Overview

• File: lib/main.dart

The main.dart file serves as the entry point for the HVC Mobile application. It initializes core services, sets up state management, and configures the application's lifecycle management.

Global Variables

bool isProd = true;
late String deviceId;
late String deviceAgent;
RxBool isInChat = false.obs;
RxBool isInCall = false.obs;
DbManager? dbManager;
late PackageInfo appInfo;
Logger log = Logger('HVC_MOBILE_LOGGER');

• isProd: Environment flag for production mode
• deviceId: Unique identifier for the device
• deviceAgent: Platform-specific user agent string
• isInChat/isInCall: Reactive state variables for chat and call status
• dbManager: Database manager instance
• appInfo: Package information
• log: Logger instance for application logging

Application Initialization

Main Function

The main() function is wrapped in runZonedGuarded for error handling and performs the following initializations:

1. Flutter Binding

   WidgetsFlutterBinding.ensureInitialized();

2. Logger Setup

   Logger.root.level = Level.ALL;

3. Storage Initialization

   await GetStorage.init();

4. Permission Requests The application requests the following permissions:

   • Camera
   • Microphone
   • Notifications
   • Bluetooth
   • Location

5. Database Initialization

   dbManager = await DbManager.create();

6. Device Information

   deviceId = await getDeviceId();
   deviceAgent = 'HvcMobile->${Platform.isIOS ? 'iOS' : 'Android'}';

7. Push Notifications Setup

   OneSignal.initialize('5bc6d3bd-8862-48c9-b172-435f8b3c75b4');
   OneSignal.Notifications.requestPermission(true);

Main Application Widget

MyApp Class

The MyApp class extends StatefulWidget and manages the application's state and theme.

Controllers

The following controllers are initialized using GetX:

final authController = Get.put(AuthController());
final contactsController = Get.put(ContactsController());
final schedulesController = Get.put(EventsController());
final mediaController = Get.put(MediaController());
final meetingsController = Get.put(MeetingsController());
final realTimeController = Get.put(RealTimeController());
final messagesController = Get.put(MessagesController());
final settingsController = Get.put(SettingsController());

Build Method

The build method configures:

• Theme settings
• Route management
• Initial page selection based on authentication state
• Controller callbacks and event handlers

Lifecycle Management

App Lifecycle States

The application handles the following lifecycle states:

1. Inactive

   case AppLifecycleState.inactive:
     print('appLifeCycleState inactive');
     break;

2. Resumed

   case AppLifecycleState.resumed:
     if (isLoggedIn()) {
       realTimeController.callHi('AppLifecycleState.resumed');
     }
     if (isFromBackground && _isBioActivated) {
       Get.offAllNamed(LoginPage.routeName);
       isFromBackground = false;
     }
     break;

3. Paused

   case AppLifecycleState.paused:
     isFromBackground = true;
     break;

4. Detached

   case AppLifecycleState.detached:
     dbManager?.store.close();
     break;

State Management

Authentication State

var firstPage = (isBioTokenValid() || !isLoggedIn()) || !isRealUser
    ? LoginPage()
    : const MainPage();

Logout Handling

authController.doOnLogout = () {
  try {
    contactsController.clearAll();
    schedulesController.events.clear();
    meetingsController.messages.clear();
    messagesController.messages.clear();
    messagesController.chatList.clear();
    realTimeController.disconnectSignalR();
    realTimeController.onClose();
    realTimeController.urlToUse = '';
    realTimeController.serverUrl = null;
    realTimeController.token = null;
    setState(() {});
  } catch (e) {
    logInfo(e);
  }
};

Security Features

Screen Protection

ScreenProtector.preventScreenshotOff();

Biometric Authentication

bool get _isBioActivated => isBioEnabled && isBioTokenValid();

Push Notifications

OneSignal Configuration

OneSignal.Debug.setLogLevel(OSLogLevel.error);
OneSignal.initialize('xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx');
OneSignal.Notifications.requestPermission(true);