# SSAP Backend

Node.js/Express backend for SSAP application with PostgreSQL database.

## Prerequisites

- Node.js (v14 or higher)
- PostgreSQL database
- npm or yarn

## Setup

1. Install dependencies:
```bash
npm install
```

2. Create a `.env` file based on `.env.example`:
```bash
cp .env.example .env
```

3. Update the `.env` file with your database credentials:
```
PORT=8080
DATABASE_URL=postgresql://username:password@localhost:5432/database_name
```

## Running the Application

### Development mode (with auto-reload):
```bash
npm run dev
```

### Production mode:
```bash
npm start
```

The server will start on the port specified in your `.env` file (default: 8080).

## Project Structure

```
backend/
├── src/           # Source code
├── .env           # Environment variables (not committed)
├── .env.example   # Environment variables template
├── package.json   # Project dependencies
└── README.md      # This file
```

## Technologies

- **Express.js** - Web framework
- **PostgreSQL** - Database
- **dotenv** - Environment variable management
- **CORS** - Cross-origin resource sharing
- **express-rate-limit** - API rate limiting