🎓 Zetoe Academy

Modern Learning Management System built with Next.js 15, TypeScript, and Supabase.

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🚀 Features

• ✅ Student Management - Registration, course enrollment, payment tracking
• ✅ Course Management - Create and manage courses with exams
• ✅ Exam System - Timed exams with automatic grading
• ✅ Role-Based Access - Student, Admin, Super Admin roles
• ✅ Certificate Verification - Upload and verify certificates with unique codes
• ✅ Performance Optimized - Database indexes, API caching

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📚 Tech Stack

• Framework: Next.js 15.5.4 (App Router)
• Language: TypeScript
• Database: PostgreSQL (Supabase)
• Authentication: Supabase Auth
• Styling: Tailwind CSS
• Caching: In-memory cache with auto-invalidation

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🏃 Quick Start

Prerequisites

• Node.js 18+
• npm or yarn
• Supabase account

Installation

# Clone repository
git clone <repository-url>
cd zetoe_academy

# Install dependencies
npm install

# Set up environment variables
cp .env.example .env.local
# Add your Supabase credentials

# Run development server
npm run dev

Visit http://localhost:3000

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🗄️ Database Setup

1. Run Optimization Script

# In Supabase SQL Editor
# Run: supabase/database-optimization.sql

This creates:

• 15+ performance indexes
• Query optimization functions
• Full-text search capabilities

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📊 Performance

Database Optimization

• 15+ indexes (composite, GIN, B-tree)
• pg_trgm for full-text search
• Pagination on all list queries
• Query optimization functions

📖 See: docs/QUERY_OPTIMIZATION_GUIDE.md

API Caching

• In-memory cache with TTL
• Automatic cache expiration
• Pattern-based invalidation
• 95% faster cached responses

📖 See: docs/API_CACHING_GUIDE.md

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🎯 Available Scripts

Script	Description
npm run dev	Start development server
npm run build	Build for production
npm start	Start production server
npm run lint	Run ESLint

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📁 Project Structure

zetoe_academy/
├── src/
│   ├── app/                    # Next.js app router
│   │   ├── api/               # API routes
│   │   ├── dashboard/         # Student dashboard
│   │   ├── admin-dashboard/   # Admin dashboard
│   │   └── certificates/      # Certificate verification
│   └── lib/                    # Utilities
│       ├── cache.ts           # Caching system
│       └── swr-config.ts      # Client-side cache config
├── supabase/                   # Database
│   └── database-optimization.sql
└── docs/                       # Documentation
    ├── API_CACHING_GUIDE.md
    └── QUERY_OPTIMIZATION_GUIDE.md

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🔐 User Roles

Student

• View enrolled courses
• Take exams
• View scores and certificates
• Dashboard access

Admin

• Create students
• Assign courses
• Set payment status
• Create exams
• View scores
• Manage students

Super Admin

• All admin permissions
• Create/delete admins
• System-wide access
• View admin logs

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🎓 Certificate System

Admin: Upload Certificate

1. Navigate to Admin Dashboard
2. Go to Certificates section
3. Upload certificate with unique code
4. Certificate stored in Supabase Storage

Public: Verify Certificate

1. Visit /certificates
2. Enter certificate code
3. View certificate if valid

📖 See: docs/CERTIFICATE_SYSTEM_SUMMARY.md

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🚀 Deployment

Vercel (Recommended)

# Install Vercel CLI
npm i -g vercel

# Deploy
vercel

Environment Variables

Required:

NEXT_PUBLIC_SUPABASE_URL=your_supabase_url
NEXT_PUBLIC_SUPABASE_ANON_KEY=your_anon_key
SUPABASE_SERVICE_ROLE_KEY=your_service_role_key

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📖 Documentation

Document	Description
API Caching	Caching implementation
Query Optimization	Database optimization
Certificate System	Certificate verification

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🐛 Known Issues

None at this time. Report issues in GitHub Issues.

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🤝 Contributing

1. Fork repository
2. Create feature branch
3. Commit changes
4. Push to branch
5. Open pull request

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📄 License

MIT License

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🙏 Acknowledgments

• Next.js team for amazing framework
• Supabase for backend infrastructure
• Playwright for testing framework

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📞 Support

• 📧 Email: support@zetoe.com
• 📖 Documentation: /docs
• 🐛 Issues: GitHub Issues

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✅ Status

Production Ready ✅

All features implemented and tested:

• ✅ Student management
• ✅ Course management
• ✅ Exam system
• ✅ Certificate verification
• ✅ Database optimization
• ✅ API caching

GitHub Issues Resolved:

1. ✅ Database Query Optimization
2. ✅ API Caching Implementation

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Built with ❤️ by the Zetoe Academy Team