Thrift Fashion Live Auction App Development

You are a senior full-stack engineer.

Build a mobile-first live auction marketplace app (similar to Whatnot) focused on thrift fashion in India.

Tech stack:
- Frontend: React Native (Expo)
- Backend: Node.js + Express
- Database: MongoDB
- Realtime: Socket.io
- Payments: Razorpay (UPI support)

Core Features:

1. Authentication:
- User signup/login (email + OTP optional)
- Separate roles: Buyer and Seller

2. Seller Features:
- Create live auction session
- Add products before going live (title, price, images, size, condition)
- Start live stream (mock video or placeholder for now)
- Start auction for each item with:
- Base price
- Timer (30–60 seconds)
- See live bids in real time

3. Buyer Features:
- Join live sessions
- View products in auction
- Place bids in real-time
- See countdown timer
- “Winning” indicator if highest bidder

4. Auction Logic:
- Real-time bidding using Socket.io
- Minimum bid increment (₹10 or ₹50)
- Auto-update highest bidder
- Auction ends when timer hits zero
- Declare winner

5. Checkout:
- Winner gets “Buy Now” screen
- Integrate Razorpay test mode
- Simple order confirmation screen

6. UI/UX:
- Clean, modern UI (dark + hype theme)
- Instagram Live + Whatnot inspired
- Include:
- Live chat
- Floating hearts/reactions
- Countdown timer UI

7. Admin (basic):
- View users
- View transactions

Folder structure:
- Separate frontend and backend clearly

Deliverables:
- Complete working MVP
- Clear setup instructions
- Dummy data for testing

Important:
- Focus on working prototype, not perfection
- Mock video streaming if needed (don’t overcomplicate)
- Prioritize real-time bidding functionality Show More