A comprehensive Progressive Web Application (PWA) built with Ionic 8 and React for government invoice billing with advanced offline capabilities, modern UI/UX, and cross-platform compatibility.
The Government Billing Solution MVP is a modern, feature-rich billing application designed specifically for government agencies and public sector organizations. Built as a Progressive Web App, it provides a native app-like experience while maintaining web accessibility and cross-platform compatibility.
flowchart TD
A([💻 Device Support]) --> B[Desktop Web]
A --> C[Android]
A --> D[iOS]
A --> E[PWA]
src/
├── components/ # Reusable UI components
│ ├── Files/ # File management components
│ ├── FileMenu/ # File operations menu
│ ├── Menu/ # Application menu
│ ├── socialcalc/ # Spreadsheet engine
│ └── Storage/ # Local storage management
├── contexts/ # React contexts for state management
├── hooks/ # Custom React hooks
├── pages/ # Main application pages
├── services/ # Application services
├── theme/ # CSS themes and variables
└── utils/ # Utility functions
| # | Feature | Description | Documentation |
|---|---|---|---|
| 1 | Autosave Functionality | Automatic saving with configurable intervals and manual save options | 📄 View Details |
| 2 | Dark Mode Theme | Complete dark/light theme switching with system preference detection | 📄 View Details |
| 3 | Logo Integration | Company logo upload, management, and invoice integration | 📄 View Details |
| 4 | Advanced Cell Styling | Rich text formatting, colors, borders, and alignment options | 📄 View Details |
| 5 | Export Functionality | PDF, CSV, and multi-sheet export with mobile sharing support | 📄 View Details |
| 6 | Camera Integration | Photo capture for receipts and documentation using device camera | 📄 View Details |
| 7 | App Icons & Splash | Professional branding with adaptive icons and splash screens | 📄 View Details |
| 8 | Digital Signatures | Electronic signature capture and integration into invoices | 📄 View Details |
| 9 | Storage Management | Intelligent quota handling and storage optimization | 📄 View Details |
| 10 | PWA & Ionic 8 Upgrade | Progressive Web App capabilities with latest Ionic framework | 📄 View Details |
| 11 | Bulk File Operations | Save all to server & move all from server with progress tracking | 📄 View Details |
| 12 | Starknet Integration | Blockchain file storage with IPFS, token subscriptions, and Web3 features | 📄 View Details |
flowchart TD
A[💻 Offline Features] --> B[Export]
A --> C[Insert Images]
A --> D[Frontend]
%% Export branch
B --> E[Export CSV]
B --> F[Export pdf]
E --> G[Single Sheet]
E --> H[Full Workbook]
%% Insert Images branch
C --> I[Add Logo]
C --> J[Create Signature]
C --> K[Add Signature]
%% Frontend branch
D --> L[Sheet Styles]
D --> M[Autosave]
D --> N[Dark Mode]
flowchart TD
A([☁️ Cloud Features]) --> B[Export Pdf]
A --> C[Cloud Sync]
A --> D[Multi Save/Retrieve]
C --> F[Save]
C --> G[Retrieve]
flowchart TD
A([⛓️ Starknet Integration]) --> B[Subscription Plans]
A --> C[Blockchain Sync]
A --> D[IPFS Storage]
B --> G[5 Files, 1 PPT]
B --> H[50 Files, 10 PPT]
B --> I[250 Files, 50 PPT]
C --> E[Save]
C --> F[Retrieve]
- Offline Functionality: Full app functionality without internet connection
- App Installation: Install directly from browser with native app experience
- Background Sync: Sync data when connection is restored
- Push Notifications: Local notifications for important events
- App Shortcuts: Quick access to create invoice, view invoices, and manage customers
- Standalone Display: Full-screen app experience when installed
- App-like UI: Native-feeling interface with proper theming
- Load Times: Measure initial load and navigation performance
- Cache Hit Rates: Monitor offline capability effectiveness
- Storage Usage: Track local storage and quota usage
- React 18.2.0 - Modern UI library with hooks and concurrent features
- TypeScript 5.1.6 - Type-safe development environment
- Ionic 8.0.0 - Cross-platform UI components and native app features
- Vite 5.0.0 - Fast build tool and development server
- Vite PWA Plugin 0.19.0 - Progressive Web App capabilities
- Capacitor 6.0.0 - Native app deployment for iOS and Android
- Capacitor Plugins - Camera, filesystem, preferences, and sharing capabilities
- SocialCalc - Powerful spreadsheet engine for invoice creation and calculation
- Custom Extensions - Enhanced functionality for government billing needs
- Node.js 16+ (LTS recommended)
- npm 8+ or yarn 1.22+
# Clone the repository
git clone https://github.com/<your_username>/<repo_name>.git
cd <repo_name>
# Install dependencies
npm install
# Generate PWA assets (icons, manifest)
npm run generate-pwa-assets
# Start development server
npm run dev
or ionic serve
# Build for production
npm run build
or ionic build
# Preview production build
npm run preview# Add Capacitor (if not already added)
ionic integrations enable capacitor
# Add mobile platforms
npx cap add android
npx cap add ios
# Sync web app with native platforms
npx cap sync
# Open in native IDEs
npx cap open android
npx cap open ios
# (Optional) Run on mobile
ionic capacitor run android -l --external
ionic capacitor run ios -l --external- Fork the repository
- Create your feature branch (
git checkout -b feature/AmazingFeature) - Commit your changes (
git commit -m 'Add some AmazingFeature') - Push to the branch (
git push origin feature/AmazingFeature) - Open a Pull Request
This project is licensed under the MIT License - see the LICENSE file for details.
- Built with Ionic Framework
- Powered by React
- Spreadsheet functionality by SocialCalc
- PWA capabilities with Vite PWA Plugin
For support, email the Contributor [[email protected]] or create an issue in this repository.
Made with ❤️ under C4GT DMP'25 Program