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🍽️ SmartQR – Digital Ordering System for Restaurants

Welcome to SmartQR – a B2B SaaS solution that enables restaurants, cafés, and bars to digitalize their ordering process. Guests simply scan a QR code at the table, browse the menu, and place orders directly from their smartphone.

🚀 Built by B21 Solutions
🌍 Deployed on STRATO Shared Hosting
💻 Frontend: Vite + React + TypeScript
🔧 Backend: PHP + MySQL (Shared-Hosting-friendly)

✨ Features

  • 📱 Customer App
  • Scan QR → Browse menu
  • Add items to cart
  • Place orders without needing an account

  • Sessionless flow with local storage

  • 🛠️ Admin Dashboard

  • Live order overview
  • Manage order status (new → in progress → served → paid)
  • Real-time table status

  • Sales overview & daily revenue

  • 🔄 Realtime Updates

  • Powered by Ably (or SSE fallback for shared hosting)

  • Instant order notifications for staff

  • 💳 Stripe Integration

  • Subscription-based SaaS model
  • Webhooks for subscription management

  • Feature flags per plan

  • 📊 Analytics (planned)

  • Peak hours
  • Best-selling items
  • Weekly/Monthly revenue charts

🏗️ Tech Stack

Layer Technology
Frontend Vite + React + TS
Styling Tailwind CSS
State Mgmt React Query / Zustand
Backend PHP 8.x + MySQL (PDO)
Hosting STRATO Shared Hosting
Realtime Ably / SSE fallback
Payments Stripe

📂 Repository Structure

.
├── /frontend           # React app (Vite + TS)
│   ├── src
│   └── public
├── /backend            # PHP backend (API)
│   ├── public          # index.php, .htaccess
│   ├── src             # Router, Services, Models
│   └── migrations      # SQL migrations
├── /docs               # Documentation (setup, onboarding, API)
└── README.md

🚀 Getting Started

1. Clone the Repo

git clone https://github.com/<org>/<repo>.git
cd smartqr

2. Frontend Setup

cd frontend
npm install
npm run dev

3. Backend Setup

  • Upload /backend/public to your STRATO webspace.
  • Configure database connection in config.php.
  • Run migrations from /backend/migrations.

📖 Documentation

🧑‍💻 Contributing

We ❤️ contributions!

  1. Fork the repo & create a feature branch (git checkout -b feature/my-feature)
  2. Commit your changes (git commit -m "Add new feature")
  3. Push to the branch (git push origin feature/my-feature)
  4. Create a Pull Request 🎉

👉 For details, check out our Onboarding Guide.

📅 Project Management

We use GitHub Issues for: - 🐞 Bug tracking
- 💡 Feature requests
- 📋 Task management

Each issue should be linked to a milestone & labeled accordingly.

🔒 Security

  • PDO prepared statements for all DB queries
  • Strict JSON response handling (never HTML)
  • CSRF protection for Admin UI
  • Rate limiting for API endpoints
  • HTTPS enforced

👥 Team

  • 🧑‍💻 Liridon Bytyqi – Founder & Lead Developer
  • 🌐 B21 Solutions – Software Company

📜 License

© 2025 B21 Solutions. All rights reserved.

Environment Configuration

Backend .env

Variable Description Example
APP_ENV Application environment name production
APP_DEBUG Enable verbose PHP errors false
APP_URL Public URL for the app shell https://app.smartqr.example
APP_SECRET Symmetric application secret (64+ chars) change-me
DB_HOST Database host localhost
DB_DATABASE Database schema smartqr
DB_USERNAME Database username smartqr
DB_PASSWORD Database password super-secure-password
JWT_SECRET JWT signing secret (64+ chars) change-me-jwt
JWT_ACCESS_TOKEN_TTL Access token lifetime in seconds 3600
JWT_REFRESH_TOKEN_TTL Refresh token lifetime in seconds 2592000
STRIPE_SECRET_KEY Stripe secret API key sk_live_xxx
STRIPE_PUBLIC_KEY Stripe publishable key pk_live_xxx
STRIPE_WEBHOOK_SECRET Stripe webhook signing secret whsec_xxx
RATE_LIMIT_REQUESTS Requests allowed per window 60
RATE_LIMIT_WINDOW Window length in seconds 60
REALTIME_PROVIDER Realtime transport provider ably
REALTIME_ABLY_API_KEY Ably API key ably-xxx
REALTIME_ABLY_APP_ID Ably app id ably-app
SMTP_FROM_EMAIL Default sender email noreply@smartqr.example
SMTP_FROM_NAME Default sender name SmartQR
CORS_ALLOWED_ORIGINS Comma separated allowed origins http://localhost:5173,https://app.smartqr.example
CORS_ALLOW_CREDENTIALS Allow cookies/headers across origins true
CORS_ALLOWED_METHODS Comma separated HTTP methods GET,POST,PATCH,DELETE,OPTIONS
CORS_ALLOWED_HEADERS Comma separated headers Content-Type,Authorization,X-Admin-Token
CORS_MAX_AGE Seconds to cache preflight 86400

Frontend .env

Variable Description Example
VITE_APP_NAME Display name for the UI SmartQR
VITE_APP_ENV Frontend environment label production
VITE_API_BASE_URL Base URL for API requests https://api.smartqr.example
VITE_API_TIMEOUT_MS Request timeout in milliseconds 15000
VITE_API_MAX_RETRIES Automatic retry attempts for transient errors 1
VITE_API_RETRY_DELAY_MS Delay between retries in milliseconds 500