Fix api in lib folder.

frontend/src/lib/api.ts

@@ -0,0 +1,67 @@
+import axios from 'axios';
+import type { Account, Transaction, Balance, ApiResponse } from '../types/api';
+
+const API_BASE_URL = import.meta.env.VITE_API_URL || 'http://localhost:8000/api/v1';
+
+const api = axios.create({
+  baseURL: API_BASE_URL,
+  headers: {
+    'Content-Type': 'application/json',
+  },
+});
+
+export const apiClient = {
+  // Get all accounts
+  getAccounts: async (): Promise<Account[]> => {
+    const response = await api.get<ApiResponse<Account[]>>('/accounts');
+    return response.data.data;
+  },
+
+  // Get account by ID
+  getAccount: async (id: string): Promise<Account> => {
+    const response = await api.get<ApiResponse<Account>>(`/accounts/${id}`);
+    return response.data.data;
+  },
+
+  // Get all balances
+  getBalances: async (): Promise<Balance[]> => {
+    const response = await api.get<ApiResponse<Balance[]>>('/balances');
+    return response.data.data;
+  },
+
+  // Get balances for specific account
+  getAccountBalances: async (accountId: string): Promise<Balance[]> => {
+    const response = await api.get<ApiResponse<Balance[]>>(`/accounts/${accountId}/balances`);
+    return response.data.data;
+  },
+
+  // Get transactions with optional filters
+  getTransactions: async (params?: {
+    accountId?: string;
+    startDate?: string;
+    endDate?: string;
+    page?: number;
+    perPage?: number;
+    search?: string;
+  }): Promise<Transaction[]> => {
+    const queryParams = new URLSearchParams();
+
+    if (params?.accountId) queryParams.append('account_id', params.accountId);
+    if (params?.startDate) queryParams.append('start_date', params.startDate);
+    if (params?.endDate) queryParams.append('end_date', params.endDate);
+    if (params?.page) queryParams.append('page', params.page.toString());
+    if (params?.perPage) queryParams.append('per_page', params.perPage.toString());
+    if (params?.search) queryParams.append('search', params.search);
+
+    const response = await api.get<ApiResponse<Transaction[]>>(`/transactions?${queryParams.toString()}`);
+    return response.data.data;
+  },
+
+  // Get transaction by ID
+  getTransaction: async (id: string): Promise<Transaction> => {
+    const response = await api.get<ApiResponse<Transaction>>(`/transactions/${id}`);
+    return response.data.data;
+  },
+};
+
+export default apiClient;