Notes Application

A full-stack notes application with user authentication, public/private notes, and sorting algorithm performance analysis.

Features

• User Authentication: JWT-based login/register
• Notes Management: Create, read, update, delete notes
• Public/Private Notes: Notes can be public or private
• Markdown Support: Write notes in Markdown
• Tags: Organize notes with tags
• Comments: Add comments to notes
• Sorting Algorithms: Compare Merge Sort, Quick Sort, Bubble Sort, and MongoDB Native
• Performance Metrics: View execution time and complexity

Tech Stack

• Backend: NestJS, MongoDB (Mongoose)
• Frontend: Next.js 16, React Query
• Database: MongoDB

Quick Start

Prerequisites

• Node.js 18+
• MongoDB (local or Atlas)

Backend Setup

cd apps/backend
npm install

# Create .env file
echo "MONGODB_URI=mongodb://localhost:27017/notes-db
JWT_SECRET=your-secret-key-change-in-production
CORS_ORIGIN=http://localhost:3001" > .env

# Start development server
npm run start:dev

Backend runs on http://localhost:5000

Frontend Setup

cd apps/frontend
npm install

# Start development server
npm run dev

Frontend runs on http://localhost:3001

Usage

1. Register a new user at /register
2. Login at /login
3. Create notes at /notes/new
4. Toggle isPublic to make notes visible to others
5. View all notes at /notes
6. Check statistics at /stats

API Documentation

Swagger docs available at http://localhost:5000/api/docs

Project Structure

apps/
├── backend/           # NestJS API
│   └── src/
│       ├── auth/    # JWT auth
│       ├── notes/   # Notes CRUD
│       └── entities/
└── frontend/       # Next.js UI
    └── app/
        ├── notes/  # Notes pages
        └── lib/   # API client