User Authentication and Real-Time Chat System

This project aims to implement a user authentication system along with real-time chat functionality. The system utilizes Socket.io for efficient real-time communication, and MongoDB for message storage.

Features

1. User Authentication: Users can register with a unique email and password.

2. Chat Functionality: Users can send and receive real-time messages. Socket.io is employed for efficient real-time communication.

3.Message Storage: All messages are stored in MongoDB. Messages in the chat are retrievable for conversation history.

4.User Online Status and Language Model Integration (LLM): Users can set their status as 'AVAILABLE' or 'BUSY'. Chat requests are only sent if the recipient is online. If the recipient is 'BUSY', an appropriate response is generated using a language model API.

Technologies Used

Node.js: Backend runtime environment. Express.js: Web application framework for Node.js. MongoDB: NoSQL database for message storage. Socket.io: Real-time communication library. Language Model API: Utilized for generating responses when a user is 'BUSY'.

Setup Instructions

1. Clone the repository.
2. Install dependencies using npm install.
3. Set up MongoDB and configure the connection string.
4. Set up the language model API and obtain the necessary credentials/API keys.
5. Configure environment variables.

Run the application using

npm run dev for the front end part

start the backend using nodemon index.js.

API Endpoints /register: Endpoint for user registration. /login: Endpoint for user login. /chat: Endpoint for real-time chat functionality. /status: Endpoint for updating user status.