();
-      setDeferredPrompt(e as BeforeInstallPromptEvent);
-      setShowPrompt(true);
-    };
-
-    window.addEventListener("beforeinstallprompt", handler);
-
-    return () => window.removeEventListener("beforeinstallprompt", handler);
-  }, []);
-
-  const handleInstall = async () => {
-    if (!deferredPrompt) return;
-
-    try {
-      await deferredPrompt.prompt();
-      const { outcome } = await deferredPrompt.userChoice;
-
-      if (outcome === "accepted") {
-        onInstall?.();
-      }
-
-      setDeferredPrompt(null);
-      setShowPrompt(false);
-    } catch (error) {
-      console.error("Error installing PWA:", error);
-    }
-  };
-
-  const handleDismiss = () => {
-    setShowPrompt(false);
-    setDeferredPrompt(null);
-  };
-
-  if (!showPrompt || !deferredPrompt) return null;
-
-  return (
-    <div className="fixed bottom-4 left-4 right-4 md:left-auto md:right-4 md:max-w-sm bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 rounded-lg shadow-lg p-4 z-50">
-      <div className="flex items-start gap-3">
-        <div className="flex-shrink-0">
-          <Download className="h-5 w-5 text-blue-600 dark:text-blue-400" />
-        </div>
-        <div className="flex-1 min-w-0">
-          <p className="text-sm font-medium text-gray-900 dark:text-gray-100">
-            Install Leggen
-          </p>
-          <p className="text-sm text-gray-500 dark:text-gray-400">
-            Add to your home screen for quick access
-          </p>
-        </div>
-        <button
-          onClick={handleDismiss}
-          className="flex-shrink-0 text-gray-400 hover:text-gray-500 dark:hover:text-gray-300"
-        >
-          <X className="h-4 w-4" />
-        </button>
-      </div>
-      <div className="mt-3 flex gap-2">
-        <button
-          onClick={handleInstall}
-          className="flex-1 bg-blue-600 text-white text-sm font-medium px-3 py-2 rounded-md hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500"
-        >
-          Install
-        </button>
-        <button
-          onClick={handleDismiss}
-          className="px-3 py-2 text-sm font-medium text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-gray-100"
-        >
-          Not now
-        </button>
-      </div>
-    </div>
-  );
-}
-
-interface PWAUpdatePromptProps {
-  updateAvailable: boolean;
-  onUpdate: () => void;
-}
-
-export function PWAUpdatePrompt({
-  updateAvailable,
-  onUpdate,
-}: PWAUpdatePromptProps) {
-  const [showPrompt, setShowPrompt] = useState(false);
-
-  useEffect(() => {
-    if (updateAvailable) {
-      setShowPrompt(true);
-    }
-  }, [updateAvailable]);
-
-  const handleUpdate = () => {
-    onUpdate();
-    setShowPrompt(false);
-  };
-
-  const handleDismiss = () => {
-    setShowPrompt(false);
-  };
-
-  if (!showPrompt || !updateAvailable) return null;
-
-  return (
-    <div className="fixed top-4 left-4 right-4 md:left-auto md:right-4 md:max-w-sm bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 rounded-lg shadow-lg p-4 z-50">
-      <div className="flex items-start gap-3">
-        <div className="flex-shrink-0">
-          <RotateCcw className="h-5 w-5 text-green-600 dark:text-green-400" />
-        </div>
-        <div className="flex-1 min-w-0">
-          <p className="text-sm font-medium text-gray-900 dark:text-gray-100">
-            Update Available
-          </p>
-          <p className="text-sm text-gray-500 dark:text-gray-400">
-            A new version of Leggen is ready to install
-          </p>
-        </div>
-        <button
-          onClick={handleDismiss}
-          className="flex-shrink-0 text-gray-400 hover:text-gray-500 dark:hover:text-gray-300"
-        >
-          <X className="h-4 w-4" />
-        </button>
-      </div>
-      <div className="mt-3 flex gap-2">
-        <button
-          onClick={handleUpdate}
-          className="flex-1 bg-green-600 text-white text-sm font-medium px-3 py-2 rounded-md hover:bg-green-700 focus:outline-none focus:ring-2 focus:ring-green-500"
-        >
-          Update Now
-        </button>
-        <button
-          onClick={handleDismiss}
-          className="px-3 py-2 text-sm font-medium text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-gray-100"
-        >
-          Later
-        </button>
-      </div>
-    </div>
-  );
-}

frontend/src/components/S3BackupConfigDrawer.tsx

@@ -0,0 +1,273 @@
+import { useState, useEffect } from "react";
+import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { Cloud, TestTube } from "lucide-react";
+import { toast } from "sonner";
+import { apiClient } from "../lib/api";
+import { Button } from "./ui/button";
+import { Input } from "./ui/input";
+import { Label } from "./ui/label";
+import { Switch } from "./ui/switch";
+import { EditButton } from "./ui/edit-button";
+import {
+  Drawer,
+  DrawerClose,
+  DrawerContent,
+  DrawerDescription,
+  DrawerFooter,
+  DrawerHeader,
+  DrawerTitle,
+  DrawerTrigger,
+} from "./ui/drawer";
+import type { BackupSettings, S3Config } from "../types/api";
+
+interface S3BackupConfigDrawerProps {
+  settings?: BackupSettings;
+  trigger?: React.ReactNode;
+}
+
+export default function S3BackupConfigDrawer({
+  settings,
+  trigger,
+}: S3BackupConfigDrawerProps) {
+  const [open, setOpen] = useState(false);
+  const [config, setConfig] = useState<S3Config>({
+    access_key_id: "",
+    secret_access_key: "",
+    bucket_name: "",
+    region: "us-east-1",
+    endpoint_url: "",
+    path_style: false,
+    enabled: true,
+  });
+
+  const queryClient = useQueryClient();
+
+  useEffect(() => {
+    if (settings?.s3) {
+      setConfig({ ...settings.s3 });
+    }
+  }, [settings]);
+
+  const updateMutation = useMutation({
+    mutationFn: (s3Config: S3Config) =>
+      apiClient.updateBackupSettings({
+        s3: s3Config,
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["backupSettings"] });
+      setOpen(false);
+      toast.success("S3 backup configuration saved successfully");
+    },
+    onError: (error: Error & { response?: { data?: { detail?: string } } }) => {
+      console.error("Failed to update S3 backup configuration:", error);
+      const message =
+        error?.response?.data?.detail ||
+        "Failed to save S3 configuration. Please check your settings and try again.";
+      toast.error(message);
+    },
+  });
+
+  const testMutation = useMutation({
+    mutationFn: () =>
+      apiClient.testBackupConnection({
+        service: "s3",
+        config: config,
+      }),
+    onSuccess: (response) => {
+      if (response.success) {
+        console.log("S3 connection test successful");
+        toast.success(
+          "S3 connection test successful! Your configuration is working correctly.",
+        );
+      } else {
+        console.error("S3 connection test failed:", response.message);
+        toast.error(response.message || "S3 connection test failed. Please verify your credentials and settings.");
+      }
+    },
+    onError: (error: Error & { response?: { data?: { detail?: string } } }) => {
+      console.error("Failed to test S3 connection:", error);
+      const message =
+        error?.response?.data?.detail ||
+        "S3 connection test failed. Please verify your credentials and settings.";
+      toast.error(message);
+    },
+  });
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault();
+    updateMutation.mutate(config);
+  };
+
+  const handleTest = () => {
+    testMutation.mutate();
+  };
+
+  const isConfigValid =
+    config.access_key_id.trim().length > 0 &&
+    config.secret_access_key.trim().length > 0 &&
+    config.bucket_name.trim().length > 0;
+
+  return (
+    <Drawer open={open} onOpenChange={setOpen}>
+      <DrawerTrigger asChild>{trigger || <EditButton />}</DrawerTrigger>
+      <DrawerContent>
+        <div className="mx-auto w-full max-w-sm">
+          <DrawerHeader>
+            <DrawerTitle className="flex items-center space-x-2">
+              <Cloud className="h-5 w-5 text-primary" />
+              <span>S3 Backup Configuration</span>
+            </DrawerTitle>
+            <DrawerDescription>
+              Configure S3 settings for automatic database backups
+            </DrawerDescription>
+          </DrawerHeader>
+
+          <form onSubmit={handleSubmit} className="px-4 space-y-4">
+            <div className="flex items-center space-x-2">
+              <Switch
+                id="enabled"
+                checked={config.enabled}
+                onCheckedChange={(checked) =>
+                  setConfig({ ...config, enabled: checked })
+                }
+              />
+              <Label htmlFor="enabled">Enable S3 backups</Label>
+            </div>
+
+            {config.enabled && (
+              <>
+                <div className="space-y-2">
+                  <Label htmlFor="access_key_id">Access Key ID</Label>
+                  <Input
+                    id="access_key_id"
+                    type="text"
+                    value={config.access_key_id}
+                    onChange={(e) =>
+                      setConfig({ ...config, access_key_id: e.target.value })
+                    }
+                    placeholder="Your AWS Access Key ID"
+                    required
+                  />
+                </div>
+
+                <div className="space-y-2">
+                  <Label htmlFor="secret_access_key">Secret Access Key</Label>
+                  <Input
+                    id="secret_access_key"
+                    type="password"
+                    value={config.secret_access_key}
+                    onChange={(e) =>
+                      setConfig({
+                        ...config,
+                        secret_access_key: e.target.value,
+                      })
+                    }
+                    placeholder="Your AWS Secret Access Key"
+                    required
+                  />
+                </div>
+
+                <div className="space-y-2">
+                  <Label htmlFor="bucket_name">Bucket Name</Label>
+                  <Input
+                    id="bucket_name"
+                    type="text"
+                    value={config.bucket_name}
+                    onChange={(e) =>
+                      setConfig({ ...config, bucket_name: e.target.value })
+                    }
+                    placeholder="my-backup-bucket"
+                    required
+                  />
+                </div>
+
+                <div className="space-y-2">
+                  <Label htmlFor="region">Region</Label>
+                  <Input
+                    id="region"
+                    type="text"
+                    value={config.region}
+                    onChange={(e) =>
+                      setConfig({ ...config, region: e.target.value })
+                    }
+                    placeholder="us-east-1"
+                    required
+                  />
+                </div>
+
+                <div className="space-y-2">
+                  <Label htmlFor="endpoint_url">
+                    Custom Endpoint URL (Optional)
+                  </Label>
+                  <Input
+                    id="endpoint_url"
+                    type="url"
+                    value={config.endpoint_url || ""}
+                    onChange={(e) =>
+                      setConfig({ ...config, endpoint_url: e.target.value })
+                    }
+                    placeholder="https://custom-s3-endpoint.com"
+                  />
+                  <p className="text-xs text-muted-foreground">
+                    For S3-compatible services like MinIO or DigitalOcean Spaces
+                  </p>
+                </div>
+
+                <div className="flex items-center space-x-2">
+                  <Switch
+                    id="path_style"
+                    checked={config.path_style}
+                    onCheckedChange={(checked) =>
+                      setConfig({ ...config, path_style: checked })
+                    }
+                  />
+                  <Label htmlFor="path_style">Use path-style addressing</Label>
+                </div>
+                <p className="text-xs text-muted-foreground">
+                  Enable for older S3 implementations or certain S3-compatible
+                  services
+                </p>
+              </>
+            )}
+
+            <DrawerFooter className="px-0">
+              <div className="flex space-x-2">
+                <Button
+                  type="submit"
+                  disabled={updateMutation.isPending || !config.enabled}
+                >
+                  {updateMutation.isPending
+                    ? "Saving..."
+                    : "Save Configuration"}
+                </Button>
+                {config.enabled && isConfigValid && (
+                  <Button
+                    type="button"
+                    variant="outline"
+                    onClick={handleTest}
+                    disabled={testMutation.isPending}
+                  >
+                    {testMutation.isPending ? (
+                      <>
+                        <TestTube className="h-4 w-4 mr-2 animate-spin" />
+                        Testing...
+                      </>
+                    ) : (
+                      <>
+                        <TestTube className="h-4 w-4 mr-2" />
+                        Test
+                      </>
+                    )}
+                  </Button>
+                )}
+              </div>
+              <DrawerClose asChild>
+                <Button variant="ghost">Cancel</Button>
+              </DrawerClose>
+            </DrawerFooter>
+          </form>
+        </div>
+      </DrawerContent>
+    </Drawer>
+  );
+}

frontend/src/components/Settings.tsx

@@ -16,7 +16,11 @@ import {
   Trash2,
   User,
   Filter,
+  Cloud,
+  Archive,
+  Eye,
 } from "lucide-react";
+import { toast } from "sonner";
 import { apiClient } from "../lib/api";
 import { formatCurrency, formatDate } from "../lib/utils";
 import {
@@ -30,16 +34,20 @@ import { Button } from "./ui/button";
 import { Alert, AlertDescription, AlertTitle } from "./ui/alert";
 import { Label } from "./ui/label";
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "./ui/tabs";
+import { BlurredValue } from "./ui/blurred-value";
 import AccountsSkeleton from "./AccountsSkeleton";
 import NotificationFiltersDrawer from "./NotificationFiltersDrawer";
 import DiscordConfigDrawer from "./DiscordConfigDrawer";
 import TelegramConfigDrawer from "./TelegramConfigDrawer";
 import AddBankAccountDrawer from "./AddBankAccountDrawer";
+import S3BackupConfigDrawer from "./S3BackupConfigDrawer";
 import type {
   Account,
   Balance,
   NotificationSettings,
   NotificationService,
+  BackupSettings,
+  BackupInfo,
 } from "../types/api";
 
 // Helper function to get status indicator color and styles
@@ -80,6 +88,7 @@ export default function Settings() {
   const [editingAccountId, setEditingAccountId] = useState<string | null>(null);
   const [editingName, setEditingName] = useState("");
   const [failedImages, setFailedImages] = useState<Set<string>>(new Set());
+  const [showBackups, setShowBackups] = useState(false);
 
   const queryClient = useQueryClient();
 
@@ -125,6 +134,28 @@ export default function Settings() {
     queryFn: apiClient.getBankConnectionsStatus,
   });
 
+  // Backup queries
+  const {
+    data: backupSettings,
+    isLoading: backupLoading,
+    error: backupError,
+    refetch: refetchBackup,
+  } = useQuery<BackupSettings>({
+    queryKey: ["backupSettings"],
+    queryFn: apiClient.getBackupSettings,
+  });
+
+  const {
+    data: backups,
+    isLoading: backupsLoading,
+    error: backupsError,
+    refetch: refetchBackups,
+  } = useQuery<BackupInfo[]>({
+    queryKey: ["backups"],
+    queryFn: apiClient.listBackups,
+    enabled: showBackups,
+  });
+
   // Account mutations
   const updateAccountMutation = useMutation({
     mutationFn: ({ id, display_name }: { id: string; display_name: string }) =>
@@ -158,6 +189,26 @@ export default function Settings() {
     },
   });
 
+  // Backup mutations
+  const createBackupMutation = useMutation({
+    mutationFn: () => apiClient.performBackupOperation({ operation: "backup" }),
+    onSuccess: (response) => {
+      if (response.success) {
+        toast.success(response.message || "Backup created successfully!");
+        queryClient.invalidateQueries({ queryKey: ["backups"] });
+      } else {
+        toast.error(response.message || "Failed to create backup.");
+      }
+    },
+    onError: (error: Error & { response?: { data?: { detail?: string } } }) => {
+      console.error("Failed to create backup:", error);
+      const message =
+        error?.response?.data?.detail ||
+        "Failed to create backup. Please check your S3 configuration.";
+      toast.error(message);
+    },
+  });
+
   // Account handlers
   const handleEditStart = (account: Account) => {
     setEditingAccountId(account.id);
@@ -189,8 +240,27 @@ export default function Settings() {
     }
   };
 
-  const isLoading = accountsLoading || settingsLoading || servicesLoading;
-  const hasError = accountsError || settingsError || servicesError;
+  // Backup handlers
+  const handleCreateBackup = () => {
+    if (!backupSettings?.s3?.enabled) {
+      toast.error("S3 backup is not enabled. Please configure and enable S3 backup first.");
+      return;
+    }
+    createBackupMutation.mutate();
+  };
+
+  const handleViewBackups = () => {
+    if (!backupSettings?.s3?.enabled) {
+      toast.error("S3 backup is not enabled. Please configure and enable S3 backup first.");
+      return;
+    }
+    setShowBackups(true);
+  };
+
+  const isLoading =
+    accountsLoading || settingsLoading || servicesLoading || backupLoading;
+  const hasError =
+    accountsError || settingsError || servicesError || backupError;
 
   if (isLoading) {
     return <AccountsSkeleton />;
@@ -211,6 +281,7 @@ export default function Settings() {
               refetchAccounts();
               refetchSettings();
               refetchServices();
+              refetchBackup();
             }}
             variant="outline"
             size="sm"
@@ -226,7 +297,7 @@ export default function Settings() {
   return (
     <div className="space-y-6">
       <Tabs defaultValue="accounts" className="space-y-6">
-        <TabsList className="grid w-full grid-cols-2">
+        <TabsList className="grid w-full grid-cols-3">
           <TabsTrigger value="accounts" className="flex items-center space-x-2">
             <User className="h-4 w-4" />
             <span>Accounts</span>
@@ -238,6 +309,10 @@ export default function Settings() {
             <Bell className="h-4 w-4" />
             <span>Notifications</span>
           </TabsTrigger>
+          <TabsTrigger value="backup" className="flex items-center space-x-2">
+            <Cloud className="h-4 w-4" />
+            <span>Backup</span>
+          </TabsTrigger>
         </TabsList>
 
         <TabsContent value="accounts" className="space-y-6">
@@ -329,24 +404,28 @@ export default function Settings() {
                                       }}
                                       autoFocus
                                     />
-                                    <button
+                                    <Button
                                       onClick={handleEditSave}
                                       disabled={
                                         !editingName.trim() ||
                                         updateAccountMutation.isPending
                                       }
-                                      className="p-1 text-green-600 hover:text-green-700 disabled:opacity-50 disabled:cursor-not-allowed"
+                                      size="icon"
+                                      variant="ghost"
+                                      className="h-8 w-8 text-green-600 hover:text-green-700 hover:bg-green-100"
                                       title="Save changes"
                                     >
                                       <Check className="h-4 w-4" />
-                                    </button>
-                                    <button
+                                    </Button>
+                                    <Button
                                       onClick={handleEditCancel}
-                                      className="p-1 text-gray-600 hover:text-gray-700"
+                                      size="icon"
+                                      variant="ghost"
+                                      className="h-8 w-8"
                                       title="Cancel editing"
                                     >
                                       <X className="h-4 w-4" />
-                                    </button>
+                                    </Button>
                                   </div>
                                   <p className="text-sm text-muted-foreground truncate">
                                     {account.institution_id}
@@ -360,13 +439,15 @@ export default function Settings() {
                                         account.name ||
                                         "Unnamed Account"}
                                     </h4>
-                                    <button
+                                    <Button
                                       onClick={() => handleEditStart(account)}
-                                      className="flex-shrink-0 p-1 text-muted-foreground hover:text-foreground transition-colors"
+                                      size="icon"
+                                      variant="ghost"
+                                      className="h-7 w-7 flex-shrink-0"
                                       title="Edit account name"
                                     >
                                       <Edit2 className="h-4 w-4" />
-                                    </button>
+                                    </Button>
                                   </div>
                                   <p className="text-sm text-muted-foreground truncate">
                                     {account.institution_id}
@@ -411,13 +492,13 @@ export default function Settings() {
                               ) : (
                                 <TrendingDown className="h-4 w-4 text-red-500" />
                               )}
-                              <p
+                              <BlurredValue
                                 className={`text-base sm:text-lg font-semibold ${
                                   isPositive ? "text-green-600" : "text-red-600"
                                 }`}
                               >
                                 {formatCurrency(balance, currency)}
-                              </p>
+                              </BlurredValue>
                             </div>
                           </div>
                         </div>
@@ -505,7 +586,7 @@ export default function Settings() {
                                 Created {formatDate(connection.created_at)}
                               </p>
                             </div>
-                            <button
+                            <Button
                               onClick={() => {
                                 const isWorking =
                                   connection.status.toLowerCase() === "ln";
@@ -520,11 +601,13 @@ export default function Settings() {
                                 }
                               }}
                               disabled={deleteBankConnectionMutation.isPending}
-                              className="p-1 text-muted-foreground hover:text-destructive transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
+                              size="icon"
+                              variant="ghost"
+                              className="h-8 w-8 text-muted-foreground hover:text-destructive"
                               title="Delete connection"
                             >
                               <Trash2 className="h-4 w-4" />
-                            </button>
+                            </Button>
                           </div>
                         </div>
                       </div>
@@ -728,6 +811,174 @@ export default function Settings() {
             </CardContent>
           </Card>
         </TabsContent>
+
+        <TabsContent value="backup" className="space-y-6">
+          {/* S3 Backup Configuration */}
+          <Card>
+            <CardHeader>
+              <CardTitle className="flex items-center space-x-2">
+                <Cloud className="h-5 w-5 text-primary" />
+                <span>S3 Backup Configuration</span>
+              </CardTitle>
+              <CardDescription>
+                Configure automatic database backups to Amazon S3 or
+                S3-compatible storage
+              </CardDescription>
+            </CardHeader>
+
+            <CardContent>
+              {!backupSettings?.s3 ? (
+                <div className="text-center py-8">
+                  <Cloud className="h-12 w-12 text-muted-foreground mx-auto mb-4" />
+                  <h3 className="text-lg font-medium text-foreground mb-2">
+                    No S3 backup configured
+                  </h3>
+                  <p className="text-muted-foreground mb-4">
+                    Set up S3 backup to automatically backup your database to
+                    the cloud.
+                  </p>
+                  <S3BackupConfigDrawer settings={backupSettings} />
+                </div>
+              ) : (
+                <div className="space-y-4">
+                  <div className="flex items-center justify-between p-4 border rounded-lg">
+                    <div className="flex items-center space-x-4">
+                      <div className="p-3 bg-muted rounded-full">
+                        <Cloud className="h-6 w-6 text-muted-foreground" />
+                      </div>
+                      <div>
+                        <div className="flex items-center space-x-3">
+                          <h4 className="text-lg font-medium text-foreground">
+                            S3 Backup
+                          </h4>
+                          <div className="flex items-center space-x-2">
+                            <div
+                              className={`w-2 h-2 rounded-full ${
+                                backupSettings.s3.enabled
+                                  ? "bg-green-500"
+                                  : "bg-muted-foreground"
+                              }`}
+                            />
+                            <span className="text-sm text-muted-foreground">
+                              {backupSettings.s3.enabled
+                                ? "Enabled"
+                                : "Disabled"}
+                            </span>
+                          </div>
+                        </div>
+                        <div className="mt-2 space-y-1">
+                          <p className="text-sm text-muted-foreground">
+                            <span className="font-medium">Bucket:</span>{" "}
+                            {backupSettings.s3.bucket_name}
+                          </p>
+                          <p className="text-sm text-muted-foreground">
+                            <span className="font-medium">Region:</span>{" "}
+                            {backupSettings.s3.region}
+                          </p>
+                          {backupSettings.s3.endpoint_url && (
+                            <p className="text-sm text-muted-foreground">
+                              <span className="font-medium">Endpoint:</span>{" "}
+                              {backupSettings.s3.endpoint_url}
+                            </p>
+                          )}
+                        </div>
+                      </div>
+                    </div>
+                    <S3BackupConfigDrawer settings={backupSettings} />
+                  </div>
+
+                  <div className="p-4 bg-muted rounded-lg">
+                    <h5 className="font-medium mb-2">Backup Information</h5>
+                    <p className="text-sm text-muted-foreground mb-3">
+                      Database backups are stored in the "leggen_backups/"
+                      folder in your S3 bucket. Backups include the complete
+                      SQLite database file.
+                    </p>
+                    <div className="flex space-x-2">
+                      <Button
+                        size="sm"
+                        variant="outline"
+                        onClick={handleCreateBackup}
+                        disabled={createBackupMutation.isPending}
+                      >
+                        {createBackupMutation.isPending ? (
+                          <>
+                            <Archive className="h-4 w-4 mr-2 animate-spin" />
+                            Creating...
+                          </>
+                        ) : (
+                          <>
+                            <Archive className="h-4 w-4 mr-2" />
+                            Create Backup Now
+                          </>
+                        )}
+                      </Button>
+                      <Button
+                        size="sm"
+                        variant="outline"
+                        onClick={handleViewBackups}
+                      >
+                        <Eye className="h-4 w-4 mr-2" />
+                        View Backups
+                      </Button>
+                    </div>
+                  </div>
+
+                  {/* Backup List Modal/View */}
+                  {showBackups && (
+                    <div className="mt-6 p-4 border rounded-lg bg-background">
+                      <div className="flex items-center justify-between mb-4">
+                        <h5 className="font-medium">Available Backups</h5>
+                        <Button
+                          size="sm"
+                          variant="ghost"
+                          onClick={() => setShowBackups(false)}
+                        >
+                          <X className="h-4 w-4" />
+                        </Button>
+                      </div>
+
+                      {backupsLoading ? (
+                        <p className="text-sm text-muted-foreground">Loading backups...</p>
+                      ) : backupsError ? (
+                        <div className="space-y-2">
+                          <p className="text-sm text-destructive">Failed to load backups</p>
+                          <Button
+                            size="sm"
+                            variant="outline"
+                            onClick={() => refetchBackups()}
+                          >
+                            <RefreshCw className="h-4 w-4 mr-2" />
+                            Retry
+                          </Button>
+                        </div>
+                      ) : !backups || backups.length === 0 ? (
+                        <p className="text-sm text-muted-foreground">No backups found</p>
+                      ) : (
+                        <div className="space-y-2">
+                          {backups.map((backup, index) => (
+                            <div
+                              key={backup.key || index}
+                              className="flex items-center justify-between p-3 border rounded bg-muted/50"
+                            >
+                              <div>
+                                <p className="text-sm font-medium">{backup.key}</p>
+                                <div className="flex items-center space-x-4 text-xs text-muted-foreground mt-1">
+                                  <span>Modified: {formatDate(backup.last_modified)}</span>
+                                  <span>Size: {(backup.size / 1024 / 1024).toFixed(2)} MB</span>
+                                </div>
+                              </div>
+                            </div>
+                          ))}
+                        </div>
+                      )}
+                    </div>
+                  )}
+                </div>
+              )}
+            </CardContent>
+          </Card>
+        </TabsContent>
       </Tabs>
     </div>
   );

frontend/src/components/SiteHeader.tsx

@@ -3,6 +3,7 @@ import { Activity, Wifi, WifiOff } from "lucide-react";
 import { useQuery } from "@tanstack/react-query";
 import { apiClient } from "../lib/api";
 import { ThemeToggle } from "./ui/theme-toggle";
+import { BalanceToggle } from "./ui/balance-toggle";
 import { Separator } from "./ui/separator";
 import { SidebarTrigger } from "./ui/sidebar";
 
@@ -31,7 +32,7 @@ export function SiteHeader() {
   });
 
   return (
-    <header className="flex h-16 shrink-0 items-center gap-2 border-b transition-[width,height] ease-linear pt-safe-top">
+    <header className="flex h-16 shrink-0 items-center gap-2 border-b transition-[width,height] ease-linear">
       <div className="flex w-full items-center gap-1 px-4 lg:gap-2 lg:px-6">
         <SidebarTrigger className="-ml-1" />
         <Separator
@@ -77,6 +78,7 @@ export function SiteHeader() {
               </>
             )}
           </div>
+          <BalanceToggle />
           <ThemeToggle />
         </div>
       </div>

frontend/src/components/TransactionsTable.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from "react";
+import { useState, useEffect, useMemo } from "react";
 import { useQuery } from "@tanstack/react-query";
 import {
   useReactTable,
@@ -31,7 +31,8 @@ import { DataTablePagination } from "./ui/data-table-pagination";
 import { Card } from "./ui/card";
 import { Alert, AlertDescription, AlertTitle } from "./ui/alert";
 import { Button } from "./ui/button";
-import type { Account, Transaction, ApiResponse } from "../types/api";
+import { BlurredValue } from "./ui/blurred-value";
+import type { Account, Transaction, PaginatedResponse } from "../types/api";
 
 export default function TransactionsTable() {
   // Filter state consolidated into a single object
@@ -102,7 +103,7 @@ export default function TransactionsTable() {
     isLoading: transactionsLoading,
     error: transactionsError,
     refetch: refetchTransactions,
-  } = useQuery<ApiResponse<Transaction[]>>({
+  } = useQuery<PaginatedResponse<Transaction>>({
     queryKey: [
       "transactions",
       filterState.selectedAccount,
@@ -122,10 +123,52 @@ export default function TransactionsTable() {
         search: debouncedSearchTerm || undefined,
         summaryOnly: false,
       }),
+    placeholderData: (previousData) => previousData,
   });
 
-  const transactions = transactionsResponse?.data || [];
-  const pagination = transactionsResponse?.pagination;
+  const transactions = useMemo(
+    () => transactionsResponse?.data || [],
+    [transactionsResponse],
+  );
+  const pagination = useMemo(
+    () =>
+      transactionsResponse
+        ? {
+            page: transactionsResponse.page,
+            total_pages: transactionsResponse.total_pages,
+            per_page: transactionsResponse.per_page,
+            total: transactionsResponse.total,
+            has_next: transactionsResponse.has_next,
+            has_prev: transactionsResponse.has_prev,
+          }
+        : undefined,
+    [transactionsResponse],
+  );
+
+  // Calculate stats from current page transactions, memoized for performance
+  const stats = useMemo(() => {
+    const totalIncome = transactions
+      .filter((t: Transaction) => t.transaction_value > 0)
+      .reduce((sum: number, t: Transaction) => sum + t.transaction_value, 0);
+
+    const totalExpenses = Math.abs(
+      transactions
+        .filter((t: Transaction) => t.transaction_value < 0)
+        .reduce((sum: number, t: Transaction) => sum + t.transaction_value, 0)
+    );
+
+    // Get currency from first transaction, fallback to EUR
+    const displayCurrency = transactions.length > 0 ? transactions[0].transaction_currency : "EUR";
+
+    return {
+      totalCount: pagination?.total || 0,
+      pageCount: transactions.length,
+      totalIncome,
+      totalExpenses,
+      netChange: totalIncome - totalExpenses,
+      displayCurrency,
+    };
+  }, [transactions, pagination]);
 
   // Check if search is currently debouncing
   const isSearchLoading = filterState.searchTerm !== debouncedSearchTerm;
@@ -221,11 +264,13 @@ export default function TransactionsTable() {
                 isPositive ? "text-green-600" : "text-red-600"
               }`}
             >
-              {isPositive ? "+" : ""}
-              {formatCurrency(
-                transaction.transaction_value,
-                transaction.transaction_currency,
-              )}
+              <BlurredValue>
+                {isPositive ? "+" : ""}
+                {formatCurrency(
+                  transaction.transaction_value,
+                  transaction.transaction_currency,
+                )}
+              </BlurredValue>
             </p>
           </div>
         );
@@ -259,14 +304,15 @@ export default function TransactionsTable() {
       cell: ({ row }) => {
         const transaction = row.original;
         return (
-          <button
+          <Button
             onClick={() => handleViewRaw(transaction)}
-            className="inline-flex items-center px-2 py-1 text-xs bg-muted text-muted-foreground rounded hover:bg-accent transition-colors"
+            variant="ghost"
+            size="sm"
             title="View raw transaction data"
           >
             <Eye className="h-3 w-3 mr-1" />
             Raw
-          </button>
+          </Button>
         );
       },
     },
@@ -349,6 +395,78 @@ export default function TransactionsTable() {
         isSearchLoading={isSearchLoading}
       />
 
+      {/* Transaction Statistics */}
+      {transactions.length > 0 && (
+        <div className="grid grid-cols-1 md:grid-cols-4 gap-4">
+          <Card className="p-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <p className="text-xs text-muted-foreground uppercase tracking-wider">
+                  Showing
+                </p>
+                <p className="text-2xl font-bold text-foreground mt-1">
+                  {stats.pageCount}
+                </p>
+                <p className="text-xs text-muted-foreground mt-1">
+                  of {stats.totalCount} total
+                </p>
+              </div>
+            </div>
+          </Card>
+
+          <Card className="p-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <p className="text-xs text-muted-foreground uppercase tracking-wider">
+                  Income
+                </p>
+                <BlurredValue className="text-2xl font-bold text-green-600 mt-1 block">
+                  +{formatCurrency(stats.totalIncome, stats.displayCurrency)}
+                </BlurredValue>
+              </div>
+              <TrendingUp className="h-8 w-8 text-green-600 opacity-50" />
+            </div>
+          </Card>
+
+          <Card className="p-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <p className="text-xs text-muted-foreground uppercase tracking-wider">
+                  Expenses
+                </p>
+                <BlurredValue className="text-2xl font-bold text-red-600 mt-1 block">
+                  -{formatCurrency(stats.totalExpenses, stats.displayCurrency)}
+                </BlurredValue>
+              </div>
+              <TrendingDown className="h-8 w-8 text-red-600 opacity-50" />
+            </div>
+          </Card>
+
+          <Card className="p-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <p className="text-xs text-muted-foreground uppercase tracking-wider">
+                  Net Change
+                </p>
+                <BlurredValue
+                  className={`text-2xl font-bold mt-1 block ${
+                    stats.netChange >= 0 ? "text-green-600" : "text-red-600"
+                  }`}
+                >
+                  {stats.netChange >= 0 ? "+" : ""}
+                  {formatCurrency(stats.netChange, stats.displayCurrency)}
+                </BlurredValue>
+              </div>
+              {stats.netChange >= 0 ? (
+                <TrendingUp className="h-8 w-8 text-green-600 opacity-50" />
+              ) : (
+                <TrendingDown className="h-8 w-8 text-red-600 opacity-50" />
+              )}
+            </div>
+          </Card>
+        </div>
+      )}
+
       {/* Responsive Table/Cards */}
       <Card>
         {/* Desktop Table View (hidden on mobile) */}
@@ -524,20 +642,23 @@ export default function TransactionsTable() {
                             isPositive ? "text-green-600" : "text-red-600"
                           }`}
                         >
-                          {isPositive ? "+" : ""}
-                          {formatCurrency(
-                            transaction.transaction_value,
-                            transaction.transaction_currency,
-                          )}
+                          <BlurredValue>
+                            {isPositive ? "+" : ""}
+                            {formatCurrency(
+                              transaction.transaction_value,
+                              transaction.transaction_currency,
+                            )}
+                          </BlurredValue>
                         </p>
-                        <button
+                        <Button
                           onClick={() => handleViewRaw(transaction)}
-                          className="inline-flex items-center px-2 py-1 text-xs bg-muted text-muted-foreground rounded hover:bg-accent transition-colors"
+                          variant="ghost"
+                          size="sm"
                           title="View raw transaction data"
                         >
                           <Eye className="h-3 w-3 mr-1" />
                           Raw
-                        </button>
+                        </Button>
                       </div>
                     </div>
                   </div>

frontend/src/components/analytics/BalanceChart.tsx

@@ -8,6 +8,8 @@ import {
   ResponsiveContainer,
   Legend,
 } from "recharts";
+import { useBalanceVisibility } from "../../contexts/BalanceVisibilityContext";
+import { cn } from "../../lib/utils";
 import type { Balance, Account } from "../../types/api";
 
 interface BalanceChartProps {
@@ -42,6 +44,8 @@ export default function BalanceChart({
   accounts,
   className,
 }: BalanceChartProps) {
+  const { isBalanceVisible } = useBalanceVisibility();
+
   // Create a lookup map for account info
   const accountMap = accounts.reduce(
     (map, account) => {
@@ -149,7 +153,7 @@ export default function BalanceChart({
       <h3 className="text-lg font-medium text-foreground mb-4">
         Balance Progress Over Time
       </h3>
-      <div className="h-80">
+      <div className={cn("h-80", !isBalanceVisible && "blur-md select-none")}>
         <ResponsiveContainer width="100%" height="100%">
           <AreaChart data={finalData}>
             <CartesianGrid strokeDasharray="3 3" />

frontend/src/components/analytics/MonthlyTrends.tsx

@@ -8,6 +8,8 @@ import {
   ResponsiveContainer,
 } from "recharts";
 import { useQuery } from "@tanstack/react-query";
+import { useBalanceVisibility } from "../../contexts/BalanceVisibilityContext";
+import { cn } from "../../lib/utils";
 import apiClient from "../../lib/api";
 
 interface MonthlyTrendsProps {
@@ -29,6 +31,8 @@ export default function MonthlyTrends({
   className,
   days = 365,
 }: MonthlyTrendsProps) {
+  const { isBalanceVisible } = useBalanceVisibility();
+
   // Get pre-calculated monthly stats from the new endpoint
   const { data: monthlyData, isLoading } = useQuery({
     queryKey: ["monthly-stats", days],
@@ -103,7 +107,7 @@ export default function MonthlyTrends({
       <h3 className="text-lg font-medium text-foreground mb-4">
         {getTitle(days)}
       </h3>
-      <div className="h-80">
+      <div className={cn("h-80", !isBalanceVisible && "blur-md select-none")}>
         <ResponsiveContainer width="100%" height="100%">
           <BarChart
             data={displayData}

frontend/src/components/analytics/StatCard.tsx

@@ -1,5 +1,6 @@
 import type { LucideIcon } from "lucide-react";
 import { Card, CardContent } from "../ui/card";
+import { BlurredValue } from "../ui/blurred-value";
 import { cn } from "../../lib/utils";
 
 interface StatCardProps {
@@ -13,6 +14,7 @@ interface StatCardProps {
   };
   className?: string;
   iconColor?: "green" | "blue" | "red" | "purple" | "orange" | "default";
+  shouldBlur?: boolean;
 }
 
 export default function StatCard({
@@ -23,6 +25,7 @@ export default function StatCard({
   trend,
   className,
   iconColor = "default",
+  shouldBlur = false,
 }: StatCardProps) {
   return (
     <Card className={cn(className)}>
@@ -31,7 +34,9 @@ export default function StatCard({
           <div>
             <p className="text-sm font-medium text-muted-foreground">{title}</p>
             <div className="flex items-baseline">
-              <p className="text-2xl font-bold text-foreground">{value}</p>
+              <p className="text-2xl font-bold text-foreground">
+                {shouldBlur ? <BlurredValue>{value}</BlurredValue> : value}
+              </p>
               {trend && (
                 <div
                   className={cn(

frontend/src/components/analytics/TransactionDistribution.tsx

@@ -6,6 +6,7 @@ import {
   Tooltip,
   Legend,
 } from "recharts";
+import { BlurredValue } from "../ui/blurred-value";
 import type { Account } from "../../types/api";
 
 interface TransactionDistributionProps {
@@ -85,7 +86,8 @@ export default function TransactionDistribution({
         <div className="bg-card p-3 border rounded shadow-lg">
           <p className="font-medium text-foreground">{data.name}</p>
           <p className="text-primary">
-            Balance: €{data.value.toLocaleString()}
+            Balance:{" "}
+            <BlurredValue>€{data.value.toLocaleString()}</BlurredValue>
           </p>
           <p className="text-muted-foreground">{percentage}% of total</p>
         </div>
@@ -138,7 +140,7 @@ export default function TransactionDistribution({
               <span className="text-foreground">{item.name}</span>
             </div>
             <span className="font-medium text-foreground">
-              €{item.value.toLocaleString()}
+              <BlurredValue>€{item.value.toLocaleString()}</BlurredValue>
             </span>
           </div>
         ))}

frontend/src/components/filters/FilterBar.tsx

@@ -1,3 +1,4 @@
+import { useRef, useEffect } from "react";
 import { Search } from "lucide-react";
 import { Input } from "@/components/ui/input";
 import { cn } from "@/lib/utils";
@@ -30,6 +31,21 @@ export function FilterBar({
   isSearchLoading = false,
   className,
 }: FilterBarProps) {
+  const searchInputRef = useRef<HTMLInputElement>(null);
+  const cursorPositionRef = useRef<number | null>(null);
+
+  // Maintain focus and cursor position on search input during re-renders
+  useEffect(() => {
+    const currentInput = searchInputRef.current;
+    if (!currentInput) return;
+
+    // Restore focus and cursor position after data fetches complete
+    if (cursorPositionRef.current !== null && document.activeElement !== currentInput) {
+      currentInput.focus();
+      currentInput.setSelectionRange(cursorPositionRef.current, cursorPositionRef.current);
+    }
+  }, [isSearchLoading]);
+
   const hasActiveFilters =
     filterState.searchTerm ||
     filterState.selectedAccount ||
@@ -61,9 +77,19 @@ export function FilterBar({
               <div className="relative w-[200px]">
                 <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 h-4 w-4 text-muted-foreground" />
                 <Input
+                  ref={searchInputRef}
                   placeholder="Search transactions..."
                   value={filterState.searchTerm}
-                  onChange={(e) => onFilterChange("searchTerm", e.target.value)}
+                  onChange={(e) => {
+                    cursorPositionRef.current = e.target.selectionStart;
+                    onFilterChange("searchTerm", e.target.value);
+                  }}
+                  onFocus={() => {
+                    cursorPositionRef.current = searchInputRef.current?.selectionStart ?? null;
+                  }}
+                  onBlur={() => {
+                    cursorPositionRef.current = null;
+                  }}
                   className="pl-9 pr-8 bg-background"
                 />
                 {isSearchLoading && (
@@ -99,9 +125,19 @@ export function FilterBar({
             <div className="relative">
               <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 h-4 w-4 text-muted-foreground" />
               <Input
+                ref={searchInputRef}
                 placeholder="Search..."
                 value={filterState.searchTerm}
-                onChange={(e) => onFilterChange("searchTerm", e.target.value)}
+                onChange={(e) => {
+                  cursorPositionRef.current = e.target.selectionStart;
+                  onFilterChange("searchTerm", e.target.value);
+                }}
+                onFocus={() => {
+                  cursorPositionRef.current = searchInputRef.current?.selectionStart ?? null;
+                }}
+                onBlur={() => {
+                  cursorPositionRef.current = null;
+                }}
                 className="pl-9 pr-8 bg-background w-full"
               />
               {isSearchLoading && (

frontend/src/components/ui/balance-toggle.tsx

@@ -0,0 +1,26 @@
+import { Eye, EyeOff } from "lucide-react";
+import { Button } from "./button";
+import { useBalanceVisibility } from "../../contexts/BalanceVisibilityContext";
+
+export function BalanceToggle() {
+  const { isBalanceVisible, toggleBalanceVisibility } = useBalanceVisibility();
+
+  return (
+    <Button
+      variant="outline"
+      size="icon"
+      onClick={toggleBalanceVisibility}
+      className="h-8 w-8"
+      title={isBalanceVisible ? "Hide balances" : "Show balances"}
+    >
+      {isBalanceVisible ? (
+        <Eye className="h-4 w-4" />
+      ) : (
+        <EyeOff className="h-4 w-4" />
+      )}
+      <span className="sr-only">
+        {isBalanceVisible ? "Hide balances" : "Show balances"}
+      </span>
+    </Button>
+  );
+}

frontend/src/components/ui/blurred-value.tsx

@@ -0,0 +1,23 @@
+import React from "react";
+import { useBalanceVisibility } from "../../contexts/BalanceVisibilityContext";
+import { cn } from "../../lib/utils";
+
+interface BlurredValueProps {
+  children: React.ReactNode;
+  className?: string;
+}
+
+export function BlurredValue({ children, className }: BlurredValueProps) {
+  const { isBalanceVisible } = useBalanceVisibility();
+
+  return (
+    <span
+      className={cn(
+        isBalanceVisible ? "" : "blur-md select-none",
+        className,
+      )}
+    >
+      {children}
+    </span>
+  );
+}

frontend/src/contexts/BalanceVisibilityContext.tsx

@@ -0,0 +1,48 @@
+import React, { createContext, useContext, useEffect, useState } from "react";
+
+interface BalanceVisibilityContextType {
+  isBalanceVisible: boolean;
+  toggleBalanceVisibility: () => void;
+}
+
+const BalanceVisibilityContext = createContext<
+  BalanceVisibilityContextType | undefined
+>(undefined);
+
+export function BalanceVisibilityProvider({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  const [isBalanceVisible, setIsBalanceVisible] = useState<boolean>(() => {
+    const stored = localStorage.getItem("balanceVisible");
+    // Default to true (visible) if not set
+    return stored === null ? true : stored === "true";
+  });
+
+  useEffect(() => {
+    localStorage.setItem("balanceVisible", String(isBalanceVisible));
+  }, [isBalanceVisible]);
+
+  const toggleBalanceVisibility = () => {
+    setIsBalanceVisible((prev) => !prev);
+  };
+
+  return (
+    <BalanceVisibilityContext.Provider
+      value={{ isBalanceVisible, toggleBalanceVisibility }}
+    >
+      {children}
+    </BalanceVisibilityContext.Provider>
+  );
+}
+
+export function useBalanceVisibility() {
+  const context = useContext(BalanceVisibilityContext);
+  if (context === undefined) {
+    throw new Error(
+      "useBalanceVisibility must be used within a BalanceVisibilityProvider",
+    );
+  }
+  return context;
+}

frontend/src/hooks/usePWA.ts

@@ -1,72 +0,0 @@
-import { useEffect, useState } from "react";
-
-interface PWAUpdate {
-  updateAvailable: boolean;
-  updateSW: () => Promise<void>;
-  forceReload: () => Promise<void>;
-}
-
-export function usePWA(): PWAUpdate {
-  const [updateAvailable, setUpdateAvailable] = useState(false);
-  const [updateSW, setUpdateSW] = useState<() => Promise<void>>(
-    () => async () => {},
-  );
-
-  const forceReload = async (): Promise<void> => {
-    try {
-      // Clear all caches
-      if ("caches" in window) {
-        const cacheNames = await caches.keys();
-        await Promise.all(
-          cacheNames.map((cacheName) => caches.delete(cacheName)),
-        );
-        console.log("All caches cleared");
-      }
-
-      // Unregister service worker
-      if ("serviceWorker" in navigator) {
-        const registrations = await navigator.serviceWorker.getRegistrations();
-        await Promise.all(
-          registrations.map((registration) => registration.unregister()),
-        );
-        console.log("All service workers unregistered");
-      }
-
-      // Force reload
-      window.location.reload();
-    } catch (error) {
-      console.error("Error during force reload:", error);
-      // Fallback: just reload the page
-      window.location.reload();
-    }
-  };
-
-  useEffect(() => {
-    // Check if SW registration is available
-    if ("serviceWorker" in navigator) {
-      // Import the registerSW function
-      import("virtual:pwa-register")
-        .then(({ registerSW }) => {
-          const updateSWFunction = registerSW({
-            onNeedRefresh() {
-              setUpdateAvailable(true);
-              setUpdateSW(() => updateSWFunction);
-            },
-            onOfflineReady() {
-              console.log("App ready to work offline");
-            },
-          });
-        })
-        .catch(() => {
-          // PWA not available in development mode or when disabled
-          console.log("PWA registration not available");
-        });
-    }
-  }, []);
-
-  return {
-    updateAvailable,
-    updateSW,
-    forceReload,
-  };
-}

frontend/src/hooks/useVersionCheck.ts

@@ -1,39 +0,0 @@
-import { useEffect } from "react";
-import { useQuery } from "@tanstack/react-query";
-import { apiClient } from "../lib/api";
-
-const VERSION_STORAGE_KEY = "leggen_app_version";
-
-export function useVersionCheck(forceReload: () => Promise<void>) {
-  const { data: healthStatus, isSuccess: healthSuccess } = useQuery({
-    queryKey: ["health"],
-    queryFn: apiClient.getHealth,
-    refetchInterval: 30000,
-    retry: false,
-    staleTime: 0, // Always consider data stale to ensure fresh version checks
-  });
-
-  useEffect(() => {
-    if (healthSuccess && healthStatus?.version) {
-      const currentVersion = healthStatus.version;
-      const storedVersion = localStorage.getItem(VERSION_STORAGE_KEY);
-
-      if (storedVersion && storedVersion !== currentVersion) {
-        console.log(
-          `Version mismatch detected: stored=${storedVersion}, current=${currentVersion}`,
-        );
-        console.log("Clearing cache and reloading...");
-
-        // Update stored version first
-        localStorage.setItem(VERSION_STORAGE_KEY, currentVersion);
-
-        // Force reload to clear cache
-        forceReload();
-      } else if (!storedVersion) {
-        // First time loading, store the version
-        localStorage.setItem(VERSION_STORAGE_KEY, currentVersion);
-        console.log(`Version stored: ${currentVersion}`);
-      }
-    }
-  }, [healthSuccess, healthStatus?.version, forceReload]);
-}

frontend/src/index.css

@@ -86,5 +86,9 @@
   }
   body {
     @apply bg-background text-foreground;
+    padding-top: var(--safe-area-inset-top);
+    padding-bottom: var(--safe-area-inset-bottom);
+    padding-left: var(--safe-area-inset-left);
+    padding-right: var(--safe-area-inset-right);
   }
 }

frontend/src/lib/api.ts

@@ -4,7 +4,7 @@ import type {
   Transaction,
   AnalyticsTransaction,
   Balance,
-  ApiResponse,
+  PaginatedResponse,
   NotificationSettings,
   NotificationTest,
   NotificationService,
@@ -17,6 +17,10 @@ import type {
   BankConnectionStatus,
   BankRequisition,
   Country,
+  BackupSettings,
+  BackupTest,
+  BackupInfo,
+  BackupOperation,
 } from "../types/api";
 
 // Use VITE_API_URL for development, relative URLs for production
@@ -32,14 +36,14 @@ const api = axios.create({
 export const apiClient = {
   // Get all accounts
   getAccounts: async (): Promise<Account[]> => {
-    const response = await api.get<ApiResponse<Account[]>>("/accounts");
-    return response.data.data;
+    const response = await api.get<Account[]>("/accounts");
+    return response.data;
   },
 
   // Get account by ID
   getAccount: async (id: string): Promise<Account> => {
-    const response = await api.get<ApiResponse<Account>>(`/accounts/${id}`);
-    return response.data.data;
+    const response = await api.get<Account>(`/accounts/${id}`);
+    return response.data;
   },
 
   // Update account details
@@ -47,16 +51,17 @@ export const apiClient = {
     id: string,
     updates: AccountUpdate,
   ): Promise<{ id: string; display_name?: string }> => {
-    const response = await api.put<
-      ApiResponse<{ id: string; display_name?: string }>
-    >(`/accounts/${id}`, updates);
-    return response.data.data;
+    const response = await api.put<{ id: string; display_name?: string }>(
+      `/accounts/${id}`,
+      updates,
+    );
+    return response.data;
   },
 
   // Get all balances
   getBalances: async (): Promise<Balance[]> => {
-    const response = await api.get<ApiResponse<Balance[]>>("/balances");
-    return response.data.data;
+    const response = await api.get<Balance[]>("/balances");
+    return response.data;
   },
 
   // Get historical balances for balance progression chart
@@ -68,18 +73,18 @@ export const apiClient = {
     if (days) queryParams.append("days", days.toString());
     if (accountId) queryParams.append("account_id", accountId);
 
-    const response = await api.get<ApiResponse<Balance[]>>(
+    const response = await api.get<Balance[]>(
       `/balances/history?${queryParams.toString()}`,
     );
-    return response.data.data;
+    return response.data;
   },
 
   // Get balances for specific account
   getAccountBalances: async (accountId: string): Promise<Balance[]> => {
-    const response = await api.get<ApiResponse<Balance[]>>(
+    const response = await api.get<Balance[]>(
       `/accounts/${accountId}/balances`,
     );
-    return response.data.data;
+    return response.data;
   },
 
   // Get transactions with optional filters
@@ -93,7 +98,7 @@ export const apiClient = {
     summaryOnly?: boolean;
     minAmount?: number;
     maxAmount?: number;
-  }): Promise<ApiResponse<Transaction[]>> => {
+  }): Promise<PaginatedResponse<Transaction>> => {
     const queryParams = new URLSearchParams();
 
     if (params?.accountId) queryParams.append("account_id", params.accountId);
@@ -113,7 +118,7 @@ export const apiClient = {
       queryParams.append("max_amount", params.maxAmount.toString());
     }
 
-    const response = await api.get<ApiResponse<Transaction[]>>(
+    const response = await api.get<PaginatedResponse<Transaction>>(
       `/transactions?${queryParams.toString()}`,
     );
     return response.data;
@@ -121,29 +126,27 @@ export const apiClient = {
 
   // Get transaction by ID
   getTransaction: async (id: string): Promise<Transaction> => {
-    const response = await api.get<ApiResponse<Transaction>>(
-      `/transactions/${id}`,
-    );
-    return response.data.data;
+    const response = await api.get<Transaction>(`/transactions/${id}`);
+    return response.data;
   },
 
   // Get notification settings
   getNotificationSettings: async (): Promise<NotificationSettings> => {
-    const response = await api.get<ApiResponse<NotificationSettings>>(
+    const response = await api.get<NotificationSettings>(
       "/notifications/settings",
     );
-    return response.data.data;
+    return response.data;
   },
 
   // Update notification settings
   updateNotificationSettings: async (
     settings: NotificationSettings,
   ): Promise<NotificationSettings> => {
-    const response = await api.put<ApiResponse<NotificationSettings>>(
+    const response = await api.put<NotificationSettings>(
       "/notifications/settings",
       settings,
     );
-    return response.data.data;
+    return response.data;
   },
 
   // Test notification
@@ -153,11 +156,11 @@ export const apiClient = {
 
   // Get notification services
   getNotificationServices: async (): Promise<NotificationService[]> => {
-    const response = await api.get<ApiResponse<NotificationServicesResponse>>(
+    const response = await api.get<NotificationServicesResponse>(
       "/notifications/services",
     );
     // Convert object to array format
-    const servicesData = response.data.data;
+    const servicesData = response.data;
     return Object.values(servicesData);
   },
 
@@ -168,8 +171,8 @@ export const apiClient = {
 
   // Health check
   getHealth: async (): Promise<HealthData> => {
-    const response = await api.get<ApiResponse<HealthData>>("/health");
-    return response.data.data;
+    const response = await api.get<HealthData>("/health");
+    return response.data;
   },
 
   // Analytics endpoints
@@ -177,10 +180,10 @@ export const apiClient = {
     const queryParams = new URLSearchParams();
     if (days) queryParams.append("days", days.toString());
 
-    const response = await api.get<ApiResponse<TransactionStats>>(
+    const response = await api.get<TransactionStats>(
       `/transactions/stats?${queryParams.toString()}`,
     );
-    return response.data.data;
+    return response.data;
   },
 
   // Get all transactions for analytics (no pagination)
@@ -190,10 +193,10 @@ export const apiClient = {
     const queryParams = new URLSearchParams();
     if (days) queryParams.append("days", days.toString());
 
-    const response = await api.get<ApiResponse<AnalyticsTransaction[]>>(
+    const response = await api.get<AnalyticsTransaction[]>(
       `/transactions/analytics?${queryParams.toString()}`,
     );
-    return response.data.data;
+    return response.data;
   },
 
   // Get monthly transaction statistics (pre-calculated)
@@ -211,16 +214,14 @@ export const apiClient = {
     if (days) queryParams.append("days", days.toString());
 
     const response = await api.get<
-      ApiResponse<
-        Array<{
-          month: string;
-          income: number;
-          expenses: number;
-          net: number;
-        }>
-      >
+      Array<{
+        month: string;
+        income: number;
+        expenses: number;
+        net: number;
+      }>
     >(`/transactions/monthly-stats?${queryParams.toString()}`);
-    return response.data.data;
+    return response.data;
   },
 
   // Get sync operations history
@@ -228,24 +229,23 @@ export const apiClient = {
     limit: number = 50,
     offset: number = 0,
   ): Promise<SyncOperationsResponse> => {
-    const response = await api.get<ApiResponse<SyncOperationsResponse>>(
+    const response = await api.get<SyncOperationsResponse>(
       `/sync/operations?limit=${limit}&offset=${offset}`,
     );
-    return response.data.data;
+    return response.data;
   },
 
   // Bank management endpoints
   getBankInstitutions: async (country: string): Promise<BankInstitution[]> => {
-    const response = await api.get<ApiResponse<BankInstitution[]>>(
+    const response = await api.get<BankInstitution[]>(
       `/banks/institutions?country=${country}`,
     );
-    return response.data.data;
+    return response.data;
   },
 
   getBankConnectionsStatus: async (): Promise<BankConnectionStatus[]> => {
-    const response =
-      await api.get<ApiResponse<BankConnectionStatus[]>>("/banks/status");
-    return response.data.data;
+    const response = await api.get<BankConnectionStatus[]>("/banks/status");
+    return response.data;
   },
 
   createBankConnection: async (
@@ -256,14 +256,11 @@ export const apiClient = {
     const finalRedirectUrl =
       redirectUrl || `${window.location.origin}/bank-connected`;
 
-    const response = await api.post<ApiResponse<BankRequisition>>(
-      "/banks/connect",
-      {
-        institution_id: institutionId,
-        redirect_url: finalRedirectUrl,
-      },
-    );
-    return response.data.data;
+    const response = await api.post<BankRequisition>("/banks/connect", {
+      institution_id: institutionId,
+      redirect_url: finalRedirectUrl,
+    });
+    return response.data;
   },
 
   deleteBankConnection: async (requisitionId: string): Promise<void> => {
@@ -271,8 +268,57 @@ export const apiClient = {
   },
 
   getSupportedCountries: async (): Promise<Country[]> => {
-    const response = await api.get<ApiResponse<Country[]>>("/banks/countries");
-    return response.data.data;
+    const response = await api.get<Country[]>("/banks/countries");
+    return response.data;
+  },
+
+  // Backup endpoints
+  getBackupSettings: async (): Promise<BackupSettings> => {
+    const response = await api.get<BackupSettings>("/backup/settings");
+    return response.data;
+  },
+
+  updateBackupSettings: async (
+    settings: BackupSettings,
+  ): Promise<BackupSettings> => {
+    const response = await api.put<BackupSettings>(
+      "/backup/settings",
+      settings,
+    );
+    return response.data;
+  },
+
+  testBackupConnection: async (
+    test: BackupTest,
+  ): Promise<{ connected?: boolean; success?: boolean; message?: string }> => {
+    const response = await api.post<{
+      connected?: boolean;
+      success?: boolean;
+      message?: string;
+    }>("/backup/test", test);
+    return response.data;
+  },
+
+  listBackups: async (): Promise<BackupInfo[]> => {
+    const response = await api.get<BackupInfo[]>("/backup/list");
+    return response.data;
+  },
+
+  performBackupOperation: async (
+    operation: BackupOperation,
+  ): Promise<{
+    operation: string;
+    completed: boolean;
+    success?: boolean;
+    message?: string;
+  }> => {
+    const response = await api.post<{
+      operation: string;
+      completed: boolean;
+      success?: boolean;
+      message?: string;
+    }>("/backup/operation", operation);
+    return response.data;
   },
 };
 

frontend/src/main.tsx

@@ -3,8 +3,10 @@ import { createRoot } from "react-dom/client";
 import { createRouter, RouterProvider } from "@tanstack/react-router";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import { ThemeProvider } from "./contexts/ThemeContext";
+import { BalanceVisibilityProvider } from "./contexts/BalanceVisibilityContext";
 import "./index.css";
 import { routeTree } from "./routeTree.gen";
+import { registerSW } from "virtual:pwa-register";
 
 const router = createRouter({ routeTree });
 
@@ -17,11 +19,64 @@ const queryClient = new QueryClient({
   },
 });
 
+const intervalMS = 60 * 60 * 1000;
+
+registerSW({
+  onRegisteredSW(swUrl, r) {
+    console.log("[PWA] Service worker registered successfully");
+
+    if (r) {
+      setInterval(async () => {
+        console.log("[PWA] Checking for updates...");
+
+        if (r.installing) {
+          console.log("[PWA] Update already installing, skipping check");
+          return;
+        }
+
+        if (!navigator) {
+          console.log("[PWA] Navigator not available, skipping check");
+          return;
+        }
+
+        if ("connection" in navigator && !navigator.onLine) {
+          console.log("[PWA] Device is offline, skipping check");
+          return;
+        }
+
+        try {
+          const resp = await fetch(swUrl, {
+            cache: "no-store",
+            headers: {
+              cache: "no-store",
+              "cache-control": "no-cache",
+            },
+          });
+
+          if (resp?.status === 200) {
+            console.log("[PWA] Update check successful, triggering update");
+            await r.update();
+          } else {
+            console.log(`[PWA] Update check returned status: ${resp?.status}`);
+          }
+        } catch (error) {
+          console.error("[PWA] Error checking for updates:", error);
+        }
+      }, intervalMS);
+    }
+  },
+  onOfflineReady() {
+    console.log("[PWA] App ready to work offline");
+  },
+});
+
 createRoot(document.getElementById("root")!).render(
   <StrictMode>
     <QueryClientProvider client={queryClient}>
       <ThemeProvider>
-        <RouterProvider router={router} />
+        <BalanceVisibilityProvider>
+          <RouterProvider router={router} />
+        </BalanceVisibilityProvider>
       </ThemeProvider>
     </QueryClientProvider>
   </StrictMode>,

frontend/src/routes/__root.tsx

@@ -1,30 +1,10 @@
 import { createRootRoute, Outlet } from "@tanstack/react-router";
 import { AppSidebar } from "../components/AppSidebar";
 import { SiteHeader } from "../components/SiteHeader";
-import { PWAInstallPrompt, PWAUpdatePrompt } from "../components/PWAPrompts";
-import { usePWA } from "../hooks/usePWA";
-import { useVersionCheck } from "../hooks/useVersionCheck";
 import { SidebarInset, SidebarProvider } from "../components/ui/sidebar";
+import { Toaster } from "../components/ui/sonner";
 
 function RootLayout() {
-  const { updateAvailable, updateSW, forceReload } = usePWA();
-
-  // Check for version mismatches and force reload if needed
-  useVersionCheck(forceReload);
-
-  const handlePWAInstall = () => {
-    console.log("PWA installed successfully");
-  };
-
-  const handlePWAUpdate = async () => {
-    try {
-      await updateSW();
-      console.log("PWA updated successfully");
-    } catch (error) {
-      console.error("Error updating PWA:", error);
-    }
-  };
-
   return (
     <SidebarProvider
       style={
@@ -42,12 +22,8 @@ function RootLayout() {
         </main>
       </SidebarInset>
 
-      {/* PWA Prompts */}
-      <PWAInstallPrompt onInstall={handlePWAInstall} />
-      <PWAUpdatePrompt
-        updateAvailable={updateAvailable}
-        onUpdate={handlePWAUpdate}
-      />
+      {/* Toast Notifications */}
+      <Toaster />
     </SidebarProvider>
   );
 }

frontend/src/routes/analytics.tsx

@@ -88,6 +88,7 @@ function AnalyticsDashboard() {
           subtitle="Inflows this period"
           icon={TrendingUp}
           iconColor="green"
+          shouldBlur={true}
         />
         <StatCard
           title="Total Expenses"
@@ -95,6 +96,7 @@ function AnalyticsDashboard() {
           subtitle="Outflows this period"
           icon={TrendingDown}
           iconColor="red"
+          shouldBlur={true}
         />
       </div>
 
@@ -106,6 +108,7 @@ function AnalyticsDashboard() {
           subtitle="Income minus expenses"
           icon={CreditCard}
           iconColor={(stats?.net_change || 0) >= 0 ? "green" : "red"}
+          shouldBlur={true}
         />
         <StatCard
           title="Average Transaction"
@@ -113,6 +116,7 @@ function AnalyticsDashboard() {
           subtitle="Per transaction"
           icon={Activity}
           iconColor="purple"
+          shouldBlur={true}
         />
         <StatCard
           title="Active Accounts"

frontend/src/types/api.ts

@@ -133,26 +133,14 @@ export interface Bank {
   logo_url?: string;
 }
 
-export interface ApiResponse<T> {
-  data: T;
-  message?: string;
-  success: boolean;
-  pagination?: {
-    total: number;
-    page: number;
-    per_page: number;
-    total_pages: number;
-    has_next: boolean;
-    has_prev: boolean;
-  };
-}
-
 export interface PaginatedResponse<T> {
   data: T[];
   total: number;
   page: number;
   per_page: number;
   total_pages: number;
+  has_next: boolean;
+  has_prev: boolean;
 }
 
 // Notification types
@@ -277,3 +265,34 @@ export interface Country {
   code: string;
   name: string;
 }
+
+// Backup types
+export interface S3Config {
+  access_key_id: string;
+  secret_access_key: string;
+  bucket_name: string;
+  region: string;
+  endpoint_url?: string;
+  path_style: boolean;
+  enabled: boolean;
+}
+
+export interface BackupSettings {
+  s3?: S3Config;
+}
+
+export interface BackupTest {
+  service: string;
+  config: S3Config;
+}
+
+export interface BackupInfo {
+  key: string;
+  last_modified: string;
+  size: number;
+}
+
+export interface BackupOperation {
+  operation: string;
+  backup_key?: string;
+}

frontend/vite.config.ts

@@ -11,10 +11,7 @@ export default defineConfig({
     VitePWA({
       registerType: "autoUpdate",
       includeAssets: [
-        "favicon.ico",
-        "apple-touch-icon-180x180.png",
-        "maskable-icon-512x512.png",
-        "robots.txt",
+        "robots.txt"
       ],
       manifest: {
         name: "Leggen",

leggen/api/dependencies.py

@@ -0,0 +1,75 @@
+"""FastAPI dependency injection setup for repositories and services."""
+
+from typing import Annotated
+
+from fastapi import Depends
+
+from leggen.repositories import (
+    AccountRepository,
+    BalanceRepository,
+    MigrationRepository,
+    SyncRepository,
+    TransactionRepository,
+)
+from leggen.services.data_processors import (
+    AnalyticsProcessor,
+    BalanceTransformer,
+    TransactionProcessor,
+)
+from leggen.utils.config import config
+
+
+def get_account_repository() -> AccountRepository:
+    """Get account repository instance."""
+    return AccountRepository()
+
+
+def get_balance_repository() -> BalanceRepository:
+    """Get balance repository instance."""
+    return BalanceRepository()
+
+
+def get_transaction_repository() -> TransactionRepository:
+    """Get transaction repository instance."""
+    return TransactionRepository()
+
+
+def get_sync_repository() -> SyncRepository:
+    """Get sync repository instance."""
+    return SyncRepository()
+
+
+def get_migration_repository() -> MigrationRepository:
+    """Get migration repository instance."""
+    return MigrationRepository()
+
+
+def get_transaction_processor() -> TransactionProcessor:
+    """Get transaction processor instance."""
+    return TransactionProcessor()
+
+
+def get_balance_transformer() -> BalanceTransformer:
+    """Get balance transformer instance."""
+    return BalanceTransformer()
+
+
+def get_analytics_processor() -> AnalyticsProcessor:
+    """Get analytics processor instance."""
+    return AnalyticsProcessor()
+
+
+def is_sqlite_enabled() -> bool:
+    """Check if SQLite is enabled in configuration."""
+    return config.database_config.get("sqlite", True)
+
+
+# Type annotations for dependency injection
+AccountRepo = Annotated[AccountRepository, Depends(get_account_repository)]
+BalanceRepo = Annotated[BalanceRepository, Depends(get_balance_repository)]
+TransactionRepo = Annotated[TransactionRepository, Depends(get_transaction_repository)]
+SyncRepo = Annotated[SyncRepository, Depends(get_sync_repository)]
+MigrationRepo = Annotated[MigrationRepository, Depends(get_migration_repository)]
+TransactionProc = Annotated[TransactionProcessor, Depends(get_transaction_processor)]
+BalanceTransform = Annotated[BalanceTransformer, Depends(get_balance_transformer)]
+AnalyticsProc = Annotated[AnalyticsProcessor, Depends(get_analytics_processor)]

leggen/api/models/backup.py

@@ -0,0 +1,49 @@
+"""API models for backup endpoints."""
+
+from typing import Optional
+
+from pydantic import BaseModel, Field
+
+
+class S3Config(BaseModel):
+    """S3 backup configuration model for API."""
+
+    access_key_id: str = Field(..., description="AWS S3 access key ID")
+    secret_access_key: str = Field(..., description="AWS S3 secret access key")
+    bucket_name: str = Field(..., description="S3 bucket name")
+    region: str = Field(default="us-east-1", description="AWS S3 region")
+    endpoint_url: Optional[str] = Field(
+        default=None, description="Custom S3 endpoint URL"
+    )
+    path_style: bool = Field(default=False, description="Use path-style addressing")
+    enabled: bool = Field(default=True, description="Enable S3 backups")
+
+
+class BackupSettings(BaseModel):
+    """Backup settings model for API."""
+
+    s3: Optional[S3Config] = None
+
+
+class BackupTest(BaseModel):
+    """Backup connection test request model."""
+
+    service: str = Field(..., description="Backup service type (s3)")
+    config: S3Config = Field(..., description="S3 configuration to test")
+
+
+class BackupInfo(BaseModel):
+    """Backup file information model."""
+
+    key: str = Field(..., description="S3 object key")
+    last_modified: str = Field(..., description="Last modified timestamp (ISO format)")
+    size: int = Field(..., description="File size in bytes")
+
+
+class BackupOperation(BaseModel):
+    """Backup operation request model."""
+
+    operation: str = Field(..., description="Operation type (backup, restore)")
+    backup_key: Optional[str] = Field(
+        default=None, description="Backup key for restore operations"
+    )

leggen/api/models/common.py

@@ -1,29 +1,17 @@
-from typing import Any, Dict, Optional
+from typing import Generic, List, TypeVar
 
 from pydantic import BaseModel
 
-
-class APIResponse(BaseModel):
-    """Base API response model"""
-
-    success: bool = True
-    message: Optional[str] = None
-    data: Optional[Any] = None
+T = TypeVar("T")
 
 
-class ErrorResponse(BaseModel):
-    """Error response model"""
-
-    success: bool = False
-    message: str
-    error_code: Optional[str] = None
-    details: Optional[Dict[str, Any]] = None
-
-
-class PaginatedResponse(BaseModel):
+class PaginatedResponse(BaseModel, Generic[T]):
     """Paginated response model"""
 
-    success: bool = True
-    data: list
-    pagination: Dict[str, Any]
-    message: Optional[str] = None
+    data: List[T]
+    total: int
+    page: int
+    per_page: int
+    total_pages: int
+    has_next: bool
+    has_prev: bool

leggen/api/routes/accounts.py

@@ -3,6 +3,12 @@ from typing import List, Optional, Union
 from fastapi import APIRouter, HTTPException, Query
 from loguru import logger
 
+from leggen.api.dependencies import (
+    AccountRepo,
+    AnalyticsProc,
+    BalanceRepo,
+    TransactionRepo,
+)
 from leggen.api.models.accounts import (
     AccountBalance,
     AccountDetails,
@@ -10,29 +16,27 @@ from leggen.api.models.accounts import (
     Transaction,
     TransactionSummary,
 )
-from leggen.api.models.common import APIResponse
-from leggen.services.database_service import DatabaseService
 
 router = APIRouter()
-database_service = DatabaseService()
 
 
-@router.get("/accounts", response_model=APIResponse)
-async def get_all_accounts() -> APIResponse:
+@router.get("/accounts")
+async def get_all_accounts(
+    account_repo: AccountRepo,
+    balance_repo: BalanceRepo,
+) -> List[AccountDetails]:
     """Get all connected accounts from database"""
     try:
         accounts = []
 
         # Get all account details from database
-        db_accounts = await database_service.get_accounts_from_db()
+        db_accounts = account_repo.get_accounts()
 
         # Process accounts found in database
         for db_account in db_accounts:
             try:
                 # Get latest balances from database for this account
-                balances_data = await database_service.get_balances_from_db(
-                    db_account["id"]
-                )
+                balances_data = balance_repo.get_balances(db_account["id"])
 
                 # Process balances
                 balances = []
@@ -68,11 +72,7 @@ async def get_all_accounts() -> APIResponse:
                 )
                 continue
 
-        return APIResponse(
-            success=True,
-            data=accounts,
-            message=f"Retrieved {len(accounts)} accounts from database",
-        )
+        return accounts
 
     except Exception as e:
         logger.error(f"Failed to get accounts: {e}")
@@ -81,12 +81,16 @@ async def get_all_accounts() -> APIResponse:
         ) from e
 
 
-@router.get("/accounts/{account_id}", response_model=APIResponse)
-async def get_account_details(account_id: str) -> APIResponse:
+@router.get("/accounts/{account_id}")
+async def get_account_details(
+    account_id: str,
+    account_repo: AccountRepo,
+    balance_repo: BalanceRepo,
+) -> AccountDetails:
     """Get details for a specific account from database"""
     try:
         # Get account details from database
-        db_account = await database_service.get_account_details_from_db(account_id)
+        db_account = account_repo.get_account(account_id)
 
         if not db_account:
             raise HTTPException(
@@ -94,7 +98,7 @@ async def get_account_details(account_id: str) -> APIResponse:
             )
 
         # Get latest balances from database for this account
-        balances_data = await database_service.get_balances_from_db(account_id)
+        balances_data = balance_repo.get_balances(account_id)
 
         # Process balances
         balances = []
@@ -122,11 +126,7 @@ async def get_account_details(account_id: str) -> APIResponse:
             balances=balances,
         )
 
-        return APIResponse(
-            success=True,
-            data=account,
-            message=f"Account details retrieved from database for {account_id}",
-        )
+        return account
 
     except HTTPException:
         raise
@@ -137,12 +137,15 @@ async def get_account_details(account_id: str) -> APIResponse:
         ) from e
 
 
-@router.get("/accounts/{account_id}/balances", response_model=APIResponse)
-async def get_account_balances(account_id: str) -> APIResponse:
+@router.get("/accounts/{account_id}/balances")
+async def get_account_balances(
+    account_id: str,
+    balance_repo: BalanceRepo,
+) -> List[AccountBalance]:
     """Get balances for a specific account from database"""
     try:
         # Get balances from database instead of GoCardless API
-        db_balances = await database_service.get_balances_from_db(account_id=account_id)
+        db_balances = balance_repo.get_balances(account_id=account_id)
 
         balances = []
         for balance in db_balances:
@@ -155,11 +158,7 @@ async def get_account_balances(account_id: str) -> APIResponse:
                 )
             )
 
-        return APIResponse(
-            success=True,
-            data=balances,
-            message=f"Retrieved {len(balances)} balances for account {account_id}",
-        )
+        return balances
 
     except Exception as e:
         logger.error(
@@ -170,20 +169,21 @@ async def get_account_balances(account_id: str) -> APIResponse:
         ) from e
 
 
-@router.get("/balances", response_model=APIResponse)
-async def get_all_balances() -> APIResponse:
+@router.get("/balances")
+async def get_all_balances(
+    account_repo: AccountRepo,
+    balance_repo: BalanceRepo,
+) -> List[dict]:
     """Get all balances from all accounts in database"""
     try:
         # Get all accounts first to iterate through them
-        db_accounts = await database_service.get_accounts_from_db()
+        db_accounts = account_repo.get_accounts()
 
         all_balances = []
         for db_account in db_accounts:
             try:
                 # Get balances for this account
-                db_balances = await database_service.get_balances_from_db(
-                    account_id=db_account["id"]
-                )
+                db_balances = balance_repo.get_balances(account_id=db_account["id"])
 
                 # Process balances and add account info
                 for balance in db_balances:
@@ -207,11 +207,7 @@ async def get_all_balances() -> APIResponse:
                 )
                 continue
 
-        return APIResponse(
-            success=True,
-            data=all_balances,
-            message=f"Retrieved {len(all_balances)} balances from {len(db_accounts)} accounts",
-        )
+        return all_balances
 
     except Exception as e:
         logger.error(f"Failed to get all balances: {e}")
@@ -220,27 +216,27 @@ async def get_all_balances() -> APIResponse:
         ) from e
 
 
-@router.get("/balances/history", response_model=APIResponse)
+@router.get("/balances/history")
 async def get_historical_balances(
+    analytics_proc: AnalyticsProc,
     days: Optional[int] = Query(
         default=365, le=1095, ge=1, description="Number of days of history to retrieve"
     ),
     account_id: Optional[str] = Query(
         default=None, description="Filter by specific account ID"
     ),
-) -> APIResponse:
+) -> List[dict]:
     """Get historical balance progression calculated from transaction history"""
     try:
+        from leggen.utils.paths import path_manager
+
         # Get historical balances from database
-        historical_balances = await database_service.get_historical_balances_from_db(
-            account_id=account_id, days=days or 365
+        db_path = path_manager.get_database_path()
+        historical_balances = analytics_proc.calculate_historical_balances(
+            db_path, account_id=account_id, days=days or 365
         )
 
-        return APIResponse(
-            success=True,
-            data=historical_balances,
-            message=f"Retrieved {len(historical_balances)} historical balance points over {days} days",
-        )
+        return historical_balances
 
     except Exception as e:
         logger.error(f"Failed to get historical balances: {e}")
@@ -249,27 +245,23 @@ async def get_historical_balances(
         ) from e
 
 
-@router.get("/accounts/{account_id}/transactions", response_model=APIResponse)
+@router.get("/accounts/{account_id}/transactions")
 async def get_account_transactions(
     account_id: str,
+    transaction_repo: TransactionRepo,
     limit: Optional[int] = Query(default=100, le=500),
     offset: Optional[int] = Query(default=0, ge=0),
     summary_only: bool = Query(
         default=False, description="Return transaction summaries only"
     ),
-) -> APIResponse:
+) -> Union[List[TransactionSummary], List[Transaction]]:
     """Get transactions for a specific account from database"""
     try:
         # Get transactions from database instead of GoCardless API
-        db_transactions = await database_service.get_transactions_from_db(
+        db_transactions = transaction_repo.get_transactions(
             account_id=account_id,
             limit=limit,
-            offset=offset,
-        )
-
-        # Get total count for pagination info
-        total_transactions = await database_service.get_transaction_count_from_db(
-            account_id=account_id,
+            offset=offset or 0,
         )
 
         data: Union[List[TransactionSummary], List[Transaction]]
@@ -308,12 +300,7 @@ async def get_account_transactions(
                 for txn in db_transactions
             ]
 
-        actual_offset = offset or 0
-        return APIResponse(
-            success=True,
-            data=data,
-            message=f"Retrieved {len(data)} transactions (showing {actual_offset + 1}-{actual_offset + len(data)} of {total_transactions})",
-        )
+        return data
 
     except Exception as e:
         logger.error(
@@ -324,14 +311,16 @@ async def get_account_transactions(
         ) from e
 
 
-@router.put("/accounts/{account_id}", response_model=APIResponse)
+@router.put("/accounts/{account_id}")
 async def update_account_details(
-    account_id: str, update_data: AccountUpdate
-) -> APIResponse:
+    account_id: str,
+    update_data: AccountUpdate,
+    account_repo: AccountRepo,
+) -> dict:
     """Update account details (currently only display_name)"""
     try:
         # Get current account details
-        current_account = await database_service.get_account_details_from_db(account_id)
+        current_account = account_repo.get_account(account_id)
 
         if not current_account:
             raise HTTPException(
@@ -344,13 +333,9 @@ async def update_account_details(
             updated_account_data["display_name"] = update_data.display_name
 
         # Persist updated account details
-        await database_service.persist_account_details(updated_account_data)
+        account_repo.persist(updated_account_data)
 
-        return APIResponse(
-            success=True,
-            data={"id": account_id, "display_name": update_data.display_name},
-            message=f"Account {account_id} display name updated successfully",
-        )
+        return {"id": account_id, "display_name": update_data.display_name}
 
     except HTTPException:
         raise

leggen/api/routes/backup.py

@@ -0,0 +1,226 @@
+"""API routes for backup management."""
+
+from fastapi import APIRouter, HTTPException
+from loguru import logger
+
+from leggen.api.models.backup import (
+    BackupOperation,
+    BackupSettings,
+    BackupTest,
+    S3Config,
+)
+from leggen.models.config import S3BackupConfig
+from leggen.services.backup_service import BackupService
+from leggen.utils.config import config
+from leggen.utils.paths import path_manager
+
+router = APIRouter()
+
+
+@router.get("/backup/settings")
+async def get_backup_settings() -> BackupSettings:
+    """Get current backup settings."""
+    try:
+        backup_config = config.backup_config
+
+        # Build response safely without exposing secrets
+        s3_config = backup_config.get("s3", {})
+
+        settings = BackupSettings(
+            s3=S3Config(
+                access_key_id="***" if s3_config.get("access_key_id") else "",
+                secret_access_key="***" if s3_config.get("secret_access_key") else "",
+                bucket_name=s3_config.get("bucket_name", ""),
+                region=s3_config.get("region", "us-east-1"),
+                endpoint_url=s3_config.get("endpoint_url"),
+                path_style=s3_config.get("path_style", False),
+                enabled=s3_config.get("enabled", True),
+            )
+            if s3_config.get("bucket_name")
+            else None,
+        )
+
+        return settings
+
+    except Exception as e:
+        logger.error(f"Failed to get backup settings: {e}")
+        raise HTTPException(
+            status_code=500, detail=f"Failed to get backup settings: {str(e)}"
+        ) from e
+
+
+@router.put("/backup/settings")
+async def update_backup_settings(settings: BackupSettings) -> dict:
+    """Update backup settings."""
+    try:
+        # First test the connection if S3 config is provided
+        if settings.s3:
+            # Convert API model to config model
+            s3_config = S3BackupConfig(
+                access_key_id=settings.s3.access_key_id,
+                secret_access_key=settings.s3.secret_access_key,
+                bucket_name=settings.s3.bucket_name,
+                region=settings.s3.region,
+                endpoint_url=settings.s3.endpoint_url,
+                path_style=settings.s3.path_style,
+                enabled=settings.s3.enabled,
+            )
+
+            # Test connection
+            backup_service = BackupService()
+            connection_success = await backup_service.test_connection(s3_config)
+
+            if not connection_success:
+                raise HTTPException(
+                    status_code=400,
+                    detail="S3 connection test failed. Please check your configuration.",
+                )
+
+        # Update backup config
+        backup_config = {}
+
+        if settings.s3:
+            backup_config["s3"] = {
+                "access_key_id": settings.s3.access_key_id,
+                "secret_access_key": settings.s3.secret_access_key,
+                "bucket_name": settings.s3.bucket_name,
+                "region": settings.s3.region,
+                "endpoint_url": settings.s3.endpoint_url,
+                "path_style": settings.s3.path_style,
+                "enabled": settings.s3.enabled,
+            }
+
+        # Save to config
+        if backup_config:
+            config.update_section("backup", backup_config)
+
+        return {"updated": True}
+
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Failed to update backup settings: {e}")
+        raise HTTPException(
+            status_code=500, detail=f"Failed to update backup settings: {str(e)}"
+        ) from e
+
+
+@router.post("/backup/test")
+async def test_backup_connection(test_request: BackupTest) -> dict:
+    """Test backup connection."""
+    try:
+        if test_request.service != "s3":
+            raise HTTPException(
+                status_code=400, detail="Only 's3' service is supported"
+            )
+
+        # Convert API model to config model
+        s3_config = S3BackupConfig(
+            access_key_id=test_request.config.access_key_id,
+            secret_access_key=test_request.config.secret_access_key,
+            bucket_name=test_request.config.bucket_name,
+            region=test_request.config.region,
+            endpoint_url=test_request.config.endpoint_url,
+            path_style=test_request.config.path_style,
+            enabled=test_request.config.enabled,
+        )
+
+        backup_service = BackupService()
+        success = await backup_service.test_connection(s3_config)
+
+        if not success:
+            raise HTTPException(status_code=400, detail="S3 connection test failed")
+
+        return {"connected": True}
+
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Failed to test backup connection: {e}")
+        raise HTTPException(
+            status_code=500, detail=f"Failed to test backup connection: {str(e)}"
+        ) from e
+
+
+@router.get("/backup/list")
+async def list_backups() -> list:
+    """List available backups."""
+    try:
+        backup_config = config.backup_config.get("s3", {})
+
+        if not backup_config.get("bucket_name"):
+            return []
+
+        # Convert config to model
+        s3_config = S3BackupConfig(**backup_config)
+        backup_service = BackupService(s3_config)
+
+        backups = await backup_service.list_backups()
+
+        return backups
+
+    except Exception as e:
+        logger.error(f"Failed to list backups: {e}")
+        raise HTTPException(
+            status_code=500, detail=f"Failed to list backups: {str(e)}"
+        ) from e
+
+
+@router.post("/backup/operation")
+async def backup_operation(operation_request: BackupOperation) -> dict:
+    """Perform backup operation (backup or restore)."""
+    try:
+        backup_config = config.backup_config.get("s3", {})
+
+        if not backup_config.get("bucket_name"):
+            raise HTTPException(status_code=400, detail="S3 backup is not configured")
+
+        # Convert config to model with validation
+        try:
+            s3_config = S3BackupConfig(**backup_config)
+        except Exception as e:
+            raise HTTPException(
+                status_code=400, detail=f"Invalid S3 configuration: {str(e)}"
+            ) from e
+
+        backup_service = BackupService(s3_config)
+
+        if operation_request.operation == "backup":
+            # Backup database
+            database_path = path_manager.get_database_path()
+            success = await backup_service.backup_database(database_path)
+
+            if not success:
+                raise HTTPException(status_code=500, detail="Database backup failed")
+
+            return {"operation": "backup", "completed": True}
+
+        elif operation_request.operation == "restore":
+            if not operation_request.backup_key:
+                raise HTTPException(
+                    status_code=400,
+                    detail="backup_key is required for restore operation",
+                )
+
+            # Restore database
+            database_path = path_manager.get_database_path()
+            success = await backup_service.restore_database(
+                operation_request.backup_key, database_path
+            )
+
+            if not success:
+                raise HTTPException(status_code=500, detail="Database restore failed")
+
+            return {"operation": "restore", "completed": True}
+        else:
+            raise HTTPException(
+                status_code=400, detail="Invalid operation. Use 'backup' or 'restore'"
+            )
+
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Failed to perform backup operation: {e}")
+        raise HTTPException(
+            status_code=500, detail=f"Failed to perform backup operation: {str(e)}"
+        ) from e

leggen/api/routes/banks.py

@@ -8,7 +8,6 @@ from leggen.api.models.banks import (
     BankInstitution,
     BankRequisition,
 )
-from leggen.api.models.common import APIResponse
 from leggen.services.gocardless_service import GoCardlessService
 from leggen.utils.gocardless import REQUISITION_STATUS
 
@@ -16,10 +15,10 @@ router = APIRouter()
 gocardless_service = GoCardlessService()
 
 
-@router.get("/banks/institutions", response_model=APIResponse)
+@router.get("/banks/institutions")
 async def get_bank_institutions(
     country: str = Query(default="PT", description="Country code (e.g., PT, ES, FR)"),
-) -> APIResponse:
+) -> list[BankInstitution]:
     """Get available bank institutions for a country"""
     try:
         institutions_response = await gocardless_service.get_institutions(country)
@@ -41,11 +40,7 @@ async def get_bank_institutions(
             for inst in institutions_data
         ]
 
-        return APIResponse(
-            success=True,
-            data=institutions,
-            message=f"Found {len(institutions)} institutions for {country}",
-        )
+        return institutions
 
     except Exception as e:
         logger.error(f"Failed to get institutions for {country}: {e}")
@@ -54,8 +49,8 @@ async def get_bank_institutions(
         ) from e
 
 
-@router.post("/banks/connect", response_model=APIResponse)
-async def connect_to_bank(request: BankConnectionRequest) -> APIResponse:
+@router.post("/banks/connect")
+async def connect_to_bank(request: BankConnectionRequest) -> BankRequisition:
     """Create a connection to a bank (requisition)"""
     try:
         redirect_url = request.redirect_url or "http://localhost:8000/"
@@ -72,11 +67,7 @@ async def connect_to_bank(request: BankConnectionRequest) -> APIResponse:
             accounts=requisition_data.get("accounts", []),
         )
 
-        return APIResponse(
-            success=True,
-            data=requisition,
-            message="Bank connection created. Please visit the link to authorize.",
-        )
+        return requisition
 
     except Exception as e:
         logger.error(f"Failed to connect to bank {request.institution_id}: {e}")
@@ -85,8 +76,8 @@ async def connect_to_bank(request: BankConnectionRequest) -> APIResponse:
         ) from e
 
 
-@router.get("/banks/status", response_model=APIResponse)
-async def get_bank_connections_status() -> APIResponse:
+@router.get("/banks/status")
+async def get_bank_connections_status() -> list[BankConnectionStatus]:
     """Get status of all bank connections"""
     try:
         requisitions_data = await gocardless_service.get_requisitions()
@@ -110,11 +101,7 @@ async def get_bank_connections_status() -> APIResponse:
                 )
             )
 
-        return APIResponse(
-            success=True,
-            data=connections,
-            message=f"Found {len(connections)} bank connections",
-        )
+        return connections
 
     except Exception as e:
         logger.error(f"Failed to get bank connection status: {e}")
@@ -123,8 +110,8 @@ async def get_bank_connections_status() -> APIResponse:
         ) from e
 
 
-@router.delete("/banks/connections/{requisition_id}", response_model=APIResponse)
-async def delete_bank_connection(requisition_id: str) -> APIResponse:
+@router.delete("/banks/connections/{requisition_id}")
+async def delete_bank_connection(requisition_id: str) -> dict:
     """Delete a bank connection"""
     try:
         # Delete the requisition from GoCardless
@@ -134,10 +121,7 @@ async def delete_bank_connection(requisition_id: str) -> APIResponse:
         # We should check if the operation was actually successful
         logger.info(f"GoCardless delete response for {requisition_id}: {result}")
 
-        return APIResponse(
-            success=True,
-            message=f"Bank connection {requisition_id} deleted successfully",
-        )
+        return {"deleted": requisition_id}
 
     except httpx.HTTPStatusError as http_err:
         logger.error(
@@ -164,8 +148,8 @@ async def delete_bank_connection(requisition_id: str) -> APIResponse:
         ) from e
 
 
-@router.get("/banks/countries", response_model=APIResponse)
-async def get_supported_countries() -> APIResponse:
+@router.get("/banks/countries")
+async def get_supported_countries() -> list[dict]:
     """Get list of supported countries"""
     countries = [
         {"code": "AT", "name": "Austria"},
@@ -201,8 +185,4 @@ async def get_supported_countries() -> APIResponse:
         {"code": "GB", "name": "United Kingdom"},
     ]
 
-    return APIResponse(
-        success=True,
-        data=countries,
-        message="Supported countries retrieved successfully",
-    )
+    return countries

leggen/api/routes/notifications.py

@@ -3,7 +3,6 @@ from typing import Any, Dict
 from fastapi import APIRouter, HTTPException
 from loguru import logger
 
-from leggen.api.models.common import APIResponse
 from leggen.api.models.notifications import (
     DiscordConfig,
     NotificationFilters,
@@ -18,8 +17,8 @@ router = APIRouter()
 notification_service = NotificationService()
 
 
-@router.get("/notifications/settings", response_model=APIResponse)
-async def get_notification_settings() -> APIResponse:
+@router.get("/notifications/settings")
+async def get_notification_settings() -> NotificationSettings:
     """Get current notification settings"""
     try:
         notifications_config = config.notifications_config
@@ -49,11 +48,7 @@ async def get_notification_settings() -> APIResponse:
             ),
         )
 
-        return APIResponse(
-            success=True,
-            data=settings,
-            message="Notification settings retrieved successfully",
-        )
+        return settings
 
     except Exception as e:
         logger.error(f"Failed to get notification settings: {e}")
@@ -62,8 +57,8 @@ async def get_notification_settings() -> APIResponse:
         ) from e
 
 
-@router.put("/notifications/settings", response_model=APIResponse)
-async def update_notification_settings(settings: NotificationSettings) -> APIResponse:
+@router.put("/notifications/settings")
+async def update_notification_settings(settings: NotificationSettings) -> dict:
     """Update notification settings"""
     try:
         # Update notifications config
@@ -95,11 +90,7 @@ async def update_notification_settings(settings: NotificationSettings) -> APIRes
         if filters_config:
             config.update_section("filters", filters_config)
 
-        return APIResponse(
-            success=True,
-            data={"updated": True},
-            message="Notification settings updated successfully",
-        )
+        return {"updated": True}
 
     except Exception as e:
         logger.error(f"Failed to update notification settings: {e}")
@@ -108,26 +99,24 @@ async def update_notification_settings(settings: NotificationSettings) -> APIRes
         ) from e
 
 
-@router.post("/notifications/test", response_model=APIResponse)
-async def test_notification(test_request: NotificationTest) -> APIResponse:
+@router.post("/notifications/test")
+async def test_notification(test_request: NotificationTest) -> dict:
     """Send a test notification"""
     try:
         success = await notification_service.send_test_notification(
             test_request.service, test_request.message
         )
 
-        if success:
-            return APIResponse(
-                success=True,
-                data={"sent": True},
-                message=f"Test notification sent to {test_request.service} successfully",
-            )
-        else:
-            return APIResponse(
-                success=False,
-                message=f"Failed to send test notification to {test_request.service}",
+        if not success:
+            raise HTTPException(
+                status_code=400,
+                detail=f"Failed to send test notification to {test_request.service}",
             )
 
+        return {"sent": True}
+
+    except HTTPException:
+        raise
     except Exception as e:
         logger.error(f"Failed to send test notification: {e}")
         raise HTTPException(
@@ -135,8 +124,8 @@ async def test_notification(test_request: NotificationTest) -> APIResponse:
         ) from e
 
 
-@router.get("/notifications/services", response_model=APIResponse)
-async def get_notification_services() -> APIResponse:
+@router.get("/notifications/services")
+async def get_notification_services() -> dict:
     """Get available notification services and their status"""
     try:
         notifications_config = config.notifications_config
@@ -164,11 +153,7 @@ async def get_notification_services() -> APIResponse:
             },
         }
 
-        return APIResponse(
-            success=True,
-            data=services,
-            message="Notification services status retrieved successfully",
-        )
+        return services
 
     except Exception as e:
         logger.error(f"Failed to get notification services: {e}")
@@ -177,8 +162,8 @@ async def get_notification_services() -> APIResponse:
         ) from e
 
 
-@router.delete("/notifications/settings/{service}", response_model=APIResponse)
-async def delete_notification_service(service: str) -> APIResponse:
+@router.delete("/notifications/settings/{service}")
+async def delete_notification_service(service: str) -> dict:
     """Delete/disable a notification service"""
     try:
         if service not in ["discord", "telegram"]:
@@ -191,12 +176,10 @@ async def delete_notification_service(service: str) -> APIResponse:
             del notifications_config[service]
             config.update_section("notifications", notifications_config)
 
-        return APIResponse(
-            success=True,
-            data={"deleted": service},
-            message=f"{service.capitalize()} notification service deleted successfully",
-        )
+        return {"deleted": service}
 
+    except HTTPException:
+        raise
     except Exception as e:
         logger.error(f"Failed to delete notification service {service}: {e}")
         raise HTTPException(

leggen/api/routes/sync.py

@@ -3,8 +3,7 @@ from typing import Optional
 from fastapi import APIRouter, BackgroundTasks, HTTPException
 from loguru import logger
 
-from leggen.api.models.common import APIResponse
-from leggen.api.models.sync import SchedulerConfig, SyncRequest
+from leggen.api.models.sync import SchedulerConfig, SyncRequest, SyncResult, SyncStatus
 from leggen.background.scheduler import scheduler
 from leggen.services.sync_service import SyncService
 from leggen.utils.config import config
@@ -13,8 +12,8 @@ router = APIRouter()
 sync_service = SyncService()
 
 
-@router.get("/sync/status", response_model=APIResponse)
-async def get_sync_status() -> APIResponse:
+@router.get("/sync/status")
+async def get_sync_status() -> SyncStatus:
     """Get current sync status"""
     try:
         status = await sync_service.get_sync_status()
@@ -24,9 +23,7 @@ async def get_sync_status() -> APIResponse:
         if next_sync_time:
             status.next_sync = next_sync_time
 
-        return APIResponse(
-            success=True, data=status, message="Sync status retrieved successfully"
-        )
+        return status
 
     except Exception as e:
         logger.error(f"Failed to get sync status: {e}")
@@ -35,18 +32,18 @@ async def get_sync_status() -> APIResponse:
         ) from e
 
 
-@router.post("/sync", response_model=APIResponse)
+@router.post("/sync")
 async def trigger_sync(
     background_tasks: BackgroundTasks, sync_request: Optional[SyncRequest] = None
-) -> APIResponse:
+) -> dict:
     """Trigger a manual sync operation"""
     try:
         # Check if sync is already running
         status = await sync_service.get_sync_status()
         if status.is_running and not (sync_request and sync_request.force):
-            return APIResponse(
-                success=False,
-                message="Sync is already running. Use 'force: true' to override.",
+            raise HTTPException(
+                status_code=409,
+                detail="Sync is already running. Use 'force: true' to override.",
             )
 
         # Determine what to sync
@@ -58,9 +55,6 @@ async def trigger_sync(
                 sync_request.force if sync_request else False,
                 "api",  # trigger_type
             )
-            message = (
-                f"Started sync for {len(sync_request.account_ids)} specific accounts"
-            )
         else:
             # Sync all accounts in background
             background_tasks.add_task(
@@ -68,17 +62,14 @@ async def trigger_sync(
                 sync_request.force if sync_request else False,
                 "api",  # trigger_type
             )
-            message = "Started sync for all accounts"
 
-        return APIResponse(
-            success=True,
-            data={
-                "sync_started": True,
-                "force": sync_request.force if sync_request else False,
-            },
-            message=message,
-        )
+        return {
+            "sync_started": True,
+            "force": sync_request.force if sync_request else False,
+        }
 
+    except HTTPException:
+        raise
     except Exception as e:
         logger.error(f"Failed to trigger sync: {e}")
         raise HTTPException(
@@ -86,8 +77,8 @@ async def trigger_sync(
         ) from e
 
 
-@router.post("/sync/now", response_model=APIResponse)
-async def sync_now(sync_request: Optional[SyncRequest] = None) -> APIResponse:
+@router.post("/sync/now")
+async def sync_now(sync_request: Optional[SyncRequest] = None) -> SyncResult:
     """Run sync synchronously and return results (slower, for testing)"""
     try:
         if sync_request and sync_request.account_ids:
@@ -99,13 +90,7 @@ async def sync_now(sync_request: Optional[SyncRequest] = None) -> APIResponse:
                 sync_request.force if sync_request else False, "api"
             )
 
-        return APIResponse(
-            success=result.success,
-            data=result,
-            message="Sync completed"
-            if result.success
-            else f"Sync failed with {len(result.errors)} errors",
-        )
+        return result
 
     except Exception as e:
         logger.error(f"Failed to run sync: {e}")
@@ -114,8 +99,8 @@ async def sync_now(sync_request: Optional[SyncRequest] = None) -> APIResponse:
         ) from e
 
 
-@router.get("/sync/scheduler", response_model=APIResponse)
-async def get_scheduler_config() -> APIResponse:
+@router.get("/sync/scheduler")
+async def get_scheduler_config() -> dict:
     """Get current scheduler configuration"""
     try:
         scheduler_config = config.scheduler_config
@@ -131,11 +116,7 @@ async def get_scheduler_config() -> APIResponse:
             else False,
         }
 
-        return APIResponse(
-            success=True,
-            data=response_data,
-            message="Scheduler configuration retrieved successfully",
-        )
+        return response_data
 
     except Exception as e:
         logger.error(f"Failed to get scheduler config: {e}")
@@ -144,8 +125,8 @@ async def get_scheduler_config() -> APIResponse:
         ) from e
 
 
-@router.put("/sync/scheduler", response_model=APIResponse)
-async def update_scheduler_config(scheduler_config: SchedulerConfig) -> APIResponse:
+@router.put("/sync/scheduler")
+async def update_scheduler_config(scheduler_config: SchedulerConfig) -> dict:
     """Update scheduler configuration"""
     try:
         # Validate cron expression if provided
@@ -168,12 +149,10 @@ async def update_scheduler_config(scheduler_config: SchedulerConfig) -> APIRespo
         # Reschedule the job
         scheduler.reschedule_sync(schedule_data)
 
-        return APIResponse(
-            success=True,
-            data=schedule_data,
-            message="Scheduler configuration updated successfully",
-        )
+        return schedule_data
 
+    except HTTPException:
+        raise
     except Exception as e:
         logger.error(f"Failed to update scheduler config: {e}")
         raise HTTPException(
@@ -181,15 +160,15 @@ async def update_scheduler_config(scheduler_config: SchedulerConfig) -> APIRespo
         ) from e
 
 
-@router.post("/sync/scheduler/start", response_model=APIResponse)
-async def start_scheduler() -> APIResponse:
+@router.post("/sync/scheduler/start")
+async def start_scheduler() -> dict:
     """Start the background scheduler"""
     try:
         if not scheduler.scheduler.running:
             scheduler.start()
-            return APIResponse(success=True, message="Scheduler started successfully")
+            return {"started": True}
         else:
-            return APIResponse(success=True, message="Scheduler is already running")
+            return {"started": False, "message": "Scheduler is already running"}
 
     except Exception as e:
         logger.error(f"Failed to start scheduler: {e}")
@@ -198,15 +177,15 @@ async def start_scheduler() -> APIResponse:
         ) from e
 
 
-@router.post("/sync/scheduler/stop", response_model=APIResponse)
-async def stop_scheduler() -> APIResponse:
+@router.post("/sync/scheduler/stop")
+async def stop_scheduler() -> dict:
     """Stop the background scheduler"""
     try:
         if scheduler.scheduler.running:
             scheduler.shutdown()
-            return APIResponse(success=True, message="Scheduler stopped successfully")
+            return {"stopped": True}
         else:
-            return APIResponse(success=True, message="Scheduler is already stopped")
+            return {"stopped": False, "message": "Scheduler is already stopped"}
 
     except Exception as e:
         logger.error(f"Failed to stop scheduler: {e}")
@@ -215,19 +194,16 @@ async def stop_scheduler() -> APIResponse:
         ) from e
 
 
-@router.get("/sync/operations", response_model=APIResponse)
-async def get_sync_operations(limit: int = 50, offset: int = 0) -> APIResponse:
+@router.get("/sync/operations")
+async def get_sync_operations(limit: int = 50, offset: int = 0) -> dict:
     """Get sync operations history"""
     try:
-        operations = await sync_service.database.get_sync_operations(
-            limit=limit, offset=offset
-        )
+        from leggen.repositories import SyncRepository
 
-        return APIResponse(
-            success=True,
-            data={"operations": operations, "count": len(operations)},
-            message="Sync operations retrieved successfully",
-        )
+        sync_repo = SyncRepository()
+        operations = sync_repo.get_operations(limit=limit, offset=offset)
+
+        return {"operations": operations, "count": len(operations)}
 
     except Exception as e:
         logger.error(f"Failed to get sync operations: {e}")

leggen/api/routes/transactions.py

@@ -4,16 +4,16 @@ from typing import List, Optional, Union
 from fastapi import APIRouter, HTTPException, Query
 from loguru import logger
 
+from leggen.api.dependencies import AnalyticsProc, TransactionRepo
 from leggen.api.models.accounts import Transaction, TransactionSummary
-from leggen.api.models.common import APIResponse, PaginatedResponse
-from leggen.services.database_service import DatabaseService
+from leggen.api.models.common import PaginatedResponse
 
 router = APIRouter()
-database_service = DatabaseService()
 
 
-@router.get("/transactions", response_model=PaginatedResponse)
+@router.get("/transactions")
 async def get_all_transactions(
+    transaction_repo: TransactionRepo,
     page: int = Query(default=1, ge=1, description="Page number (1-based)"),
     per_page: int = Query(default=50, le=500, description="Items per page"),
     summary_only: bool = Query(
@@ -35,7 +35,7 @@ async def get_all_transactions(
         default=None, description="Search in transaction descriptions"
     ),
     account_id: Optional[str] = Query(default=None, description="Filter by account ID"),
-) -> PaginatedResponse:
+) -> PaginatedResponse[Union[TransactionSummary, Transaction]]:
     """Get all transactions from database with filtering options"""
     try:
         # Calculate offset from page and per_page
@@ -43,7 +43,7 @@ async def get_all_transactions(
         limit = per_page
 
         # Get transactions from database instead of GoCardless API
-        db_transactions = await database_service.get_transactions_from_db(
+        db_transactions = transaction_repo.get_transactions(
             account_id=account_id,
             limit=limit,
             offset=offset,
@@ -55,7 +55,7 @@ async def get_all_transactions(
         )
 
         # Get total count for pagination info (respecting the same filters)
-        total_transactions = await database_service.get_transaction_count_from_db(
+        total_transactions = transaction_repo.get_count(
             account_id=account_id,
             date_from=date_from,
             date_to=date_to,
@@ -64,11 +64,9 @@ async def get_all_transactions(
             search=search,
         )
 
-        data: Union[List[TransactionSummary], List[Transaction]]
-
         if summary_only:
             # Return simplified transaction summaries
-            data = [
+            data: list[TransactionSummary | Transaction] = [
                 TransactionSummary(
                     transaction_id=txn["transactionId"],  # NEW: stable bank-provided ID
                     internal_transaction_id=txn.get("internalTransactionId"),
@@ -103,16 +101,13 @@ async def get_all_transactions(
         total_pages = (total_transactions + per_page - 1) // per_page
 
         return PaginatedResponse(
-            success=True,
             data=data,
-            pagination={
-                "total": total_transactions,
-                "page": page,
-                "per_page": per_page,
-                "total_pages": total_pages,
-                "has_next": page < total_pages,
-                "has_prev": page > 1,
-            },
+            total=total_transactions,
+            page=page,
+            per_page=per_page,
+            total_pages=total_pages,
+            has_next=page < total_pages,
+            has_prev=page > 1,
         )
 
     except Exception as e:
@@ -122,11 +117,12 @@ async def get_all_transactions(
         ) from e
 
 
-@router.get("/transactions/stats", response_model=APIResponse)
+@router.get("/transactions/stats")
 async def get_transaction_stats(
+    transaction_repo: TransactionRepo,
     days: int = Query(default=30, description="Number of days to include in stats"),
     account_id: Optional[str] = Query(default=None, description="Filter by account ID"),
-) -> APIResponse:
+) -> dict:
     """Get transaction statistics for the last N days from database"""
     try:
         # Date range for stats
@@ -138,7 +134,7 @@ async def get_transaction_stats(
         date_to = end_date.isoformat()
 
         # Get transactions from database
-        recent_transactions = await database_service.get_transactions_from_db(
+        recent_transactions = transaction_repo.get_transactions(
             account_id=account_id,
             date_from=date_from,
             date_to=date_to,
@@ -192,11 +188,7 @@ async def get_transaction_stats(
             "accounts_included": unique_accounts,
         }
 
-        return APIResponse(
-            success=True,
-            data=stats,
-            message=f"Transaction statistics for last {days} days",
-        )
+        return stats
 
     except Exception as e:
         logger.error(f"Failed to get transaction stats from database: {e}")
@@ -205,11 +197,12 @@ async def get_transaction_stats(
         ) from e
 
 
-@router.get("/transactions/analytics", response_model=APIResponse)
+@router.get("/transactions/analytics")
 async def get_transactions_for_analytics(
+    transaction_repo: TransactionRepo,
     days: int = Query(default=365, description="Number of days to include"),
     account_id: Optional[str] = Query(default=None, description="Filter by account ID"),
-) -> APIResponse:
+) -> List[dict]:
     """Get all transactions for analytics (no pagination) for the last N days"""
     try:
         # Date range for analytics
@@ -221,7 +214,7 @@ async def get_transactions_for_analytics(
         date_to = end_date.isoformat()
 
         # Get ALL transactions from database (no limit for analytics)
-        transactions = await database_service.get_transactions_from_db(
+        transactions = transaction_repo.get_transactions(
             account_id=account_id,
             date_from=date_from,
             date_to=date_to,
@@ -242,11 +235,7 @@ async def get_transactions_for_analytics(
             for txn in transactions
         ]
 
-        return APIResponse(
-            success=True,
-            data=transaction_summaries,
-            message=f"Retrieved {len(transaction_summaries)} transactions for analytics",
-        )
+        return transaction_summaries
 
     except Exception as e:
         logger.error(f"Failed to get transactions for analytics: {e}")
@@ -255,13 +244,16 @@ async def get_transactions_for_analytics(
         ) from e
 
 
-@router.get("/transactions/monthly-stats", response_model=APIResponse)
+@router.get("/transactions/monthly-stats")
 async def get_monthly_transaction_stats(
+    analytics_proc: AnalyticsProc,
     days: int = Query(default=365, description="Number of days to include"),
     account_id: Optional[str] = Query(default=None, description="Filter by account ID"),
-) -> APIResponse:
+) -> List[dict]:
     """Get monthly transaction statistics aggregated by the database"""
     try:
+        from leggen.utils.paths import path_manager
+
         # Date range for monthly stats
         end_date = datetime.now()
         start_date = end_date - timedelta(days=days)
@@ -271,17 +263,12 @@ async def get_monthly_transaction_stats(
         date_to = end_date.isoformat()
 
         # Get monthly aggregated stats from database
-        monthly_stats = await database_service.get_monthly_transaction_stats_from_db(
-            account_id=account_id,
-            date_from=date_from,
-            date_to=date_to,
+        db_path = path_manager.get_database_path()
+        monthly_stats = analytics_proc.calculate_monthly_stats(
+            db_path, account_id=account_id, date_from=date_from, date_to=date_to
         )
 
-        return APIResponse(
-            success=True,
-            data=monthly_stats,
-            message=f"Retrieved monthly stats for last {days} days",
-        )
+        return monthly_stats
 
     except Exception as e:
         logger.error(f"Failed to get monthly transaction stats: {e}")

leggen/commands/generate_sample_db.py

@@ -1,10 +1,489 @@
 """Generate sample database command."""
 
+import json
+import random
+import sqlite3
+from datetime import datetime, timedelta
 from pathlib import Path
+from typing import Any, TypedDict
 
 import click
 
 
+class TransactionType(TypedDict):
+    """Type definition for transaction type configuration."""
+
+    description: str
+    amount_range: tuple[float, float]
+    frequency: float
+
+
+class SampleDataGenerator:
+    """Generates realistic sample data for testing Leggen."""
+
+    def __init__(self, db_path: Path):
+        self.db_path = db_path
+        self.institutions = [
+            {
+                "id": "REVOLUT_REVOLT21",
+                "name": "Revolut",
+                "bic": "REVOLT21",
+                "country": "LT",
+            },
+            {
+                "id": "BANCOBPI_BBPIPTPL",
+                "name": "Banco BPI",
+                "bic": "BBPIPTPL",
+                "country": "PT",
+            },
+            {
+                "id": "MONZO_MONZGB2L",
+                "name": "Monzo Bank",
+                "bic": "MONZGB2L",
+                "country": "GB",
+            },
+            {
+                "id": "NUBANK_NUPBBR25",
+                "name": "Nu Pagamentos",
+                "bic": "NUPBBR25",
+                "country": "BR",
+            },
+        ]
+
+        self.transaction_types: list[TransactionType] = [
+            {
+                "description": "Grocery Store",
+                "amount_range": (-150, -20),
+                "frequency": 0.3,
+            },
+            {"description": "Coffee Shop", "amount_range": (-15, -3), "frequency": 0.2},
+            {
+                "description": "Gas Station",
+                "amount_range": (-80, -30),
+                "frequency": 0.1,
+            },
+            {
+                "description": "Online Shopping",
+                "amount_range": (-200, -25),
+                "frequency": 0.15,
+            },
+            {
+                "description": "Restaurant",
+                "amount_range": (-60, -15),
+                "frequency": 0.15,
+            },
+            {"description": "Salary", "amount_range": (2500, 5000), "frequency": 0.02},
+            {
+                "description": "ATM Withdrawal",
+                "amount_range": (-200, -20),
+                "frequency": 0.05,
+            },
+            {
+                "description": "Transfer to Savings",
+                "amount_range": (-1000, -100),
+                "frequency": 0.03,
+            },
+        ]
+
+    def ensure_database_dir(self):
+        """Ensure database directory exists."""
+        self.db_path.parent.mkdir(parents=True, exist_ok=True)
+
+    def create_tables(self):
+        """Create database tables."""
+        conn = sqlite3.connect(str(self.db_path))
+        cursor = conn.cursor()
+
+        # Create accounts table
+        cursor.execute("""
+            CREATE TABLE IF NOT EXISTS accounts (
+                id TEXT PRIMARY KEY,
+                institution_id TEXT,
+                status TEXT,
+                iban TEXT,
+                name TEXT,
+                currency TEXT,
+                created DATETIME,
+                last_accessed DATETIME,
+                last_updated DATETIME,
+                display_name TEXT
+            )
+        """)
+
+        # Create transactions table with composite primary key
+        cursor.execute("""
+            CREATE TABLE IF NOT EXISTS transactions (
+                accountId TEXT NOT NULL,
+                transactionId TEXT NOT NULL,
+                internalTransactionId TEXT,
+                institutionId TEXT,
+                iban TEXT,
+                transactionDate DATETIME,
+                description TEXT,
+                transactionValue REAL,
+                transactionCurrency TEXT,
+                transactionStatus TEXT,
+                rawTransaction JSON,
+                PRIMARY KEY (accountId, transactionId)
+            )
+        """)
+
+        # Create balances table
+        cursor.execute("""
+            CREATE TABLE IF NOT EXISTS balances (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                account_id TEXT,
+                bank TEXT,
+                status TEXT,
+                iban TEXT,
+                amount REAL,
+                currency TEXT,
+                type TEXT,
+                timestamp DATETIME
+            )
+        """)
+
+        # Create indexes
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_transactions_internal_id ON transactions(internalTransactionId)"
+        )
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_transactions_date ON transactions(transactionDate)"
+        )
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_transactions_account_date ON transactions(accountId, transactionDate)"
+        )
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_transactions_amount ON transactions(transactionValue)"
+        )
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_balances_account_id ON balances(account_id)"
+        )
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_balances_timestamp ON balances(timestamp)"
+        )
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_balances_account_type_timestamp ON balances(account_id, type, timestamp)"
+        )
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_accounts_institution_id ON accounts(institution_id)"
+        )
+        cursor.execute(
+            "CREATE INDEX IF NOT EXISTS idx_accounts_status ON accounts(status)"
+        )
+
+        conn.commit()
+        conn.close()
+
+    def generate_iban(self, country_code: str) -> str:
+        """Generate a realistic IBAN for the given country."""
+        ibans = {
+            "LT": lambda: f"LT{random.randint(10, 99)}{random.randint(10000, 99999)}{random.randint(10000000, 99999999)}",
+            "PT": lambda: f"PT{random.randint(10, 99)}{random.randint(1000, 9999)}{random.randint(1000, 9999)}{random.randint(10000000000, 99999999999)}",
+            "GB": lambda: f"GB{random.randint(10, 99)}MONZ{random.randint(100000, 999999)}{random.randint(100000, 999999)}",
+            "BR": lambda: f"BR{random.randint(10, 99)}{random.randint(10000000, 99999999)}{random.randint(1000, 9999)}{random.randint(10000000, 99999999)}",
+        }
+        return ibans.get(
+            country_code,
+            lambda: f"{country_code}{random.randint(1000000000000000, 9999999999999999)}",
+        )()
+
+    def generate_accounts(self, num_accounts: int = 3) -> list[dict[str, Any]]:
+        """Generate sample accounts."""
+        accounts = []
+        base_date = datetime.now() - timedelta(days=90)
+
+        for i in range(num_accounts):
+            institution = random.choice(self.institutions)
+            account_id = f"account-{i + 1:03d}-{random.randint(1000, 9999)}"
+
+            account = {
+                "id": account_id,
+                "institution_id": institution["id"],
+                "status": "READY",
+                "iban": self.generate_iban(institution["country"]),
+                "name": f"Personal Account {i + 1}",
+                "currency": "EUR",
+                "created": (
+                    base_date + timedelta(days=random.randint(0, 30))
+                ).isoformat(),
+                "last_accessed": (
+                    datetime.now() - timedelta(hours=random.randint(1, 48))
+                ).isoformat(),
+                "last_updated": datetime.now().isoformat(),
+            }
+            accounts.append(account)
+
+        return accounts
+
+    def generate_transactions(
+        self, accounts: list[dict[str, Any]], num_transactions_per_account: int = 50
+    ) -> list[dict[str, Any]]:
+        """Generate sample transactions for accounts."""
+        transactions = []
+        base_date = datetime.now() - timedelta(days=60)
+
+        for account in accounts:
+            account_transactions = []
+            current_balance = random.uniform(500, 3000)
+
+            for i in range(num_transactions_per_account):
+                # Choose transaction type based on frequency weights
+                transaction_type = random.choices(
+                    self.transaction_types,
+                    weights=[t["frequency"] for t in self.transaction_types],
+                )[0]
+
+                # Generate transaction amount
+                min_amount: float
+                max_amount: float
+                min_amount, max_amount = transaction_type["amount_range"]
+                amount = round(random.uniform(min_amount, max_amount), 2)
+
+                # Generate transaction date (more recent transactions are more likely)
+                days_ago = random.choices(
+                    range(60), weights=[1.5 ** (60 - d) for d in range(60)]
+                )[0]
+                transaction_date = base_date + timedelta(
+                    days=days_ago,
+                    hours=random.randint(6, 22),
+                    minutes=random.randint(0, 59),
+                )
+
+                # Generate transaction IDs
+                transaction_id = f"bank-txn-{account['id']}-{i + 1:04d}"
+                internal_transaction_id = f"int-txn-{random.randint(100000, 999999)}"
+
+                # Create realistic descriptions
+                descriptions: dict[str, list[str]] = {
+                    "Grocery Store": [
+                        "TESCO",
+                        "SAINSBURY'S",
+                        "LIDL",
+                        "ALDI",
+                        "WALMART",
+                        "CARREFOUR",
+                    ],
+                    "Coffee Shop": [
+                        "STARBUCKS",
+                        "COSTA COFFEE",
+                        "PRET A MANGER",
+                        "LOCAL CAFE",
+                    ],
+                    "Gas Station": ["BP", "SHELL", "ESSO", "GALP", "PETROBRAS"],
+                    "Online Shopping": ["AMAZON", "EBAY", "ZALANDO", "ASOS", "APPLE"],
+                    "Restaurant": [
+                        "PIZZA HUT",
+                        "MCDONALD'S",
+                        "BURGER KING",
+                        "LOCAL RESTAURANT",
+                    ],
+                    "Salary": ["MONTHLY SALARY", "PAYROLL DEPOSIT", "SALARY PAYMENT"],
+                    "ATM Withdrawal": ["ATM WITHDRAWAL", "CASH WITHDRAWAL"],
+                    "Transfer to Savings": ["SAVINGS TRANSFER", "INVESTMENT TRANSFER"],
+                }
+
+                specific_descriptions: list[str] = descriptions.get(
+                    transaction_type["description"], [transaction_type["description"]]
+                )
+                description = random.choice(specific_descriptions)
+
+                # Create raw transaction (simplified GoCardless format)
+                raw_transaction = {
+                    "transactionId": transaction_id,
+                    "bookingDate": transaction_date.strftime("%Y-%m-%d"),
+                    "valueDate": transaction_date.strftime("%Y-%m-%d"),
+                    "transactionAmount": {
+                        "amount": str(amount),
+                        "currency": account["currency"],
+                    },
+                    "remittanceInformationUnstructured": description,
+                    "bankTransactionCode": "PMNT" if amount < 0 else "RCDT",
+                }
+
+                # Determine status (most are booked, some recent ones might be pending)
+                status = (
+                    "pending" if days_ago < 2 and random.random() < 0.1 else "booked"
+                )
+
+                transaction = {
+                    "accountId": account["id"],
+                    "transactionId": transaction_id,
+                    "internalTransactionId": internal_transaction_id,
+                    "institutionId": account["institution_id"],
+                    "iban": account["iban"],
+                    "transactionDate": transaction_date.isoformat(),
+                    "description": description,
+                    "transactionValue": amount,
+                    "transactionCurrency": account["currency"],
+                    "transactionStatus": status,
+                    "rawTransaction": raw_transaction,
+                }
+
+                account_transactions.append(transaction)
+                current_balance += amount
+
+            # Sort transactions by date for realistic ordering
+            account_transactions.sort(key=lambda x: x["transactionDate"])
+            transactions.extend(account_transactions)
+
+        return transactions
+
+    def generate_balances(self, accounts: list[dict[str, Any]]) -> list[dict[str, Any]]:
+        """Generate sample balances for accounts."""
+        balances = []
+
+        for account in accounts:
+            # Calculate balance from transactions (simplified)
+            base_balance = random.uniform(500, 2000)
+
+            balance_types = ["interimAvailable", "closingBooked", "authorised"]
+
+            for balance_type in balance_types:
+                # Add some variation to balance types
+                variation = (
+                    random.uniform(-50, 50) if balance_type != "interimAvailable" else 0
+                )
+                balance_amount = base_balance + variation
+
+                balance = {
+                    "account_id": account["id"],
+                    "bank": account["institution_id"],
+                    "status": account["status"],
+                    "iban": account["iban"],
+                    "amount": round(balance_amount, 2),
+                    "currency": account["currency"],
+                    "type": balance_type,
+                    "timestamp": datetime.now().isoformat(),
+                }
+                balances.append(balance)
+
+        return balances
+
+    def insert_data(
+        self,
+        accounts: list[dict[str, Any]],
+        transactions: list[dict[str, Any]],
+        balances: list[dict[str, Any]],
+    ):
+        """Insert generated data into the database."""
+        conn = sqlite3.connect(str(self.db_path))
+        cursor = conn.cursor()
+
+        # Insert accounts
+        for account in accounts:
+            cursor.execute(
+                """
+                INSERT OR REPLACE INTO accounts
+                (id, institution_id, status, iban, name, currency, created, last_accessed, last_updated, display_name)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+            """,
+                (
+                    account["id"],
+                    account["institution_id"],
+                    account["status"],
+                    account["iban"],
+                    account["name"],
+                    account["currency"],
+                    account["created"],
+                    account["last_accessed"],
+                    account["last_updated"],
+                    None,  # display_name is initially None for sample data
+                ),
+            )
+
+        # Insert transactions
+        for transaction in transactions:
+            cursor.execute(
+                """
+                INSERT OR REPLACE INTO transactions
+                (accountId, transactionId, internalTransactionId, institutionId, iban,
+                 transactionDate, description, transactionValue, transactionCurrency,
+                 transactionStatus, rawTransaction)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+            """,
+                (
+                    transaction["accountId"],
+                    transaction["transactionId"],
+                    transaction["internalTransactionId"],
+                    transaction["institutionId"],
+                    transaction["iban"],
+                    transaction["transactionDate"],
+                    transaction["description"],
+                    transaction["transactionValue"],
+                    transaction["transactionCurrency"],
+                    transaction["transactionStatus"],
+                    json.dumps(transaction["rawTransaction"]),
+                ),
+            )
+
+        # Insert balances
+        for balance in balances:
+            cursor.execute(
+                """
+                INSERT INTO balances
+                (account_id, bank, status, iban, amount, currency, type, timestamp)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+            """,
+                (
+                    balance["account_id"],
+                    balance["bank"],
+                    balance["status"],
+                    balance["iban"],
+                    balance["amount"],
+                    balance["currency"],
+                    balance["type"],
+                    balance["timestamp"],
+                ),
+            )
+
+        conn.commit()
+        conn.close()
+
+    def generate_sample_database(
+        self, num_accounts: int = 3, num_transactions_per_account: int = 50
+    ):
+        """Generate complete sample database."""
+        click.echo(f"🗄️  Creating sample database at: {self.db_path}")
+
+        self.ensure_database_dir()
+        self.create_tables()
+
+        click.echo(f"👥 Generating {num_accounts} sample accounts...")
+        accounts = self.generate_accounts(num_accounts)
+
+        click.echo(
+            f"💳 Generating {num_transactions_per_account} transactions per account..."
+        )
+        transactions = self.generate_transactions(
+            accounts, num_transactions_per_account
+        )
+
+        click.echo("💰 Generating account balances...")
+        balances = self.generate_balances(accounts)
+
+        click.echo("💾 Inserting data into database...")
+        self.insert_data(accounts, transactions, balances)
+
+        # Print summary
+        click.echo("\n✅ Sample database created successfully!")
+        click.echo("📊 Summary:")
+        click.echo(f"   - Accounts: {len(accounts)}")
+        click.echo(f"   - Transactions: {len(transactions)}")
+        click.echo(f"   - Balances: {len(balances)}")
+        click.echo(f"   - Database: {self.db_path}")
+
+        # Show account details
+        click.echo("\n📋 Sample accounts:")
+        for account in accounts:
+            institution_name = next(
+                inst["name"]
+                for inst in self.institutions
+                if inst["id"] == account["institution_id"]
+            )
+            click.echo(f"   - {account['id']} ({institution_name}) - {account['iban']}")
+
+
 @click.command()
 @click.option(
     "--database",
@@ -30,39 +509,45 @@ import click
 )
 @click.pass_context
 def generate_sample_db(
-    ctx: click.Context, database: Path, accounts: int, transactions: int, force: bool
+    ctx: click.Context,
+    database: Path | None,
+    accounts: int,
+    transactions: int,
+    force: bool,
 ):
     """Generate a sample database with realistic financial data for testing."""
+    import os
 
-    # Import here to avoid circular imports
-    import subprocess
-    import sys
-    from pathlib import Path as PathlibPath
-
-    # Get the script path
-    script_path = (
-        PathlibPath(__file__).parent.parent.parent / "scripts" / "generate_sample_db.py"
-    )
-
-    # Build command arguments
-    cmd = [sys.executable, str(script_path)]
+    from leggen.utils.paths import path_manager
 
+    # Determine database path
     if database:
-        cmd.extend(["--database", str(database)])
+        db_path = database
+    else:
+        # Use development database by default to avoid overwriting production data
+        env_path = os.environ.get("LEGGEN_DATABASE_PATH")
+        if env_path:
+            db_path = Path(env_path)
+        else:
+            # Default to development database in config directory
+            db_path = path_manager.get_config_dir() / "leggen-dev.db"
 
-    cmd.extend(["--accounts", str(accounts)])
-    cmd.extend(["--transactions", str(transactions)])
+    # Check if database exists and ask for confirmation
+    if db_path.exists() and not force:
+        click.echo(f"⚠️  Database already exists: {db_path}")
+        if not click.confirm("Do you want to overwrite it?"):
+            click.echo("Aborted.")
+            ctx.exit(0)
 
-    if force:
-        cmd.append("--force")
+    # Generate the sample database
+    generator = SampleDataGenerator(db_path)
+    generator.generate_sample_database(accounts, transactions)
 
-    # Execute the script
-    try:
-        subprocess.run(cmd, check=True)
-    except subprocess.CalledProcessError as e:
-        click.echo(f"Error generating sample database: {e}")
-        ctx.exit(1)
-
-
-# Export the command
-generate_sample_db = generate_sample_db
+    # Show usage instructions
+    click.echo("\n🚀 Usage instructions:")
+    click.echo("To use this sample database with leggen commands:")
+    click.echo(f"   export LEGGEN_DATABASE_PATH={db_path}")
+    click.echo("   leggen transactions")
+    click.echo("")
+    click.echo("To use this sample database with leggen server:")
+    click.echo(f"   leggen server --database {db_path}")

leggen/commands/server.py

@@ -7,7 +7,7 @@ from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from loguru import logger
 
-from leggen.api.routes import accounts, banks, notifications, sync, transactions
+from leggen.api.routes import accounts, backup, banks, notifications, sync, transactions
 from leggen.background.scheduler import scheduler
 from leggen.utils.config import config
 from leggen.utils.paths import path_manager
@@ -28,10 +28,10 @@ async def lifespan(app: FastAPI):
 
     # Run database migrations
     try:
-        from leggen.services.database_service import DatabaseService
+        from leggen.api.dependencies import get_migration_repository
 
-        db_service = DatabaseService()
-        await db_service.run_migrations_if_needed()
+        migrations = get_migration_repository()
+        await migrations.run_all_migrations()
         logger.info("Database migrations completed")
     except Exception as e:
         logger.error(f"Database migration failed: {e}")
@@ -60,6 +60,8 @@ def create_app() -> FastAPI:
         description="Open Banking API for Leggen",
         version=version,
         lifespan=lifespan,
+        docs_url="/api/v1/docs",
+        openapi_url="/api/v1/openapi.json",
     )
 
     # Add CORS middleware
@@ -81,13 +83,12 @@ def create_app() -> FastAPI:
     app.include_router(transactions.router, prefix="/api/v1", tags=["transactions"])
     app.include_router(sync.router, prefix="/api/v1", tags=["sync"])
     app.include_router(notifications.router, prefix="/api/v1", tags=["notifications"])
+    app.include_router(backup.router, prefix="/api/v1", tags=["backup"])
 
     @app.get("/api/v1/health")
     async def health():
         """Health check endpoint for API connectivity"""
         try:
-            from leggen.api.models.common import APIResponse
-
             config_loaded = config._config is not None
 
             # Get version dynamically
@@ -96,25 +97,17 @@ def create_app() -> FastAPI:
             except metadata.PackageNotFoundError:
                 version = "dev"
 
-            return APIResponse(
-                success=True,
-                data={
-                    "status": "healthy",
-                    "config_loaded": config_loaded,
-                    "version": version,
-                    "message": "API is running and responsive",
-                },
-                message="Health check successful",
-            )
+            return {
+                "status": "healthy",
+                "config_loaded": config_loaded,
+                "version": version,
+            }
         except Exception as e:
             logger.error(f"Health check failed: {e}")
-            from leggen.api.models.common import APIResponse
-
-            return APIResponse(
-                success=False,
-                data={"status": "unhealthy", "error": str(e)},
-                message="Health check failed",
-            )
+            return {
+                "status": "unhealthy",
+                "error": str(e),
+            }
 
     return app
 

leggen/models/config.py

@@ -32,6 +32,22 @@ class NotificationConfig(BaseModel):
     telegram: Optional[TelegramNotificationConfig] = None
 
 
+class S3BackupConfig(BaseModel):
+    access_key_id: str = Field(..., description="AWS S3 access key ID")
+    secret_access_key: str = Field(..., description="AWS S3 secret access key")
+    bucket_name: str = Field(..., description="S3 bucket name")
+    region: str = Field(default="us-east-1", description="AWS S3 region")
+    endpoint_url: Optional[str] = Field(
+        default=None, description="Custom S3 endpoint URL"
+    )
+    path_style: bool = Field(default=False, description="Use path-style addressing")
+    enabled: bool = Field(default=True, description="Enable S3 backups")
+
+
+class BackupConfig(BaseModel):
+    s3: Optional[S3BackupConfig] = None
+
+
 class FilterConfig(BaseModel):
     case_insensitive: Optional[List[str]] = Field(default_factory=list)
     case_sensitive: Optional[List[str]] = Field(default_factory=list)
@@ -56,3 +72,4 @@ class Config(BaseModel):
     notifications: Optional[NotificationConfig] = None
     filters: Optional[FilterConfig] = None
     scheduler: SchedulerConfig = Field(default_factory=SchedulerConfig)
+    backup: Optional[BackupConfig] = None

leggen/notifications/discord.py

@@ -61,17 +61,13 @@ def send_sync_failure_notification(ctx: click.Context, notification: dict):
     info("Sending sync failure notification to Discord")
     webhook = DiscordWebhook(url=ctx.obj["notifications"]["discord"]["webhook"])
 
-    # Determine color and title based on failure type
-    if notification.get("type") == "sync_final_failure":
-        color = "ff0000"  # Red for final failure
-        title = "🚨 Sync Final Failure"
-        description = (
-            f"Sync failed permanently after {notification['retry_count']} attempts"
-        )
-    else:
-        color = "ffaa00"  # Orange for retry
-        title = "⚠️ Sync Failure"
-        description = f"Sync failed (attempt {notification['retry_count']}/{notification['max_retries']}). Will retry automatically..."
+    color = "ffaa00"  # Orange for sync failure
+    title = "⚠️ Sync Failure"
+
+    # Build description with account info if available
+    description = "Account sync failed"
+    if notification.get("account_id"):
+        description = f"Account {notification['account_id']} sync failed"
 
     embed = DiscordEmbed(
         title=title,

leggen/notifications/telegram.py

@@ -87,19 +87,14 @@ def send_sync_failure_notification(ctx: click.Context, notification: dict):
     bot_url = f"https://api.telegram.org/bot{token}/sendMessage"
     info("Sending sync failure notification to Telegram")
 
-    message = "*🚨 [Leggen](https://github.com/elisiariocouto/leggen)*\n"
+    message = "*⚠️ [Leggen](https://github.com/elisiariocouto/leggen)*\n"
     message += "*Sync Failed*\n\n"
-    message += escape_markdown(f"Error: {notification['error']}\n")
 
-    if notification.get("type") == "sync_final_failure":
-        message += escape_markdown(
-            f"❌ Final failure after {notification['retry_count']} attempts\n"
-        )
-    else:
-        message += escape_markdown(
-            f"🔄 Attempt {notification['retry_count']}/{notification['max_retries']}\n"
-        )
-        message += escape_markdown("Will retry automatically...\n")
+    # Add account info if available
+    if notification.get("account_id"):
+        message += escape_markdown(f"Account: {notification['account_id']}\n")
+
+    message += escape_markdown(f"Error: {notification['error']}\n")
 
     res = requests.post(
         bot_url,

leggen/repositories/__init__.py

@@ -0,0 +1,13 @@
+from leggen.repositories.account_repository import AccountRepository
+from leggen.repositories.balance_repository import BalanceRepository
+from leggen.repositories.migration_repository import MigrationRepository
+from leggen.repositories.sync_repository import SyncRepository
+from leggen.repositories.transaction_repository import TransactionRepository
+
+__all__ = [
+    "AccountRepository",
+    "BalanceRepository",
+    "MigrationRepository",
+    "SyncRepository",
+    "TransactionRepository",
+]

leggen/repositories/account_repository.py

@@ -0,0 +1,128 @@
+from typing import Any, Dict, List, Optional
+
+from leggen.repositories.base_repository import BaseRepository
+
+
+class AccountRepository(BaseRepository):
+    """Repository for account data operations"""
+
+    def create_table(self):
+        """Create accounts table with indexes"""
+        with self._get_db_connection() as conn:
+            cursor = conn.cursor()
+
+            cursor.execute(
+                """CREATE TABLE IF NOT EXISTS accounts (
+                id TEXT PRIMARY KEY,
+                institution_id TEXT,
+                status TEXT,
+                iban TEXT,
+                name TEXT,
+                currency TEXT,
+                created DATETIME,
+                last_accessed DATETIME,
+                last_updated DATETIME,
+                display_name TEXT,
+                logo TEXT
+            )"""
+            )
+
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_accounts_institution_id
+                   ON accounts(institution_id)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_accounts_status
+                   ON accounts(status)"""
+            )
+
+            conn.commit()
+
+    def persist(self, account_data: Dict[str, Any]) -> Dict[str, Any]:
+        """Persist account details to database"""
+        self.create_table()
+
+        with self._get_db_connection() as conn:
+            cursor = conn.cursor()
+
+            # Check if account exists and preserve display_name
+            cursor.execute(
+                "SELECT display_name FROM accounts WHERE id = ?", (account_data["id"],)
+            )
+            existing_row = cursor.fetchone()
+            existing_display_name = existing_row[0] if existing_row else None
+
+            # Use existing display_name if not provided in account_data
+            display_name = account_data.get("display_name", existing_display_name)
+
+            cursor.execute(
+                """INSERT OR REPLACE INTO accounts (
+                id,
+                institution_id,
+                status,
+                iban,
+                name,
+                currency,
+                created,
+                last_accessed,
+                last_updated,
+                display_name,
+                logo
+            ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)""",
+                (
+                    account_data["id"],
+                    account_data["institution_id"],
+                    account_data["status"],
+                    account_data.get("iban"),
+                    account_data.get("name"),
+                    account_data.get("currency"),
+                    account_data["created"],
+                    account_data.get("last_accessed"),
+                    account_data.get("last_updated", account_data["created"]),
+                    display_name,
+                    account_data.get("logo"),
+                ),
+            )
+            conn.commit()
+
+        return account_data
+
+    def get_accounts(
+        self, account_ids: Optional[List[str]] = None
+    ) -> List[Dict[str, Any]]:
+        """Get account details from database"""
+        if not self._db_exists():
+            return []
+
+        with self._get_db_connection(row_factory=True) as conn:
+            cursor = conn.cursor()
+
+            query = "SELECT * FROM accounts"
+            params = []
+
+            if account_ids:
+                placeholders = ",".join("?" * len(account_ids))
+                query += f" WHERE id IN ({placeholders})"
+                params.extend(account_ids)
+
+            query += " ORDER BY created DESC"
+
+            cursor.execute(query, params)
+            rows = cursor.fetchall()
+
+            return [dict(row) for row in rows]
+
+    def get_account(self, account_id: str) -> Optional[Dict[str, Any]]:
+        """Get specific account details from database"""
+        if not self._db_exists():
+            return None
+
+        with self._get_db_connection(row_factory=True) as conn:
+            cursor = conn.cursor()
+
+            cursor.execute("SELECT * FROM accounts WHERE id = ?", (account_id,))
+            row = cursor.fetchone()
+
+            if row:
+                return dict(row)
+            return None

leggen/repositories/balance_repository.py

@@ -0,0 +1,107 @@
+import sqlite3
+from typing import Any, Dict, List, Optional
+
+from loguru import logger
+
+from leggen.repositories.base_repository import BaseRepository
+
+
+class BalanceRepository(BaseRepository):
+    """Repository for balance data operations"""
+
+    def create_table(self):
+        """Create balances table with indexes"""
+        with self._get_db_connection() as conn:
+            cursor = conn.cursor()
+
+            cursor.execute(
+                """CREATE TABLE IF NOT EXISTS balances (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                account_id TEXT,
+                bank TEXT,
+                status TEXT,
+                iban TEXT,
+                amount REAL,
+                currency TEXT,
+                type TEXT,
+                timestamp DATETIME
+            )"""
+            )
+
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_balances_account_id
+                   ON balances(account_id)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_balances_timestamp
+                   ON balances(timestamp)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_balances_account_type_timestamp
+                   ON balances(account_id, type, timestamp)"""
+            )
+
+            conn.commit()
+
+    def persist(self, account_id: str, balance_rows: List[tuple]) -> None:
+        """Persist balance rows to database"""
+        try:
+            self.create_table()
+
+            with self._get_db_connection() as conn:
+                cursor = conn.cursor()
+
+                for row in balance_rows:
+                    try:
+                        cursor.execute(
+                            """INSERT INTO balances (
+                            account_id,
+                            bank,
+                            status,
+                            iban,
+                            amount,
+                            currency,
+                            type,
+                            timestamp
+                        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)""",
+                            row,
+                        )
+                    except sqlite3.IntegrityError:
+                        logger.warning(f"Skipped duplicate balance for {account_id}")
+
+                conn.commit()
+
+            logger.info(f"Persisted balances for account {account_id}")
+        except Exception as e:
+            logger.error(f"Failed to persist balances: {e}")
+            raise
+
+    def get_balances(self, account_id: Optional[str] = None) -> List[Dict[str, Any]]:
+        """Get latest balances from database"""
+        if not self._db_exists():
+            return []
+
+        with self._get_db_connection(row_factory=True) as conn:
+            cursor = conn.cursor()
+
+            # Get latest balance for each account_id and type combination
+            query = """
+                SELECT * FROM balances b1
+                WHERE b1.timestamp = (
+                    SELECT MAX(b2.timestamp)
+                    FROM balances b2
+                    WHERE b2.account_id = b1.account_id AND b2.type = b1.type
+                )
+            """
+            params = []
+
+            if account_id:
+                query += " AND b1.account_id = ?"
+                params.append(account_id)
+
+            query += " ORDER BY b1.account_id, b1.type"
+
+            cursor.execute(query, params)
+            rows = cursor.fetchall()
+
+            return [dict(row) for row in rows]

leggen/repositories/base_repository.py

@@ -0,0 +1,28 @@
+import sqlite3
+from contextlib import contextmanager
+
+from leggen.utils.paths import path_manager
+
+
+class BaseRepository:
+    """Base repository with shared database connection logic"""
+
+    @contextmanager
+    def _get_db_connection(self, row_factory: bool = False):
+        """Context manager for database connections with proper cleanup"""
+        db_path = path_manager.get_database_path()
+        conn = sqlite3.connect(str(db_path))
+        if row_factory:
+            conn.row_factory = sqlite3.Row
+        try:
+            yield conn
+        except Exception as e:
+            conn.rollback()
+            raise e
+        finally:
+            conn.close()
+
+    def _db_exists(self) -> bool:
+        """Check if database file exists"""
+        db_path = path_manager.get_database_path()
+        return db_path.exists()

leggen/repositories/migration_repository.py

@@ -0,0 +1,626 @@
+import sqlite3
+import uuid
+from datetime import datetime
+
+from loguru import logger
+
+from leggen.repositories.base_repository import BaseRepository
+from leggen.utils.paths import path_manager
+
+
+class MigrationRepository(BaseRepository):
+    """Repository for database migrations"""
+
+    async def run_all_migrations(self):
+        """Run all necessary database migrations"""
+        await self.migrate_balance_timestamps_if_needed()
+        await self.migrate_null_transaction_ids_if_needed()
+        await self.migrate_to_composite_key_if_needed()
+        await self.migrate_add_display_name_if_needed()
+        await self.migrate_add_sync_operations_if_needed()
+        await self.migrate_add_logo_if_needed()
+
+    # Balance timestamp migration methods
+    async def migrate_balance_timestamps_if_needed(self):
+        """Check and migrate balance timestamps if needed"""
+        try:
+            if await self._check_balance_timestamp_migration_needed():
+                logger.info("Balance timestamp migration needed, starting...")
+                await self._migrate_balance_timestamps()
+                logger.info("Balance timestamp migration completed")
+            else:
+                logger.info("Balance timestamps are already consistent")
+        except Exception as e:
+            logger.error(f"Balance timestamp migration failed: {e}")
+            raise
+
+    async def _check_balance_timestamp_migration_needed(self) -> bool:
+        """Check if balance timestamps need migration"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            return False
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute("""
+                SELECT typeof(timestamp) as type, COUNT(*) as count
+                FROM balances
+                GROUP BY typeof(timestamp)
+            """)
+
+            types = cursor.fetchall()
+            conn.close()
+
+            type_names = [row[0] for row in types]
+            return "real" in type_names and "text" in type_names
+
+        except Exception as e:
+            logger.error(f"Failed to check migration status: {e}")
+            return False
+
+    async def _migrate_balance_timestamps(self):
+        """Convert all Unix timestamps to datetime strings"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            logger.warning("Database file not found, skipping migration")
+            return
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute("""
+                SELECT id, timestamp
+                FROM balances
+                WHERE typeof(timestamp) = 'real'
+                ORDER BY id
+            """)
+
+            unix_records = cursor.fetchall()
+            total_records = len(unix_records)
+
+            if total_records == 0:
+                logger.info("No Unix timestamps found to migrate")
+                conn.close()
+                return
+
+            logger.info(
+                f"Migrating {total_records} balance records from Unix to datetime format"
+            )
+
+            batch_size = 100
+            migrated_count = 0
+
+            for i in range(0, total_records, batch_size):
+                batch = unix_records[i : i + batch_size]
+
+                for record_id, unix_timestamp in batch:
+                    try:
+                        dt_string = self._unix_to_datetime_string(float(unix_timestamp))
+
+                        cursor.execute(
+                            """
+                            UPDATE balances
+                            SET timestamp = ?
+                            WHERE id = ?
+                        """,
+                            (dt_string, record_id),
+                        )
+
+                        migrated_count += 1
+
+                        if migrated_count % 100 == 0:
+                            logger.info(
+                                f"Migrated {migrated_count}/{total_records} balance records"
+                            )
+
+                    except Exception as e:
+                        logger.error(f"Failed to migrate record {record_id}: {e}")
+                        continue
+
+                conn.commit()
+
+            conn.close()
+            logger.info(f"Successfully migrated {migrated_count} balance records")
+
+        except Exception as e:
+            logger.error(f"Balance timestamp migration failed: {e}")
+            raise
+
+    def _unix_to_datetime_string(self, unix_timestamp: float) -> str:
+        """Convert Unix timestamp to datetime string"""
+        dt = datetime.fromtimestamp(unix_timestamp)
+        return dt.isoformat()
+
+    # Null transaction IDs migration methods
+    async def migrate_null_transaction_ids_if_needed(self):
+        """Check and migrate null transaction IDs if needed"""
+        try:
+            if await self._check_null_transaction_ids_migration_needed():
+                logger.info("Null transaction IDs migration needed, starting...")
+                await self._migrate_null_transaction_ids()
+                logger.info("Null transaction IDs migration completed")
+            else:
+                logger.info("No null transaction IDs found to migrate")
+        except Exception as e:
+            logger.error(f"Null transaction IDs migration failed: {e}")
+            raise
+
+    async def _check_null_transaction_ids_migration_needed(self) -> bool:
+        """Check if null transaction IDs need migration"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            return False
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute("""
+                SELECT COUNT(*)
+                FROM transactions
+                WHERE (internalTransactionId IS NULL OR internalTransactionId = '')
+                AND json_extract(rawTransaction, '$.transactionId') IS NOT NULL
+            """)
+
+            count = cursor.fetchone()[0]
+            conn.close()
+
+            return count > 0
+
+        except Exception as e:
+            logger.error(f"Failed to check null transaction IDs migration status: {e}")
+            return False
+
+    async def _migrate_null_transaction_ids(self):
+        """Populate null internalTransactionId fields using transactionId from raw data"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            logger.warning("Database file not found, skipping migration")
+            return
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute("""
+                SELECT rowid, json_extract(rawTransaction, '$.transactionId') as transactionId
+                FROM transactions
+                WHERE (internalTransactionId IS NULL OR internalTransactionId = '')
+                AND json_extract(rawTransaction, '$.transactionId') IS NOT NULL
+                ORDER BY rowid
+            """)
+
+            null_records = cursor.fetchall()
+            total_records = len(null_records)
+
+            if total_records == 0:
+                logger.info("No null transaction IDs found to migrate")
+                conn.close()
+                return
+
+            logger.info(
+                f"Migrating {total_records} transaction records with null internalTransactionId"
+            )
+
+            batch_size = 100
+            migrated_count = 0
+
+            for i in range(0, total_records, batch_size):
+                batch = null_records[i : i + batch_size]
+
+                for rowid, transaction_id in batch:
+                    try:
+                        cursor.execute(
+                            "SELECT COUNT(*) FROM transactions WHERE internalTransactionId = ?",
+                            (str(transaction_id),),
+                        )
+                        existing_count = cursor.fetchone()[0]
+
+                        if existing_count > 0:
+                            unique_id = f"{str(transaction_id)}_{uuid.uuid4().hex[:8]}"
+                            logger.debug(
+                                f"Generated unique ID for duplicate transactionId: {unique_id}"
+                            )
+                        else:
+                            unique_id = str(transaction_id)
+
+                        cursor.execute(
+                            """
+                            UPDATE transactions
+                            SET internalTransactionId = ?
+                            WHERE rowid = ?
+                            """,
+                            (unique_id, rowid),
+                        )
+
+                        migrated_count += 1
+
+                        if migrated_count % 100 == 0:
+                            logger.info(
+                                f"Migrated {migrated_count}/{total_records} transaction records"
+                            )
+
+                    except Exception as e:
+                        logger.error(f"Failed to migrate record {rowid}: {e}")
+                        continue
+
+                conn.commit()
+
+            conn.close()
+            logger.info(f"Successfully migrated {migrated_count} transaction records")
+
+        except Exception as e:
+            logger.error(f"Null transaction IDs migration failed: {e}")
+            raise
+
+    # Composite key migration methods
+    async def migrate_to_composite_key_if_needed(self):
+        """Check and migrate to composite primary key if needed"""
+        try:
+            if await self._check_composite_key_migration_needed():
+                logger.info("Composite key migration needed, starting...")
+                await self._migrate_to_composite_key()
+                logger.info("Composite key migration completed")
+            else:
+                logger.info("Composite key migration not needed")
+        except Exception as e:
+            logger.error(f"Composite key migration failed: {e}")
+            raise
+
+    async def _check_composite_key_migration_needed(self) -> bool:
+        """Check if composite key migration is needed"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            return False
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute(
+                "SELECT name FROM sqlite_master WHERE type='table' AND name='transactions'"
+            )
+            if not cursor.fetchone():
+                conn.close()
+                return False
+
+            cursor.execute("PRAGMA table_info(transactions)")
+            columns = cursor.fetchall()
+
+            internal_transaction_id_is_pk = any(
+                col[1] == "internalTransactionId" and col[5] == 1 for col in columns
+            )
+
+            has_composite_key = any(
+                col[1] in ["accountId", "transactionId"] and col[5] == 1
+                for col in columns
+            )
+
+            conn.close()
+
+            return internal_transaction_id_is_pk or not has_composite_key
+
+        except Exception as e:
+            logger.error(f"Failed to check composite key migration status: {e}")
+            return False
+
+    async def _migrate_to_composite_key(self):
+        """Migrate transactions table to use composite primary key (accountId, transactionId)"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            logger.warning("Database file not found, skipping migration")
+            return
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            logger.info("Starting composite key migration...")
+
+            logger.info("Creating temporary table with composite primary key...")
+            cursor.execute("DROP TABLE IF EXISTS transactions_temp")
+            cursor.execute("""
+                CREATE TABLE transactions_temp (
+                    accountId TEXT NOT NULL,
+                    transactionId TEXT NOT NULL,
+                    internalTransactionId TEXT,
+                    institutionId TEXT,
+                    iban TEXT,
+                    transactionDate DATETIME,
+                    description TEXT,
+                    transactionValue REAL,
+                    transactionCurrency TEXT,
+                    transactionStatus TEXT,
+                    rawTransaction JSON,
+                    PRIMARY KEY (accountId, transactionId)
+                )
+            """)
+
+            logger.info("Inserting deduplicated data...")
+            cursor.execute("""
+                INSERT INTO transactions_temp
+                SELECT
+                    accountId,
+                    json_extract(rawTransaction, '$.transactionId') as transactionId,
+                    internalTransactionId,
+                    institutionId,
+                    iban,
+                    transactionDate,
+                    description,
+                    transactionValue,
+                    transactionCurrency,
+                    transactionStatus,
+                    rawTransaction
+                FROM (
+                    SELECT *,
+                           ROW_NUMBER() OVER (
+                               PARTITION BY accountId, json_extract(rawTransaction, '$.transactionId')
+                               ORDER BY transactionDate DESC
+                           ) as rn
+                    FROM transactions
+                    WHERE json_extract(rawTransaction, '$.transactionId') IS NOT NULL
+                )
+                WHERE rn = 1
+            """)
+
+            rows_migrated = cursor.rowcount
+            logger.info(f"Migrated {rows_migrated} unique transactions")
+
+            logger.info("Replacing old table...")
+            cursor.execute("DROP TABLE transactions")
+            cursor.execute("ALTER TABLE transactions_temp RENAME TO transactions")
+
+            logger.info("Recreating indexes...")
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_transactions_internal_id
+                   ON transactions(internalTransactionId)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_transactions_date
+                   ON transactions(transactionDate)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_transactions_account_date
+                   ON transactions(accountId, transactionDate)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_transactions_amount
+                   ON transactions(transactionValue)"""
+            )
+
+            conn.commit()
+            conn.close()
+
+            logger.info("Composite key migration completed successfully")
+
+        except Exception as e:
+            logger.error(f"Composite key migration failed: {e}")
+            raise
+
+    # Display name migration methods
+    async def migrate_add_display_name_if_needed(self):
+        """Check and add display_name column if needed"""
+        try:
+            if await self._check_display_name_migration_needed():
+                logger.info("Display name column migration needed, starting...")
+                await self._migrate_add_display_name()
+                logger.info("Display name column migration completed")
+            else:
+                logger.info("Display name column already exists")
+        except Exception as e:
+            logger.error(f"Display name column migration failed: {e}")
+            raise
+
+    async def _check_display_name_migration_needed(self) -> bool:
+        """Check if display_name column needs to be added"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            return False
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute(
+                "SELECT name FROM sqlite_master WHERE type='table' AND name='accounts'"
+            )
+            if not cursor.fetchone():
+                conn.close()
+                return False
+
+            cursor.execute("PRAGMA table_info(accounts)")
+            columns = cursor.fetchall()
+
+            has_display_name = any(col[1] == "display_name" for col in columns)
+
+            conn.close()
+            return not has_display_name
+
+        except Exception as e:
+            logger.error(f"Failed to check display_name migration status: {e}")
+            return False
+
+    async def _migrate_add_display_name(self):
+        """Add display_name column to accounts table"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            logger.warning("Database file not found, skipping migration")
+            return
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            logger.info("Adding display_name column to accounts table...")
+
+            cursor.execute("""
+                ALTER TABLE accounts
+                ADD COLUMN display_name TEXT
+            """)
+
+            conn.commit()
+            conn.close()
+
+            logger.info("Display name column migration completed successfully")
+
+        except Exception as e:
+            logger.error(f"Display name column migration failed: {e}")
+            raise
+
+    # Sync operations migration methods
+    async def migrate_add_sync_operations_if_needed(self):
+        """Check and add sync_operations table if needed"""
+        try:
+            if await self._check_sync_operations_migration_needed():
+                logger.info("Sync operations table migration needed, starting...")
+                await self._migrate_add_sync_operations()
+                logger.info("Sync operations table migration completed")
+            else:
+                logger.info("Sync operations table already exists")
+        except Exception as e:
+            logger.error(f"Sync operations table migration failed: {e}")
+            raise
+
+    async def _check_sync_operations_migration_needed(self) -> bool:
+        """Check if sync_operations table needs to be created"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            return False
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute(
+                "SELECT name FROM sqlite_master WHERE type='table' AND name='sync_operations'"
+            )
+            table_exists = cursor.fetchone() is not None
+
+            conn.close()
+            return not table_exists
+
+        except Exception as e:
+            logger.error(f"Failed to check sync_operations migration status: {e}")
+            return False
+
+    async def _migrate_add_sync_operations(self):
+        """Add sync_operations table"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            logger.warning("Database file not found, skipping migration")
+            return
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            logger.info("Creating sync_operations table...")
+
+            cursor.execute("""
+                CREATE TABLE sync_operations (
+                    id INTEGER PRIMARY KEY AUTOINCREMENT,
+                    started_at DATETIME NOT NULL,
+                    completed_at DATETIME,
+                    success BOOLEAN,
+                    accounts_processed INTEGER DEFAULT 0,
+                    transactions_added INTEGER DEFAULT 0,
+                    transactions_updated INTEGER DEFAULT 0,
+                    balances_updated INTEGER DEFAULT 0,
+                    duration_seconds REAL,
+                    errors TEXT,
+                    logs TEXT,
+                    trigger_type TEXT DEFAULT 'manual'
+                )
+            """)
+
+            cursor.execute(
+                "CREATE INDEX IF NOT EXISTS idx_sync_operations_started_at ON sync_operations(started_at)"
+            )
+            cursor.execute(
+                "CREATE INDEX IF NOT EXISTS idx_sync_operations_success ON sync_operations(success)"
+            )
+            cursor.execute(
+                "CREATE INDEX IF NOT EXISTS idx_sync_operations_trigger_type ON sync_operations(trigger_type)"
+            )
+
+            conn.commit()
+            conn.close()
+
+            logger.info("Sync operations table migration completed successfully")
+
+        except Exception as e:
+            logger.error(f"Sync operations table migration failed: {e}")
+            raise
+
+    # Logo migration methods
+    async def migrate_add_logo_if_needed(self):
+        """Check and add logo column to accounts table if needed"""
+        try:
+            if await self._check_logo_migration_needed():
+                logger.info("Logo column migration needed, starting...")
+                await self._migrate_add_logo()
+                logger.info("Logo column migration completed")
+            else:
+                logger.info("Logo column already exists")
+        except Exception as e:
+            logger.error(f"Logo column migration failed: {e}")
+            raise
+
+    async def _check_logo_migration_needed(self) -> bool:
+        """Check if logo column needs to be added to accounts table"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            return False
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute(
+                "SELECT name FROM sqlite_master WHERE type='table' AND name='accounts'"
+            )
+            if not cursor.fetchone():
+                conn.close()
+                return False
+
+            cursor.execute("PRAGMA table_info(accounts)")
+            columns = cursor.fetchall()
+
+            has_logo = any(col[1] == "logo" for col in columns)
+
+            conn.close()
+            return not has_logo
+
+        except Exception as e:
+            logger.error(f"Failed to check logo migration status: {e}")
+            return False
+
+    async def _migrate_add_logo(self):
+        """Add logo column to accounts table"""
+        db_path = path_manager.get_database_path()
+        if not db_path.exists():
+            logger.warning("Database file not found, skipping migration")
+            return
+
+        try:
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            logger.info("Adding logo column to accounts table...")
+
+            cursor.execute("""
+                ALTER TABLE accounts
+                ADD COLUMN logo TEXT
+            """)
+
+            conn.commit()
+            conn.close()
+
+            logger.info("Logo column migration completed successfully")
+
+        except Exception as e:
+            logger.error(f"Logo column migration failed: {e}")
+            raise

leggen/repositories/sync_repository.py

@@ -0,0 +1,132 @@
+import json
+import sqlite3
+from typing import Any, Dict, List
+
+from loguru import logger
+
+from leggen.repositories.base_repository import BaseRepository
+from leggen.utils.paths import path_manager
+
+
+class SyncRepository(BaseRepository):
+    """Repository for sync operation data"""
+
+    def create_table(self):
+        """Create sync_operations table with indexes"""
+        with self._get_db_connection() as conn:
+            cursor = conn.cursor()
+
+            cursor.execute("""
+                CREATE TABLE IF NOT EXISTS sync_operations (
+                    id INTEGER PRIMARY KEY AUTOINCREMENT,
+                    started_at DATETIME NOT NULL,
+                    completed_at DATETIME,
+                    success BOOLEAN,
+                    accounts_processed INTEGER DEFAULT 0,
+                    transactions_added INTEGER DEFAULT 0,
+                    transactions_updated INTEGER DEFAULT 0,
+                    balances_updated INTEGER DEFAULT 0,
+                    duration_seconds REAL,
+                    errors TEXT,
+                    logs TEXT,
+                    trigger_type TEXT DEFAULT 'manual'
+                )
+            """)
+
+            cursor.execute(
+                "CREATE INDEX IF NOT EXISTS idx_sync_operations_started_at ON sync_operations(started_at)"
+            )
+            cursor.execute(
+                "CREATE INDEX IF NOT EXISTS idx_sync_operations_success ON sync_operations(success)"
+            )
+            cursor.execute(
+                "CREATE INDEX IF NOT EXISTS idx_sync_operations_trigger_type ON sync_operations(trigger_type)"
+            )
+
+            conn.commit()
+
+    def persist(self, sync_operation: Dict[str, Any]) -> int:
+        """Persist sync operation to database and return the ID"""
+        try:
+            self.create_table()
+
+            db_path = path_manager.get_database_path()
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute(
+                """INSERT INTO sync_operations (
+                    started_at, completed_at, success, accounts_processed,
+                    transactions_added, transactions_updated, balances_updated,
+                    duration_seconds, errors, logs, trigger_type
+                ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)""",
+                (
+                    sync_operation.get("started_at"),
+                    sync_operation.get("completed_at"),
+                    sync_operation.get("success"),
+                    sync_operation.get("accounts_processed", 0),
+                    sync_operation.get("transactions_added", 0),
+                    sync_operation.get("transactions_updated", 0),
+                    sync_operation.get("balances_updated", 0),
+                    sync_operation.get("duration_seconds"),
+                    json.dumps(sync_operation.get("errors", [])),
+                    json.dumps(sync_operation.get("logs", [])),
+                    sync_operation.get("trigger_type", "manual"),
+                ),
+            )
+
+            operation_id = cursor.lastrowid
+            if operation_id is None:
+                raise ValueError("Failed to get operation ID after insert")
+
+            conn.commit()
+            conn.close()
+
+            logger.debug(f"Persisted sync operation with ID: {operation_id}")
+            return operation_id
+
+        except Exception as e:
+            logger.error(f"Failed to persist sync operation: {e}")
+            raise
+
+    def get_operations(self, limit: int = 50, offset: int = 0) -> List[Dict[str, Any]]:
+        """Get sync operations from database"""
+        try:
+            db_path = path_manager.get_database_path()
+            conn = sqlite3.connect(str(db_path))
+            cursor = conn.cursor()
+
+            cursor.execute(
+                """SELECT id, started_at, completed_at, success, accounts_processed,
+                          transactions_added, transactions_updated, balances_updated,
+                          duration_seconds, errors, logs, trigger_type
+                   FROM sync_operations
+                   ORDER BY started_at DESC
+                   LIMIT ? OFFSET ?""",
+                (limit, offset),
+            )
+
+            operations = []
+            for row in cursor.fetchall():
+                operation = {
+                    "id": row[0],
+                    "started_at": row[1],
+                    "completed_at": row[2],
+                    "success": bool(row[3]) if row[3] is not None else None,
+                    "accounts_processed": row[4],
+                    "transactions_added": row[5],
+                    "transactions_updated": row[6],
+                    "balances_updated": row[7],
+                    "duration_seconds": row[8],
+                    "errors": json.loads(row[9]) if row[9] else [],
+                    "logs": json.loads(row[10]) if row[10] else [],
+                    "trigger_type": row[11],
+                }
+                operations.append(operation)
+
+            conn.close()
+            return operations
+
+        except Exception as e:
+            logger.error(f"Failed to get sync operations: {e}")
+            return []

leggen/repositories/transaction_repository.py

@@ -0,0 +1,264 @@
+import json
+import sqlite3
+from typing import Any, Dict, List, Optional, Union
+
+from loguru import logger
+
+from leggen.repositories.base_repository import BaseRepository
+
+
+class TransactionRepository(BaseRepository):
+    """Repository for transaction data operations"""
+
+    def create_table(self):
+        """Create transactions table with indexes"""
+        with self._get_db_connection() as conn:
+            cursor = conn.cursor()
+
+            cursor.execute(
+                """CREATE TABLE IF NOT EXISTS transactions (
+                accountId TEXT NOT NULL,
+                transactionId TEXT NOT NULL,
+                internalTransactionId TEXT,
+                institutionId TEXT,
+                iban TEXT,
+                transactionDate DATETIME,
+                description TEXT,
+                transactionValue REAL,
+                transactionCurrency TEXT,
+                transactionStatus TEXT,
+                rawTransaction JSON,
+                PRIMARY KEY (accountId, transactionId)
+            )"""
+            )
+
+            # Create indexes for better performance
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_transactions_internal_id
+                   ON transactions(internalTransactionId)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_transactions_date
+                   ON transactions(transactionDate)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_transactions_account_date
+                   ON transactions(accountId, transactionDate)"""
+            )
+            cursor.execute(
+                """CREATE INDEX IF NOT EXISTS idx_transactions_amount
+                   ON transactions(transactionValue)"""
+            )
+
+            conn.commit()
+
+    def persist(
+        self, account_id: str, transactions: List[Dict[str, Any]]
+    ) -> List[Dict[str, Any]]:
+        """Persist transactions to database, return new ones"""
+        try:
+            self.create_table()
+
+            with self._get_db_connection() as conn:
+                cursor = conn.cursor()
+
+                insert_sql = """INSERT OR REPLACE INTO transactions (
+                    accountId,
+                    transactionId,
+                    internalTransactionId,
+                    institutionId,
+                    iban,
+                    transactionDate,
+                    description,
+                    transactionValue,
+                    transactionCurrency,
+                    transactionStatus,
+                    rawTransaction
+                ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)"""
+
+                new_transactions = []
+
+                for transaction in transactions:
+                    try:
+                        # Check if transaction already exists
+                        cursor.execute(
+                            """SELECT COUNT(*) FROM transactions
+                               WHERE accountId = ? AND transactionId = ?""",
+                            (transaction["accountId"], transaction["transactionId"]),
+                        )
+                        exists = cursor.fetchone()[0] > 0
+
+                        cursor.execute(
+                            insert_sql,
+                            (
+                                transaction["accountId"],
+                                transaction["transactionId"],
+                                transaction.get("internalTransactionId"),
+                                transaction["institutionId"],
+                                transaction["iban"],
+                                transaction["transactionDate"],
+                                transaction["description"],
+                                transaction["transactionValue"],
+                                transaction["transactionCurrency"],
+                                transaction["transactionStatus"],
+                                json.dumps(transaction["rawTransaction"]),
+                            ),
+                        )
+
+                        if not exists:
+                            new_transactions.append(transaction)
+
+                    except sqlite3.IntegrityError as e:
+                        logger.warning(
+                            f"Failed to insert transaction {transaction.get('transactionId')}: {e}"
+                        )
+                        continue
+
+                conn.commit()
+
+            logger.info(
+                f"Persisted {len(new_transactions)} new transactions for account {account_id}"
+            )
+            return new_transactions
+        except Exception as e:
+            logger.error(f"Failed to persist transactions: {e}")
+            raise
+
+    def get_transactions(
+        self,
+        account_id: Optional[str] = None,
+        limit: Optional[int] = 100,
+        offset: int = 0,
+        date_from: Optional[str] = None,
+        date_to: Optional[str] = None,
+        min_amount: Optional[float] = None,
+        max_amount: Optional[float] = None,
+        search: Optional[str] = None,
+    ) -> List[Dict[str, Any]]:
+        """Get transactions with optional filtering"""
+        if not self._db_exists():
+            return []
+
+        with self._get_db_connection(row_factory=True) as conn:
+            cursor = conn.cursor()
+
+            query = "SELECT * FROM transactions WHERE 1=1"
+            params: List[Union[str, int, float]] = []
+
+            if account_id:
+                query += " AND accountId = ?"
+                params.append(account_id)
+
+            if date_from:
+                query += " AND transactionDate >= ?"
+                params.append(date_from)
+
+            if date_to:
+                query += " AND transactionDate <= ?"
+                params.append(date_to)
+
+            if min_amount is not None:
+                query += " AND transactionValue >= ?"
+                params.append(min_amount)
+
+            if max_amount is not None:
+                query += " AND transactionValue <= ?"
+                params.append(max_amount)
+
+            if search:
+                query += " AND description LIKE ?"
+                params.append(f"%{search}%")
+
+            query += " ORDER BY transactionDate DESC"
+
+            if limit:
+                query += " LIMIT ?"
+                params.append(limit)
+
+            if offset:
+                query += " OFFSET ?"
+                params.append(offset)
+
+            cursor.execute(query, params)
+            rows = cursor.fetchall()
+
+            transactions = []
+            for row in rows:
+                transaction = dict(row)
+                if transaction["rawTransaction"]:
+                    transaction["rawTransaction"] = json.loads(
+                        transaction["rawTransaction"]
+                    )
+                transactions.append(transaction)
+
+            return transactions
+
+    def get_count(
+        self,
+        account_id: Optional[str] = None,
+        date_from: Optional[str] = None,
+        date_to: Optional[str] = None,
+        min_amount: Optional[float] = None,
+        max_amount: Optional[float] = None,
+        search: Optional[str] = None,
+    ) -> int:
+        """Get total count of transactions matching filters"""
+        if not self._db_exists():
+            return 0
+
+        with self._get_db_connection() as conn:
+            cursor = conn.cursor()
+
+            query = "SELECT COUNT(*) FROM transactions WHERE 1=1"
+            params: List[Union[str, float]] = []
+
+            if account_id:
+                query += " AND accountId = ?"
+                params.append(account_id)
+
+            if date_from:
+                query += " AND transactionDate >= ?"
+                params.append(date_from)
+
+            if date_to:
+                query += " AND transactionDate <= ?"
+                params.append(date_to)
+
+            if min_amount is not None:
+                query += " AND transactionValue >= ?"
+                params.append(min_amount)
+
+            if max_amount is not None:
+                query += " AND transactionValue <= ?"
+                params.append(max_amount)
+
+            if search:
+                query += " AND description LIKE ?"
+                params.append(f"%{search}%")
+
+            cursor.execute(query, params)
+            return cursor.fetchone()[0]
+
+    def get_account_summary(self, account_id: str) -> Optional[Dict[str, Any]]:
+        """Get basic account info from transactions table"""
+        if not self._db_exists():
+            return None
+
+        with self._get_db_connection(row_factory=True) as conn:
+            cursor = conn.cursor()
+
+            cursor.execute(
+                """
+                SELECT DISTINCT accountId, institutionId, iban
+                FROM transactions
+                WHERE accountId = ?
+                ORDER BY transactionDate DESC
+                LIMIT 1
+            """,
+                (account_id,),
+            )
+
+            row = cursor.fetchone()
+            if row:
+                return dict(row)
+            return None

leggen/services/backup_service.py

@@ -0,0 +1,192 @@
+"""Backup service for S3 storage."""
+
+import tempfile
+from datetime import datetime
+from pathlib import Path
+from typing import Optional
+
+import boto3
+from botocore.exceptions import ClientError, NoCredentialsError
+from loguru import logger
+
+from leggen.models.config import S3BackupConfig
+
+
+class BackupService:
+    """Service for managing S3 backups."""
+
+    def __init__(self, s3_config: Optional[S3BackupConfig] = None):
+        """Initialize backup service with S3 configuration."""
+        self.s3_config = s3_config
+        self._s3_client = None
+
+    def _get_s3_client(self, config: Optional[S3BackupConfig] = None):
+        """Get or create S3 client with current configuration."""
+        current_config = config or self.s3_config
+        if not current_config:
+            raise ValueError("S3 configuration is required")
+
+        # Create S3 client with configuration
+        session = boto3.Session(
+            aws_access_key_id=current_config.access_key_id,
+            aws_secret_access_key=current_config.secret_access_key,
+            region_name=current_config.region,
+        )
+
+        s3_kwargs = {}
+        if current_config.endpoint_url:
+            s3_kwargs["endpoint_url"] = current_config.endpoint_url
+
+        if current_config.path_style:
+            from botocore.config import Config
+
+            s3_kwargs["config"] = Config(s3={"addressing_style": "path"})
+
+        return session.client("s3", **s3_kwargs)
+
+    async def test_connection(self, config: S3BackupConfig) -> bool:
+        """Test S3 connection with provided configuration.
+
+        Args:
+            config: S3 configuration to test
+
+        Returns:
+            True if connection successful, False otherwise
+        """
+        try:
+            s3_client = self._get_s3_client(config)
+
+            # Try to list objects in the bucket (limited to 1 to minimize cost)
+            s3_client.list_objects_v2(Bucket=config.bucket_name, MaxKeys=1)
+
+            logger.info(
+                f"S3 connection test successful for bucket: {config.bucket_name}"
+            )
+            return True
+
+        except NoCredentialsError:
+            logger.error("S3 credentials not found or invalid")
+            return False
+        except ClientError as e:
+            error_code = e.response["Error"]["Code"]
+            logger.error(
+                f"S3 connection test failed: {error_code} - {e.response['Error']['Message']}"
+            )
+            return False
+        except Exception as e:
+            logger.error(f"Unexpected error during S3 connection test: {str(e)}")
+            return False
+
+    async def backup_database(self, database_path: Path) -> bool:
+        """Backup database file to S3.
+
+        Args:
+            database_path: Path to the SQLite database file
+
+        Returns:
+            True if backup successful, False otherwise
+        """
+        if not self.s3_config or not self.s3_config.enabled:
+            logger.warning("S3 backup is not configured or disabled")
+            return False
+
+        if not database_path.exists():
+            logger.error(f"Database file not found: {database_path}")
+            return False
+
+        try:
+            s3_client = self._get_s3_client()
+
+            # Generate backup filename with timestamp
+            timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+            backup_key = f"leggen_backups/database_backup_{timestamp}.db"
+
+            # Upload database file
+            logger.info(f"Starting database backup to S3: {backup_key}")
+            s3_client.upload_file(
+                str(database_path), self.s3_config.bucket_name, backup_key
+            )
+
+            logger.info(f"Database backup completed successfully: {backup_key}")
+            return True
+
+        except Exception as e:
+            logger.error(f"Database backup failed: {str(e)}")
+            return False
+
+    async def list_backups(self) -> list[dict]:
+        """List available backups in S3.
+
+        Returns:
+            List of backup metadata dictionaries
+        """
+        if not self.s3_config or not self.s3_config.enabled:
+            logger.warning("S3 backup is not configured or disabled")
+            return []
+
+        try:
+            s3_client = self._get_s3_client()
+
+            # List objects with backup prefix
+            response = s3_client.list_objects_v2(
+                Bucket=self.s3_config.bucket_name, Prefix="leggen_backups/"
+            )
+
+            backups = []
+            for obj in response.get("Contents", []):
+                backups.append(
+                    {
+                        "key": obj["Key"],
+                        "last_modified": obj["LastModified"].isoformat(),
+                        "size": obj["Size"],
+                    }
+                )
+
+            # Sort by last modified (newest first)
+            backups.sort(key=lambda x: x["last_modified"], reverse=True)
+
+            return backups
+
+        except Exception as e:
+            logger.error(f"Failed to list backups: {str(e)}")
+            return []
+
+    async def restore_database(self, backup_key: str, restore_path: Path) -> bool:
+        """Restore database from S3 backup.
+
+        Args:
+            backup_key: S3 key of the backup to restore
+            restore_path: Path where to restore the database
+
+        Returns:
+            True if restore successful, False otherwise
+        """
+        if not self.s3_config or not self.s3_config.enabled:
+            logger.warning("S3 backup is not configured or disabled")
+            return False
+
+        try:
+            s3_client = self._get_s3_client()
+
+            # Download backup file
+            logger.info(f"Starting database restore from S3: {backup_key}")
+
+            # Create parent directory if it doesn't exist
+            restore_path.parent.mkdir(parents=True, exist_ok=True)
+
+            # Download to temporary file first, then move to final location
+            with tempfile.NamedTemporaryFile(delete=False) as temp_file:
+                s3_client.download_file(
+                    self.s3_config.bucket_name, backup_key, temp_file.name
+                )
+
+                # Move temp file to final location
+                temp_path = Path(temp_file.name)
+                temp_path.replace(restore_path)
+
+            logger.info(f"Database restore completed successfully: {restore_path}")
+            return True
+
+        except Exception as e:
+            logger.error(f"Database restore failed: {str(e)}")
+            return False

leggen/services/data_processors/__init__.py

@@ -0,0 +1,13 @@
+"""Data processing layer for all transformation logic."""
+
+from leggen.services.data_processors.account_enricher import AccountEnricher
+from leggen.services.data_processors.analytics_processor import AnalyticsProcessor
+from leggen.services.data_processors.balance_transformer import BalanceTransformer
+from leggen.services.data_processors.transaction_processor import TransactionProcessor
+
+__all__ = [
+    "AccountEnricher",
+    "AnalyticsProcessor",
+    "BalanceTransformer",
+    "TransactionProcessor",
+]

leggen/services/data_processors/account_enricher.py

@@ -0,0 +1,71 @@
+"""Account enrichment processor for adding currency, logos, and metadata."""
+
+from typing import Any, Dict
+
+from loguru import logger
+
+from leggen.services.gocardless_service import GoCardlessService
+
+
+class AccountEnricher:
+    """Enriches account details with currency and institution information."""
+
+    def __init__(self):
+        self.gocardless = GoCardlessService()
+
+    async def enrich_account_details(
+        self,
+        account_details: Dict[str, Any],
+        balances: Dict[str, Any],
+    ) -> Dict[str, Any]:
+        """
+        Enrich account details with currency from balances and institution logo.
+
+        Args:
+            account_details: Raw account details from GoCardless
+            balances: Balance data containing currency information
+
+        Returns:
+            Enriched account details with currency and logo added
+        """
+        enriched_account = account_details.copy()
+
+        # Extract currency from first balance
+        currency = self._extract_currency_from_balances(balances)
+        if currency:
+            enriched_account["currency"] = currency
+
+        # Fetch and add institution logo
+        institution_id = enriched_account.get("institution_id")
+        if institution_id:
+            logo = await self._fetch_institution_logo(institution_id)
+            if logo:
+                enriched_account["logo"] = logo
+
+        return enriched_account
+
+    def _extract_currency_from_balances(self, balances: Dict[str, Any]) -> str | None:
+        """Extract currency from the first balance in the balances data."""
+        balances_list = balances.get("balances", [])
+        if not balances_list:
+            return None
+
+        first_balance = balances_list[0]
+        balance_amount = first_balance.get("balanceAmount", {})
+        return balance_amount.get("currency")
+
+    async def _fetch_institution_logo(self, institution_id: str) -> str | None:
+        """Fetch institution logo from GoCardless API."""
+        try:
+            institution_details = await self.gocardless.get_institution_details(
+                institution_id
+            )
+            logo = institution_details.get("logo", "")
+            if logo:
+                logger.info(f"Fetched logo for institution {institution_id}: {logo}")
+            return logo
+        except Exception as e:
+            logger.warning(
+                f"Failed to fetch institution details for {institution_id}: {e}"
+            )
+            return None

leggen/services/data_processors/analytics_processor.py

@@ -0,0 +1,201 @@
+"""Analytics processor for calculating historical balances and statistics."""
+
+import sqlite3
+from datetime import datetime, timedelta
+from pathlib import Path
+from typing import Any, Dict, List, Optional
+
+from loguru import logger
+
+
+class AnalyticsProcessor:
+    """Calculates historical balances and transaction statistics from database data."""
+
+    def calculate_historical_balances(
+        self,
+        db_path: Path,
+        account_id: Optional[str] = None,
+        days: int = 365,
+    ) -> List[Dict[str, Any]]:
+        """
+        Generate historical balance progression based on transaction history.
+
+        Uses current balances and subtracts future transactions to calculate
+        balance at each historical point in time.
+
+        Args:
+            db_path: Path to SQLite database
+            account_id: Optional account ID to filter by
+            days: Number of days to look back (default 365)
+
+        Returns:
+            List of historical balance data points
+        """
+        if not db_path.exists():
+            return []
+
+        conn = sqlite3.connect(str(db_path))
+        conn.row_factory = sqlite3.Row
+        cursor = conn.cursor()
+
+        try:
+            cutoff_date = (datetime.now() - timedelta(days=days)).date().isoformat()
+            today_date = datetime.now().date().isoformat()
+
+            # Single SQL query to generate historical balances using window functions
+            query = """
+            WITH RECURSIVE date_series AS (
+                -- Generate weekly dates from cutoff_date to today
+                SELECT date(?) as ref_date
+                UNION ALL
+                SELECT date(ref_date, '+7 days')
+                FROM date_series
+                WHERE ref_date < date(?)
+            ),
+            current_balances AS (
+                -- Get current balance for each account/type
+                SELECT account_id, type, amount, currency
+                FROM balances b1
+                WHERE b1.timestamp = (
+                    SELECT MAX(b2.timestamp)
+                    FROM balances b2
+                    WHERE b2.account_id = b1.account_id AND b2.type = b1.type
+                )
+                {account_filter}
+                AND b1.type = 'closingBooked'  -- Focus on closingBooked for charts
+            ),
+            historical_points AS (
+                -- Calculate balance at each weekly point by subtracting future transactions
+                SELECT
+                    cb.account_id,
+                    cb.type as balance_type,
+                    cb.currency,
+                    ds.ref_date,
+                    cb.amount - COALESCE(
+                        (SELECT SUM(t.transactionValue)
+                         FROM transactions t
+                         WHERE t.accountId = cb.account_id
+                         AND date(t.transactionDate) > ds.ref_date), 0
+                    ) as balance_amount
+                FROM current_balances cb
+                CROSS JOIN date_series ds
+            )
+            SELECT
+                account_id || '_' || balance_type || '_' || ref_date as id,
+                account_id,
+                balance_amount,
+                balance_type,
+                currency,
+                ref_date as reference_date
+            FROM historical_points
+            ORDER BY account_id, ref_date
+            """
+
+            # Build parameters and account filter
+            params = [cutoff_date, today_date]
+            if account_id:
+                account_filter = "AND b1.account_id = ?"
+                params.append(account_id)
+            else:
+                account_filter = ""
+
+            # Format the query with conditional filter
+            formatted_query = query.format(account_filter=account_filter)
+
+            cursor.execute(formatted_query, params)
+            rows = cursor.fetchall()
+
+            conn.close()
+            return [dict(row) for row in rows]
+
+        except Exception as e:
+            conn.close()
+            logger.error(f"Failed to calculate historical balances: {e}")
+            raise
+
+    def calculate_monthly_stats(
+        self,
+        db_path: Path,
+        account_id: Optional[str] = None,
+        date_from: Optional[str] = None,
+        date_to: Optional[str] = None,
+    ) -> List[Dict[str, Any]]:
+        """
+        Calculate monthly transaction statistics aggregated from database.
+
+        Sums transactions by month and calculates income, expenses, and net values.
+
+        Args:
+            db_path: Path to SQLite database
+            account_id: Optional account ID to filter by
+            date_from: Optional start date (ISO format)
+            date_to: Optional end date (ISO format)
+
+        Returns:
+            List of monthly statistics with income, expenses, and net totals
+        """
+        if not db_path.exists():
+            return []
+
+        conn = sqlite3.connect(str(db_path))
+        conn.row_factory = sqlite3.Row
+        cursor = conn.cursor()
+
+        try:
+            # SQL query to aggregate transactions by month
+            query = """
+            SELECT
+                strftime('%Y-%m', transactionDate) as month,
+                COALESCE(SUM(CASE WHEN transactionValue > 0 THEN transactionValue ELSE 0 END), 0) as income,
+                COALESCE(SUM(CASE WHEN transactionValue < 0 THEN ABS(transactionValue) ELSE 0 END), 0) as expenses,
+                COALESCE(SUM(transactionValue), 0) as net
+            FROM transactions
+            WHERE 1=1
+            """
+
+            params = []
+
+            if account_id:
+                query += " AND accountId = ?"
+                params.append(account_id)
+
+            if date_from:
+                query += " AND transactionDate >= ?"
+                params.append(date_from)
+
+            if date_to:
+                query += " AND transactionDate <= ?"
+                params.append(date_to)
+
+            query += """
+            GROUP BY strftime('%Y-%m', transactionDate)
+            ORDER BY month ASC
+            """
+
+            cursor.execute(query, params)
+            rows = cursor.fetchall()
+
+            # Convert to desired format with proper month display
+            monthly_stats = []
+            for row in rows:
+                # Convert YYYY-MM to display format like "Mar 2024"
+                year, month_num = row["month"].split("-")
+                month_date = datetime.strptime(f"{year}-{month_num}-01", "%Y-%m-%d")
+                display_month = month_date.strftime("%b %Y")
+
+                monthly_stats.append(
+                    {
+                        "month": display_month,
+                        "income": round(row["income"], 2),
+                        "expenses": round(row["expenses"], 2),
+                        "net": round(row["net"], 2),
+                    }
+                )
+
+            conn.close()
+            return monthly_stats
+
+        except Exception as e:
+            conn.close()
+            logger.error(f"Failed to calculate monthly stats: {e}")
+            raise

leggen/services/data_processors/balance_transformer.py

@@ -0,0 +1,69 @@
+"""Balance data transformation processor for format conversions."""
+
+from datetime import datetime
+from typing import Any, Dict, List, Tuple
+
+
+class BalanceTransformer:
+    """Transforms balance data between GoCardless and internal database formats."""
+
+    def merge_account_metadata_into_balances(
+        self,
+        balances: Dict[str, Any],
+        account_details: Dict[str, Any],
+    ) -> Dict[str, Any]:
+        """
+        Merge account metadata into balance data for proper persistence.
+
+        This adds institution_id, iban, and account_status to the balances
+        so they can be persisted alongside the balance data.
+
+        Args:
+            balances: Raw balance data from GoCardless
+            account_details: Enriched account details containing metadata
+
+        Returns:
+            Balance data with account metadata merged in
+        """
+        balances_with_metadata = balances.copy()
+        balances_with_metadata["institution_id"] = account_details.get("institution_id")
+        balances_with_metadata["iban"] = account_details.get("iban")
+        balances_with_metadata["account_status"] = account_details.get("status")
+        return balances_with_metadata
+
+    def transform_to_database_format(
+        self,
+        account_id: str,
+        balance_data: Dict[str, Any],
+    ) -> List[Tuple[Any, ...]]:
+        """
+        Transform GoCardless balance format to database row format.
+
+        Converts nested GoCardless balance structure into flat tuples
+        ready for SQLite insertion.
+
+        Args:
+            account_id: The account ID
+            balance_data: Balance data with merged account metadata
+
+        Returns:
+            List of tuples in database row format (account_id, bank, status, ...)
+        """
+        rows = []
+
+        for balance in balance_data.get("balances", []):
+            balance_amount = balance.get("balanceAmount", {})
+
+            row = (
+                account_id,
+                balance_data.get("institution_id", "unknown"),
+                balance_data.get("account_status"),
+                balance_data.get("iban", "N/A"),
+                float(balance_amount.get("amount", 0)),
+                balance_amount.get("currency"),
+                balance.get("balanceType"),
+                datetime.now().isoformat(),
+            )
+            rows.append(row)
+
+        return rows

leggen/services/data_processors/transaction_processor.py

@@ -70,7 +70,10 @@ class TransactionProcessor:
         internal_transaction_id = transaction.get("internalTransactionId")
 
         if not transaction_id:
-            raise ValueError("Transaction missing required transactionId field")
+            if internal_transaction_id:
+                transaction_id = internal_transaction_id
+            else:
+                raise ValueError("Transaction missing required transactionId field")
 
         return {
             "accountId": account_id,

leggen/services/gocardless_service.py

@@ -9,16 +9,21 @@ from leggen.utils.config import config
 from leggen.utils.paths import path_manager
 
 
-def _log_rate_limits(response):
+def _log_rate_limits(response, method, url):
     """Log GoCardless API rate limit headers"""
     limit = response.headers.get("http_x_ratelimit_limit")
     remaining = response.headers.get("http_x_ratelimit_remaining")
     reset = response.headers.get("http_x_ratelimit_reset")
 
-    if limit or remaining or reset:
-        logger.info(
-            f"GoCardless rate limits - Limit: {limit}, Remaining: {remaining}, Reset: {reset}s"
-        )
+    account_limit = response.headers.get("http_x_ratelimit_account_success_limit")
+    account_remaining = response.headers.get(
+        "http_x_ratelimit_account_success_remaining"
+    )
+    account_reset = response.headers.get("http_x_ratelimit_account_success_reset")
+
+    logger.debug(
+        f"{method} {url} Limit/Remaining/Reset (Global: {limit}/{remaining}/{reset}s) (Account: {account_limit}/{account_remaining}/{account_reset}s)"
+    )
 
 
 class GoCardlessService:
@@ -36,16 +41,20 @@ class GoCardlessService:
         headers = await self._get_auth_headers()
 
         async with httpx.AsyncClient() as client:
-            response = await client.request(method, url, headers=headers, **kwargs)
-            _log_rate_limits(response)
+            response = await client.request(
+                method, url, headers=headers, timeout=30, **kwargs
+            )
+            _log_rate_limits(response, method, url)
 
             # If we get 401, clear token cache and retry once
             if response.status_code == 401:
                 logger.warning("Got 401, clearing token cache and retrying")
                 self._token = None
                 headers = await self._get_auth_headers()
-                response = await client.request(method, url, headers=headers, **kwargs)
-                _log_rate_limits(response)
+                response = await client.request(
+                    method, url, headers=headers, timeout=30, **kwargs
+                )
+                _log_rate_limits(response, method, url)
 
             response.raise_for_status()
             return response.json()
@@ -76,7 +85,9 @@ class GoCardlessService:
                                 f"{self.base_url}/token/refresh/",
                                 json={"refresh": auth["refresh"]},
                             )
-                            _log_rate_limits(response)
+                            _log_rate_limits(
+                                response, "POST", f"{self.base_url}/token/refresh/"
+                            )
                             response.raise_for_status()
                             auth.update(response.json())
                             self._save_auth(auth)
@@ -104,7 +115,7 @@ class GoCardlessService:
                         "secret_key": self.config["secret"],
                     },
                 )
-                _log_rate_limits(response)
+                _log_rate_limits(response, "POST", f"{self.base_url}/token/new/")
                 response.raise_for_status()
                 auth = response.json()
                 self._save_auth(auth)

leggen/services/notification_service.py

@@ -52,11 +52,17 @@ class NotificationService:
 
     async def send_expiry_notification(self, notification_data: Dict[str, Any]) -> None:
         """Send notification about account expiry"""
-        if self._is_discord_enabled():
-            await self._send_discord_expiry(notification_data)
+        try:
+            if self._is_discord_enabled():
+                await self._send_discord_expiry(notification_data)
+        except Exception as e:
+            logger.error(f"Failed to send Discord expiry notification: {e}")
 
-        if self._is_telegram_enabled():
-            await self._send_telegram_expiry(notification_data)
+        try:
+            if self._is_telegram_enabled():
+                await self._send_telegram_expiry(notification_data)
+        except Exception as e:
+            logger.error(f"Failed to send Telegram expiry notification: {e}")
 
     def _filter_transactions(
         self, transactions: List[Dict[str, Any]]
@@ -262,7 +268,6 @@ class NotificationService:
             logger.info(f"Sent Discord expiry notification: {notification_data}")
         except Exception as e:
             logger.error(f"Failed to send Discord expiry notification: {e}")
-            raise
 
     async def _send_telegram_expiry(self, notification_data: Dict[str, Any]) -> None:
         """Send Telegram expiry notification"""
@@ -288,17 +293,22 @@ class NotificationService:
             logger.info(f"Sent Telegram expiry notification: {notification_data}")
         except Exception as e:
             logger.error(f"Failed to send Telegram expiry notification: {e}")
-            raise
 
     async def send_sync_failure_notification(
         self, notification_data: Dict[str, Any]
     ) -> None:
         """Send notification about sync failure"""
-        if self._is_discord_enabled():
-            await self._send_discord_sync_failure(notification_data)
+        try:
+            if self._is_discord_enabled():
+                await self._send_discord_sync_failure(notification_data)
+        except Exception as e:
+            logger.error(f"Failed to send Discord sync failure notification: {e}")
 
-        if self._is_telegram_enabled():
-            await self._send_telegram_sync_failure(notification_data)
+        try:
+            if self._is_telegram_enabled():
+                await self._send_telegram_sync_failure(notification_data)
+        except Exception as e:
+            logger.error(f"Failed to send Telegram sync failure notification: {e}")
 
     async def _send_discord_sync_failure(
         self, notification_data: Dict[str, Any]
@@ -326,7 +336,6 @@ class NotificationService:
             logger.info(f"Sent Discord sync failure notification: {notification_data}")
         except Exception as e:
             logger.error(f"Failed to send Discord sync failure notification: {e}")
-            raise
 
     async def _send_telegram_sync_failure(
         self, notification_data: Dict[str, Any]
@@ -354,4 +363,3 @@ class NotificationService:
             logger.info(f"Sent Telegram sync failure notification: {notification_data}")
         except Exception as e:
             logger.error(f"Failed to send Telegram sync failure notification: {e}")
-            raise

leggen/services/sync_service.py

@@ -4,18 +4,41 @@ from typing import List
 from loguru import logger
 
 from leggen.api.models.sync import SyncResult, SyncStatus
-from leggen.services.database_service import DatabaseService
+from leggen.repositories import (
+    AccountRepository,
+    BalanceRepository,
+    SyncRepository,
+    TransactionRepository,
+)
+from leggen.services.data_processors import (
+    AccountEnricher,
+    BalanceTransformer,
+    TransactionProcessor,
+)
 from leggen.services.gocardless_service import GoCardlessService
 from leggen.services.notification_service import NotificationService
 
+# Constants for notification
+EXPIRED_DAYS_LEFT = 0
+
 
 class SyncService:
     def __init__(self):
         self.gocardless = GoCardlessService()
-        self.database = DatabaseService()
         self.notifications = NotificationService()
+
+        # Repositories
+        self.accounts = AccountRepository()
+        self.balances = BalanceRepository()
+        self.transactions = TransactionRepository()
+        self.sync = SyncRepository()
+
+        # Data processors
+        self.account_enricher = AccountEnricher()
+        self.balance_transformer = BalanceTransformer()
+        self.transaction_processor = TransactionProcessor()
+
         self._sync_status = SyncStatus(is_running=False)
-        self._institution_logos = {}  # Cache for institution logos
 
     async def get_sync_status(self) -> SyncStatus:
         """Get current sync status"""
@@ -67,6 +90,9 @@ class SyncService:
             self._sync_status.total_accounts = len(all_accounts)
             logs.append(f"Found {len(all_accounts)} accounts to sync")
 
+            # Check for expired or expiring requisitions
+            await self._check_requisition_expiry(requisitions.get("results", []))
+
             # Process each account
             for account_id in all_accounts:
                 try:
@@ -78,72 +104,44 @@ class SyncService:
                     # Get balances to extract currency information
                     balances = await self.gocardless.get_account_balances(account_id)
 
-                    # Enrich account details with currency and institution logo
+                    # Enrich and persist account details
                     if account_details and balances:
-                        enriched_account_details = account_details.copy()
-
-                        # Extract currency from first balance
-                        balances_list = balances.get("balances", [])
-                        if balances_list:
-                            first_balance = balances_list[0]
-                            balance_amount = first_balance.get("balanceAmount", {})
-                            currency = balance_amount.get("currency")
-                            if currency:
-                                enriched_account_details["currency"] = currency
-
-                        # Get institution details to fetch logo
-                        institution_id = enriched_account_details.get("institution_id")
-                        if institution_id:
-                            try:
-                                institution_details = (
-                                    await self.gocardless.get_institution_details(
-                                        institution_id
-                                    )
-                                )
-                                enriched_account_details["logo"] = (
-                                    institution_details.get("logo", "")
-                                )
-                                logger.info(
-                                    f"Fetched logo for institution {institution_id}: {enriched_account_details.get('logo', 'No logo')}"
-                                )
-                            except Exception as e:
-                                logger.warning(
-                                    f"Failed to fetch institution details for {institution_id}: {e}"
-                                )
+                        # Enrich account with currency and institution logo
+                        enriched_account_details = (
+                            await self.account_enricher.enrich_account_details(
+                                account_details, balances
+                            )
+                        )
 
                         # Persist enriched account details to database
-                        await self.database.persist_account_details(
-                            enriched_account_details
-                        )
+                        self.accounts.persist(enriched_account_details)
 
-                        # Merge account details into balances data for proper persistence
-                        balances_with_account_info = balances.copy()
-                        balances_with_account_info["institution_id"] = (
-                            enriched_account_details.get("institution_id")
+                        # Merge account metadata into balances for persistence
+                        balances_with_account_info = self.balance_transformer.merge_account_metadata_into_balances(
+                            balances, enriched_account_details
                         )
-                        balances_with_account_info["iban"] = (
-                            enriched_account_details.get("iban")
-                        )
-                        balances_with_account_info["account_status"] = (
-                            enriched_account_details.get("status")
-                        )
-                        await self.database.persist_balance(
-                            account_id, balances_with_account_info
+                        balance_rows = (
+                            self.balance_transformer.transform_to_database_format(
+                                account_id, balances_with_account_info
+                            )
                         )
+                        self.balances.persist(account_id, balance_rows)
                         balances_updated += len(balances.get("balances", []))
                     elif account_details:
                         # Fallback: persist account details without currency if balances failed
-                        await self.database.persist_account_details(account_details)
+                        self.accounts.persist(account_details)
 
                     # Get and save transactions
                     transactions = await self.gocardless.get_account_transactions(
                         account_id
                     )
                     if transactions:
-                        processed_transactions = self.database.process_transactions(
-                            account_id, account_details, transactions
+                        processed_transactions = (
+                            self.transaction_processor.process_transactions(
+                                account_id, account_details, transactions
+                            )
                         )
-                        new_transactions = await self.database.persist_transactions(
+                        new_transactions = self.transactions.persist(
                             account_id, processed_transactions
                         )
                         transactions_added += len(new_transactions)
@@ -166,6 +164,15 @@ class SyncService:
                     logger.error(error_msg)
                     logs.append(error_msg)
 
+                    # Send notification for account sync failure
+                    await self.notifications.send_sync_failure_notification(
+                        {
+                            "account_id": account_id,
+                            "error": error_msg,
+                            "type": "account_sync_failure",
+                        }
+                    )
+
             end_time = datetime.now()
             duration = (end_time - start_time).total_seconds()
 
@@ -188,9 +195,7 @@ class SyncService:
 
             # Persist sync operation to database
             try:
-                operation_id = await self.database.persist_sync_operation(
-                    sync_operation
-                )
+                operation_id = self.sync.persist(sync_operation)
                 logger.debug(f"Saved sync operation with ID: {operation_id}")
             except Exception as e:
                 logger.error(f"Failed to persist sync operation: {e}")
@@ -239,9 +244,7 @@ class SyncService:
             )
 
             try:
-                operation_id = await self.database.persist_sync_operation(
-                    sync_operation
-                )
+                operation_id = self.sync.persist(sync_operation)
                 logger.debug(f"Saved failed sync operation with ID: {operation_id}")
             except Exception as persist_error:
                 logger.error(
@@ -252,6 +255,31 @@ class SyncService:
         finally:
             self._sync_status.is_running = False
 
+    async def _check_requisition_expiry(self, requisitions: List[dict]) -> None:
+        """Check requisitions for expiry and send notifications.
+
+        Args:
+            requisitions: List of requisition dictionaries to check
+        """
+        for req in requisitions:
+            requisition_id = req.get("id", "unknown")
+            institution_id = req.get("institution_id", "unknown")
+            status = req.get("status", "")
+
+            # Check if requisition is expired
+            if status == "EX":
+                logger.warning(
+                    f"Requisition {requisition_id} for {institution_id} has expired"
+                )
+                await self.notifications.send_expiry_notification(
+                    {
+                        "bank": institution_id,
+                        "requisition_id": requisition_id,
+                        "status": "expired",
+                        "days_left": EXPIRED_DAYS_LEFT,
+                    }
+                )
+
     async def sync_specific_accounts(
         self, account_ids: List[str], force: bool = False, trigger_type: str = "manual"
     ) -> SyncResult:

leggen/utils/config.py

@@ -162,6 +162,11 @@ class Config:
         }
         return self.config.get("scheduler", default_schedule)
 
+    @property
+    def backup_config(self) -> Dict[str, Any]:
+        """Get backup configuration"""
+        return self.config.get("backup", {})
+
 
 def load_config(ctx: click.Context, _, filename):
     try:

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "leggen"
-version = "2025.9.24"
+version = "2025.11.0"
 description = "An Open Banking CLI"
 authors = [{ name = "Elisiário Couto", email = "elisiario@couto.io" }]
 requires-python = "~=3.13.0"
@@ -35,6 +35,7 @@ dependencies = [
     "tomli-w>=1.0.0,<2",
     "httpx>=0.28.1",
     "pydantic>=2.0.0,<3",
+    "boto3>=1.35.0,<2",
 ]
 
 [project.urls]
@@ -88,5 +89,5 @@ markers = [
 ]
 
 [[tool.mypy.overrides]]
-module = ["apscheduler.*", "discord_webhook.*"]
+module = ["apscheduler.*", "discord_webhook.*", "botocore.*", "boto3.*"]
 ignore_missing_imports = true

scripts/generate_sample_db.py

@@ -1,548 +0,0 @@
-#!/usr/bin/env python3
-"""Sample database generator for Leggen testing and development."""
-
-import json
-import random
-import sqlite3
-import sys
-from datetime import datetime, timedelta
-from pathlib import Path
-from typing import Any, Dict, List
-
-import click
-
-# Add the project root to the Python path
-project_root = Path(__file__).parent.parent
-sys.path.insert(0, str(project_root))
-
-# Import after path setup - this is necessary for the script to work
-from leggen.utils.paths import path_manager  # noqa: E402
-
-
-class SampleDataGenerator:
-    """Generates realistic sample data for testing Leggen."""
-
-    def __init__(self, db_path: Path):
-        self.db_path = db_path
-        self.institutions = [
-            {
-                "id": "REVOLUT_REVOLT21",
-                "name": "Revolut",
-                "bic": "REVOLT21",
-                "country": "LT",
-            },
-            {
-                "id": "BANCOBPI_BBPIPTPL",
-                "name": "Banco BPI",
-                "bic": "BBPIPTPL",
-                "country": "PT",
-            },
-            {
-                "id": "MONZO_MONZGB2L",
-                "name": "Monzo Bank",
-                "bic": "MONZGB2L",
-                "country": "GB",
-            },
-            {
-                "id": "NUBANK_NUPBBR25",
-                "name": "Nu Pagamentos",
-                "bic": "NUPBBR25",
-                "country": "BR",
-            },
-        ]
-
-        self.transaction_types = [
-            {
-                "description": "Grocery Store",
-                "amount_range": (-150, -20),
-                "frequency": 0.3,
-            },
-            {"description": "Coffee Shop", "amount_range": (-15, -3), "frequency": 0.2},
-            {
-                "description": "Gas Station",
-                "amount_range": (-80, -30),
-                "frequency": 0.1,
-            },
-            {
-                "description": "Online Shopping",
-                "amount_range": (-200, -25),
-                "frequency": 0.15,
-            },
-            {
-                "description": "Restaurant",
-                "amount_range": (-60, -15),
-                "frequency": 0.15,
-            },
-            {"description": "Salary", "amount_range": (2500, 5000), "frequency": 0.02},
-            {
-                "description": "ATM Withdrawal",
-                "amount_range": (-200, -20),
-                "frequency": 0.05,
-            },
-            {
-                "description": "Transfer to Savings",
-                "amount_range": (-1000, -100),
-                "frequency": 0.03,
-            },
-        ]
-
-    def ensure_database_dir(self):
-        """Ensure database directory exists."""
-        self.db_path.parent.mkdir(parents=True, exist_ok=True)
-
-    def create_tables(self):
-        """Create database tables."""
-        conn = sqlite3.connect(str(self.db_path))
-        cursor = conn.cursor()
-
-        # Create accounts table
-        cursor.execute("""
-            CREATE TABLE IF NOT EXISTS accounts (
-                id TEXT PRIMARY KEY,
-                institution_id TEXT,
-                status TEXT,
-                iban TEXT,
-                name TEXT,
-                currency TEXT,
-                created DATETIME,
-                last_accessed DATETIME,
-                last_updated DATETIME,
-                display_name TEXT
-            )
-        """)
-
-        # Create transactions table with composite primary key
-        cursor.execute("""
-            CREATE TABLE IF NOT EXISTS transactions (
-                accountId TEXT NOT NULL,
-                transactionId TEXT NOT NULL,
-                internalTransactionId TEXT,
-                institutionId TEXT,
-                iban TEXT,
-                transactionDate DATETIME,
-                description TEXT,
-                transactionValue REAL,
-                transactionCurrency TEXT,
-                transactionStatus TEXT,
-                rawTransaction JSON,
-                PRIMARY KEY (accountId, transactionId)
-            )
-        """)
-
-        # Create balances table
-        cursor.execute("""
-            CREATE TABLE IF NOT EXISTS balances (
-                id INTEGER PRIMARY KEY AUTOINCREMENT,
-                account_id TEXT,
-                bank TEXT,
-                status TEXT,
-                iban TEXT,
-                amount REAL,
-                currency TEXT,
-                type TEXT,
-                timestamp DATETIME
-            )
-        """)
-
-        # Create indexes
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_transactions_internal_id ON transactions(internalTransactionId)"
-        )
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_transactions_date ON transactions(transactionDate)"
-        )
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_transactions_account_date ON transactions(accountId, transactionDate)"
-        )
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_transactions_amount ON transactions(transactionValue)"
-        )
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_balances_account_id ON balances(account_id)"
-        )
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_balances_timestamp ON balances(timestamp)"
-        )
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_balances_account_type_timestamp ON balances(account_id, type, timestamp)"
-        )
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_accounts_institution_id ON accounts(institution_id)"
-        )
-        cursor.execute(
-            "CREATE INDEX IF NOT EXISTS idx_accounts_status ON accounts(status)"
-        )
-
-        conn.commit()
-        conn.close()
-
-    def generate_iban(self, country_code: str) -> str:
-        """Generate a realistic IBAN for the given country."""
-        ibans = {
-            "LT": lambda: f"LT{random.randint(10, 99)}{random.randint(10000, 99999)}{random.randint(10000000, 99999999)}",
-            "PT": lambda: f"PT{random.randint(10, 99)}{random.randint(1000, 9999)}{random.randint(1000, 9999)}{random.randint(10000000000, 99999999999)}",
-            "GB": lambda: f"GB{random.randint(10, 99)}MONZ{random.randint(100000, 999999)}{random.randint(100000, 999999)}",
-            "BR": lambda: f"BR{random.randint(10, 99)}{random.randint(10000000, 99999999)}{random.randint(1000, 9999)}{random.randint(10000000, 99999999)}",
-        }
-        return ibans.get(
-            country_code,
-            lambda: f"{country_code}{random.randint(1000000000000000, 9999999999999999)}",
-        )()
-
-    def generate_accounts(self, num_accounts: int = 3) -> List[Dict[str, Any]]:
-        """Generate sample accounts."""
-        accounts = []
-        base_date = datetime.now() - timedelta(days=90)
-
-        for i in range(num_accounts):
-            institution = random.choice(self.institutions)
-            account_id = f"account-{i + 1:03d}-{random.randint(1000, 9999)}"
-
-            account = {
-                "id": account_id,
-                "institution_id": institution["id"],
-                "status": "READY",
-                "iban": self.generate_iban(institution["country"]),
-                "name": f"Personal Account {i + 1}",
-                "currency": "EUR",
-                "created": (
-                    base_date + timedelta(days=random.randint(0, 30))
-                ).isoformat(),
-                "last_accessed": (
-                    datetime.now() - timedelta(hours=random.randint(1, 48))
-                ).isoformat(),
-                "last_updated": datetime.now().isoformat(),
-            }
-            accounts.append(account)
-
-        return accounts
-
-    def generate_transactions(
-        self, accounts: List[Dict[str, Any]], num_transactions_per_account: int = 50
-    ) -> List[Dict[str, Any]]:
-        """Generate sample transactions for accounts."""
-        transactions = []
-        base_date = datetime.now() - timedelta(days=60)
-
-        for account in accounts:
-            account_transactions = []
-            current_balance = random.uniform(500, 3000)
-
-            for i in range(num_transactions_per_account):
-                # Choose transaction type based on frequency weights
-                transaction_type = random.choices(
-                    self.transaction_types,
-                    weights=[t["frequency"] for t in self.transaction_types],
-                )[0]
-
-                # Generate transaction amount
-                min_amount, max_amount = transaction_type["amount_range"]
-                amount = round(random.uniform(min_amount, max_amount), 2)
-
-                # Generate transaction date (more recent transactions are more likely)
-                days_ago = random.choices(
-                    range(60), weights=[1.5 ** (60 - d) for d in range(60)]
-                )[0]
-                transaction_date = base_date + timedelta(
-                    days=days_ago,
-                    hours=random.randint(6, 22),
-                    minutes=random.randint(0, 59),
-                )
-
-                # Generate transaction IDs
-                transaction_id = f"bank-txn-{account['id']}-{i + 1:04d}"
-                internal_transaction_id = f"int-txn-{random.randint(100000, 999999)}"
-
-                # Create realistic descriptions
-                descriptions = {
-                    "Grocery Store": [
-                        "TESCO",
-                        "SAINSBURY'S",
-                        "LIDL",
-                        "ALDI",
-                        "WALMART",
-                        "CARREFOUR",
-                    ],
-                    "Coffee Shop": [
-                        "STARBUCKS",
-                        "COSTA COFFEE",
-                        "PRET A MANGER",
-                        "LOCAL CAFE",
-                    ],
-                    "Gas Station": ["BP", "SHELL", "ESSO", "GALP", "PETROBRAS"],
-                    "Online Shopping": ["AMAZON", "EBAY", "ZALANDO", "ASOS", "APPLE"],
-                    "Restaurant": [
-                        "PIZZA HUT",
-                        "MCDONALD'S",
-                        "BURGER KING",
-                        "LOCAL RESTAURANT",
-                    ],
-                    "Salary": ["MONTHLY SALARY", "PAYROLL DEPOSIT", "SALARY PAYMENT"],
-                    "ATM Withdrawal": ["ATM WITHDRAWAL", "CASH WITHDRAWAL"],
-                    "Transfer to Savings": ["SAVINGS TRANSFER", "INVESTMENT TRANSFER"],
-                }
-
-                specific_descriptions = descriptions.get(
-                    transaction_type["description"], [transaction_type["description"]]
-                )
-                description = random.choice(specific_descriptions)
-
-                # Create raw transaction (simplified GoCardless format)
-                raw_transaction = {
-                    "transactionId": transaction_id,
-                    "bookingDate": transaction_date.strftime("%Y-%m-%d"),
-                    "valueDate": transaction_date.strftime("%Y-%m-%d"),
-                    "transactionAmount": {
-                        "amount": str(amount),
-                        "currency": account["currency"],
-                    },
-                    "remittanceInformationUnstructured": description,
-                    "bankTransactionCode": "PMNT" if amount < 0 else "RCDT",
-                }
-
-                # Determine status (most are booked, some recent ones might be pending)
-                status = (
-                    "pending" if days_ago < 2 and random.random() < 0.1 else "booked"
-                )
-
-                transaction = {
-                    "accountId": account["id"],
-                    "transactionId": transaction_id,
-                    "internalTransactionId": internal_transaction_id,
-                    "institutionId": account["institution_id"],
-                    "iban": account["iban"],
-                    "transactionDate": transaction_date.isoformat(),
-                    "description": description,
-                    "transactionValue": amount,
-                    "transactionCurrency": account["currency"],
-                    "transactionStatus": status,
-                    "rawTransaction": raw_transaction,
-                }
-
-                account_transactions.append(transaction)
-                current_balance += amount
-
-            # Sort transactions by date for realistic ordering
-            account_transactions.sort(key=lambda x: x["transactionDate"])
-            transactions.extend(account_transactions)
-
-        return transactions
-
-    def generate_balances(self, accounts: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
-        """Generate sample balances for accounts."""
-        balances = []
-
-        for account in accounts:
-            # Calculate balance from transactions (simplified)
-            base_balance = random.uniform(500, 2000)
-
-            balance_types = ["interimAvailable", "closingBooked", "authorised"]
-
-            for balance_type in balance_types:
-                # Add some variation to balance types
-                variation = (
-                    random.uniform(-50, 50) if balance_type != "interimAvailable" else 0
-                )
-                balance_amount = base_balance + variation
-
-                balance = {
-                    "account_id": account["id"],
-                    "bank": account["institution_id"],
-                    "status": account["status"],
-                    "iban": account["iban"],
-                    "amount": round(balance_amount, 2),
-                    "currency": account["currency"],
-                    "type": balance_type,
-                    "timestamp": datetime.now().isoformat(),
-                }
-                balances.append(balance)
-
-        return balances
-
-    def insert_data(
-        self,
-        accounts: List[Dict[str, Any]],
-        transactions: List[Dict[str, Any]],
-        balances: List[Dict[str, Any]],
-    ):
-        """Insert generated data into the database."""
-        conn = sqlite3.connect(str(self.db_path))
-        cursor = conn.cursor()
-
-        # Insert accounts
-        for account in accounts:
-            cursor.execute(
-                """
-                INSERT OR REPLACE INTO accounts
-                (id, institution_id, status, iban, name, currency, created, last_accessed, last_updated, display_name)
-                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
-            """,
-                (
-                    account["id"],
-                    account["institution_id"],
-                    account["status"],
-                    account["iban"],
-                    account["name"],
-                    account["currency"],
-                    account["created"],
-                    account["last_accessed"],
-                    account["last_updated"],
-                    None,  # display_name is initially None for sample data
-                ),
-            )
-
-        # Insert transactions
-        for transaction in transactions:
-            cursor.execute(
-                """
-                INSERT OR REPLACE INTO transactions
-                (accountId, transactionId, internalTransactionId, institutionId, iban,
-                 transactionDate, description, transactionValue, transactionCurrency,
-                 transactionStatus, rawTransaction)
-                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
-            """,
-                (
-                    transaction["accountId"],
-                    transaction["transactionId"],
-                    transaction["internalTransactionId"],
-                    transaction["institutionId"],
-                    transaction["iban"],
-                    transaction["transactionDate"],
-                    transaction["description"],
-                    transaction["transactionValue"],
-                    transaction["transactionCurrency"],
-                    transaction["transactionStatus"],
-                    json.dumps(transaction["rawTransaction"]),
-                ),
-            )
-
-        # Insert balances
-        for balance in balances:
-            cursor.execute(
-                """
-                INSERT INTO balances
-                (account_id, bank, status, iban, amount, currency, type, timestamp)
-                VALUES (?, ?, ?, ?, ?, ?, ?, ?)
-            """,
-                (
-                    balance["account_id"],
-                    balance["bank"],
-                    balance["status"],
-                    balance["iban"],
-                    balance["amount"],
-                    balance["currency"],
-                    balance["type"],
-                    balance["timestamp"],
-                ),
-            )
-
-        conn.commit()
-        conn.close()
-
-    def generate_sample_database(
-        self, num_accounts: int = 3, num_transactions_per_account: int = 50
-    ):
-        """Generate complete sample database."""
-        click.echo(f"🗄️  Creating sample database at: {self.db_path}")
-
-        self.ensure_database_dir()
-        self.create_tables()
-
-        click.echo(f"👥 Generating {num_accounts} sample accounts...")
-        accounts = self.generate_accounts(num_accounts)
-
-        click.echo(
-            f"💳 Generating {num_transactions_per_account} transactions per account..."
-        )
-        transactions = self.generate_transactions(
-            accounts, num_transactions_per_account
-        )
-
-        click.echo("💰 Generating account balances...")
-        balances = self.generate_balances(accounts)
-
-        click.echo("💾 Inserting data into database...")
-        self.insert_data(accounts, transactions, balances)
-
-        # Print summary
-        click.echo("\n✅ Sample database created successfully!")
-        click.echo("📊 Summary:")
-        click.echo(f"   - Accounts: {len(accounts)}")
-        click.echo(f"   - Transactions: {len(transactions)}")
-        click.echo(f"   - Balances: {len(balances)}")
-        click.echo(f"   - Database: {self.db_path}")
-
-        # Show account details
-        click.echo("\n📋 Sample accounts:")
-        for account in accounts:
-            institution_name = next(
-                inst["name"]
-                for inst in self.institutions
-                if inst["id"] == account["institution_id"]
-            )
-            click.echo(f"   - {account['id']} ({institution_name}) - {account['iban']}")
-
-
-@click.command()
-@click.option(
-    "--database",
-    type=click.Path(path_type=Path),
-    help="Path to database file (default: uses LEGGEN_DATABASE_PATH or ~/.config/leggen/leggen-dev.db)",
-)
-@click.option(
-    "--accounts",
-    type=int,
-    default=3,
-    help="Number of sample accounts to generate (default: 3)",
-)
-@click.option(
-    "--transactions",
-    type=int,
-    default=50,
-    help="Number of transactions per account (default: 50)",
-)
-@click.option(
-    "--force",
-    is_flag=True,
-    help="Overwrite existing database without confirmation",
-)
-def main(database: Path, accounts: int, transactions: int, force: bool):
-    """Generate a sample database with realistic financial data for testing Leggen."""
-
-    # Determine database path
-    if database:
-        db_path = database
-    else:
-        # Use development database by default to avoid overwriting production data
-        import os
-
-        env_path = os.environ.get("LEGGEN_DATABASE_PATH")
-        if env_path:
-            db_path = Path(env_path)
-        else:
-            # Default to development database in config directory
-            db_path = path_manager.get_config_dir() / "leggen-dev.db"
-
-    # Check if database exists and ask for confirmation
-    if db_path.exists() and not force:
-        click.echo(f"⚠️  Database already exists: {db_path}")
-        if not click.confirm("Do you want to overwrite it?"):
-            click.echo("Aborted.")
-            return
-
-    # Generate the sample database
-    generator = SampleDataGenerator(db_path)
-    generator.generate_sample_database(accounts, transactions)
-
-    # Show usage instructions
-    click.echo("\n🚀 Usage instructions:")
-    click.echo("To use this sample database with leggen commands:")
-    click.echo(f"   export LEGGEN_DATABASE_PATH={db_path}")
-    click.echo("   leggen transactions")
-    click.echo("")
-    click.echo("To use this sample database with leggen server:")
-    click.echo(f"   leggen server --database {db_path}")
-
-
-if __name__ == "__main__":
-    main()

scripts/release.sh

@@ -42,6 +42,9 @@ echo " > Version bumped to $NEXT_VERSION"
 echo "Updating CHANGELOG.md"
 git-cliff --unreleased --tag "$NEXT_VERSION" --prepend CHANGELOG.md > /dev/null
 
+echo "Locking dependencies"
+uv lock
+
 echo " > Commiting changes and adding git tag"
 git add pyproject.toml CHANGELOG.md uv.lock
 git commit -m "chore(ci): Bump version to $NEXT_VERSION"

tests/conftest.py

@@ -1,16 +1,53 @@
 """Pytest configuration and shared fixtures."""
 
 import json
+import os
+import shutil
 import tempfile
 from pathlib import Path
 from unittest.mock import patch
 
 import pytest
+import tomli_w
 from fastapi.testclient import TestClient
 
 from leggen.commands.server import create_app
 from leggen.utils.config import Config
 
+# Create test config before any imports that might load it
+_test_config_dir = tempfile.mkdtemp(prefix="leggen_test_")
+_test_config_path = Path(_test_config_dir) / "config.toml"
+
+# Create minimal test config
+_config_data = {
+    "gocardless": {
+        "key": "test-key",
+        "secret": "test-secret",
+        "url": "https://bankaccountdata.gocardless.com/api/v2",
+    },
+    "database": {"sqlite": True},
+    "scheduler": {"sync": {"enabled": True, "hour": 3, "minute": 0}},
+}
+
+with open(_test_config_path, "wb") as f:
+    tomli_w.dump(_config_data, f)
+
+# Set environment variables to point to test config BEFORE importing the app
+os.environ["LEGGEN_CONFIG_FILE"] = str(_test_config_path)
+
+
+def pytest_configure(config):
+    """Pytest hook called before test collection."""
+    # Ensure test config is set
+    os.environ["LEGGEN_CONFIG_FILE"] = str(_test_config_path)
+
+
+def pytest_unconfigure(config):
+    """Pytest hook called after all tests."""
+    # Cleanup test config directory
+    if Path(_test_config_dir).exists():
+        shutil.rmtree(_test_config_dir)
+
 
 @pytest.fixture
 def temp_config_dir():
@@ -73,9 +110,14 @@ def mock_auth_token(temp_config_dir):
 
 
 @pytest.fixture
-def fastapi_app():
+def fastapi_app(mock_db_path):
     """Create FastAPI test application."""
-    return create_app()
+    # Patch the database path for the app
+    with patch(
+        "leggen.utils.paths.path_manager.get_database_path", return_value=mock_db_path
+    ):
+        app = create_app()
+        yield app
 
 
 @pytest.fixture
@@ -84,6 +126,38 @@ def api_client(fastapi_app):
     return TestClient(fastapi_app)
 
 
+@pytest.fixture
+def mock_account_repo():
+    """Create mock AccountRepository for testing."""
+    from unittest.mock import MagicMock
+
+    return MagicMock()
+
+
+@pytest.fixture
+def mock_balance_repo():
+    """Create mock BalanceRepository for testing."""
+    from unittest.mock import MagicMock
+
+    return MagicMock()
+
+
+@pytest.fixture
+def mock_transaction_repo():
+    """Create mock TransactionRepository for testing."""
+    from unittest.mock import MagicMock
+
+    return MagicMock()
+
+
+@pytest.fixture
+def mock_analytics_proc():
+    """Create mock AnalyticsProcessor for testing."""
+    from unittest.mock import MagicMock
+
+    return MagicMock()
+
+
 @pytest.fixture
 def mock_db_path(temp_db_path):
     """Mock the database path to use temporary database for testing."""

tests/unit/test_analytics_fix.py

@@ -1,13 +1,13 @@
 """Tests for analytics fixes to ensure all transactions are used in statistics."""
 
 from datetime import datetime, timedelta
-from unittest.mock import AsyncMock, Mock, patch
+from unittest.mock import Mock
 
 import pytest
 from fastapi.testclient import TestClient
 
+from leggen.api.dependencies import get_transaction_repository
 from leggen.commands.server import create_app
-from leggen.services.database_service import DatabaseService
 
 
 class TestAnalyticsFix:
@@ -19,11 +19,11 @@ class TestAnalyticsFix:
         return TestClient(app)
 
     @pytest.fixture
-    def mock_database_service(self):
-        return Mock(spec=DatabaseService)
+    def mock_transaction_repo(self):
+        return Mock()
 
     @pytest.mark.asyncio
-    async def test_transaction_stats_uses_all_transactions(self, mock_database_service):
+    async def test_transaction_stats_uses_all_transactions(self, mock_transaction_repo):
         """Test that transaction stats endpoint uses all transactions (not limited to 100)"""
         # Mock data for 600 transactions (simulating the issue)
         mock_transactions = []
@@ -42,54 +42,50 @@ class TestAnalyticsFix:
                 }
             )
 
-        mock_database_service.get_transactions_from_db = AsyncMock(
-            return_value=mock_transactions
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+
+        app = create_app()
+        app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+        client = TestClient(app)
+
+        response = client.get("/api/v1/transactions/stats?days=365")
+
+        assert response.status_code == 200
+        data = response.json()
+
+        # Verify that limit=None was passed to get all transactions
+        mock_transaction_repo.get_transactions.assert_called_once()
+        call_args = mock_transaction_repo.get_transactions.call_args
+        assert call_args.kwargs.get("limit") is None, (
+            "Stats endpoint should pass limit=None to get all transactions"
         )
 
-        # Test that the endpoint calls get_transactions_from_db with limit=None
-        with patch(
-            "leggen.api.routes.transactions.database_service", mock_database_service
-        ):
-            app = create_app()
-            client = TestClient(app)
+        # Verify that the response contains stats for all 600 transactions
+        stats = data
+        assert stats["total_transactions"] == 600, (
+            "Should process all 600 transactions, not just 100"
+        )
 
-            response = client.get("/api/v1/transactions/stats?days=365")
+        # Verify calculations are correct for all transactions
+        expected_income = sum(
+            txn["transactionValue"]
+            for txn in mock_transactions
+            if txn["transactionValue"] > 0
+        )
+        expected_expenses = sum(
+            abs(txn["transactionValue"])
+            for txn in mock_transactions
+            if txn["transactionValue"] < 0
+        )
 
-            assert response.status_code == 200
-            data = response.json()
-
-            # Verify that limit=None was passed to get all transactions
-            mock_database_service.get_transactions_from_db.assert_called_once()
-            call_args = mock_database_service.get_transactions_from_db.call_args
-            assert call_args.kwargs.get("limit") is None, (
-                "Stats endpoint should pass limit=None to get all transactions"
-            )
-
-            # Verify that the response contains stats for all 600 transactions
-            assert data["success"] is True
-            stats = data["data"]
-            assert stats["total_transactions"] == 600, (
-                "Should process all 600 transactions, not just 100"
-            )
-
-            # Verify calculations are correct for all transactions
-            expected_income = sum(
-                txn["transactionValue"]
-                for txn in mock_transactions
-                if txn["transactionValue"] > 0
-            )
-            expected_expenses = sum(
-                abs(txn["transactionValue"])
-                for txn in mock_transactions
-                if txn["transactionValue"] < 0
-            )
-
-            assert stats["total_income"] == expected_income
-            assert stats["total_expenses"] == expected_expenses
+        assert stats["total_income"] == expected_income
+        assert stats["total_expenses"] == expected_expenses
 
     @pytest.mark.asyncio
     async def test_analytics_endpoint_returns_all_transactions(
-        self, mock_database_service
+        self, mock_transaction_repo
     ):
         """Test that the new analytics endpoint returns all transactions without pagination"""
         # Mock data for 600 transactions
@@ -109,31 +105,28 @@ class TestAnalyticsFix:
                 }
             )
 
-        mock_database_service.get_transactions_from_db = AsyncMock(
-            return_value=mock_transactions
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+
+        app = create_app()
+        app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+        client = TestClient(app)
+
+        response = client.get("/api/v1/transactions/analytics?days=365")
+
+        assert response.status_code == 200
+        data = response.json()
+
+        # Verify that limit=None was passed to get all transactions
+        mock_transaction_repo.get_transactions.assert_called_once()
+        call_args = mock_transaction_repo.get_transactions.call_args
+        assert call_args.kwargs.get("limit") is None, (
+            "Analytics endpoint should pass limit=None"
         )
 
-        with patch(
-            "leggen.api.routes.transactions.database_service", mock_database_service
-        ):
-            app = create_app()
-            client = TestClient(app)
-
-            response = client.get("/api/v1/transactions/analytics?days=365")
-
-            assert response.status_code == 200
-            data = response.json()
-
-            # Verify that limit=None was passed to get all transactions
-            mock_database_service.get_transactions_from_db.assert_called_once()
-            call_args = mock_database_service.get_transactions_from_db.call_args
-            assert call_args.kwargs.get("limit") is None, (
-                "Analytics endpoint should pass limit=None"
-            )
-
-            # Verify that all 600 transactions are returned
-            assert data["success"] is True
-            transactions_data = data["data"]
-            assert len(transactions_data) == 600, (
-                "Analytics endpoint should return all 600 transactions"
-            )
+        # Verify that all 600 transactions are returned
+        transactions_data = data
+        assert len(transactions_data) == 600, (
+            "Analytics endpoint should return all 600 transactions"
+        )

tests/unit/test_api_accounts.py

@@ -4,6 +4,12 @@ from unittest.mock import patch
 
 import pytest
 
+from leggen.api.dependencies import (
+    get_account_repository,
+    get_balance_repository,
+    get_transaction_repository,
+)
+
 
 @pytest.mark.api
 class TestAccountsAPI:
@@ -11,11 +17,14 @@ class TestAccountsAPI:
 
     def test_get_all_accounts_success(
         self,
+        fastapi_app,
         api_client,
         mock_config,
         mock_auth_token,
         sample_account_data,
         mock_db_path,
+        mock_account_repo,
+        mock_balance_repo,
     ):
         """Test successful retrieval of all accounts from database."""
         mock_accounts = [
@@ -45,24 +54,25 @@ class TestAccountsAPI:
             }
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_accounts_from_db",
-                return_value=mock_accounts,
-            ),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_balances_from_db",
-                return_value=mock_balances,
-            ),
-        ):
+        mock_account_repo.get_accounts.return_value = mock_accounts
+        mock_balance_repo.get_balances.return_value = mock_balances
+
+        fastapi_app.dependency_overrides[get_account_repository] = (
+            lambda: mock_account_repo
+        )
+        fastapi_app.dependency_overrides[get_balance_repository] = (
+            lambda: mock_balance_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/accounts")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert len(data["data"]) == 1
-        account = data["data"][0]
+        assert len(data) == 1
+        account = data[0]
         assert account["id"] == "test-account-123"
         assert account["institution_id"] == "REVOLUT_REVOLT21"
         assert len(account["balances"]) == 1
@@ -70,11 +80,14 @@ class TestAccountsAPI:
 
     def test_get_account_details_success(
         self,
+        fastapi_app,
         api_client,
         mock_config,
         mock_auth_token,
         sample_account_data,
         mock_db_path,
+        mock_account_repo,
+        mock_balance_repo,
     ):
         """Test successful retrieval of specific account details from database."""
         mock_account = {
@@ -102,29 +115,35 @@ class TestAccountsAPI:
             }
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_account_details_from_db",
-                return_value=mock_account,
-            ),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_balances_from_db",
-                return_value=mock_balances,
-            ),
-        ):
+        mock_account_repo.get_account.return_value = mock_account
+        mock_balance_repo.get_balances.return_value = mock_balances
+
+        fastapi_app.dependency_overrides[get_account_repository] = (
+            lambda: mock_account_repo
+        )
+        fastapi_app.dependency_overrides[get_balance_repository] = (
+            lambda: mock_balance_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/accounts/test-account-123")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        account = data["data"]
-        assert account["id"] == "test-account-123"
-        assert account["iban"] == "LT313250081177977789"
-        assert len(account["balances"]) == 1
+        assert data["id"] == "test-account-123"
+        assert data["iban"] == "LT313250081177977789"
+        assert len(data["balances"]) == 1
 
     def test_get_account_balances_success(
-        self, api_client, mock_config, mock_auth_token, mock_db_path
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_db_path,
+        mock_balance_repo,
     ):
         """Test successful retrieval of account balances from database."""
         mock_balances = [
@@ -152,31 +171,34 @@ class TestAccountsAPI:
             },
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_balances_from_db",
-                return_value=mock_balances,
-            ),
-        ):
+        mock_balance_repo.get_balances.return_value = mock_balances
+
+        fastapi_app.dependency_overrides[get_balance_repository] = (
+            lambda: mock_balance_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/accounts/test-account-123/balances")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert len(data["data"]) == 2
-        assert data["data"][0]["amount"] == 1000.00
-        assert data["data"][0]["currency"] == "EUR"
-        assert data["data"][0]["balance_type"] == "interimAvailable"
+        assert len(data) == 2
+        assert data[0]["amount"] == 1000.00
+        assert data[0]["currency"] == "EUR"
+        assert data[0]["balance_type"] == "interimAvailable"
 
     def test_get_account_transactions_success(
         self,
+        fastapi_app,
         api_client,
         mock_config,
         mock_auth_token,
         sample_account_data,
         sample_transaction_data,
         mock_db_path,
+        mock_transaction_repo,
     ):
         """Test successful retrieval of account transactions from database."""
         mock_transactions = [
@@ -195,27 +217,24 @@ class TestAccountsAPI:
             }
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_transactions_from_db",
-                return_value=mock_transactions,
-            ),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_transaction_count_from_db",
-                return_value=1,
-            ),
-        ):
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get(
                 "/api/v1/accounts/test-account-123/transactions?summary_only=true"
             )
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert len(data["data"]) == 1
+        assert len(data) == 1
 
-        transaction = data["data"][0]
+        transaction = data[0]
         assert transaction["internal_transaction_id"] == "txn-123"
         assert transaction["amount"] == -10.50
         assert transaction["currency"] == "EUR"
@@ -223,12 +242,14 @@ class TestAccountsAPI:
 
     def test_get_account_transactions_full_details(
         self,
+        fastapi_app,
         api_client,
         mock_config,
         mock_auth_token,
         sample_account_data,
         sample_transaction_data,
         mock_db_path,
+        mock_transaction_repo,
     ):
         """Test retrieval of full transaction details from database."""
         mock_transactions = [
@@ -247,49 +268,60 @@ class TestAccountsAPI:
             }
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_transactions_from_db",
-                return_value=mock_transactions,
-            ),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_transaction_count_from_db",
-                return_value=1,
-            ),
-        ):
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get(
                 "/api/v1/accounts/test-account-123/transactions?summary_only=false"
             )
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert len(data["data"]) == 1
+        assert len(data) == 1
 
-        transaction = data["data"][0]
+        transaction = data[0]
         assert transaction["internal_transaction_id"] == "txn-123"
         assert transaction["institution_id"] == "REVOLUT_REVOLT21"
         assert transaction["iban"] == "LT313250081177977789"
         assert "raw_transaction" in transaction
 
     def test_get_account_not_found(
-        self, api_client, mock_config, mock_auth_token, mock_db_path
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_db_path,
+        mock_account_repo,
     ):
         """Test handling of non-existent account."""
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_account_details_from_db",
-                return_value=None,
-            ),
-        ):
+        mock_account_repo.get_account.return_value = None
+
+        fastapi_app.dependency_overrides[get_account_repository] = (
+            lambda: mock_account_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/accounts/nonexistent")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 404
 
     def test_update_account_display_name_success(
-        self, api_client, mock_config, mock_auth_token, mock_db_path
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_db_path,
+        mock_account_repo,
     ):
         """Test successful update of account display name."""
         mock_account = {
@@ -303,42 +335,48 @@ class TestAccountsAPI:
             "last_accessed": "2025-09-01T09:30:00Z",
         }
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_account_details_from_db",
-                return_value=mock_account,
-            ),
-            patch(
-                "leggen.api.routes.accounts.database_service.persist_account_details",
-                return_value=None,
-            ),
-        ):
+        mock_account_repo.get_account.return_value = mock_account
+        mock_account_repo.persist.return_value = mock_account
+
+        fastapi_app.dependency_overrides[get_account_repository] = (
+            lambda: mock_account_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.put(
                 "/api/v1/accounts/test-account-123",
                 json={"display_name": "My Custom Account Name"},
             )
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert data["data"]["id"] == "test-account-123"
-        assert data["data"]["display_name"] == "My Custom Account Name"
+        assert data["id"] == "test-account-123"
+        assert data["display_name"] == "My Custom Account Name"
 
     def test_update_account_not_found(
-        self, api_client, mock_config, mock_auth_token, mock_db_path
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_db_path,
+        mock_account_repo,
     ):
         """Test updating non-existent account."""
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.accounts.database_service.get_account_details_from_db",
-                return_value=None,
-            ),
-        ):
+        mock_account_repo.get_account.return_value = None
+
+        fastapi_app.dependency_overrides[get_account_repository] = (
+            lambda: mock_account_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.put(
                 "/api/v1/accounts/nonexistent",
                 json={"display_name": "New Name"},
             )
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 404

tests/unit/test_api_backup.py

@@ -0,0 +1,293 @@
+"""Tests for backup API endpoints."""
+
+from unittest.mock import patch
+
+import pytest
+
+
+@pytest.mark.api
+class TestBackupAPI:
+    """Test backup-related API endpoints."""
+
+    def test_get_backup_settings_no_config(self, api_client, mock_config):
+        """Test getting backup settings with no configuration."""
+        # Mock empty backup config by updating the config dict
+        mock_config._config["backup"] = {}
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.get("/api/v1/backup/settings")
+
+        assert response.status_code == 200
+        data = response.json()
+        assert data["s3"] is None
+
+    def test_get_backup_settings_with_s3_config(self, api_client, mock_config):
+        """Test getting backup settings with S3 configuration."""
+        # Mock S3 backup config (with masked credentials)
+        mock_config._config["backup"] = {
+            "s3": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "test-bucket",
+                "region": "us-east-1",
+                "endpoint_url": None,
+                "path_style": False,
+                "enabled": True,
+            }
+        }
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.get("/api/v1/backup/settings")
+
+        assert response.status_code == 200
+        data = response.json()
+        assert data["s3"] is not None
+
+        s3_config = data["s3"]
+        assert s3_config["access_key_id"] == "***"  # Masked
+        assert s3_config["secret_access_key"] == "***"  # Masked
+        assert s3_config["bucket_name"] == "test-bucket"
+        assert s3_config["region"] == "us-east-1"
+        assert s3_config["enabled"] is True
+
+    @patch("leggen.services.backup_service.BackupService.test_connection")
+    def test_update_backup_settings_success(
+        self, mock_test_connection, api_client, mock_config
+    ):
+        """Test successful backup settings update."""
+        mock_test_connection.return_value = True
+        mock_config._config["backup"] = {}
+
+        request_data = {
+            "s3": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "test-bucket",
+                "region": "us-east-1",
+                "endpoint_url": None,
+                "path_style": False,
+                "enabled": True,
+            }
+        }
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.put("/api/v1/backup/settings", json=request_data)
+
+        assert response.status_code == 200
+        data = response.json()
+        assert data["updated"] is True
+
+        # Verify connection test was called
+        mock_test_connection.assert_called_once()
+
+    @patch("leggen.services.backup_service.BackupService.test_connection")
+    def test_update_backup_settings_connection_failure(
+        self, mock_test_connection, api_client, mock_config
+    ):
+        """Test backup settings update with connection test failure."""
+        mock_test_connection.return_value = False
+        mock_config._config["backup"] = {}
+
+        request_data = {
+            "s3": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "invalid-bucket",
+                "region": "us-east-1",
+                "endpoint_url": None,
+                "path_style": False,
+                "enabled": True,
+            }
+        }
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.put("/api/v1/backup/settings", json=request_data)
+
+        assert response.status_code == 400
+        data = response.json()
+        assert "S3 connection test failed" in data["detail"]
+
+    @patch("leggen.services.backup_service.BackupService.test_connection")
+    def test_test_backup_connection_success(self, mock_test_connection, api_client):
+        """Test successful backup connection test."""
+        mock_test_connection.return_value = True
+
+        request_data = {
+            "service": "s3",
+            "config": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "test-bucket",
+                "region": "us-east-1",
+                "endpoint_url": None,
+                "path_style": False,
+                "enabled": True,
+            },
+        }
+
+        response = api_client.post("/api/v1/backup/test", json=request_data)
+
+        assert response.status_code == 200
+        data = response.json()
+        assert data["connected"] is True
+
+        # Verify connection test was called
+        mock_test_connection.assert_called_once()
+
+    @patch("leggen.services.backup_service.BackupService.test_connection")
+    def test_test_backup_connection_failure(self, mock_test_connection, api_client):
+        """Test failed backup connection test."""
+        mock_test_connection.return_value = False
+
+        request_data = {
+            "service": "s3",
+            "config": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "invalid-bucket",
+                "region": "us-east-1",
+                "endpoint_url": None,
+                "path_style": False,
+                "enabled": True,
+            },
+        }
+
+        response = api_client.post("/api/v1/backup/test", json=request_data)
+
+        assert response.status_code == 400
+        data = response.json()
+        assert "S3 connection test failed" in data["detail"]
+
+    def test_test_backup_connection_invalid_service(self, api_client):
+        """Test backup connection test with invalid service."""
+        request_data = {
+            "service": "invalid",
+            "config": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "test-bucket",
+                "region": "us-east-1",
+                "endpoint_url": None,
+                "path_style": False,
+                "enabled": True,
+            },
+        }
+
+        response = api_client.post("/api/v1/backup/test", json=request_data)
+
+        assert response.status_code == 400
+        data = response.json()
+        assert "Only 's3' service is supported" in data["detail"]
+
+    @patch("leggen.services.backup_service.BackupService.list_backups")
+    def test_list_backups_success(self, mock_list_backups, api_client, mock_config):
+        """Test successful backup listing."""
+        mock_list_backups.return_value = [
+            {
+                "key": "leggen_backups/database_backup_20250101_120000.db",
+                "last_modified": "2025-01-01T12:00:00",
+                "size": 1024,
+            },
+            {
+                "key": "leggen_backups/database_backup_20250101_110000.db",
+                "last_modified": "2025-01-01T11:00:00",
+                "size": 512,
+            },
+        ]
+
+        mock_config._config["backup"] = {
+            "s3": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "test-bucket",
+                "region": "us-east-1",
+                "enabled": True,
+            }
+        }
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.get("/api/v1/backup/list")
+
+        assert response.status_code == 200
+        data = response.json()
+        assert len(data) == 2
+        assert data[0]["key"] == "leggen_backups/database_backup_20250101_120000.db"
+
+    def test_list_backups_no_config(self, api_client, mock_config):
+        """Test backup listing with no configuration."""
+        mock_config._config["backup"] = {}
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.get("/api/v1/backup/list")
+
+        assert response.status_code == 200
+        data = response.json()
+        assert data == []
+
+    @patch("leggen.services.backup_service.BackupService.backup_database")
+    @patch("leggen.utils.paths.path_manager.get_database_path")
+    def test_backup_operation_success(
+        self, mock_get_db_path, mock_backup_db, api_client, mock_config
+    ):
+        """Test successful backup operation."""
+        from pathlib import Path
+
+        mock_get_db_path.return_value = Path("/test/database.db")
+        mock_backup_db.return_value = True
+
+        mock_config._config["backup"] = {
+            "s3": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "test-bucket",
+                "region": "us-east-1",
+                "enabled": True,
+            }
+        }
+
+        request_data = {"operation": "backup"}
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.post("/api/v1/backup/operation", json=request_data)
+
+        assert response.status_code == 200
+        data = response.json()
+        assert data["operation"] == "backup"
+        assert data["completed"] is True
+
+        # Verify backup was called
+        mock_backup_db.assert_called_once()
+
+    def test_backup_operation_no_config(self, api_client, mock_config):
+        """Test backup operation with no configuration."""
+        mock_config._config["backup"] = {}
+
+        request_data = {"operation": "backup"}
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.post("/api/v1/backup/operation", json=request_data)
+
+        assert response.status_code == 400
+        data = response.json()
+        assert "S3 backup is not configured" in data["detail"]
+
+    def test_backup_operation_invalid_operation(self, api_client, mock_config):
+        """Test backup operation with invalid operation type."""
+        mock_config._config["backup"] = {
+            "s3": {
+                "access_key_id": "AKIATEST123",
+                "secret_access_key": "secret123",
+                "bucket_name": "test-bucket",
+                "region": "us-east-1",
+                "enabled": True,
+            }
+        }
+
+        request_data = {"operation": "invalid"}
+
+        with patch("leggen.utils.config.config", mock_config):
+            response = api_client.post("/api/v1/backup/operation", json=request_data)
+
+        assert response.status_code == 400
+        data = response.json()
+        assert "Invalid operation" in data["detail"]

tests/unit/test_api_banks.py

@@ -33,10 +33,9 @@ class TestBanksAPI:
 
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert len(data["data"]) == 2
-        assert data["data"][0]["id"] == "REVOLUT_REVOLT21"
-        assert data["data"][1]["id"] == "BANCOBPI_BBPIPTPL"
+        assert len(data) == 2
+        assert data[0]["id"] == "REVOLUT_REVOLT21"
+        assert data[1]["id"] == "BANCOBPI_BBPIPTPL"
 
     @respx.mock
     def test_get_institutions_invalid_country(self, api_client, mock_config):
@@ -92,9 +91,8 @@ class TestBanksAPI:
 
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert data["data"]["id"] == "req-123"
-        assert data["data"]["institution_id"] == "REVOLUT_REVOLT21"
+        assert data["id"] == "req-123"
+        assert data["institution_id"] == "REVOLUT_REVOLT21"
 
     @respx.mock
     def test_get_bank_status_success(self, api_client, mock_config, mock_auth_token):
@@ -128,10 +126,9 @@ class TestBanksAPI:
 
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert len(data["data"]) == 1
-        assert data["data"][0]["bank_id"] == "REVOLUT_REVOLT21"
-        assert data["data"][0]["status_display"] == "LINKED"
+        assert len(data) == 1
+        assert data[0]["bank_id"] == "REVOLUT_REVOLT21"
+        assert data[0]["status_display"] == "LINKED"
 
     def test_get_supported_countries(self, api_client):
         """Test supported countries endpoint."""
@@ -139,11 +136,10 @@ class TestBanksAPI:
 
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
-        assert len(data["data"]) > 0
+        assert len(data) > 0
 
         # Check some expected countries
-        country_codes = [country["code"] for country in data["data"]]
+        country_codes = [country["code"] for country in data]
         assert "PT" in country_codes
         assert "GB" in country_codes
         assert "DE" in country_codes

tests/unit/test_api_transactions.py

@@ -5,13 +5,20 @@ from unittest.mock import patch
 
 import pytest
 
+from leggen.api.dependencies import get_transaction_repository
+
 
 @pytest.mark.api
 class TestTransactionsAPI:
     """Test transaction-related API endpoints."""
 
     def test_get_all_transactions_success(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test successful retrieval of all transactions from database."""
         mock_transactions = [
@@ -43,22 +50,19 @@ class TestTransactionsAPI:
             },
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                return_value=mock_transactions,
-            ),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transaction_count_from_db",
-                return_value=2,
-            ),
-        ):
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+        mock_transaction_repo.get_count.return_value = len(mock_transactions)
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/transactions?summary_only=true")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
         assert len(data["data"]) == 2
 
         # Check first transaction summary
@@ -71,7 +75,12 @@ class TestTransactionsAPI:
         assert transaction["account_id"] == "test-account-123"
 
     def test_get_all_transactions_full_details(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test retrieval of full transaction details from database."""
         mock_transactions = [
@@ -90,22 +99,19 @@ class TestTransactionsAPI:
             }
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                return_value=mock_transactions,
-            ),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transaction_count_from_db",
-                return_value=1,
-            ),
-        ):
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+        mock_transaction_repo.get_count.return_value = len(mock_transactions)
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/transactions?summary_only=false")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
         assert len(data["data"]) == 1
 
         transaction = data["data"][0]
@@ -116,7 +122,12 @@ class TestTransactionsAPI:
         assert "raw_transaction" in transaction
 
     def test_get_transactions_with_filters(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test getting transactions with various filters."""
         mock_transactions = [
@@ -135,17 +146,14 @@ class TestTransactionsAPI:
             }
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                return_value=mock_transactions,
-            ) as mock_get_transactions,
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transaction_count_from_db",
-                return_value=1,
-            ),
-        ):
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+        mock_transaction_repo.get_count.return_value = 1
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get(
                 "/api/v1/transactions?"
                 "account_id=test-account-123&"
@@ -158,12 +166,12 @@ class TestTransactionsAPI:
                 "per_page=10"
             )
 
-        assert response.status_code == 200
-        data = response.json()
-        assert data["success"] is True
+        fastapi_app.dependency_overrides.clear()
 
-        # Verify the database service was called with correct filters
-        mock_get_transactions.assert_called_once_with(
+        assert response.status_code == 200
+
+        # Verify the repository was called with correct filters
+        mock_transaction_repo.get_transactions.assert_called_once_with(
             account_id="test-account-123",
             limit=10,
             offset=10,  # (page-1) * per_page = (2-1) * 10 = 10
@@ -175,48 +183,65 @@ class TestTransactionsAPI:
         )
 
     def test_get_transactions_empty_result(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test getting transactions when database returns empty result."""
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                return_value=[],
-            ),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transaction_count_from_db",
-                return_value=0,
-            ),
-        ):
+        mock_transaction_repo.get_transactions.return_value = []
+        mock_transaction_repo.get_count.return_value = 0
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/transactions")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
         assert len(data["data"]) == 0
-        assert data["pagination"]["total"] == 0
-        assert data["pagination"]["page"] == 1
-        assert data["pagination"]["total_pages"] == 0
+        assert data["total"] == 0
+        assert data["page"] == 1
+        assert data["total_pages"] == 0
 
     def test_get_transactions_database_error(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test handling database error when getting transactions."""
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                side_effect=Exception("Database connection failed"),
-            ),
-        ):
+        mock_transaction_repo.get_transactions.side_effect = Exception(
+            "Database connection failed"
+        )
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/transactions")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 500
         assert "Failed to get transactions" in response.json()["detail"]
 
     def test_get_transaction_stats_success(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test successful retrieval of transaction statistics from database."""
         mock_transactions = [
@@ -243,35 +268,39 @@ class TestTransactionsAPI:
             },
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                return_value=mock_transactions,
-            ),
-        ):
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/transactions/stats?days=30")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
 
-        stats = data["data"]
-        assert stats["period_days"] == 30
-        assert stats["total_transactions"] == 3
-        assert stats["booked_transactions"] == 2
-        assert stats["pending_transactions"] == 1
-        assert stats["total_income"] == 100.00
-        assert stats["total_expenses"] == 35.80  # abs(-10.50) + abs(-25.30)
-        assert stats["net_change"] == 64.20  # 100.00 - 35.80
-        assert stats["accounts_included"] == 2  # Two unique account IDs
+        assert data["period_days"] == 30
+        assert data["total_transactions"] == 3
+        assert data["booked_transactions"] == 2
+        assert data["pending_transactions"] == 1
+        assert data["total_income"] == 100.00
+        assert data["total_expenses"] == 35.80  # abs(-10.50) + abs(-25.30)
+        assert data["net_change"] == 64.20  # 100.00 - 35.80
+        assert data["accounts_included"] == 2  # Two unique account IDs
 
         # Average transaction: ((-10.50) + 100.00 + (-25.30)) / 3 = 64.20 / 3 = 21.4
         expected_avg = round(64.20 / 3, 2)
-        assert stats["average_transaction"] == expected_avg
+        assert data["average_transaction"] == expected_avg
 
     def test_get_transaction_stats_with_account_filter(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test getting transaction stats filtered by account."""
         mock_transactions = [
@@ -284,67 +313,88 @@ class TestTransactionsAPI:
             }
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                return_value=mock_transactions,
-            ) as mock_get_transactions,
-        ):
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get(
                 "/api/v1/transactions/stats?account_id=test-account-123"
             )
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
 
-        # Verify the database service was called with account filter
-        mock_get_transactions.assert_called_once()
-        call_kwargs = mock_get_transactions.call_args.kwargs
+        # Verify the repository was called with account filter
+        mock_transaction_repo.get_transactions.assert_called_once()
+        call_kwargs = mock_transaction_repo.get_transactions.call_args.kwargs
         assert call_kwargs["account_id"] == "test-account-123"
 
     def test_get_transaction_stats_empty_result(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test getting stats when no transactions match criteria."""
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                return_value=[],
-            ),
-        ):
+        mock_transaction_repo.get_transactions.return_value = []
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/transactions/stats")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["success"] is True
 
-        stats = data["data"]
-        assert stats["total_transactions"] == 0
-        assert stats["total_income"] == 0.0
-        assert stats["total_expenses"] == 0.0
-        assert stats["net_change"] == 0.0
-        assert stats["average_transaction"] == 0  # Division by zero handled
-        assert stats["accounts_included"] == 0
+        assert data["total_transactions"] == 0
+        assert data["total_income"] == 0.0
+        assert data["total_expenses"] == 0.0
+        assert data["net_change"] == 0.0
+        assert data["average_transaction"] == 0  # Division by zero handled
+        assert data["accounts_included"] == 0
 
     def test_get_transaction_stats_database_error(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test handling database error when getting stats."""
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                side_effect=Exception("Database connection failed"),
-            ),
-        ):
+        mock_transaction_repo.get_transactions.side_effect = Exception(
+            "Database connection failed"
+        )
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/transactions/stats")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 500
         assert "Failed to get transaction stats" in response.json()["detail"]
 
     def test_get_transaction_stats_custom_period(
-        self, api_client, mock_config, mock_auth_token
+        self,
+        fastapi_app,
+        api_client,
+        mock_config,
+        mock_auth_token,
+        mock_transaction_repo,
     ):
         """Test getting transaction stats for custom time period."""
         mock_transactions = [
@@ -357,21 +407,23 @@ class TestTransactionsAPI:
             }
         ]
 
-        with (
-            patch("leggen.utils.config.config", mock_config),
-            patch(
-                "leggen.api.routes.transactions.database_service.get_transactions_from_db",
-                return_value=mock_transactions,
-            ) as mock_get_transactions,
-        ):
+        mock_transaction_repo.get_transactions.return_value = mock_transactions
+
+        fastapi_app.dependency_overrides[get_transaction_repository] = (
+            lambda: mock_transaction_repo
+        )
+
+        with patch("leggen.utils.config.config", mock_config):
             response = api_client.get("/api/v1/transactions/stats?days=7")
 
+        fastapi_app.dependency_overrides.clear()
+
         assert response.status_code == 200
         data = response.json()
-        assert data["data"]["period_days"] == 7
+        assert data["period_days"] == 7
 
         # Verify the date range was calculated correctly for 7 days
-        mock_get_transactions.assert_called_once()
-        call_kwargs = mock_get_transactions.call_args.kwargs
+        mock_transaction_repo.get_transactions.assert_called_once()
+        call_kwargs = mock_transaction_repo.get_transactions.call_args.kwargs
         assert "date_from" in call_kwargs
         assert "date_to" in call_kwargs

tests/unit/test_backup_service.py

@@ -0,0 +1,226 @@
+"""Tests for backup service functionality."""
+
+import tempfile
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+import pytest
+from botocore.exceptions import ClientError, NoCredentialsError
+
+from leggen.models.config import S3BackupConfig
+from leggen.services.backup_service import BackupService
+
+
+@pytest.mark.unit
+class TestBackupService:
+    """Test backup service functionality."""
+
+    def test_backup_service_initialization(self):
+        """Test backup service can be initialized."""
+        service = BackupService()
+        assert service.s3_config is None
+        assert service._s3_client is None
+
+    def test_backup_service_with_config(self):
+        """Test backup service initialization with config."""
+        s3_config = S3BackupConfig(
+            access_key_id="test-key",
+            secret_access_key="test-secret",
+            bucket_name="test-bucket",
+            region="us-east-1",
+        )
+        service = BackupService(s3_config)
+        assert service.s3_config == s3_config
+
+    @pytest.mark.asyncio
+    async def test_test_connection_success(self):
+        """Test successful S3 connection test."""
+        s3_config = S3BackupConfig(
+            access_key_id="test-key",
+            secret_access_key="test-secret",
+            bucket_name="test-bucket",
+            region="us-east-1",
+        )
+
+        service = BackupService()
+
+        # Mock S3 client
+        with patch("boto3.Session") as mock_session:
+            mock_client = MagicMock()
+            mock_session.return_value.client.return_value = mock_client
+
+            # Mock successful list_objects_v2 call
+            mock_client.list_objects_v2.return_value = {"Contents": []}
+
+            result = await service.test_connection(s3_config)
+            assert result is True
+
+            # Verify the client was called correctly
+            mock_client.list_objects_v2.assert_called_once_with(
+                Bucket="test-bucket", MaxKeys=1
+            )
+
+    @pytest.mark.asyncio
+    async def test_test_connection_no_credentials(self):
+        """Test S3 connection test with no credentials."""
+        s3_config = S3BackupConfig(
+            access_key_id="test-key",
+            secret_access_key="test-secret",
+            bucket_name="test-bucket",
+            region="us-east-1",
+        )
+
+        service = BackupService()
+
+        # Mock S3 client to raise NoCredentialsError
+        with patch("boto3.Session") as mock_session:
+            mock_client = MagicMock()
+            mock_session.return_value.client.return_value = mock_client
+            mock_client.list_objects_v2.side_effect = NoCredentialsError()
+
+            result = await service.test_connection(s3_config)
+            assert result is False
+
+    @pytest.mark.asyncio
+    async def test_test_connection_client_error(self):
+        """Test S3 connection test with client error."""
+        s3_config = S3BackupConfig(
+            access_key_id="test-key",
+            secret_access_key="test-secret",
+            bucket_name="test-bucket",
+            region="us-east-1",
+        )
+
+        service = BackupService()
+
+        # Mock S3 client to raise ClientError
+        with patch("boto3.Session") as mock_session:
+            mock_client = MagicMock()
+            mock_session.return_value.client.return_value = mock_client
+            error_response = {
+                "Error": {"Code": "NoSuchBucket", "Message": "Bucket not found"}
+            }
+            mock_client.list_objects_v2.side_effect = ClientError(
+                error_response, "ListObjectsV2"
+            )
+
+            result = await service.test_connection(s3_config)
+            assert result is False
+
+    @pytest.mark.asyncio
+    async def test_backup_database_no_config(self):
+        """Test backup database with no configuration."""
+        service = BackupService()
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            db_path = Path(tmpdir) / "test.db"
+            db_path.write_text("test database content")
+
+            result = await service.backup_database(db_path)
+            assert result is False
+
+    @pytest.mark.asyncio
+    async def test_backup_database_disabled(self):
+        """Test backup database with disabled configuration."""
+        s3_config = S3BackupConfig(
+            access_key_id="test-key",
+            secret_access_key="test-secret",
+            bucket_name="test-bucket",
+            region="us-east-1",
+            enabled=False,
+        )
+        service = BackupService(s3_config)
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            db_path = Path(tmpdir) / "test.db"
+            db_path.write_text("test database content")
+
+            result = await service.backup_database(db_path)
+            assert result is False
+
+    @pytest.mark.asyncio
+    async def test_backup_database_file_not_found(self):
+        """Test backup database with non-existent file."""
+        s3_config = S3BackupConfig(
+            access_key_id="test-key",
+            secret_access_key="test-secret",
+            bucket_name="test-bucket",
+            region="us-east-1",
+        )
+        service = BackupService(s3_config)
+
+        non_existent_path = Path("/non/existent/path.db")
+        result = await service.backup_database(non_existent_path)
+        assert result is False
+
+    @pytest.mark.asyncio
+    async def test_backup_database_success(self):
+        """Test successful database backup."""
+        s3_config = S3BackupConfig(
+            access_key_id="test-key",
+            secret_access_key="test-secret",
+            bucket_name="test-bucket",
+            region="us-east-1",
+        )
+        service = BackupService(s3_config)
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            db_path = Path(tmpdir) / "test.db"
+            db_path.write_text("test database content")
+
+            # Mock S3 client
+            with patch("boto3.Session") as mock_session:
+                mock_client = MagicMock()
+                mock_session.return_value.client.return_value = mock_client
+
+                result = await service.backup_database(db_path)
+                assert result is True
+
+                # Verify upload_file was called
+                mock_client.upload_file.assert_called_once()
+                args = mock_client.upload_file.call_args[0]
+                assert args[0] == str(db_path)  # source file
+                assert args[1] == "test-bucket"  # bucket name
+                assert args[2].startswith("leggen_backups/database_backup_")  # key
+
+    @pytest.mark.asyncio
+    async def test_list_backups_success(self):
+        """Test successful backup listing."""
+        s3_config = S3BackupConfig(
+            access_key_id="test-key",
+            secret_access_key="test-secret",
+            bucket_name="test-bucket",
+            region="us-east-1",
+        )
+        service = BackupService(s3_config)
+
+        # Mock S3 client response
+        with patch("boto3.Session") as mock_session:
+            mock_client = MagicMock()
+            mock_session.return_value.client.return_value = mock_client
+
+            from datetime import datetime
+
+            mock_response = {
+                "Contents": [
+                    {
+                        "Key": "leggen_backups/database_backup_20250101_120000.db",
+                        "LastModified": datetime(2025, 1, 1, 12, 0, 0),
+                        "Size": 1024,
+                    },
+                    {
+                        "Key": "leggen_backups/database_backup_20250101_130000.db",
+                        "LastModified": datetime(2025, 1, 1, 13, 0, 0),
+                        "Size": 2048,
+                    },
+                ]
+            }
+            mock_client.list_objects_v2.return_value = mock_response
+
+            backups = await service.list_backups()
+            assert len(backups) == 2
+
+            # Check that backups are sorted by last modified (newest first)
+            assert backups[0]["last_modified"] > backups[1]["last_modified"]
+            assert backups[0]["size"] == 2048
+            assert backups[1]["size"] == 1024

tests/unit/test_configurable_paths.py

@@ -120,12 +120,10 @@ class TestConfigurablePaths:
                 "iban": "TEST_IBAN",
             }
 
-            # Use the internal balance persistence method since the test needs direct database access
+            # Use the public balance persistence method
             import asyncio
 
-            asyncio.run(
-                database_service._persist_balance_sqlite("test-account", balance_data)
-            )
+            asyncio.run(database_service.persist_balance("test-account", balance_data))
 
             # Retrieve balances
             balances = asyncio.run(

tests/unit/test_database_service.py

@@ -85,7 +85,7 @@ class TestDatabaseService:
     ):
         """Test successful retrieval of transactions from database."""
         with patch.object(
-            database_service, "_get_transactions"
+            database_service.transactions, "get_transactions"
         ) as mock_get_transactions:
             mock_get_transactions.return_value = sample_transactions_db_format
 
@@ -111,7 +111,7 @@ class TestDatabaseService:
     ):
         """Test retrieving transactions with filters."""
         with patch.object(
-            database_service, "_get_transactions"
+            database_service.transactions, "get_transactions"
         ) as mock_get_transactions:
             mock_get_transactions.return_value = sample_transactions_db_format
 
@@ -149,7 +149,7 @@ class TestDatabaseService:
     async def test_get_transactions_from_db_error(self, database_service):
         """Test handling error when getting transactions."""
         with patch.object(
-            database_service, "_get_transactions"
+            database_service.transactions, "get_transactions"
         ) as mock_get_transactions:
             mock_get_transactions.side_effect = Exception("Database error")
 
@@ -159,7 +159,7 @@ class TestDatabaseService:
 
     async def test_get_transaction_count_from_db_success(self, database_service):
         """Test successful retrieval of transaction count."""
-        with patch.object(database_service, "_get_transaction_count") as mock_get_count:
+        with patch.object(database_service.transactions, "get_count") as mock_get_count:
             mock_get_count.return_value = 42
 
             result = await database_service.get_transaction_count_from_db(
@@ -167,11 +167,18 @@ class TestDatabaseService:
             )
 
             assert result == 42
-            mock_get_count.assert_called_once_with(account_id="test-account-123")
+            mock_get_count.assert_called_once_with(
+                account_id="test-account-123",
+                date_from=None,
+                date_to=None,
+                min_amount=None,
+                max_amount=None,
+                search=None,
+            )
 
     async def test_get_transaction_count_from_db_with_filters(self, database_service):
         """Test getting transaction count with filters."""
-        with patch.object(database_service, "_get_transaction_count") as mock_get_count:
+        with patch.object(database_service.transactions, "get_count") as mock_get_count:
             mock_get_count.return_value = 15
 
             result = await database_service.get_transaction_count_from_db(
@@ -185,7 +192,9 @@ class TestDatabaseService:
             mock_get_count.assert_called_once_with(
                 account_id="test-account-123",
                 date_from="2025-09-01",
+                date_to=None,
                 min_amount=-100.0,
+                max_amount=None,
                 search="Coffee",
             )
 
@@ -201,7 +210,7 @@ class TestDatabaseService:
 
     async def test_get_transaction_count_from_db_error(self, database_service):
         """Test handling error when getting count."""
-        with patch.object(database_service, "_get_transaction_count") as mock_get_count:
+        with patch.object(database_service.transactions, "get_count") as mock_get_count:
             mock_get_count.side_effect = Exception("Database error")
 
             result = await database_service.get_transaction_count_from_db()
@@ -212,7 +221,9 @@ class TestDatabaseService:
         self, database_service, sample_balances_db_format
     ):
         """Test successful retrieval of balances from database."""
-        with patch.object(database_service, "_get_balances") as mock_get_balances:
+        with patch.object(
+            database_service.balances, "get_balances"
+        ) as mock_get_balances:
             mock_get_balances.return_value = sample_balances_db_format
 
             result = await database_service.get_balances_from_db(
@@ -234,7 +245,9 @@ class TestDatabaseService:
 
     async def test_get_balances_from_db_error(self, database_service):
         """Test handling error when getting balances."""
-        with patch.object(database_service, "_get_balances") as mock_get_balances:
+        with patch.object(
+            database_service.balances, "get_balances"
+        ) as mock_get_balances:
             mock_get_balances.side_effect = Exception("Database error")
 
             result = await database_service.get_balances_from_db()
@@ -249,7 +262,9 @@ class TestDatabaseService:
             "iban": "LT313250081177977789",
         }
 
-        with patch.object(database_service, "_get_account_summary") as mock_get_summary:
+        with patch.object(
+            database_service.transactions, "get_account_summary"
+        ) as mock_get_summary:
             mock_get_summary.return_value = mock_summary
 
             result = await database_service.get_account_summary_from_db(
@@ -269,7 +284,9 @@ class TestDatabaseService:
 
     async def test_get_account_summary_from_db_error(self, database_service):
         """Test handling error when getting summary."""
-        with patch.object(database_service, "_get_account_summary") as mock_get_summary:
+        with patch.object(
+            database_service.transactions, "get_account_summary"
+        ) as mock_get_summary:
             mock_get_summary.side_effect = Exception("Database error")
 
             result = await database_service.get_account_summary_from_db(
@@ -291,87 +308,87 @@ class TestDatabaseService:
             ],
         }
 
-        with patch("sqlite3.connect") as mock_connect:
-            mock_conn = mock_connect.return_value
-            mock_cursor = mock_conn.cursor.return_value
+        with (
+            patch.object(database_service.balances, "persist") as mock_persist,
+            patch.object(
+                database_service.balance_transformer, "transform_to_database_format"
+            ) as mock_transform,
+        ):
+            mock_transform.return_value = [
+                (
+                    "test-account-123",
+                    "REVOLUT_REVOLT21",
+                    "active",
+                    "LT313250081177977789",
+                    1000.0,
+                    "EUR",
+                    "interimAvailable",
+                    "2025-09-01T10:00:00",
+                )
+            ]
 
-            await database_service._persist_balance_sqlite(
-                "test-account-123", balance_data
-            )
+            await database_service.persist_balance("test-account-123", balance_data)
 
-            # Verify database operations
-            mock_connect.assert_called()
-            mock_cursor.execute.assert_called()  # Table creation and insert
-            mock_conn.commit.assert_called_once()
-            mock_conn.close.assert_called_once()
+            # Verify transformation and persistence were called
+            mock_transform.assert_called_once_with("test-account-123", balance_data)
+            mock_persist.assert_called_once()
 
     async def test_persist_balance_sqlite_error(self, database_service):
         """Test handling error during balance persistence."""
         balance_data = {"balances": []}
 
-        with patch("sqlite3.connect") as mock_connect:
-            mock_connect.side_effect = Exception("Database error")
+        with (
+            patch.object(database_service.balances, "persist") as mock_persist,
+            patch.object(
+                database_service.balance_transformer, "transform_to_database_format"
+            ) as mock_transform,
+        ):
+            mock_persist.side_effect = Exception("Database error")
+            mock_transform.return_value = []
 
             with pytest.raises(Exception, match="Database error"):
-                await database_service._persist_balance_sqlite(
-                    "test-account-123", balance_data
-                )
+                await database_service.persist_balance("test-account-123", balance_data)
 
     async def test_persist_transactions_sqlite_success(
         self, database_service, sample_transactions_db_format
     ):
         """Test successful transaction persistence."""
-        with patch("sqlite3.connect") as mock_connect:
-            mock_conn = mock_connect.return_value
-            mock_cursor = mock_conn.cursor.return_value
-            # Mock fetchone to return (0,) indicating transaction doesn't exist yet
-            mock_cursor.fetchone.return_value = (0,)
+        with patch.object(database_service.transactions, "persist") as mock_persist:
+            mock_persist.return_value = sample_transactions_db_format
 
-            result = await database_service._persist_transactions_sqlite(
+            result = await database_service.persist_transactions(
                 "test-account-123", sample_transactions_db_format
             )
 
-            # Should return the transactions (assuming no duplicates)
-            assert len(result) >= 0  # Could be empty if all are duplicates
-
-            # Verify database operations
-            mock_connect.assert_called()
-            mock_cursor.execute.assert_called()
-            mock_conn.commit.assert_called_once()
-            mock_conn.close.assert_called_once()
+            # Should return the new transactions
+            assert len(result) == 2
+            mock_persist.assert_called_once_with(
+                "test-account-123", sample_transactions_db_format
+            )
 
     async def test_persist_transactions_sqlite_duplicate_detection(
         self, database_service, sample_transactions_db_format
     ):
         """Test that existing transactions are not returned as new."""
-        with patch("sqlite3.connect") as mock_connect:
-            mock_conn = mock_connect.return_value
-            mock_cursor = mock_conn.cursor.return_value
-            # Mock fetchone to return (1,) indicating transaction already exists
-            mock_cursor.fetchone.return_value = (1,)
+        with patch.object(database_service.transactions, "persist") as mock_persist:
+            # Return empty list indicating all were duplicates
+            mock_persist.return_value = []
 
-            result = await database_service._persist_transactions_sqlite(
+            result = await database_service.persist_transactions(
                 "test-account-123", sample_transactions_db_format
             )
 
             # Should return empty list since all transactions already exist
             assert len(result) == 0
-
-            # Verify database operations still happened (INSERT OR REPLACE executed)
-            mock_connect.assert_called()
-            mock_cursor.execute.assert_called()
-            mock_conn.commit.assert_called_once()
-            mock_conn.close.assert_called_once()
+            mock_persist.assert_called_once()
 
     async def test_persist_transactions_sqlite_error(self, database_service):
         """Test handling error during transaction persistence."""
-        with patch("sqlite3.connect") as mock_connect:
-            mock_connect.side_effect = Exception("Database error")
+        with patch.object(database_service.transactions, "persist") as mock_persist:
+            mock_persist.side_effect = Exception("Database error")
 
             with pytest.raises(Exception, match="Database error"):
-                await database_service._persist_transactions_sqlite(
-                    "test-account-123", []
-                )
+                await database_service.persist_transactions("test-account-123", [])
 
     async def test_process_transactions_booked_and_pending(self, database_service):
         """Test processing transactions with both booked and pending."""

tests/unit/test_sync_notifications.py

@@ -0,0 +1,244 @@
+"""Tests for sync service notification functionality."""
+
+from unittest.mock import patch
+
+import pytest
+
+from leggen.services.sync_service import SyncService
+
+
+@pytest.mark.unit
+class TestSyncNotifications:
+    """Test sync service notification functionality."""
+
+    @pytest.mark.asyncio
+    async def test_sync_failure_sends_notification(self):
+        """Test that sync failures trigger notifications."""
+        sync_service = SyncService()
+
+        # Mock the dependencies
+        with (
+            patch.object(
+                sync_service.gocardless, "get_requisitions"
+            ) as mock_get_requisitions,
+            patch.object(
+                sync_service.gocardless, "get_account_details"
+            ) as mock_get_details,
+            patch.object(
+                sync_service.notifications, "send_sync_failure_notification"
+            ) as mock_send_notification,
+            patch.object(sync_service.sync, "persist", return_value=1),
+        ):
+            # Setup: One requisition with one account that will fail
+            mock_get_requisitions.return_value = {
+                "results": [
+                    {
+                        "id": "req-123",
+                        "institution_id": "TEST_BANK",
+                        "status": "LN",
+                        "accounts": ["account-1"],
+                    }
+                ]
+            }
+
+            # Make account details fail
+            mock_get_details.side_effect = Exception("API Error")
+
+            # Execute: Run sync which should fail for the account
+            await sync_service.sync_all_accounts()
+
+            # Assert: Notification should be sent for the failed account
+            mock_send_notification.assert_called_once()
+            call_args = mock_send_notification.call_args[0][0]
+            assert call_args["account_id"] == "account-1"
+            assert "API Error" in call_args["error"]
+            assert call_args["type"] == "account_sync_failure"
+
+    @pytest.mark.asyncio
+    async def test_expired_requisition_sends_notification(self):
+        """Test that expired requisitions trigger expiry notifications."""
+        sync_service = SyncService()
+
+        # Mock the dependencies
+        with (
+            patch.object(
+                sync_service.gocardless, "get_requisitions"
+            ) as mock_get_requisitions,
+            patch.object(
+                sync_service.notifications, "send_expiry_notification"
+            ) as mock_send_expiry,
+            patch.object(sync_service.sync, "persist", return_value=1),
+        ):
+            # Setup: One expired requisition
+            mock_get_requisitions.return_value = {
+                "results": [
+                    {
+                        "id": "req-expired",
+                        "institution_id": "EXPIRED_BANK",
+                        "status": "EX",
+                        "accounts": [],
+                    }
+                ]
+            }
+
+            # Execute: Run sync
+            await sync_service.sync_all_accounts()
+
+            # Assert: Expiry notification should be sent
+            mock_send_expiry.assert_called_once()
+            call_args = mock_send_expiry.call_args[0][0]
+            assert call_args["requisition_id"] == "req-expired"
+            assert call_args["bank"] == "EXPIRED_BANK"
+            assert call_args["status"] == "expired"
+            assert call_args["days_left"] == 0
+
+    @pytest.mark.asyncio
+    async def test_multiple_failures_send_multiple_notifications(self):
+        """Test that multiple account failures send multiple notifications."""
+        sync_service = SyncService()
+
+        # Mock the dependencies
+        with (
+            patch.object(
+                sync_service.gocardless, "get_requisitions"
+            ) as mock_get_requisitions,
+            patch.object(
+                sync_service.gocardless, "get_account_details"
+            ) as mock_get_details,
+            patch.object(
+                sync_service.notifications, "send_sync_failure_notification"
+            ) as mock_send_notification,
+            patch.object(sync_service.sync, "persist", return_value=1),
+        ):
+            # Setup: One requisition with two accounts that will fail
+            mock_get_requisitions.return_value = {
+                "results": [
+                    {
+                        "id": "req-123",
+                        "institution_id": "TEST_BANK",
+                        "status": "LN",
+                        "accounts": ["account-1", "account-2"],
+                    }
+                ]
+            }
+
+            # Make all account details fail
+            mock_get_details.side_effect = Exception("API Error")
+
+            # Execute: Run sync
+            await sync_service.sync_all_accounts()
+
+            # Assert: Two notifications should be sent
+            assert mock_send_notification.call_count == 2
+
+    @pytest.mark.asyncio
+    async def test_successful_sync_no_failure_notification(self):
+        """Test that successful syncs don't send failure notifications."""
+        sync_service = SyncService()
+
+        # Mock the dependencies
+        with (
+            patch.object(
+                sync_service.gocardless, "get_requisitions"
+            ) as mock_get_requisitions,
+            patch.object(
+                sync_service.gocardless, "get_account_details"
+            ) as mock_get_details,
+            patch.object(
+                sync_service.gocardless, "get_account_balances"
+            ) as mock_get_balances,
+            patch.object(
+                sync_service.gocardless, "get_account_transactions"
+            ) as mock_get_transactions,
+            patch.object(
+                sync_service.notifications, "send_sync_failure_notification"
+            ) as mock_send_notification,
+            patch.object(sync_service.notifications, "send_transaction_notifications"),
+            patch.object(sync_service.accounts, "persist"),
+            patch.object(sync_service.balances, "persist"),
+            patch.object(
+                sync_service.transaction_processor,
+                "process_transactions",
+                return_value=[],
+            ),
+            patch.object(sync_service.transactions, "persist", return_value=[]),
+            patch.object(sync_service.sync, "persist", return_value=1),
+        ):
+            # Setup: One requisition with one account that succeeds
+            mock_get_requisitions.return_value = {
+                "results": [
+                    {
+                        "id": "req-123",
+                        "institution_id": "TEST_BANK",
+                        "status": "LN",
+                        "accounts": ["account-1"],
+                    }
+                ]
+            }
+
+            mock_get_details.return_value = {
+                "id": "account-1",
+                "institution_id": "TEST_BANK",
+                "status": "READY",
+                "iban": "TEST123",
+            }
+
+            mock_get_balances.return_value = {
+                "balances": [{"balanceAmount": {"amount": "100", "currency": "EUR"}}]
+            }
+
+            mock_get_transactions.return_value = {"transactions": {"booked": []}}
+
+            # Execute: Run sync
+            await sync_service.sync_all_accounts()
+
+            # Assert: No failure notification should be sent
+            mock_send_notification.assert_not_called()
+
+    @pytest.mark.asyncio
+    async def test_notification_failure_does_not_stop_sync(self):
+        """Test that notification failures don't stop the sync process."""
+        sync_service = SyncService()
+
+        # Mock the dependencies
+        with (
+            patch.object(
+                sync_service.gocardless, "get_requisitions"
+            ) as mock_get_requisitions,
+            patch.object(
+                sync_service.gocardless, "get_account_details"
+            ) as mock_get_details,
+            patch.object(
+                sync_service.notifications, "_send_discord_sync_failure"
+            ) as mock_discord_notification,
+            patch.object(
+                sync_service.notifications, "_send_telegram_sync_failure"
+            ) as mock_telegram_notification,
+            patch.object(sync_service.sync, "persist", return_value=1),
+        ):
+            # Setup: One requisition with one account that will fail
+            mock_get_requisitions.return_value = {
+                "results": [
+                    {
+                        "id": "req-123",
+                        "institution_id": "TEST_BANK",
+                        "status": "LN",
+                        "accounts": ["account-1"],
+                    }
+                ]
+            }
+
+            # Make account details fail
+            mock_get_details.side_effect = Exception("API Error")
+
+            # Make both notification methods fail
+            mock_discord_notification.side_effect = Exception("Discord Error")
+            mock_telegram_notification.side_effect = Exception("Telegram Error")
+
+            # Execute: Run sync - should not raise exception from notification
+            result = await sync_service.sync_all_accounts()
+
+            # The sync should complete with errors but not crash from notifications
+            assert result.success is False
+            assert len(result.errors) > 0
+            assert "API Error" in result.errors[0]

uv.lock

@@ -2,6 +2,15 @@ version = 1
 revision = 3
 requires-python = "==3.13.*"
 
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 version = "0.7.0"
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