LunaAI Backend

Express backend powering chat, auth, conversation history, uploads, and AI integrations.

Stack

• Node.js
• Express
• Supabase
• Gemini / OpenAI style integrations
• Multer for uploads

Features

• Streaming chat responses
• Conversation storage and history
• Auth and JWT handling
• File upload processing
• Chart and media response support
• AI-generated conversation titles

Run Locally

npm install
npm run dev

Server runs on http://localhost:5000

Environment

Create a .env file in assignment-backend/ with values for:

PORT=5000
NODE_ENV=development

GEMINI_API_KEY=your_key
OPENAI_API_KEY=your_key

SUPABASE_URL=your_supabase_url
SUPABASE_ANON_KEY=your_supabase_anon_key
SUPABASE_SERVICE_KEY=your_supabase_service_key

JWT_SECRET=your_jwt_secret
JWT_EXPIRES_IN=10d

GOOGLE_CLIENT_ID=your_google_client_id
GOOGLE_CLIENT_SECRET=your_google_client_secret
GOOGLE_API_KEY=your_google_api_key
GOOGLE_CSE_ID=your_google_cse_id
YOUTUBE_API_KEY=your_youtube_api_key

SERPAPI_KEY=your_serpapi_key

FEATHERLESS_API_KEY=your_featherless_key
FEATHERLESS_BASE_URL=https://api.featherless.ai/v1
FEATHERLESS_MODEL_NAME=Qwen/Qwen2.5-7B-Instruct

Scripts

npm run dev
npm start

Structure

src/controllers request handlers
src/routes      API routes
src/services    AI and business logic
src/config      env and config
src/server.js   app entry

Notes

This backend is designed to work with the LunaAI frontend in the sibling frontend/ folder.