# Todo Application

A simple Todo application built with FastAPI and SQLite.

## Features

- Create, read, update, and delete todo items
- SQLite database with SQLAlchemy ORM
- Database migrations with Alembic
- Health check endpoint
- OpenAPI documentation
- Test script for API functionality

## Project Structure

```
todoapplication/
├── alembic/                  # Database migrations
├── app/                      # Application code
│   ├── api/                  # API routes and endpoints
│   │   ├── crud/             # CRUD operations
│   │   ├── endpoints/        # API endpoint implementations
│   ├── core/                 # Core functionality
│   │   ├── config.py         # Application configuration
│   ├── db/                   # Database related code
│   │   ├── session.py        # Database session management
│   ├── models/               # SQLAlchemy models
│   │   ├── todo.py           # Todo model
│   ├── schemas/              # Pydantic schemas
│   │   ├── todo.py           # Todo schemas
├── storage/                  # Storage directory
│   ├── db/                   # Database files location
├── alembic.ini               # Alembic configuration
├── main.py                   # Application entry point
├── requirements.txt          # Python dependencies
├── test_api.py               # API testing script
```

## API Endpoints

- `GET /api/v1/todos`: Get all todos
- `POST /api/v1/todos`: Create a new todo
- `GET /api/v1/todos/{todo_id}`: Get a specific todo
- `PUT /api/v1/todos/{todo_id}`: Update a specific todo
- `DELETE /api/v1/todos/{todo_id}`: Delete a specific todo
- `GET /health`: Health check endpoint
- `GET /docs`: API documentation (Swagger UI)
- `GET /redoc`: API documentation (ReDoc)

## Getting Started

### Prerequisites

- Python 3.8+

### Installation

1. Clone the repository
2. Install dependencies:

```bash
pip install -r requirements.txt
```

3. Run the application:

```bash
uvicorn main:app --reload
```

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

### Database Migrations

Run migrations:

```bash
alembic upgrade head
```

Create a new migration:

```bash
alembic revision -m "your migration message"
```

### Testing

Run the API tests (make sure the server is running first):

```bash
python test_api.py
```

This will test all the CRUD operations for the Todo API.