This is the backend API for BudgetWise, a modern full-stack expense tracker application. It is built with Node.js and Express.js and provides a secure RESTful API for all frontend operations.

• Secure Authentication: JWT-based authentication for user registration and login, with password hashing using bcrypt.
• Protected Routes: Middleware to protect sensitive endpoints and ensure users can only access their own data.
• Full CRUD API: Complete Create, Read, Update, and Delete functionality for user expenses.
• Scalable Architecture: Organized with a modular structure (routes, middleware) for easy maintenance and future expansion.
• Database Integration: Connects to a PostgreSQL database for reliable and persistent data storage.

• Runtime: Node.js
• Framework: Express.js
• Database: PostgreSQL
• Authentication: JSON Web Tokens (JWT), bcryptjs
• Language: JavaScript (ES Modules)

To run this project locally:

1. Clone the repository.

2. Install dependencies:

   npm install

3. Set up your PostgreSQL database and create the users and expenses tables using the database.sql script.

4. Create a .env file in the root directory and add your database credentials and a JWT secret:

   DB_USER=your_username
   DB_HOST=localhost
   DB_NAME=your_database_name
   DB_PASSWORD=your_password
   DB_PORT=5432
   JWT_SECRET=your_super_secret_key

5. Start the server:

   node index.js