# Annotation Platform Backend

FastAPI-based backend for the annotation platform.

## Setup

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

2. Configure environment variables (optional):
```bash
cp .env.example .env
# Edit .env with your configuration
```

## Running the Server

Development mode:
```bash
python main.py
```

Or with uvicorn directly:
```bash
uvicorn main:app --reload --host 0.0.0.0 --port 8000
```

## API Documentation

Once the server is running, visit:
- Swagger UI: http://localhost:8000/docs
- ReDoc: http://localhost:8000/redoc

## Project Structure

```
backend/
├── main.py              # FastAPI application entry point
├── database.py          # Database connection and initialization
├── models.py            # Database models
├── requirements.txt     # Python dependencies
├── routers/            # API route handlers
├── services/           # Business logic
└── schemas/            # Pydantic schemas for validation
```

## Database

The application uses SQLite for data storage. The database file is created automatically on first run.

Default location: `annotation_platform.db`

To use a custom location, set the `DATABASE_PATH` environment variable.

## Testing

Run tests with pytest:
```bash
pytest
```