MERN-GPT

This application is an AI Chatbot built using the MERN Stack and Google Gemini AI API. It takes inspiration from ChatGPT and offers a customized chatbot experience.

One of the key features of this application is the ability to store and retrieve user messages from a database, providing a contextual chatbot experience. The application prioritizes security by implementing various measures such as JWT Tokens, HTTP-Only Cookies, Signed Cookies, Password Encryption, and Middleware Chains.

Features

• Secure Authentication (JWT Tokens, HTTP-Only Cookies, Signed Cookies)
• Password Encryption
• Middleware Chains
• User Messages Stored in DB (contextual chatbot)
• Customized Chatbot Using Google AI API

Usage

Running Backend

For running the backend, you need to have Node.js installed on your system. Also you need to populate the .env file with the following variables:

GOOGLE_GEN_AI_API_KEY="YOUR_GOOGLE_GEN_AI_API_KEY"

MONGODB_USERNAME="your_mongodb_username"
MONGODB_PASSWORD="your_mongodb_password"
MONGODB_URL="your_mongodb_url"

JWT_SECRET = "your_jwt_secret"
COOKIE_SECRET = "your_cookie_secret"

PORT=3000 (or any other port)

Place the .env file in the Backend folder.

Then run the following commands in the terminal:

cd Backend
npm install
npm start

This will start the backend server at http://localhost:3000 (or any other port you have specified)

Running Frontend

For running the frontend, run the following commands in the terminal:

cd Frontend
npm install
npm run dev

This will start the frontend server with output as:

VITE v5.0.12  ready in 178 ms

  ➜  Local:   http://localhost:(port)/
  ➜  Network: use --host to expose
  ➜  press h + enter to show help

Open the link (mentioned as Local) in your browser to see the application running.

Note: Reloading page will automatically log you out, as the server will not be able to verify the JWT Token. You need to login again.

Example

Some screenshots of the application:

Home Page:

Sign Up Page:

Login Page:

Chatbot Page:

Error Page:

Inspiration

This project is inspired by ChatGPT, and is a customized version of it.

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Note

This is a Personal Project and is not intended for commercial use.