ChatGPT API Project

A Node.js/Express API for ChatGPT-like functionality with Gemini AI integration and Cloudinary file uploads.

Features

• User authentication (JWT)
• Chat management
• Message history
• Gemini AI integration
• File uploads to Cloudinary
• Google OAuth integration

Tech Stack

• Node.js
• Express
• MongoDB
• Google Generative AI
• Cloudinary
• JWT Authentication

Environment Variables

Create a .env.local file with these variables:

DB_URL=mongodb_connection_string
JWT_SECRET=your_jwt_secret
GOOGLE_API_KEY=your_google_api_key
MEM0_API_KEY=your_mem0_key
CLOUDINARY_CLOUD_NAME=your_cloud_name
CLOUDINARY_API_KEY=your_api_key
CLOUDINARY_API_SECRET=your_api_secret
FRONTEND_URL=your_frontend_url

Installation

1. Clone the repository
2. Install dependencies:

npm install

3. Set up environment variables
4. Run the development server:

npm run dev

API Endpoints

• POST /api/auth/register - User registration
• POST /api/auth/login - User login
• POST /api/google/auth - Google OAuth
• POST /api/chat/create - Create new chat
• GET /api/chat/get - Get user chats
• POST /api/chat/messages/create - Create message
• GET /api/chat/messages/:chatId - Get chat messages
• POST /api/gemini/chat - Gemini AI chat (supports file uploads)

File Uploads

Files can be uploaded to Cloudinary via:

POST /api/gemini/chat

Supported formats: JPG, PNG, GIF, PDF, DOC, DOCX