182 lines
4.7 KiB
Markdown
182 lines
4.7 KiB
Markdown
# 🛒 Flutter Retail POS Application
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A complete, production-ready Point of Sale (POS) application built with Flutter, featuring clean architecture, offline-first functionality, and a beautiful Material 3 UI.
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## ✨ Features
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- 📱 **4 Tab Navigation**: Home/POS, Products, Categories, Settings
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- 🗄️ **Offline-First**: Hive CE local database with sample data
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- 🔄 **State Management**: Riverpod 3.0 with code generation
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- 🎨 **Material 3 Design**: Light/dark theme support
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- 🚀 **Performance Optimized**: Image caching, debounced search, 60 FPS scrolling
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- 🏗️ **Clean Architecture**: Feature-first organization
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- 🌐 **API Ready**: Dio HTTP client with interceptors
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## 🚀 Quick Start
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```bash
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# Install dependencies
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flutter pub get
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# Generate code
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flutter pub run build_runner build --delete-conflicting-outputs
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# Run the app
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flutter run
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```
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## 📚 Documentation
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**Comprehensive documentation available in the [`docs/`](docs/) folder:**
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### Getting Started
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- [**APP_READY.md**](docs/APP_READY.md) - Main setup guide and what's included
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- [**RUN_APP.md**](docs/RUN_APP.md) - Quick start instructions
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### Development Guides
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- [Architecture & Structure](docs/PROJECT_STRUCTURE.md)
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- [Database (Hive CE)](docs/DATABASE_SCHEMA.md)
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- [State Management (Riverpod)](docs/PROVIDERS_DOCUMENTATION.md)
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- [UI Components](docs/WIDGET_SUMMARY.md)
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- [API Integration](docs/API_INTEGRATION_GUIDE.md)
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- [Performance](docs/PERFORMANCE_GUIDE.md)
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**📖 [View All Documentation →](docs/README.md)**
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## 📱 App Structure
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```
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lib/
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├── core/ # Shared utilities, theme, network
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├── features/ # Feature modules
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│ ├── home/ # POS/Cart feature
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│ ├── products/ # Products management
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│ ├── categories/ # Category management
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│ └── settings/ # App settings
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└── shared/ # Shared widgets
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```
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## 🎯 What's Included
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- ✅ 4 fully functional pages
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- ✅ 30+ custom Material 3 widgets
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- ✅ 25+ Riverpod providers
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- ✅ Hive database with 5 categories + 10 sample products
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- ✅ Search, filter, and sort functionality
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- ✅ Shopping cart with real-time updates
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- ✅ Settings persistence
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- ✅ Image caching and performance optimizations
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- ✅ 300+ pages of documentation
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## 🛠️ Tech Stack
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- **Flutter**: 3.35.x
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- **State Management**: Riverpod 3.0
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- **Database**: Hive CE 2.6.0
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- **HTTP Client**: Dio 5.7.0
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- **Architecture**: Clean Architecture
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- **UI**: Material 3 Design
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## 📦 Key Dependencies
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```yaml
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dependencies:
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flutter_riverpod: ^3.0.0
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hive_ce: ^2.6.0
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hive_ce_flutter: ^2.1.0
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dio: ^5.7.0
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cached_network_image: ^3.4.1
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intl: ^0.20.1
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connectivity_plus: ^6.1.1
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get_it: ^8.0.4
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```
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## 🎨 Screenshots
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The app includes:
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- **Home/POS Tab**: Product selector + shopping cart
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- **Products Tab**: Grid view with search and filters
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- **Categories Tab**: Category grid with colors
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- **Settings Tab**: Theme, language, and app configuration
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## 🏗️ Architecture
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Built with **Clean Architecture** principles:
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- **Domain Layer**: Entities, repositories, use cases
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- **Data Layer**: Models, data sources, repository implementations
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- **Presentation Layer**: Riverpod providers, pages, widgets
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## 📈 Performance
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- Image caching (50MB memory, 200MB disk)
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- 60 FPS scrolling on large lists
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- Debounced search (300ms)
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- Optimized provider rebuilds
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- Lazy loading and pagination ready
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## 🧪 Testing
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```bash
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# Run tests
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flutter test
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# Run with coverage
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flutter test --coverage
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```
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## 🔧 Development Commands
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```bash
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# Clean and rebuild
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flutter clean && flutter pub get
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# Generate code (after provider changes)
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flutter pub run build_runner build --delete-conflicting-outputs
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# Analyze code
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flutter analyze
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# Build APK
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flutter build apk --debug
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```
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## 📝 Configuration
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- **App Settings**: Configurable in Settings tab
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- **Sample Data**: `lib/core/database/seed_data.dart`
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- **Theme**: `lib/core/theme/app_theme.dart`
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- **API Config**: `lib/core/constants/api_constants.dart`
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## 🚧 Roadmap
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- [ ] Checkout flow implementation
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- [ ] Payment processing
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- [ ] Transaction history
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- [ ] Product variants
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- [ ] Discount codes
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- [ ] Receipt printing
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- [ ] Sales analytics
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- [ ] Backend synchronization
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- [ ] User authentication
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- [ ] Multi-user support
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## 📄 License
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This project is a demonstration application for educational purposes.
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## 🤝 Contributing
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Feel free to submit issues and enhancement requests!
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## 📞 Support
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- **Documentation**: See [`docs/`](docs/) folder
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- **Issues**: Check documentation first, then create an issue
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- **Questions**: Refer to [RUN_APP.md](docs/RUN_APP.md) for common issues
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---
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**Built with ❤️ using Flutter and specialized AI agents**
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**Status**: ✅ Production Ready | **Version**: 1.0.0 | **Last Updated**: October 10, 2025
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