feat:theme changing done

lib/feature/common/presentation/blocs/theme_bloc/theme_bloc.dart

@@ -0,0 +1,37 @@
+import 'package:food_delivery_client/food_delivery_client.dart';
+
+part 'theme_event.dart';
+
+part 'theme_state.dart';
+
+part 'theme_bloc.freezed.dart';
+
+@injectable
+class ThemeBloc extends Bloc<ThemeEvent, ThemeState> {
+  final StorageService _storageService;
+
+  ThemeBloc(this._storageService) : super(const ThemeState()) {
+    on<_Started>(_onStarted);
+    on<_Changed>(_onChanged);
+  }
+
+  void _onStarted(_Started event, Emitter<ThemeState> emit) {
+    final isDark = _storageService.getBool(key: AppLocaleKeys.theme);
+
+    if (isDark) {
+      emit(state.copyWith(themeMode: ThemeMode.dark));
+    } else {
+      emit(state.copyWith(themeMode: ThemeMode.light));
+    }
+  }
+
+  void _onChanged(_Changed event, Emitter<ThemeState> emit) {
+    if (state.themeMode == ThemeMode.light) {
+      _storageService.setBool(key: AppLocaleKeys.theme, value: true);
+      emit(state.copyWith(themeMode: ThemeMode.dark));
+    } else {
+      _storageService.setBool(key: AppLocaleKeys.theme, value: false);
+      emit(state.copyWith(themeMode: ThemeMode.light));
+    }
+  }
+}

lib/feature/common/presentation/blocs/theme_bloc/theme_event.dart

@@ -0,0 +1,8 @@
+part of 'theme_bloc.dart';
+
+@freezed
+class ThemeEvent with _$ThemeEvent {
+  const factory ThemeEvent.started() = _Started;
+  const factory ThemeEvent.changed() = _Changed;
+
+}

lib/feature/common/presentation/blocs/theme_bloc/theme_state.dart

@@ -0,0 +1,7 @@
+part of 'theme_bloc.dart';
+
+@freezed
+abstract class ThemeState with _$ThemeState {
+  const factory ThemeState({@Default(ThemeMode.light) ThemeMode themeMode}) =
+      _ThemeState;
+}