ChatDouble V2

This repository contains the next-generation version of ChatDouble with a modern web app architecture.

• backend/: FastAPI backend for auth, Supabase access, bot embeddings, Gemini chat generation, and credit management.
• frontend/: Next.js App Router frontend with Supabase auth, bot upload, chat UI, and purchase flows.
• Legacy Streamlit prototype files remain in the repo root for reference.

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What�s Included

• FastAPI backend with Supabase integration and credit-based billing
• Next.js frontend using Supabase auth and API integration
• Google Gemini response generation
• Supabase PostgreSQL / pgvector embedding search
• Credit packs and purchase workflow
• Bot upload, persona generation, and vector similarity retrieval

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Quick Start

Backend

Create backend/.env with:

SUPABASE_URL=https://your-project.supabase.co
SUPABASE_SERVICE_KEY=your-service-role-key
GOOGLE_API_KEY=your-gemini-api-key

Then run:

cd backend
python -m pip install -r requirements.txt
python main.py

The backend listens on http://127.0.0.1:8000.

Frontend

Create frontend/.env.local with:

NEXT_PUBLIC_SUPABASE_URL=https://your-project.supabase.co
NEXT_PUBLIC_SUPABASE_ANON_KEY=your-supabase-anon-key

Then run:

cd frontend
npm install
npm run dev

Open http://localhost:3000.

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Environment Variables

Backend (backend/.env):

• SUPABASE_URL
• SUPABASE_SERVICE_KEY
• GOOGLE_API_KEY

Frontend (frontend/.env.local):

• NEXT_PUBLIC_SUPABASE_URL
• NEXT_PUBLIC_SUPABASE_ANON_KEY

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Project Structure

ChatDouble/
+-- backend/
�   +-- auth.py
�   +-- main.py
�   +-- supabase_client.py
�   +-- utils.py
�   +-- requirements.txt
+-- frontend/
�   +-- src/app/page.tsx
�   +-- src/lib/supabaseClient.ts
�   +-- tsconfig.json
+-- README.md
+-- .gitignore

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Notes

• The backend uses SUPABASE_SERVICE_KEY for server-side Supabase access.
• The frontend uses public Supabase environment variables only.
• The legacy Streamlit prototype remains in the repo root for reference.

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Next Steps

1. Create Supabase tables for profiles, bots, embeddings, and transactions.
2. Add the match_bot_embeddings RPC function in Supabase.
3. Deploy the backend and frontend to hosting platforms.
4. Hook in a real payment provider for credit purchases.

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License

MIT