Compass app (#2446)

compass_app/app/lib/ui/auth/logout/view_models/logout_viewmodel.dart

@@ -0,0 +1,34 @@
+// Copyright 2024 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import '../../../../data/repositories/auth/auth_repository.dart';
+import '../../../../data/repositories/itinerary_config/itinerary_config_repository.dart';
+import '../../../../domain/models/itinerary_config/itinerary_config.dart';
+import '../../../../utils/command.dart';
+import '../../../../utils/result.dart';
+
+class LogoutViewModel {
+  LogoutViewModel({
+    required AuthRepository authRepository,
+    required ItineraryConfigRepository itineraryConfigRepository,
+  })  : _authLogoutRepository = authRepository,
+        _itineraryConfigRepository = itineraryConfigRepository {
+    logout = Command0(_logout);
+  }
+  final AuthRepository _authLogoutRepository;
+  final ItineraryConfigRepository _itineraryConfigRepository;
+  late Command0 logout;
+
+  Future<Result> _logout() async {
+    var result = await _authLogoutRepository.logout();
+    switch (result) {
+      case Ok<void>():
+        // clear stored itinerary config
+        return _itineraryConfigRepository
+            .setItineraryConfig(const ItineraryConfig());
+      case Error<void>():
+        return result;
+    }
+  }
+}