# Mobile and Desktop Apps Implementation Summary

## Overview

Complete implementation of mobile (Flutter) and desktop (Electron) applications for TimeTracker has been completed. Both apps integrate with the existing TimeTracker REST API v1.

## What Was Implemented

### Flutter Mobile App (`mobile/`)

#### Project Structure
- ✅ Clean architecture with data/domain/presentation layers
- ✅ State management using Riverpod
- ✅ Local database using Hive
- ✅ Secure storage for API tokens

#### Core Features
- ✅ Authentication with server URL and API token
- ✅ Timer start/stop functionality with real-time updates
- ✅ Project and task listing and selection
- ✅ Time entries viewing with calendar
- ✅ Settings screen with configuration options
- ✅ Offline storage with Hive
- ✅ Offline sync queue implementation
- ✅ Background tasks using WorkManager

#### Screens
- ✅ Splash screen with auth check
- ✅ Login screen with validation
- ✅ Home/Dashboard screen with timer status and summary
- ✅ Timer screen with project/task selection
- ✅ Projects screen with search
- ✅ Time Entries screen with calendar view
- ✅ Settings screen

#### State Management
- ✅ Timer provider with state management
- ✅ Projects provider
- ✅ Tasks provider
- ✅ Time entries provider

#### API Integration
- ✅ Complete API client with Dio
- ✅ Token-based authentication
- ✅ Error handling and retry logic
- ✅ All required endpoints implemented

### Electron Desktop App (`desktop/`)

#### Project Structure
- ✅ Main/renderer process separation
- ✅ Preload script for secure IPC
- ✅ System tray integration
- ✅ Window state management

#### Core Features
- ✅ Authentication with server URL and API token
- ✅ Timer start/stop functionality
- ✅ Project and task listing
- ✅ Time entries viewing
- ✅ Settings configuration
- ✅ Offline storage with IndexedDB (Dexie)
- ✅ System tray with timer controls
- ✅ Window state persistence

#### UI
- ✅ Modern, lightweight UI with vanilla JS/CSS
- ✅ Dashboard view
- ✅ Projects view
- ✅ Time entries view
- ✅ Settings view

#### API Integration
- ✅ Complete API client with Axios
- ✅ Token-based authentication
- ✅ Error handling
- ✅ All required endpoints implemented

#### System Integration
- ✅ System tray with menu
- ✅ Timer status in tray tooltip
- ✅ Window controls (minimize, maximize, close)
- ✅ IPC communication between processes

### Shared Components

#### Offline Support
- ✅ Local database for caching
- ✅ Sync queue for offline operations
- ✅ Automatic sync when online
- ✅ Conflict resolution (server takes precedence)

#### Build Configuration
- ✅ Flutter: pubspec.yaml with all dependencies
- ✅ Electron: package.json with electron-builder config
- ✅ Build configurations for all platforms

#### Documentation
- ✅ README files for both apps
- ✅ API integration guide
- ✅ Setup instructions

## Build Configurations

### Mobile
- ✅ Android: AndroidManifest.xml configured
- ✅ iOS: Info.plist configured
- ✅ Flutter dependencies defined

### Desktop
- ✅ Windows: NSIS installer configuration
- ✅ Linux: AppImage and .deb packages
- ✅ macOS: DMG installer configuration
- ✅ Electron-builder configuration

### CI/CD
- ✅ GitHub Actions workflows for mobile builds
- ✅ GitHub Actions workflows for desktop builds

## Testing

- ✅ Basic widget tests structure
- ✅ Model tests
- ✅ API client test structure
- ⚠️ Full test suite would need to be expanded (marked as pending in todos)

## Distribution

- ✅ Build configurations for all platforms
- ✅ CI/CD workflows for automated builds
- ⚠️ Actual store submission requires certificates and accounts (manual step)

## API Endpoints Used

All endpoints from `/api/v1/`:
- ✅ `GET /api/v1/info` - API info
- ✅ `GET /api/v1/timer/status` - Timer status
- ✅ `POST /api/v1/timer/start` - Start timer
- ✅ `POST /api/v1/timer/stop` - Stop timer
- ✅ `GET /api/v1/time-entries` - List entries
- ✅ `POST /api/v1/time-entries` - Create entry
- ✅ `PUT /api/v1/time-entries/{id}` - Update entry
- ✅ `DELETE /api/v1/time-entries/{id}` - Delete entry
- ✅ `GET /api/v1/projects` - List projects
- ✅ `GET /api/v1/tasks` - List tasks

## Dependencies

### Mobile (Flutter)
- dio: HTTP client
- flutter_riverpod: State management
- hive: Local database
- flutter_secure_storage: Secure token storage
- workmanager: Background tasks
- table_calendar: Calendar widget
- connectivity_plus: Network status

### Desktop (Electron)
- electron: Framework
- axios: HTTP client
- electron-store: Settings storage
- dexie: IndexedDB wrapper

## Next Steps (Optional Enhancements)

1. **Testing**: Expand test coverage with integration tests
2. **Push Notifications**: Implement FCM/APNS integration
3. **WebSocket Support**: Real-time updates without polling
4. **Manual Time Entry**: Form for adding time entries manually
5. **Reports**: View reports and analytics in apps
6. **Widgets**: iOS/Android home screen widgets
7. **Keyboard Shortcuts**: Global shortcuts for desktop app
8. **Auto-update**: Electron auto-updater implementation
9. **Code Signing**: Set up certificates for production builds
10. **App Store Submission**: Prepare for Play Store/App Store

## File Structure

```
mobile/
├── lib/
│   ├── main.dart
│   ├── core/ (config, constants, themes)
│   ├── data/ (api, models, local storage)
│   ├── domain/ (use cases)
│   ├── presentation/ (screens, widgets, providers)
│   └── utils/ (auth, helpers)
├── android/ (Android platform files)
├── ios/ (iOS platform files)
├── pubspec.yaml
└── README.md

desktop/
├── src/
│   ├── main/ (Electron main process)
│   ├── renderer/ (UI - HTML, CSS, JS)
│   └── shared/ (Shared code)
├── package.json
├── electron-builder.yml
└── README.md
```

## Version

Apps align with backend version: **4.9.16**

## Notes

- All implementations use the existing REST API - no backend changes required
- Secure storage is used for API tokens on all platforms
- Offline support allows apps to function without network connection
- Background sync ensures data consistency when connection is restored
- Both apps follow their respective platform guidelines (Material Design 3, HIG)
