Social Commerce & Live Auction PWA

### Project Title: Social Commerce and Live Auction PWA Platform (MERN Stack) #### 1. Project Overview The objective is to develop a production-ready, scalable Progressive Web App (PWA) that merges social media engagement with a multi-vendor marketplace and a real-time auction system. The platform will follow a mobile-first design philosophy, similar to Instagram, and must be built with an API-first architecture to support future native mobile application development. #### 2. Core Technical Stack * **Frontend:** React.js (PWA enabled), Tailwind CSS for responsive UI, and Redux or Context API for state management. * **Backend:** Node.js with Express.js. * **Database:** MongoDB (using Mongoose for schema modeling). * **Real-Time Communication:** Socket.io for live bidding, notifications, and instant messaging. * **Payment Gateway:** Razorpay integration for standard checkouts and auction wins. * **Media Storage:** Cloudinary or AWS S3 for hosting high-resolution images, Reels, and Stories. * **Authentication:** JWT (JSON Web Tokens) for secure, role-based access control. #### 3. Detailed User Roles and Permissions **A. Admin Panel (Separate or Modular Structure)** * **Hierarchy:** Owner (Full Access), CEO (Operational Control), and Managers (Restricted Permissions). * **Functionalities:** * KYC verification for sellers (GSTIN, Identity Docs). * Content moderation (Flagging/Banning users or posts). * Commission management for marketplace and auction sales. * Ad Management: Priority placement of sponsored content in the user feed. * Comprehensive analytics dashboard (Revenue, User Growth, Engagement). **B. Seller Role** * **Shop Management:** Create and edit a professional shop profile (Instagram-style grid). * **Inventory:** Upload products with "Fixed Price" or "Auction" listing options. * **Auction Controls:** Set starting bids, reserve prices, and auction duration. * **Dashboard:** Track orders, bid history, and shop analytics. **C. Buyer/Creator Role** * **Social Profile:** Manage bio, profile picture, and personal content grid. * **Content Creation:** Upload Reels (short video), Stories (24-hour expiry), and standard posts. * **Interaction:** Follow/Unfollow, Like, Comment, and Share features. * **Bidding Dashboard:** Monitor active bids, outbid notifications, and won auctions. #### 4. The Live Bidding and Auction System This is a critical module requiring high-concurrency handling: * **Real-Time Engine:** Implementation of WebSockets to ensure bid updates are pushed instantly to all participants without page refreshes. * **Auction Logic:** * Live countdown timers synced with the server. * Automatic "Highest Bidder" updates. * Anti-sniping features (e.g., extending the timer by 30 seconds if a bid is placed in the final minute). * **Post-Auction Workflow:** Upon auction completion, the winner is automatically notified and redirected to a secure Razorpay checkout for the final bid amount. #### 5. Social Media Integration * **Feed Algorithm:** A dynamic feed displaying Reels, Stories, and standard posts. Priority is given to Admin-sponsored ads and active Live Auctions. * **Discovery:** Advanced search functionality for Users, Shops, and specific Products. * **Engagement UI:** Stacked profile layout, infinite scroll for the feed, and an "Explore" page for viral Reels. #### 6. Marketplace and Payments * **Standard Checkout:** Secure cart and multi-item checkout via Razorpay. * **Invoicing:** Automated GST-compliant invoice generation for every transaction. * **Order Tracking:** Status updates for buyers (Processing, Shipped, Delivered). #### 7. Developer Requirements and Deliverables * **Clean Code:** Modular folder structure (Controllers, Routes, Models, Middleware) and reusable React components. * **Performance:** Implementation of lazy loading for media and database indexing for search optimization. * **Documentation:** Complete API documentation (Postman collection) and a deployment guide. * **Scalability:** The backend must be structured to handle high traffic during peak auction times. * **PWA Compliance:** Service workers for offline capabilities and "Add to Home Screen" functionality. #### 8. Project Phases * **Phase 1:** Backend Architecture, Database Design, and Authentication. * **Phase 2:** Social Feed, Reels, and Content Management UI. * **Phase 3:** Marketplace Integration, Seller KYC, and Product Listings. * **Phase 4:** Live Auction Engine (WebSockets) and Real-Time Notifications. * **Phase 5:** Razorpay Integration, Admin Analytics, and PWA Optimization.