Backend - Calendar Event Management System

📌 Overview

This backend is built using Node.js, Express, and MongoDB, with Redis and Socket.IO to handle real-time event notifications efficiently. It powers a calendar-based event management system where users can create and manage events inside rooms.

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⚙️ Tech Stack

• Node.js & Express - Backend framework
• MongoDB & Mongoose - Database and ORM
• Redis - Used for Pub/Sub messaging and storing OTP
• Socket.IO - Real-time communication
• Server-Sent Events (SSE) - For live event notifications
• JWT Authentication - Secure user authentication
• Nodemailer - For sending email verifications to user

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🔧 Installation & Setup

1️⃣ Clone the repository

git clone https://github.com/ramzy1453/Calendar-Events-Backend.git
cd backend

2️⃣ Install dependencies

npm install

3️⃣ Set up environment variables

Create a .env file and configure:

ProjectName = "events-calendar"
VERSION = v1

PORT= 5000
DB_NAME = events-calendar
DB_URL =mongodb+srv://username:password@cluster4.abcde.mongodb.net/events-calendar
DB_PASS = gaza

JWT_SECRET = your_secret
JWT_EXPIRE = 30d


NODE_ENV = "development"
FRONTEND_URL=http://localhost:3000
REDIS_URL=redis://localhost:6379

EMAIL_USER=test@gmail.com
EMAIL_PASS=your_pass```

### **4️⃣ Start the server**

```sh
npm run dev
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/backend
 ├── src/
 │   ├── controllers/   # Handles request logic
 │   ├── models/        # Mongoose schemas
 │   ├── routes/        # Express routes
 │   ├── services/      # Business logic
 │   ├── config/        # Configuration files (Redis, MongoDB, etc.)
 │   ├── middlewares/    # Authentication & validation
 │   ├── utils/         # Utility functions
 │   ├── lib/           # Helper methods
 │   ├── index.ts       # Main app
 ├── .env               # Environment variables
 ├── package.json       # Dependencies
 └── README.md          # Project documentation
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## 📜 Contributing

1. **Fork the project**
2. **Create a new branch** (`git checkout -b feature/new-feature`)
3. **Commit your changes** (`git commit -m "Added new feature"`)
4. **Push to the branch** (`git push origin feature/new-feature`)
5. **Open a Pull Request**

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## ⚖️ License

This project is open-source and available under the **MIT License**.