A secure Node.js & Express REST API for the myWallet personal finance application.

• 🔐 JWT Authentication - Secure user registration and login
• 💼 Wallet Management - CRUD operations for multiple user wallets
• 💸 Transaction Engine - Automated balance updates and reversal logic
• 📁 Categories - Custom transaction categories with icons and colors
• 📊 Budgets & Savings - Monthly budget tracking and goal management
• 🛡️ Ownership Guard - Data isolation per user via middleware

• Node.js - Runtime environment
• Express.js - Web framework
• TypeScript - Type safety
• Prisma - ORM for database management
• PostgreSQL - Relational database
• JWT - Secure authentication
• Zod - Schema validation
• Helmet/CORS - Security headers

• Node.js 18+
• PostgreSQL instance running
• npm or yarn

1. Clone and Navigate

   cd myWalletBackend

2. Install Dependencies

   npm install

3. Configure Environment Create a .env file in the root directory:

   PORT=4000
   DATABASE_URL="postgresql://user:password@localhost:5432/mywallet"
   JWT_SECRET="your_secure_secret_here"

4. Initialize Database

   npx prisma db push
   npx prisma generate

5. Start Dev Server

   npm run dev

   The API will be available at http://localhost:4000.

myWalletBackend/
├── src/
│   ├── controllers/    # Request handlers & logic
│   ├── middlewares/    # Auth and security
│   ├── routes/         # Express router definitions
│   ├── utils/          # DB & shared helpers
│   └── index.ts        # Entry point
├── prisma/             # Schema & migrations
└── .env                # Configuration

Private / Proprietary.