TF-2901 Create before unload manager to handle before log out callbacks

lib/features/base/base_controller.dart

@@ -23,6 +23,7 @@ import 'package:jmap_dart_client/jmap/core/capability/capability_identifier.dart
 import 'package:jmap_dart_client/jmap/core/session/session.dart';
 import 'package:model/account/authentication_type.dart';
 import 'package:rule_filter/rule_filter/capability_rule_filter.dart';
+import 'package:tmail_ui_user/features/base/before_unload_manager.dart';
 import 'package:tmail_ui_user/features/base/mixin/message_dialog_action_mixin.dart';
 import 'package:tmail_ui_user/features/base/mixin/popup_context_menu_action_mixin.dart';
 import 'package:tmail_ui_user/features/caching/caching_manager.dart';
@@ -169,7 +170,14 @@ abstract class BaseController extends GetxController
     if (!authorizationInterceptors.isAppRunning) {
       return;
     }
+    _executeBeforeUnloadAndLogOut(exception);
+  }
+
+  Future<void> _executeBeforeUnloadAndLogOut(Exception? exception) async {
     if (exception is BadCredentialsException || exception is ConnectionError) {
+      if (PlatformInfo.isWeb) {
+        await executeBeforeUnload();
+      }
       clearDataAndGoToLoginPage();
     }
   }
@@ -334,6 +342,11 @@ abstract class BaseController extends GetxController
     }
   }
 
+  Future<void> executeBeforeUnload() async {
+    final beforeUnloadManager = getBinding<BeforeUnloadManager>();
+    await beforeUnloadManager?.executeBeforeUnloadListeners();
+  }
+
   Future<void> clearDataAndGoToLoginPage() async {
     log('BaseController::clearDataAndGoToLoginPage:');
     await clearAllData();

lib/features/base/before_unload_handler.dart

@@ -0,0 +1,3 @@
+abstract class BeforeUnloadHandler {
+  Future<void> onBeforeUnload();
+}

lib/features/base/before_unload_manager.dart

@@ -0,0 +1,24 @@
+import 'package:core/utils/app_logger.dart';
+
+typedef BeforeUnloadListener = Future<void> Function();
+
+class BeforeUnloadManager {
+  static final BeforeUnloadManager _instance = BeforeUnloadManager._();
+  factory BeforeUnloadManager() => _instance;
+  BeforeUnloadManager._();
+
+  final _listeners = <BeforeUnloadListener>[];
+
+  void addListener(BeforeUnloadListener listener) {
+    _listeners.add(listener);
+  }
+
+  void removeListener(BeforeUnloadListener listener) {
+    _listeners.remove(listener);
+  }
+
+  Future<void> executeBeforeUnloadListeners() async {
+    await Future.wait(_listeners.map((listener) => listener.call()))
+      .onError((error, stackTrace) => [logError(error.toString())]);
+  }
+}

lib/main/bindings/core/core_bindings.dart

@@ -12,6 +12,7 @@ import 'package:device_info_plus/device_info_plus.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:get/get.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:tmail_ui_user/features/base/before_unload_manager.dart';
 import 'package:tmail_ui_user/features/sending_queue/presentation/utils/sending_queue_isolate_manager.dart';
 import 'package:tmail_ui_user/main/utils/app_config.dart';
 import 'package:tmail_ui_user/main/utils/email_receive_manager.dart';
@@ -64,6 +65,7 @@ class CoreBindings extends Bindings {
     Get.put(FileUtils());
     Get.put(PrintUtils());
     Get.put(ApplicationManager(Get.find<DeviceInfoPlugin>()));
+    Get.put(BeforeUnloadManager());
   }
 
   void _bindingIsolate() {