JALNETRA - Groundwater Monitoring & Recharge Estimation App

A comprehensive Flutter application for monitoring groundwater stations and estimating recharge rates using advanced sensor data analysis.

🚀 Features

• Real-time Monitoring: Live data from groundwater monitoring stations
• Interactive Maps: Google Maps integration with station markers
• Data Visualization: Time-series charts for water level, temperature, pH, and recharge rates
• Recharge Estimation: Multiple algorithms for groundwater recharge calculation
• Push Notifications: Alerts for station status and recharge rate changes
• Background Sync: Automatic data synchronization
• Secure Storage: Encrypted local data storage
• Offline Support: Local caching with Hive database

🏗️ Architecture

• MVVM Pattern: Clean separation of concerns
• State Management: Riverpod for reactive state management
• Navigation: go_router for declarative routing
• Local Storage: Hive for offline data persistence
• Networking: Dio for HTTP requests
• Maps: Google Maps Flutter plugin
• Charts: FL Chart for data visualization

📱 Screenshots

Screenshots will be added after UI implementation

🛠️ Setup Instructions

Prerequisites

• Flutter SDK (3.8.1 or higher)
• Dart SDK (3.0.0 or higher)
• Android Studio / VS Code
• Git

Installation

1. Clone the repository

   git clone <repository-url>
   cd jalnetra

2. Install dependencies

   flutter pub get

3. Generate code

   flutter packages pub run build_runner build

4. Configure Firebase (Optional)

   • Create a Firebase project
   • Add google-services.json to android/app/
   • Add GoogleService-Info.plist to ios/Runner/

5. Configure Google Maps (Required for maps)

   • Get Google Maps API key
   • Add to android/app/src/main/AndroidManifest.xml:

     <meta-data android:name="com.google.android.geo.API_KEY"
                android:value="YOUR_API_KEY"/>

   • Add to ios/Runner/AppDelegate.swift:

     GMSServices.provideAPIKey("YOUR_API_KEY")

Configuration

Backend API Configuration

1. Set API Base URL

   • Open lib/services/api_service.dart
   • Update _baseUrl constant:

     static const String _baseUrl = 'https://your-api-domain.com/v1';

2. Set API Key

   • Update _apiKey constant:

     static const String _apiKey = 'your-actual-api-key';

   • Or use secure storage for production:

     final apiKey = await SecureStorageService.instance.retrieve('api_key');

Map Provider Configuration

To switch from Google Maps to OpenStreetMap:

1. Update pubspec.yaml

   dependencies:
     # Remove: google_maps_flutter: ^2.6.1
     # Add: flutter_map: ^6.1.0

2. Update map implementation

   • Replace Google Maps widgets with Flutter Map widgets
   • Update lib/screens/home_screen.dart map implementation

Notification Configuration

1. Firebase Setup

   • Enable Firebase Cloud Messaging
   • Configure notification channels

2. Local Notifications

   • Update notification icons in android/app/src/main/res/
   • Configure notification permissions

Running the App

1. Debug Mode

   flutter run

2. Release Mode

   flutter run --release

3. Build APK

   flutter build apk --release

4. Build iOS

   flutter build ios --release

📁 Project Structure

lib/
├── main.dart                 # App entry point
├── models/                   # Data models
│   ├── station.dart         # Station model
│   ├── measurement.dart     # Measurement model
│   └── recharge_estimate.dart # Recharge estimate model
├── services/                # Business logic
│   └── api_service.dart     # API communication
├── providers/               # State management
│   ├── stations_provider.dart
│   └── measurements_provider.dart
├── screens/                 # UI screens
│   ├── home_screen.dart
│   ├── station_detail_screen.dart
│   └── settings_screen.dart
├── widgets/                 # Reusable widgets
│   ├── station_card.dart
│   ├── measurement_chart.dart
│   └── recharge_settings_dialog.dart
├── routes/                  # Navigation
│   └── app_router.dart
└── utils/                   # Utilities
    ├── secure_storage_service.dart
    └── notification_service.dart

🔧 Development

Code Generation

The project uses code generation for JSON serialization and Hive adapters:

# Generate code
flutter packages pub run build_runner build

# Watch for changes
flutter packages pub run build_runner watch

Testing

# Run unit tests
flutter test

# Run integration tests
flutter test integration_test/

Linting

# Analyze code
flutter analyze

# Fix formatting
dart format .

🚧 TODO Implementation Areas

High Priority

• WebSocket Connection: Implement real-time data streaming
• Recharge Algorithm: Implement actual recharge calculation logic
• API Integration: Connect to real backend endpoints
• Authentication: Add user login and authorization
• Data Validation: Add input validation and error handling

Medium Priority

• Offline Sync: Implement conflict resolution for offline data
• Push Notifications: Configure FCM and local notifications
• Background Tasks: Implement WorkManager and Background Fetch
• Data Export: Add CSV/JSON export functionality
• Settings Persistence: Save user preferences

Low Priority

• Dark Theme: Implement dark mode
• Accessibility: Add screen reader support
• Internationalization: Add multi-language support
• Analytics: Add usage tracking
• Crash Reporting: Implement error reporting

🔐 Security Considerations

• API Keys: Store sensitive keys in secure storage
• Data Encryption: Encrypt sensitive data at rest
• Network Security: Use HTTPS for all API calls
• Input Validation: Validate all user inputs
• Authentication: Implement proper user authentication

📊 Performance Optimization

• Image Caching: Implement image caching for station photos
• Data Pagination: Load data in chunks for large datasets
• Memory Management: Dispose controllers and streams properly
• Background Processing: Use isolates for heavy computations

🐛 Troubleshooting

Common Issues

1. Build Errors

   flutter clean
   flutter pub get
   flutter packages pub run build_runner build --delete-conflicting-outputs

2. Map Not Showing

   • Check API key configuration
   • Verify internet connection
   • Check platform-specific setup

3. Notifications Not Working

   • Verify Firebase configuration
   • Check notification permissions
   • Test on physical device

Debug Mode

Enable debug logging:

// In main.dart
Logger.level = Level.debug;

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🤝 Contributing

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

📞 Support

For support and questions:

• Create an issue in the repository
• Contact the development team
• Check the documentation

🔄 Version History

• v1.0.0 - Initial release with core features
• v1.1.0 - Added real-time monitoring
• v1.2.0 - Enhanced charts and visualization
• v1.3.0 - Added recharge estimation algorithms

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Note: This is a starter project with scaffolded implementations. Real functionality needs to be implemented based on your specific requirements and backend API.