ChatApp

A real-time chat application with video calling functionality built using Node.js, Socket.IO, MongoDB, and Agora RTC. This application allows users to create individual and group chats, send messages in real-time, and make video calls.

Features

• User Authentication: Simple email-based login and signup system
• Real-time Messaging: Instant message delivery using Socket.IO
• Individual & Group Chats: Create private conversations or group chats with multiple users
• Video Calling: Integrated video calling functionality using Agora RTC
• Responsive Design: Modern UI built with Tailwind CSS and DaisyUI
• Message History: Persistent message storage and retrieval
• Session Management: Secure session handling with client-sessions

Tech Stack

Backend

• Node.js - Server runtime
• Express.js - Web framework
• Socket.IO - Real-time bidirectional communication
• MongoDB - Database for storing users, messages, and rooms
• Mongoose - MongoDB object modeling
• client-sessions - Session management

Frontend

• EJS - Template engine
• Tailwind CSS - Utility-first CSS framework
• DaisyUI - Tailwind CSS component library
• Socket.IO Client - Real-time communication
• Agora RTC SDK - Video calling functionality

Installation

1. Clone the repository

   git clone https://github.com/Harkit2004/chatapp-men-ejs.git
   cd chatapp-mem-ejs

2. Install dependencies

   npm install

3. Environment Configuration Create a .env file in the root directory:

   PORT=8080
   URI=mongodb://localhost:27017/chatapp
   SECRET=your-session-secret-key-here

4. Start the application

   npm start

5. Access the application Open your browser and navigate to http://localhost:8080

API Routes

Authentication Routes

• GET / - Homepage
• GET /login - Login page
• POST /login - Process login
• GET /signup - Signup page
• POST /signup - Process signup
• GET /logout - Logout user

User Routes (Protected)

• GET /user - User dashboard with chat rooms
• GET /user/chatRoom/:roomId - Individual chat room
• GET /user/addContacts - Add contacts page
• POST /user/addContacts - Create new room/group

Error Handling

• GET /error - Error page with status and message

Socket.IO Events

Client to Server

• chat-message - Send a new message
• disconnect - User disconnects from chat

Server to Client

• message-received - Receive new message
• error - Error notification

Video Calling

The application integrates Agora RTC for video calling functionality. Features include:

• Join/leave video calls
• Toggle microphone on/off
• Toggle camera on/off
• Multiple participants support
• Real-time video streaming