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leggen/AGENTS.md
2025-09-13 19:42:53 +01:00

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# Agent Guidelines for Leggen
## Quick Setup for Development
### Prerequisites
- **uv** must be installed for Python dependency management (can be installed via `pip install uv`)
### Generate Mock Database
The leggen CLI provides a command to generate a mock database for testing:
```bash
# Generate sample database with default settings (3 accounts, 50 transactions each)
uv run leggen generate_sample_db --database /path/to/test.db --force
# Custom configuration
uv run leggen generate_sample_db --database ./test-data.db --accounts 5 --transactions 100 --force
```
The command outputs instructions for setting the required environment variable to use the generated database.
### Start the API Server
1. Install uv if not already installed: `pip install uv`
2. Set the database environment variable to point to your generated mock database:
```bash
export LEGGEN_DATABASE_PATH=/path/to/your/generated/database.db
```
3. Start the API server:
```bash
uv run leggend
```
- For development mode with auto-reload: `uv run leggend --reload`
- API will be available at `http://localhost:8000` with docs at `http://localhost:8000/docs`
### Start the Frontend
1. Navigate to the frontend directory: `cd frontend`
2. Install npm dependencies: `npm install`
3. Start the development server: `npm run dev`
- Frontend will be available at `http://localhost:3000`
- The frontend is configured to connect to the API at `http://localhost:8000/api/v1`
## Build/Lint/Test Commands
### Frontend (React/TypeScript)
- **Dev server**: `cd frontend && npm run dev`
- **Build**: `cd frontend && npm run build`
- **Lint**: `cd frontend && npm run lint`
### Backend (Python)
- **Lint**: `uv run ruff check .`
- **Format**: `uv run ruff format .`
- **Type check**: `uv run mypy leggen leggend --check-untyped-defs`
- **All checks**: `uv run pre-commit run --all-files`
- **Run all tests**: `uv run pytest`
- **Run single test**: `uv run pytest tests/unit/test_api_accounts.py::TestAccountsAPI::test_get_all_accounts_success -v`
- **Run tests by marker**: `uv run pytest -m "api"` or `uv run pytest -m "unit"`
## Code Style Guidelines
### Python
- **Imports**: Standard library → Third-party → Local (blank lines between groups)
- **Naming**: snake_case for variables/functions, PascalCase for classes
- **Types**: Use type hints for all function parameters and return values
- **Error handling**: Use specific exceptions, loguru for logging
- **Path handling**: Use `pathlib.Path` instead of `os.path`
- **CLI**: Use Click framework with proper option decorators
### TypeScript/React
- **Imports**: React hooks first, then third-party, then local components/types
- **Naming**: PascalCase for components, camelCase for variables/functions
- **Types**: Use `import type` for type-only imports, define interfaces/types
- **Styling**: Tailwind CSS with `clsx` utility for conditional classes
- **Icons**: lucide-react with consistent naming
- **Data fetching**: @tanstack/react-query with proper error handling
- **Components**: Functional components with hooks, proper TypeScript typing
### General
- **Formatting**: ruff for Python, ESLint for TypeScript
- **Commits**: Use conventional commits with optional scopes, run pre-commit hooks before pushing
- Format: `type(scope): Description starting with uppercase and ending with period.`
- Scopes: `cli`, `api`, `frontend` (optional)
- Types: `feat`, `fix`, `refactor` (avoid too many different types)
- Examples:
- `feat(frontend): Add support for S3 backups.`
- `fix(api): Resolve authentication timeout issues.`
- `refactor(cli): Improve error handling for missing config.`
- Avoid including specific numbers, counts, or data-dependent information that may become outdated
- **Security**: Never log sensitive data, use environment variables for secrets
## Contributing Guidelines
This repository follows conventional changelog practices. Refer to `CONTRIBUTING.md` for detailed contribution guidelines including:
- Commit message format and scoping
- Release process using `scripts/release.sh`
- Pre-commit hooks setup with `pre-commit install`