📓 Notepad — Personal Notes Web App

A full-stack notes app with user accounts, built with Python (Flask) + HTML/CSS/JS.

Features

• ✅ Register & login with username + password
• ✅ Write notes directly in the browser
• ✅ Upload .txt files as notes
• ✅ View, browse, and delete notes
• ✅ Notes are stored per-user in a JSON file
• ✅ Passwords hashed with SHA-256
• ✅ Keyboard shortcut: Ctrl+Enter to save

Setup

1. Install dependencies

pip install -r requirements.txt

2. Run the server

python app.py

3. Open in browser

Visit: http://localhost:5000

Project Structure

notes_app/
├── app.py              # Flask backend (API + static serving)
├── requirements.txt    # Python dependencies
├── data/
│   └── db.json         # User accounts + notes (auto-created)
└── static/
    └── index.html      # Full frontend (HTML + CSS + JS)

API Endpoints

Method	Endpoint	Description
POST	/api/register	Create new account
POST	/api/login	Authenticate user
GET	/api/notes/:user	Get all notes
POST	/api/notes/:user	Save a new note
DELETE	/api/notes/:user/:id	Delete a note

Notes on Security

• Passwords are hashed before storage (SHA-256)
• Each API request requires the password hash as X-Auth header
• For production use, consider adding HTTPS, session tokens, and rate limiting