NoteLink

NoteLink is a full-stack note management platform with a Go backend, MongoDB database, and React frontend.

Features

• User Authentication: JWT-based authentication with bcrypt password hashing
• Note Management: CRUD operations with automatic timestamps
• Full-text Search: Search across note titles and content
• Note Sharing: Share notes with other users
• Rate Limiting: Built-in rate limiting via golang.org/x/time/rate

🛠 Tech Stack

Backend

• Language: Go 1.21.3
• Framework: Gorilla Mux
• Database: MongoDB 6.0
• Authentication: JWT (JSON Web Tokens)
• Password Hashing: bcrypt
• Rate Limiting: golang.org/x/time/rate

Frontend

• Framework: React 18
• Routing: React Router v6
• HTTP Client: Axios
• Styling: Custom CSS with responsive design
• State Management: React Hooks and Context API

Infrastructure

• Containerization: Docker & Docker Compose
• CI/CD: GitHub Actions

🚀 Quick Start

Prerequisites

• Docker and Docker Compose
• Git

Quick Start

# Clone the repository
git clone https://github.com/priyanshu360/NoteLink.git
cd NoteLink

# Start the application
docker-compose up --build

# Backend API: http://localhost:8080
# Database: mongodb://admin:password123@localhost:27017/notelink

Backend API

Authentication Endpoints

• POST /api/auth/signup - Create new user account
• POST /api/auth/login - Authenticate user and get JWT token

Note Endpoints (Protected)

• GET /api/notes - Get all user notes
• GET /api/notes/{id} - Get specific note
• POST /api/notes - Create new note
• PUT /api/notes/{id} - Update existing note
• DELETE /api/notes/{id} - Delete note
• POST /api/notes/{id}/share - Share note with user
• GET /api/search?q={query} - Search notes

Testing

Backend Tests

# Run all tests
go test ./...

# Run tests with coverage
go test -v -coverprofile=coverage.out ./...
go tool cover -html=coverage.out -o coverage.html

Frontend

cd frontend
npm test
npm run build

Recent Fixes

• Single MongoDB connection: Previously two separate connections were created per server instance. Now a single mongo.Client is shared across all repositories.
• Centralized JWT secret: Removed three duplicated getJWTSecret() functions and a hardcoded fallback in utils/validators.go. JWT secret now reads from JWT_SECRET env var in one place (utils.GetJWTSecret()).
• Proper context propagation: Replaced all 13 context.TODO() calls in the repository layer with request-scoped context.Context threaded from handlers through services to repositories, enabling proper cancellation and timeout propagation.
• Wired up validators: utils/validators.go ValidateJWT() is now used by AuthMiddleware and getUserIDFromToken, replacing inline JWT parsing.
• Removed dead config: GIN_MODE=release removed from docker-compose.yml (application uses Gorilla Mux, not Gin).