# User Authentication Service

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

## Features

- User registration and login
- JWT token-based authentication  
- Password hashing with bcrypt
- SQLite database with SQLAlchemy ORM
- Database migrations with Alembic
- CORS enabled for all origins
- Health check endpoint
- API documentation at `/docs` and `/redoc`

## Installation

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

2. Set up environment variables (optional):
```bash
export SECRET_KEY="your-secret-key-here"
export ACCESS_TOKEN_EXPIRE_MINUTES="30"
```

## Running the Application

Start the development server:
```bash
uvicorn main:app --reload
```

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

## API Endpoints

- `GET /` - Service information
- `POST /auth/register` - Register a new user
- `POST /auth/login` - Login and get access token
- `GET /auth/me` - Get current user info (requires authentication)
- `GET /health` - Health check endpoint
- `GET /docs` - Interactive API documentation
- `GET /redoc` - Alternative API documentation

## Environment Variables

- `SECRET_KEY` - Secret key for JWT token signing (default: "your-secret-key-change-this-in-production")
- `ACCESS_TOKEN_EXPIRE_MINUTES` - Token expiration time in minutes (default: 30)

## Database

The application uses SQLite database stored at `/app/storage/db/db.sqlite`. Database migrations are managed with Alembic.