TF-1018 Implement GetAppDashboardConfiguration interactor

lib/features/mailbox_dashboard/domain/state/get_app_dashboard_configuration_state.dart

@@ -0,0 +1,24 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:tmail_ui_user/features/mailbox_dashboard/domain/app_dashboard/linagora_applications.dart';
+
+class LoadingAppDashboardConfiguration extends UIState {}
+
+class GetAppDashboardConfigurationSuccess extends UIState {
+
+  final LinagoraApplications linagoraApplications;
+
+  GetAppDashboardConfigurationSuccess(this.linagoraApplications);
+
+  @override
+  List<Object> get props => [linagoraApplications];
+}
+
+class GetAppDashboardConfigurationFailure extends FeatureFailure {
+  final dynamic exception;
+
+  GetAppDashboardConfigurationFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}

lib/features/mailbox_dashboard/domain/usecases/get_app_dashboard_configuration_interactor.dart

@@ -0,0 +1,30 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:core/utils/app_logger.dart';
+import 'package:core/utils/config/app_config_loader.dart';
+import 'package:dartz/dartz.dart';
+import 'package:tmail_ui_user/features/mailbox_dashboard/domain/app_dashboard/app_dashboard_configuration_parser.dart';
+import 'package:tmail_ui_user/features/mailbox_dashboard/domain/app_dashboard/linagora_applications.dart';
+import 'package:tmail_ui_user/features/mailbox_dashboard/domain/state/get_app_dashboard_configuration_state.dart';
+
+class GetAppDashboardConfigurationInteractor {
+  final AppConfigLoader _appConfigLoader;
+
+  GetAppDashboardConfigurationInteractor(this._appConfigLoader);
+
+  Stream<Either<Failure, Success>> execute(String appDashboardConfigurationPath) async* {
+    try {
+      yield Right(LoadingAppDashboardConfiguration());
+
+      final linagoraApps = await _appConfigLoader.load<LinagoraApplications>(
+        appDashboardConfigurationPath,
+        AppDashboardConfigurationParser()
+      );
+
+      yield Right(GetAppDashboardConfigurationSuccess(linagoraApps));
+    } catch (e) {
+      logError('GetAppDashboardConfigurationInteractor::execute(): $e');
+      yield Left(GetAppDashboardConfigurationFailure(e));
+    }
+  }
+}