# User Authentication Service

A FastAPI-based user authentication service with JWT token authentication and SQLite database.

## Features

- User registration and login
- JWT token-based authentication
- Password hashing with bcrypt
- SQLite database with SQLAlchemy ORM
- Alembic database migrations
- CORS enabled for all origins
- Health check endpoint

## API Endpoints

- `GET /` - Service information and links
- `GET /health` - Health check endpoint
- `POST /auth/register` - User registration
- `POST /auth/login` - User login
- `GET /auth/me` - Get current user profile (requires authentication)
- `GET /docs` - Interactive API documentation
- `GET /redoc` - Alternative API documentation

## Setup

1. Install dependencies:
   ```bash
   pip install -r requirements.txt
   ```

2. Set environment variables:
   ```bash
   export SECRET_KEY="your-secret-key-here"
   ```
   **Note:** The SECRET_KEY environment variable is required for JWT token generation. Make sure to set it to a secure random string in production.

3. Run database migrations:
   ```bash
   alembic upgrade head
   ```

4. Start the application:
   ```bash
   uvicorn main:app --reload
   ```

The application will be available at `http://localhost:8000`

## Environment Variables

- `SECRET_KEY` - Secret key for JWT token signing (required)

## Database

The application uses SQLite database stored at `/app/storage/db/db.sqlite`. The database directory will be created automatically on first run.