README_COMPLETE.md

Web3 Student Lab - Complete Platform Documentation

A full-stack blockchain education platform with Soroban smart contracts, Stellar blockchain integration, and modern React frontend.

🎯 Project Overview

Web3 Student Lab is a comprehensive learning platform that teaches blockchain development through hands-on courses. Students can enroll in courses, complete lessons, and earn verifiable certificates stored on the Stellar blockchain using Soroban smart contracts.

🏗️ Architecture

Monorepo Structure

web3-student-lab/
├── frontend/          # Next.js 16 + React 19
├── backend/           # Node.js + Express + Prisma
├── contracts/         # Rust + Soroban Smart Contracts
├── docs/              # Documentation
└── docker-compose.yml # Container orchestration

Technology Stack

Frontend:

• Next.js 16 (App Router)
• React 19
• TypeScript 5
• Tailwind CSS 4
• Axios
• @stellar/stellar-sdk

Backend:

• Node.js + Express
• TypeScript
• Prisma ORM
• PostgreSQL
• JWT Authentication
• bcryptjs

Smart Contracts:

• Rust
• Soroban SDK
• Stellar Blockchain

✅ Implementation Status

Frontend - COMPLETE ✅

• Authentication (Login/Register)
• Student Dashboard
• Course Catalog
• Course Enrollment
• Certificate Verification
• Responsive Design
• Dark Mode
• API Integration
• Blockchain Integration (Soroban ready)

Backend - COMPLETE ✅

• RESTful API
• JWT Authentication
• User Management
• Course Management
• Enrollment System
• Certificate Management
• Database Schema
• Middleware
• Error Handling

Smart Contract - READY ⚠️

• Certificate Contract (Rust)
• Issue Function
• Verify Function
• Deployment to Stellar (requires manual deployment)
• Integration with backend (placeholder functions)

🚀 Quick Start

Prerequisites

• Node.js 18+ and npm
• PostgreSQL 14+
• Rust (for contract development)
• Git

Option 1: Automated Setup (Recommended)

# From project root
./setup.sh

This script will:

1. Install all dependencies
2. Create environment files
3. Set up the database
4. Build the frontend
5. Provide next steps

Option 2: Manual Setup

1. Backend Setup

cd backend

# Install dependencies
npm install

# Create .env file
cp .env.example .env
# Edit .env with your database credentials

# Generate Prisma client
npx prisma generate

# Run migrations
npx prisma migrate dev

# Start server
npm run dev

Backend runs on: http://localhost:8080

2. Frontend Setup

cd frontend

# Install dependencies
npm install

# Create .env.local file
cp .env.local.example .env.local
# Edit if needed (default works for local development)

# Start development server
npm run dev

Frontend runs on: http://localhost:3000

3. Database Setup

If you need to set up PostgreSQL:

# Using Docker (recommended)
docker-compose up -d postgres

# Or install locally and update DATABASE_URL in backend/.env

📚 Features

For Students

1. Browse Courses

   • Search and filter courses
   • View detailed course information
   • See instructor details

2. Enroll & Learn

   • One-click enrollment
   • Track progress
   • Access course materials

3. Earn Certificates

   • Complete courses to earn certificates
   • Certificates stored on Stellar blockchain
   • Verifiable by anyone, anywhere

4. Verify Credentials

   • Public certificate verification
   • Instant blockchain lookup
   • Tamper-proof credentials

For Administrators

1. Course Management

   • Create/update courses
   • Manage instructors
   • Set credit hours

2. Student Management

   • View enrollments
   • Track progress
   • Issue certificates

3. Certificate Issuance

   • Issue certificates on blockchain
   • Bulk issuance support
   • Verification dashboard

🔐 Authentication

The platform uses JWT-based authentication:

1. User registers with email/password
2. Password hashed with bcrypt
3. JWT token generated and returned
4. Token stored in localStorage
5. Token attached to all API requests
6. Automatic token refresh on expiration

📦 API Endpoints

Authentication

• POST /api/auth/register - Register new student
• POST /api/auth/login - Student login
• GET /api/auth/me - Get current user

Courses

• GET /api/courses - List all courses
• GET /api/courses/:id - Get course details
• POST /api/courses - Create course (admin)
• PUT /api/courses/:id - Update course
• DELETE /api/courses/:id - Delete course

Enrollments

• GET /api/enrollments - List enrollments
• GET /api/enrollments/student/:id - Student's enrollments
• POST /api/enrollments - Enroll in course
• PUT /api/enrollments/:id - Update enrollment
• DELETE /api/enrollments/:id - Cancel enrollment

Certificates

• GET /api/certificates - List all certificates
• GET /api/certificates/:id - Get certificate
• GET /api/certificates/student/:id - Student's certificates
• POST /api/certificates - Issue certificate
• PUT /api/certificates/:id - Update certificate
• DELETE /api/certificates/:id - Revoke certificate

Feedback

• POST /api/feedback - Submit course feedback
• GET /api/feedback/course/:id - Course feedback
• GET /api/feedback/course/:id/summary - Feedback summary

Dashboard

• GET /api/dashboard/stats - Platform statistics
• GET /api/dashboard/student/:id - Student dashboard data

🔗 Blockchain Integration

Certificate Contract

The Soroban smart contract stores certificates immutably on Stellar:

#[contractimpl]
impl CertificateContract {
    pub fn issue(env: Env, symbol: Symbol, student: String, course_name: String) -> Certificate {
        // Issues certificate to blockchain
    }
    
    pub fn get_certificate(env: Env, symbol: Symbol) -> Certificate {
        // Retrieves certificate from blockchain
    }
}

Deploying the Contract

cd contracts

# Build contract
cargo build --target wasm32-unknown-unknown --release

# Deploy to Stellar testnet
soroban contract deploy \
  --wasm target/wasm32-unknown-unknown/release/certificate_contract.wasm \
  --source <your-account> \
  --network testnet

Update NEXT_PUBLIC_CERTIFICATE_CONTRACT_ID in frontend/.env.local after deployment.

🧪 Testing

Backend Tests

cd backend
npm test

Frontend Tests

cd frontend
npm test

Manual Testing Flow

1. Register account at /auth/register
2. Login at /auth/login
3. Browse courses at /courses
4. Enroll in a course
5. View dashboard at /dashboard
6. Verify certificate at /verify

📊 Database Schema

model Student {
  id        String   @id @default(cuid())
  email     String   @unique
  password  String
  firstName String
  lastName  String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  
  enrollments   Enrollment[]
  certificates  Certificate[]
  feedback      Feedback[]
}

model Course {
  id          String   @id @default(cuid())
  title       String
  description String?
  instructor  String
  credits     Int      @default(3)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt
  
  enrollments   Enrollment[]
  certificates  Certificate[]
  feedback      Feedback[]
}

model Certificate {
  id          String   @id @default(cuid())
  studentId   String
  courseId    String
  issuedAt    DateTime @default(now())
  certificateHash String?
  status      String   @default("pending")
  
  student     Student  @relation(fields: [studentId], references: [id])
  course      Course   @relation(fields: [courseId], references: [id])
}

model Enrollment {
  id         String   @id @default(cuid())
  studentId  String
  courseId   String
  enrolledAt DateTime @default(now())
  status     String   @default("active")
  
  student    Student  @relation(fields: [studentId], references: [id])
  course     Course   @relation(fields: [courseId], references: [id])
  
  @@unique([studentId, courseId])
}

model Feedback {
  id          String   @id @default(cuid())
  studentId   String
  courseId    String
  rating      Int
  review      String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt
  
  student     Student  @relation(fields: [studentId], references: [id])
  course      Course   @relation(fields: [courseId], references: [id])
  
  @@unique([studentId, courseId])
}

🌐 URLs

• Frontend: http://localhost:3000
• Backend API: http://localhost:8080
• API Health: http://localhost:8080/health
• API Docs: See docs/API_SCHEMA.md

📖 Documentation

• FRONTEND_IMPLEMENTATION_SUMMARY.md - Frontend details
• INTEGRATION_GUIDE.md - Full stack integration
• docs/API_SCHEMA.md - API response formats
• docs/ARCHITECTURE_DEEP_DIVE.md - System architecture
• SOROBAN_GUIDE.md - Smart contract development

🔧 Development Tools

Backend

• Prisma Studio: npx prisma studio
• Database migrations: npx prisma migrate dev

Frontend

• Build analyzer: npm run build
• Linting: npm run lint

Contracts

• Build: cargo build --release
• Test: cargo test
• Deploy: soroban contract deploy

🐛 Troubleshooting

Backend won't start

• Check PostgreSQL is running
• Verify DATABASE_URL in .env
• Run npx prisma generate

Frontend build errors

• Clear .next folder
• Delete node_modules and reinstall
• Check TypeScript version

Database connection issues

• Ensure PostgreSQL is running
• Check database credentials
• Verify database exists

🚀 Deployment

Frontend (Vercel)

cd frontend
vercel deploy --prod

Set environment variables in Vercel dashboard.

Backend (Railway/Heroku)

cd backend
# Connect to Railway or Heroku
# Deploy via Git or CLI

Database (Supabase/Neon)

Use managed PostgreSQL service for production.

📈 Future Enhancements

• Video lesson player
• Quiz system
• Discussion forums
• Gamification (badges, points)
• Social features
• Admin dashboard
• Analytics dashboard
• Email notifications
• Multi-language support
• Mobile app (React Native)

👥 Contributing

1. Fork the repository
2. Create feature branch (git checkout -b feature/amazing-feature)
3. Commit changes (git commit -m 'Add amazing feature')
4. Push to branch (git push origin feature/amazing-feature)
5. Open Pull Request

📄 License

MIT License - see LICENSE file

🙏 Acknowledgments

• Stellar Development Foundation for Soroban
• Next.js team for the amazing framework
• All contributors to this project

📞 Support

• Open an issue on GitHub
• Check documentation in /docs
• Contact: support@web3studentlab.com (placeholder)

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Web3 Student Lab - Empowering the next generation of blockchain developers 🚀

Built with ❤️ using Next.js, Node.js, PostgreSQL, and Soroban