first commit

api/src/config/data-source.ts

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+import 'reflect-metadata';
+import fs from 'node:fs';
+import path from 'node:path';
+import { DataSource } from 'typeorm';
+import { env } from './env.js';
+import { AppSetting } from '../entities/AppSetting.js';
+import { Category } from '../entities/Category.js';
+import { Expense } from '../entities/Expense.js';
+import { Merchant } from '../entities/Merchant.js';
+import { Proof } from '../entities/Proof.js';
+import { User } from '../entities/User.js';
+
+const entities = [User, Category, Expense, Proof, AppSetting, Merchant];
+const baseOptions = { entities, synchronize: env.DB_SYNC, logging: env.DB_LOGGING };
+
+if (env.DB_TYPE === 'sqlite') {
+  const file = path.resolve(env.DB_PATH);
+  fs.mkdirSync(path.dirname(file), { recursive: true });
+}
+
+export const AppDataSource =
+  env.DB_TYPE === 'postgres'
+    ? new DataSource({
+        type: 'postgres',
+        host: env.DB_HOST,
+        port: env.DB_PORT,
+        username: env.DB_USER,
+        password: env.DB_PASSWORD,
+        database: env.DB_NAME,
+        ...baseOptions
+      })
+    : new DataSource({
+        type: 'sqljs',
+        location: path.resolve(env.DB_PATH),
+        autoSave: true,
+        ...baseOptions
+      });

api/src/config/env.ts

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+import dotenv from 'dotenv';
+dotenv.config();
+type DbType = 'postgres' | 'sqlite';
+const toNumber = (value: string | undefined, fallback: number) => {
+  const parsed = Number(value);
+  return Number.isFinite(parsed) ? parsed : fallback;
+};
+const toBoolean = (value: string | undefined, fallback: boolean) => {
+  if (value === undefined) return fallback;
+  return value === 'true' || value === '1';
+};
+export const env = {
+  NODE_ENV: process.env.NODE_ENV ?? 'development',
+  APP_PORT: toNumber(process.env.APP_PORT, 4000),
+  JWT_SECRET: process.env.JWT_SECRET ?? 'dev-secret-key',
+  JWT_EXPIRES_IN: process.env.JWT_EXPIRES_IN ?? '7d',
+  DB_TYPE: (process.env.DB_TYPE as DbType | undefined) ?? 'sqlite',
+  DB_HOST: process.env.DB_HOST ?? 'localhost',
+  DB_PORT: toNumber(process.env.DB_PORT, 5432),
+  DB_NAME: process.env.DB_NAME ?? 'expense_control',
+  DB_USER: process.env.DB_USER ?? 'expense_app',
+  DB_PASSWORD: process.env.DB_PASSWORD ?? 'expense_app',
+  DB_PATH: process.env.DB_PATH ?? './data/dev.sqlite',
+  DB_SYNC: toBoolean(process.env.DB_SYNC, true),
+  DB_LOGGING: toBoolean(process.env.DB_LOGGING, false),
+  APP_NAME: process.env.APP_NAME ?? 'Expense Control',
+  DEFAULT_CURRENCY: process.env.DEFAULT_CURRENCY ?? 'PLN',
+  ADMIN_EMAIL: process.env.ADMIN_EMAIL ?? 'admin@example.com',
+  ADMIN_PASSWORD: process.env.ADMIN_PASSWORD ?? 'Admin123!',
+  UPLOAD_DIR: process.env.UPLOAD_DIR ?? './uploads',
+  MAX_UPLOAD_SIZE_MB: toNumber(process.env.MAX_UPLOAD_SIZE_MB, 10),
+  API_CORS_ORIGIN: process.env.API_CORS_ORIGIN ?? 'http://localhost:4200'
+};