📜 Flask Todo App

A full-featured Flask-based Todo application with:

• ✅ User registration & login
• 🌒 Light/Dark mode toggle
• ✍️ Task creation, completion, editing & deletion
• 🗕️ Calendar view (FullCalendar)
• 📧 Email reminders for due tasks
• 📄 Export to CSV
• 🔐 Secure config via .env

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🚀 Features

Feature	Description
👤 Authentication	Register/login system using werkzeug.security
🌗 Dark Mode Toggle	Session-based light/dark theme switching
📬 Email Reminders	SMTP-based alerts for tasks due today
📄 Export Tasks	CSV download of your todo list
✨ Task Manager	Add, complete, delete, edit tasks
🗕️ Calendar View	View tasks visually by due date

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🧱 Tech Stack

• Python 3.10+
• Flask
• Bootstrap 5
• Jinja2 templating
• FullCalendar.js (calendar view)
• python-dotenv for config
• SMTP (for email reminders)

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🔐 Environment Variables

Create a .env file in your project root with:

FLASK_SECRET_KEY=your_secret
EMAIL_USER=your_email@example.com
EMAIL_PASS=your_password
EMAIL_SMTP=smtp.example.com
EMAIL_PORT=587

✅ Be sure to add .env to your .gitignore

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🚀 Run Locally

git clone https://github.com/YOUR_USERNAME/todo-flask-app.git
cd todo-flask-app
pip install -r requirements.txt
flask run

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📧 Sending Email Reminders

You can manually visit /remind or schedule a cron job:

curl https://your-deployed-app.com/remind

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📦 Deploying

• Recommended: Render
• Set up environment variables from .env
• Use gunicorn as your start command:

web: gunicorn main:app

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📄 License

MIT © [Your Name]