fix: default text direction not synced (#5405)

* fix: default text direction not synced

* test: annotate visibleForTesting

frontend/appflowy_flutter/lib/workspace/presentation/settings/pages/settings_workspace_view.dart

@@ -125,7 +125,7 @@ class SettingsWorkspaceView extends StatelessWidget {
                 title:
                     LocaleKeys.settings_workspacePage_textDirection_title.tr(),
                 children: const [
-                  _TextDirectionSelect(),
+                  TextDirectionSelect(),
                   EnableRTLItemsSwitcher(),
                 ],
               ),
@@ -387,19 +387,25 @@ class _WorkspaceIconSetting extends StatelessWidget {
   }
 }
 
-class _TextDirectionSelect extends StatelessWidget {
-  const _TextDirectionSelect();
+@visibleForTesting
+class TextDirectionSelect extends StatelessWidget {
+  const TextDirectionSelect({super.key});
 
   @override
   Widget build(BuildContext context) {
     return BlocBuilder<AppearanceSettingsCubit, AppearanceSettingsState>(
       builder: (context, state) {
-        final selectedItem = state.textDirection ?? AppFlowyTextDirection.auto;
+        final selectedItem = state.textDirection ?? AppFlowyTextDirection.ltr;
 
         return SettingsRadioSelect<AppFlowyTextDirection>(
-          onChanged: (item) => context
-              .read<AppearanceSettingsCubit>()
-              .setTextDirection(item.value),
+          onChanged: (item) {
+            context
+                .read<AppearanceSettingsCubit>()
+                .setTextDirection(item.value);
+            context
+                .read<DocumentAppearanceCubit>()
+                .syncDefaultTextDirection(item.value.name);
+          },
           items: [
             SettingsRadioItem(
               value: AppFlowyTextDirection.ltr,

frontend/appflowy_flutter/test/widget_test/direction_setting_test.dart

@@ -0,0 +1,159 @@
+import 'package:appflowy/workspace/presentation/settings/pages/settings_workspace_view.dart';
+import 'package:appflowy/workspace/presentation/settings/shared/settings_radio_select.dart';
+import 'package:flowy_infra/theme.dart';
+import 'package:flutter/material.dart';
+import 'package:appflowy/generated/locale_keys.g.dart';
+import 'package:appflowy/plugins/document/application/document_appearance_cubit.dart';
+import 'package:appflowy/workspace/application/settings/appearance/appearance_cubit.dart';
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
+import 'package:bloc_test/bloc_test.dart';
+import 'package:appflowy_backend/protobuf/flowy-user/user_setting.pb.dart';
+import 'package:appflowy/user/application/user_settings_service.dart';
+
+import '../util.dart';
+
+class MockAppearanceSettingsBloc
+    extends MockBloc<AppearanceSettingsCubit, AppearanceSettingsState>
+    implements AppearanceSettingsCubit {}
+
+class MockDocumentAppearanceCubit extends Mock
+    implements DocumentAppearanceCubit {}
+
+class MockDocumentAppearance extends Mock implements DocumentAppearance {}
+
+void main() {
+  late AppearanceSettingsPB appearanceSettings;
+  late DateTimeSettingsPB dateTimeSettings;
+
+  setUp(() async {
+    await AppFlowyUnitTest.ensureInitialized();
+    appearanceSettings =
+        await UserSettingsBackendService().getAppearanceSetting();
+    dateTimeSettings = await UserSettingsBackendService().getDateTimeSettings();
+  });
+
+  testWidgets('TextDirectionSelect update default text direction setting',
+      (WidgetTester tester) async {
+    final appearanceSettingsState = AppearanceSettingsState.initial(
+      AppTheme.fallback,
+      appearanceSettings.themeMode,
+      appearanceSettings.font,
+      appearanceSettings.monospaceFont,
+      appearanceSettings.layoutDirection,
+      appearanceSettings.textDirection,
+      appearanceSettings.enableRtlToolbarItems,
+      appearanceSettings.locale,
+      appearanceSettings.isMenuCollapsed,
+      appearanceSettings.menuOffset,
+      dateTimeSettings.dateFormat,
+      dateTimeSettings.timeFormat,
+      dateTimeSettings.timezoneId,
+      appearanceSettings.documentSetting.cursorColor.isEmpty
+          ? null
+          : Color(
+              int.parse(appearanceSettings.documentSetting.cursorColor),
+            ),
+      appearanceSettings.documentSetting.selectionColor.isEmpty
+          ? null
+          : Color(
+              int.parse(
+                appearanceSettings.documentSetting.selectionColor,
+              ),
+            ),
+      1.0,
+    );
+    final mockAppearanceSettingsBloc = MockAppearanceSettingsBloc();
+    when(() => mockAppearanceSettingsBloc.state).thenReturn(
+      appearanceSettingsState,
+    );
+
+    final mockDocumentAppearanceCubit = MockDocumentAppearanceCubit();
+    when(() => mockDocumentAppearanceCubit.stream).thenAnswer(
+      (_) => Stream.fromIterable([MockDocumentAppearance()]),
+    );
+
+    await tester.pumpWidget(
+      MultiBlocProvider(
+        providers: [
+          BlocProvider<AppearanceSettingsCubit>.value(
+            value: mockAppearanceSettingsBloc,
+          ),
+          BlocProvider<DocumentAppearanceCubit>.value(
+            value: mockDocumentAppearanceCubit,
+          ),
+        ],
+        child: MaterialApp(
+          theme: appearanceSettingsState.lightTheme,
+          home: MultiBlocProvider(
+            providers: [
+              BlocProvider<AppearanceSettingsCubit>.value(
+                value: mockAppearanceSettingsBloc,
+              ),
+              BlocProvider<DocumentAppearanceCubit>.value(
+                value: mockDocumentAppearanceCubit,
+              ),
+            ],
+            child: const Scaffold(
+              body: TextDirectionSelect(),
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(
+      find.text(
+        LocaleKeys.settings_workspacePage_textDirection_leftToRight.tr(),
+      ),
+      findsOne,
+    );
+    expect(
+      find.text(
+        LocaleKeys.settings_workspacePage_textDirection_rightToLeft.tr(),
+      ),
+      findsOne,
+    );
+    expect(
+      find.text(
+        LocaleKeys.settings_workspacePage_textDirection_auto.tr(),
+      ),
+      findsOne,
+    );
+
+    final radioSelectFinder =
+        find.byType(SettingsRadioSelect<AppFlowyTextDirection>);
+    expect(radioSelectFinder, findsOne);
+
+    when(
+      () => mockAppearanceSettingsBloc.setTextDirection(
+        any<AppFlowyTextDirection?>(),
+      ),
+    ).thenAnswer((_) async => {});
+    when(
+      () => mockDocumentAppearanceCubit.syncDefaultTextDirection(
+        any<String?>(),
+      ),
+    ).thenAnswer((_) async {});
+
+    final radioSelect = tester.widget(radioSelectFinder)
+        as SettingsRadioSelect<AppFlowyTextDirection>;
+    final rtlSelect = radioSelect.items
+        .firstWhere((select) => select.value == AppFlowyTextDirection.rtl);
+    radioSelect.onChanged(rtlSelect);
+
+    verify(
+      () => mockAppearanceSettingsBloc.setTextDirection(
+        any<AppFlowyTextDirection?>(),
+      ),
+    ).called(1);
+    verify(
+      () => mockDocumentAppearanceCubit.syncDefaultTextDirection(
+        any<String?>(),
+      ),
+    ).called(1);
+  });
+}