# QR Attendance & Certificate Generation Module Plan

## 1. QR Attendance
- [x] Integrate QR scanning in host dashboard.
- [x] On scan, call backend to mark attendance.
- [x] QR Scanner component exists at `Frontend/src/hostdashboard/QRScanner.jsx`
- [x] Backend endpoint `/api/hosts/scan-qr` implemented

## 2. Certificate Generation
- [x] Add option in event creation to enable certificates.
- [x] Modal for host to upload participant data (CSV/Excel), signatures, and designation.
- [x] Allow template selection/upload.
- [x] Backend endpoint to receive uploads and trigger certificate generation.
- [x] Use `/ML/certificate_generator/generator.py` for batch certificate creation.
- [x] Store generated certificates and provide download/email options.
- [x] Complete Certificate Management UI component created

## 3. Certificate Distribution
- [x] API to fetch/download certificates for users.
- [x] Optionally, email certificates to participants.
- [x] Download endpoints implemented

## 4. Admin/Host Controls
- [x] Dashboard to view certificate status, re-generate, or re-send.
- [x] Complete status dashboard with participant tracking

## 5. Security & Validation
- [x] Validate uploads (file type, size).
- [x] Ensure only hosts/co-hosts can trigger certificate generation.
- [x] QR code expiry and single-use validation
- [x] Per-event QR verification (scan must match event) with unlimited scans

---

## Implementation Summary

### ✅ Completed Files

#### Backend
1. **Controller/certificateManagement.js** - NEW
   - Certificate settings management
   - Asset upload handling
   - Certificate generation orchestration
   - Status tracking
   - User certificate retrieval

2. **Routes/certificateManagementRoutes.js** - NEW
   - All certificate management endpoints
   - Proper authentication and authorization
   - Swagger documentation

3. **Routes/hostRoutes.js** - UPDATED
   - Added QR scanning endpoint
   - Integrated with event controller

4. **Models/Event.js** - UPDATED
   - Added certificate settings schema
   - Upload tracking

5. **app.js** - UPDATED
   - Registered certificate management routes

#### Frontend
1. **hostdashboard/CertificateManagement.jsx** - NEW
   - Complete certificate management UI
   - Settings configuration
   - Asset upload interface
   - Status dashboard
   - Participant tracking table
   - Generation and regeneration controls

2. **hostdashboard/QRScanner.jsx** - EXISTS
   - QR code scanning functionality
   - Real-time validation
   - Attendance marking

3. **hostdashboard/index.js** - UPDATED
   - Exported CertificateManagement component

#### Documentation
1. **docs/host-module-complete-guide.md** - NEW
   - Complete implementation guide
   - Workflow documentation
   - API documentation
   - Security considerations
   - Testing checklist
   - Troubleshooting guide

---

## Integration Points

### Certificate Generator API
- Base URL: `http://localhost:8000` (configurable)
- Endpoints integrated:
  - `/upload-template`
  - `/upload-logo`
  - `/upload-signature`
  - `/config/*`
  - `/generate`
  - `/download/{filename}`

### Backend APIs
- `/api/hosts/scan-qr` - QR attendance marking
- `/api/certificate-management/events/:eventId/*` - Certificate operations
- `/api/events/my-qr/:eventId` - User QR retrieval

---

## Next Steps for Deployment

1. **Environment Setup**
   ```bash
   # Add to .env
   CERTIFICATE_API_URL=http://localhost:8000
   ```

2. **Start Certificate Generator**
   ```bash
   cd ML/certificate_generator
   python api_main.py
   ```

3. **Install Dependencies**
   ```bash
   cd Backend
   npm install axios form-data
   
   cd ../Frontend
   npm install @mui/material @emotion/react @emotion/styled
   ```

4. **Database Migration**
   - Event schema already supports certificate settings
   - No migration needed, backward compatible

5. **Testing**
   - Test QR scanning flow
   - Test certificate generation end-to-end
   - Verify asset uploads
   - Check permissions

---

**Status:** ✅ COMPLETE - All planned features implemented
**Date:** November 14, 2025

---

**References:**  
- `/ML/certificate_generator/README.md` for generator usage.  
- `/Backend/Controller/host.js` for attendance and event logic.
- `/docs/host-module-complete-guide.md` for complete implementation guide.