Enhanced Todo API Application

This is an improved Todo API application built with FastAPI and SQLite, featuring advanced task management capabilities.

Features

• Create, Read, Update, and Delete todos
• Todo prioritization (low, medium, high)
• Due dates for deadline tracking
• Tag/category support for organizing todos
• Advanced search and filtering capabilities
• Upcoming tasks view for planning
• Health endpoint for monitoring application status
• SQLite database for data persistence
• Alembic for database migrations
• NEW Subtasks support for breaking down complex todos
• NEW Task reminder functionality

Project Structure

simpletodoapplication/
├── app/
│   ├── __init__.py
│   ├── database.py
│   ├── models.py
│   └── schemas.py
├── migrations/
│   ├── versions/
│   │   ├── 001_create_todos_table.py
│   │   ├── 002_add_priority_and_due_date.py
│   │   ├── 003_add_tags_table_and_associations.py
│   │   └── 004_add_subtasks_and_reminders.py
│   ├── env.py
│   ├── README
│   └── script.py.mako
├── alembic.ini
├── main.py
└── requirements.txt

API Endpoints

Health

• GET /health - Check API health

Todo Management

• GET /todos - Get all todos with optional filtering
• POST /todos - Create a new todo
• POST /todos/with-tags - Create a new todo with tags (creates tags if they don't exist)
• GET /todos/{todo_id} - Get a specific todo
• PUT /todos/{todo_id} - Update a todo
• DELETE /todos/{todo_id} - Delete a todo

Search & Filtering

• GET /todos/search - Search todos by title, description, or tag
• GET /todos/upcoming - Get todos due in the next N days (defaults to 7)
• GET /todos/reminders - Get todos with reminders in the next N hours (defaults to 24)
• GET /todos - With query parameters for advanced filtering:
  • title - Filter by title (partial match)
  • description - Filter by description (partial match)
  • completed - Filter by completion status
  • priority - Filter by priority level
  • tag - Filter by tag name
  • due_before - Filter todos due before a specific date
  • due_after - Filter todos due after a specific date
  • overdue - Filter overdue todos

Tag Management

• GET /tags - Get all tags
• POST /tags - Create a new tag
• GET /tags/{tag_id} - Get a specific tag

Subtask Management

• POST /todos/{todo_id}/subtasks - Create a new subtask for a todo
• GET /todos/{todo_id}/subtasks - Get all subtasks for a todo
• GET /subtasks/{subtask_id} - Get a specific subtask
• PUT /subtasks/{subtask_id} - Update a subtask
• DELETE /subtasks/{subtask_id} - Delete a subtask
• PUT /todos/{todo_id}/complete-all-subtasks - Mark all subtasks of a todo as completed

Reminder Management

• PUT /todos/{todo_id}/set-reminder - Set or update a reminder for a todo

Requirements

• Python 3.8+
• Dependencies listed in requirements.txt

Installation and Setup

1. Clone the repository
2. Install dependencies:

   pip install -r requirements.txt
   

3. Run database migrations:

   alembic upgrade head
   

4. Start the server:

   uvicorn main:app --reload
   

API Documentation

Once the application is running, you can access:

• Swagger UI documentation at /docs
• ReDoc documentation at /redoc