# Zurri Development Log

## Project Overview
Zurri is an AI Agents Marketplace platform with a chat protocol, wallet point system, and Paystack payment integration.

## Completed Features

### ✅ Core Platform Refactoring
- [x] Refactored from models + agents to agents-only marketplace
- [x] Implemented chat protocol for agent communication
- [x] Removed all model-related code
- [x] Updated entities to focus on fully packaged agents

### ✅ Agent Management
- [x] Agent CRUD operations
- [x] Agent entity with fields: `avatar`, `category`, `reputation`, `capabilities`, `pointsPerTask`
- [x] IPFS integration for agent avatars (Pinata)
- [x] Agent listing with filters (category, search)
- [x] Agent status management (pending, approved, rejected)

### ✅ Chat Protocol
- [x] Standardized chat interface for agent communication
- [x] Message exchange with role-based system (user, assistant, system)
- [x] File and image upload support in chat
- [x] Support for document files and programming language extensions
- [x] IPFS storage for chat files
- [x] Chat history with filters (agentId, role, date range, search)

### ✅ Wallet Point System
- [x] Wallet entity with balance tracking
- [x] Transaction entity with types: credit, debit, charge, purchase, refund, free
- [x] Point system: 1 point = $0.05
- [x] Free tasks system: First 2 tasks per user are free
- [x] Wallet funding via Paystack
- [x] Transaction history with pagination
- [x] Balance conversion (points ↔ USD)

### ✅ Payment Integration (Paystack)
- [x] Paystack SDK integration (`paystack-node`)
- [x] Payment initialization endpoint
- [x] Webhook handler with HMAC signature verification
- [x] Payment callback handler (redirect flow)
- [x] Manual transaction verification endpoint
- [x] Idempotent payment processing (no double-crediting)
- [x] Complete Swagger documentation for all payment endpoints
- [x] Payment flow documentation

### ✅ Exchange Rate Management
- [x] Dynamic exchange rate service
- [x] Multiple API sources (ExchangeRate-API, CurrencyAPI, Fixer.io)
- [x] Intelligent caching (1-hour cache)
- [x] Fallback to fixed rate if APIs fail
- [x] Automatic adaptation to NGN/USD fluctuations

### ✅ User Management
- [x] User registration and authentication (JWT)
- [x] User profiles with wallet summary
- [x] User dashboard endpoints (chat history, wallet balance)
- [x] User history with filters

### ✅ Creator System
- [x] Creator registration with detailed profile
- [x] Creator authentication
- [x] CreatorProfile entity with comprehensive fields:
  - Basic info (fullName, username, bio, profileImage)
  - Professional info (organization, role, website, social links)
  - Technical stack (languages, frameworks, specialties)
  - Payout info (bank account, wallet address, currency)
  - Verification status
- [x] Creator dashboard endpoints (overview, earnings)
- [x] Earnings tracking with time-series data
- [x] Total points earned tracking (gross earnings)

### ✅ Admin Dashboard
- [x] Admin authentication middleware
- [x] Admin overview endpoint with platform statistics
- [x] Platform metrics (users, agents, messages, points volume)
- [x] Date range filters
- [x] Admin payment exemption for testing unapproved agents
- [x] Admin can test pending/rejected agents without payment
- [x] Admin test transactions tracked separately (ADMIN_TEST type)

### ✅ IPFS Integration (Pinata)
- [x] Pinata SDK integration
- [x] Metadata upload for agents
- [x] File upload for avatars
- [x] File upload for chat attachments
- [x] Gateway URL configuration

### ✅ API Documentation
- [x] Swagger UI integration
- [x] Complete API documentation for all endpoints
- [x] Request/response schemas
- [x] Authentication requirements
- [x] Example values

### ✅ Security & Best Practices
- [x] JWT authentication with enhanced validation
- [x] Password hashing (bcrypt, 12 rounds)
- [x] Password strength validation (8+ chars, uppercase, lowercase, number, special char)
- [x] Forgot password functionality with secure reset tokens
- [x] Password reset with token expiration (1 hour)
- [x] Change password endpoint for authenticated users
- [x] Account lockout after 5 failed login attempts (30-minute lockout)
- [x] Failed login attempt tracking
- [x] CORS configuration with origin validation
- [x] Helmet security headers (CSP, HSTS, XSS protection, frame guard)
- [x] Rate limiting (general API, auth endpoints, password reset)
- [x] Input sanitization (XSS prevention)
- [x] Request size validation
- [x] Request logging
- [x] Error handling with secure messages
- [x] Environment variable management
- [x] Trust proxy configuration for rate limiting

### ✅ Deployment
- [x] Dockerfile for Hugging Face Spaces
- [x] Multi-stage build optimization
- [x] Health check endpoint
- [x] Non-root user in Docker
- [x] .dockerignore configuration
- [x] Production-ready configuration

## Current Status

### ✅ Completed
- All core backend features implemented
- Payment system fully functional
- Exchange rate management operational
- Complete API documentation
- Docker deployment ready
- Security enhancements (password reset, account lockout, rate limiting)
- Admin testing capabilities (no payment for unapproved agents)

### 🔄 In Progress
- None

### 📋 Pending: Business Model Implementation

#### Payout System & Commission Model
The following features need to be implemented to complete the business model:

1. **Platform Commission System**
   - [ ] Configure platform commission percentage (e.g., 20-30%)
   - [ ] Store commission rate in environment variables or database
   - [ ] Calculate creator earnings after platform cut
   - [ ] Track platform revenue separately

2. **Creator Earnings Calculation**
   - [ ] Update earnings endpoints to show net earnings (after platform cut)
   - [ ] Track gross vs net earnings per transaction
   - [ ] Calculate platform revenue from each transaction
   - [ ] Display earnings breakdown (gross, platform fee, net)

3. **Payout System**
   - [ ] Create Payout entity (pending, processing, completed, failed)
   - [ ] Payout request endpoint for creators
   - [ ] Minimum payout threshold (e.g., $10 or 200 points)
   - [ ] Payout approval workflow (admin approval)
   - [ ] Payout processing (manual or automated via Paystack transfers)
   - [ ] Payout history for creators
   - [ ] Payout management for admins

4. **Financial Tracking**
   - [ ] Track platform revenue (total commission earned)
   - [ ] Track creator payouts (total paid out)
   - [ ] Track pending payouts
   - [ ] Financial reporting for admins

5. **Integration Requirements**
   - [ ] Paystack transfer API integration for automated payouts
   - [ ] Bank account verification for creators
   - [ ] Tax document handling (if required)
   - [ ] Payout notifications (email/webhook)

### 📋 Next Milestone: Frontend Development
The frontend will be built in a separate milestone. The backend is ready to serve API requests.

## API Endpoints Summary

### Authentication
- `POST /api/auth/register` - User registration
- `POST /api/auth/login` - User login
- `GET /api/auth/me` - Get current user profile
- `POST /api/auth/forgot-password` - Request password reset
- `POST /api/auth/reset-password` - Reset password with token
- `POST /api/auth/change-password` - Change password (authenticated)

### Creator Authentication
- `POST /api/creator-auth/register` - Creator registration
- `POST /api/creator-auth/login` - Creator login

### Agents
- `GET /api/agents` - List agents (with filters)
- `GET /api/agents/:id` - Get agent details
- `POST /api/agents` - Create agent (creator/admin)
- `PUT /api/agents/:id` - Update agent (creator/admin)
- `DELETE /api/agents/:id` - Delete agent (creator/admin)

### Chat
- `POST /api/chat/:id/message` - Send message to agent
- `GET /api/chat/:id/history` - Get chat history

### Wallet
- `GET /api/wallet` - Get wallet balance
- `POST /api/wallet/fund` - Initiate payment
- `GET /api/wallet/callback` - Payment callback (public)
- `GET /api/wallet/verify/:reference` - Verify transaction
- `GET /api/wallet/transactions` - Transaction history
- `POST /api/wallet/webhook/paystack` - Webhook (public)

### User
- `GET /api/users/me/history` - User chat history

### Creator
- `GET /api/creators/me/overview` - Creator dashboard
- `GET /api/creators/me/earnings` - Creator earnings

### Admin
- `GET /api/admin/overview` - Admin dashboard

### Documentation
- `GET /docs` - Swagger UI

## Environment Variables

### Required
- `DATABASE_URL` - PostgreSQL connection string
- `JWT_SECRET` - JWT secret key
- `PAYSTACK_SECRET_KEY` - Paystack secret key
- `PAYSTACK_PUBLIC_KEY` - Paystack public key

### Optional
- `PORT` - Server port (default: 7860 for HF Spaces, 3000 for local)
- `NODE_ENV` - Environment (development/production)
- `PINATA_JWT` - Pinata IPFS JWT
- `GATEWAY_URL` - IPFS gateway URL
- `NGN_PER_USD` - Exchange rate fallback (default: 750)
- `POINT_VALUE_USD` - Point value (default: 0.05)
- `FREE_TASKS_PER_USER` - Free tasks (default: 2)
- `BACKEND_URL` - Backend URL for callbacks
- `FRONTEND_URL` - Frontend URL for redirects
- `CORS_ORIGIN` - CORS allowed origin
- `CURRENCY_API_KEY` - Exchange rate API key
- `FIXER_API_KEY` - Alternative exchange rate API key

## Documentation Files

- `README.md` - Main project readme
- `README_HF.md` - Hugging Face Spaces deployment guide
- `PAYMENT_FLOW.md` - Complete payment flow documentation
- `CALLBACK_GUIDE.md` - Payment callback guide
- `WEBHOOK_SETUP.md` - Webhook setup instructions
- `EXCHANGE_RATE_GUIDE.md` - Exchange rate management guide
- `PAYMENT_TEST.md` - Payment testing guide

## Technical Stack

- **Runtime**: Node.js 20
- **Framework**: Express.js
- **Language**: TypeScript
- **Database**: PostgreSQL with TypeORM
- **Authentication**: JWT
- **File Storage**: IPFS (Pinata)
- **Payment**: Paystack
- **Documentation**: Swagger/OpenAPI
- **Deployment**: Docker (Hugging Face Spaces)

## Notes

- All payment endpoints are fully documented in Swagger UI
- Exchange rates automatically adapt to fluctuations
- Payment system is idempotent (no double-crediting)
- Frontend development will be done in a separate milestone
- Backend is production-ready and deployed on Hugging Face Spaces

## Recent Updates

### Security Enhancements (2024-11-04)
- Implemented comprehensive password security (strength validation, reset flow)
- Added account lockout after failed login attempts
- Enhanced rate limiting for authentication endpoints
- Added input sanitization and XSS protection
- Configured trust proxy for rate limiting behind proxies

### Admin Features (2024-11-04)
- Admins can test unapproved agents without payment
- Admin test transactions tracked separately
- Admin can view history for any agent status

### Business Model (Pending)
- Commission system and payout infrastructure planned
- See `TODO_BUSINESS_MODEL.md` for detailed implementation plan

## Last Updated
2024-11-04