RAG Chat - AI Chatbot with Retrieval-Augmented Generation

AI-powered chatbot that answers questions based on your documents using RAG technology. Built with Next.js 15, tRPC, and Prisma.

Features

• 🔐 Authentication System: Complete user authentication with email/password, password reset, and email verification
• 💬 Chat Interface: Interactive chat with AI-powered responses
• 📊 Chat History: Persistent chat history with database storage
• 🎨 Modern UI: Built with Radix UI components and Tailwind CSS
• 🔒 Type-Safe API: tRPC for end-to-end type safety
• 🗄️ Database: PostgreSQL with Prisma ORM

Tech Stack

• Frontend: Next.js 15 (App Router), React 19, TypeScript
• Backend: tRPC, Next.js API Routes
• Database: PostgreSQL with Prisma ORM
• Authentication: NextAuth.js v5
• UI: Radix UI, Tailwind CSS 4
• Validation: Zod

Environment Variables

Create a .env file based on .env.example:

# Database - Use Neon, Vercel Postgres, or your PostgreSQL provider
DATABASE_URL="postgresql://user:password@host:5432/database"

# Authentication - Generate with: openssl rand -base64 32
AUTH_SECRET="your-secret-key-here"

# Environment
NODE_ENV="development"

Local Development

# Clone the repository
git clone https://github.com/dayOneAbu/RAG-chat
cd RAG-chat

# Install dependencies
npm install

# Set up environment variables
cp .env.example .env
# Edit .env with your actual values

# Run database migrations
npm run db:push

# Start development server
npm run dev

Open http://localhost:3000 to see the application.

Database Setup

This project uses PostgreSQL. For local development and production:

1. Local Development: Use a local PostgreSQL instance or a cloud provider
2. Production (Vercel): Use Neon or Vercel Postgres

After setting up your database:

# Push the Prisma schema to your database
npm run db:push

# Or run migrations
npm run db:generate

Deployment on Vercel

Prerequisites

• A Vercel account
• A PostgreSQL database (Neon, Vercel Postgres, etc.)

Deployment Steps

1. Push your code to GitHub

2. Import to Vercel

   • Go to Vercel
   • Click "New Project"
   • Import your GitHub repository

3. Configure Environment Variables in Vercel Dashboard:

   • DATABASE_URL: Your PostgreSQL connection string
   • AUTH_SECRET: Generate with openssl rand -base64 32
   • NODE_ENV: production

4. Deploy

   • Vercel will automatically build and deploy
   • Build command: npm run build
   • Output directory: .next

5. Run Migrations (first deployment only):

   # After deployment, run migrations via Vercel CLI or your database provider
   npx prisma migrate deploy

One-Click Deploy

Remember to configure environment variables after deployment!

Available Scripts

npm run dev          # Start development server
npm run build        # Build for production
npm run start        # Start production server
npm run lint         # Run ESLint
npm run lint:fix     # Fix ESLint errors
npm run typecheck    # Run TypeScript type checking
npm run db:push      # Push schema changes to database
npm run db:studio    # Open Prisma Studio

Project Structure

├── prisma/              # Database schema and migrations
├── public/              # Static assets
├── src/
│   ├── app/             # Next.js App Router pages
│   │   ├── _components/ # React components
│   │   ├── api/         # API routes
│   │   └── auth/        # Authentication pages
│   ├── server/          # Server-side code
│   │   ├── api/         # tRPC routers
│   │   └── db.ts        # Prisma client
│   ├── trpc/            # tRPC configuration
│   └── env.js           # Environment validation
└── vercel.json          # Vercel configuration

License

MIT

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.