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# SimpleTodoApp API
A FastAPI-based backend for a simple Todo application with SQLite database and user authentication.
## Features
- User registration and authentication with JWT tokens
- Create, read, update, and delete Todo items (protected by authentication)
- User-specific Todo items
- Role-based access control (regular users and superusers)
- Health check endpoint
- SQLite database with SQLAlchemy ORM
- Database migrations with Alembic
- Comprehensive API documentation with Swagger UI and ReDoc
## Project Structure
```
simpletodoapp/
├── api/ # API-related code
│ ├── crud/ # CRUD operations
│ │ ├── todo.py # Todo CRUD operations
│ │ └── user.py # User CRUD operations
│ ├── routers/ # API endpoints
│ │ ├── auth_router.py # Authentication endpoints
│ │ ├── health_router.py # Health check endpoint
│ │ ├── todo_router.py # Todo endpoints
│ │ └── user_router.py # User endpoints
│ ├── schemas/ # Pydantic models for request/response validation
│ │ ├── health.py # Health check schemas
│ │ ├── todo.py # Todo schemas
│ │ └── user.py # User and authentication schemas
│ └── utils/ # Utility functions
│ └── auth.py # Authentication utilities
├── db/ # Database-related code
│ ├── database.py # Database connection and session
│ └── models.py # SQLAlchemy models
├── migrations/ # Alembic migrations
├── alembic.ini # Alembic configuration
├── main.py # FastAPI application entry point
└── requirements.txt # Project dependencies
```
## Installation & Setup
1. Clone this repository
2. Install dependencies:
```
pip install -r requirements.txt
```
3. Apply database migrations:
```
alembic upgrade head
```
4. Run the application:
```
uvicorn main:app --reload
```
## Authentication
The API uses JWT (JSON Web Tokens) for authentication. To use protected endpoints:
1. Register a new user using `POST /api/users`
2. Get an access token using `POST /api/auth/token` with your username and password
3. Include the token in the `Authorization` header of your requests:
```
Authorization: Bearer <your_token>
```
Access tokens expire after 30 minutes by default.
## API Documentation
Once the server is running, you can access:
- Swagger UI documentation at `/docs`
- ReDoc documentation at `/redoc`
## API Endpoints
### Authentication
- `POST /api/auth/token` - Get access token (login)
- `POST /api/users` - Register a new user
### Users
- `GET /api/users/me` - Get current user information
- `PUT /api/users/me` - Update current user information
- `GET /api/users/{id}` - Get user information by ID (current user or superuser only)
- `GET /api/users` - List all users (superuser only)
- `DELETE /api/users/{id}` - Delete a user (superuser only)
### Todos
All todo endpoints require authentication.
- `GET /api/todos` - List all todos for current user
- `GET /api/todos/{id}` - Get a single todo by ID (owned by current user)
- `POST /api/todos` - Create a new todo (owned by current user)
- `PATCH /api/todos/{id}` - Update a todo (owned by current user)
- `DELETE /api/todos/{id}` - Delete a todo (owned by current user)
### Health
- `GET /api/health` - Health check endpoint