📝 NoteSmart - AI-Powered Notes Management System

A full-stack MERN application that provides a centralized platform for creating, editing, organizing, and managing academic or personal notes. Featuring AI-powered summarization, real-time syncing with Socket.io, JWT authentication, and a beautiful Dark/Light mode interface.

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📸 Screenshots

🏠 Landing Page (Light Mode)

🌙 Landing Page (Dark Mode)

📊 Dashboard

📝 Create / Edit Note

🤖 AI Summary Modal

🤖 AI Summary Modal

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🌐 Live Demo

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🚀 Features

• 🔐 Secure Authentication - User registration & login using JWT and Bcrypt password hashing.
• 📝 Full CRUD Operations - Create, read, update, and delete notes seamlessly.
• 📌 Pin Important Notes - Keep priority notes at the top of your dashboard.
• 🏷️ Categories & Tags - Organize notes into custom categories with taggable keywords.
• 🔍 Live Search & Filter - Instantly search notes by title/content and filter by category.
• 🤖 AI Summarization - Generate instant summaries, key points, and revision questions from long notes.
• ⚡ Real-Time Sync - Notes update instantly across all devices using Socket.io (WebSockets).
• 🌙 Dark / Light Mode - Toggle between themes with smooth transitions.
• 📱 Fully Responsive - Works perfectly on desktop, tablet, and mobile.

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🛠️ Tech Stack

Frontend

• React.js (Vite)
• Tailwind CSS
• React Router DOM
• Axios
• Socket.io-client
• Lucide React (Icons)

Backend

• Node.js
• Express.js
• MongoDB (Mongoose)
• JWT (JSON Web Token)
• Bcrypt.js
• Socket.io

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⚙️ Installation & Setup

Prerequisites

• Node.js (v16 or higher)
• MongoDB (Local or Atlas)

1. Clone the repository

git clone https://github.com/SIMANTA-stack/note-management-system.git
cd note-management-system

2. Backend Setup
cd backend
npm install

Create a .env file inside the backend/ folder:
PORT=5000
MONGO_URI=mongodb://127.0.0.1:27017/notes_db
JWT_SECRET=supersecretjwtkey_12345

Start the backend server
npm run dev
Server runs on http://localhost:5000

3. Frontend Setup

Open a new terminal:
cd frontend
npm install
npm run dev
App runs on http://localhost:5173

🌐 API Endpoints
Method	   Endpoint	              Description
POST	/api/auth/register  	Register a new user
POST	/api/auth/login	       Login user & get JWT
GET 	/api/auth/profile	   Get logged-in user profile
GET	    /api/notes	           Get all user notes
POST	/api/notes	           Create a new note
GET	    /api/notes/:id	       Get a single note
PUT	    /api/notes/:id	       Update a note
DELETE	/api/notes/:id	       Delete a note
PUT	    /api/notes/:id/pin	   Toggle pin status
GET	    /api/categories	       Get all categories
POST	/api/categories    	   Create a category
POST	/api/ai/summarize	   Generate AI summary

🔒 Database Models
User: name, email, password (hashed)
Category: name, user (ref)
Note: title, content, tags[], isPinned, category (ref), user (ref)

🎯 Real-World Use Case
Perfect for students and professionals who need a secure digital workspace to manage lecture notes, exam preparation, and personal reminders. Access your notes across multiple devices in real-time, and let AI summarize long notes and generate revision questions for faster studying.

🧪 How to Test Real-Time Sync
Open the app in a regular browser window and log in.
Open an Incognito window and log into the same account.
Place both windows side-by-side.
Create/edit/delete a note in one window and watch it update instantly in the other! ⚡

🤝 Contributing
Contributions, issues, and feature requests are welcome! Feel free to check the issues page.

📄 License
This project is licensed under the MIT License.

👨‍💻 Author
Simanta

GitHub: @SIMANTA-stack