AppFlowy/frontend/appflowy_flutter/lib/startup/tasks/app_widget.dart

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import 'package:appflowy/mobile/application/mobile_router.dart';
import 'package:appflowy/plugins/document/application/document_appearance_cubit.dart';
import 'package:appflowy/shared/feature_flags.dart';
import 'package:appflowy/startup/startup.dart';
import 'package:appflowy/user/application/reminder/reminder_bloc.dart';
import 'package:appflowy/user/application/user_settings_service.dart';
import 'package:appflowy/workspace/application/action_navigation/action_navigation_bloc.dart';
import 'package:appflowy/workspace/application/action_navigation/navigation_action.dart';
import 'package:appflowy/workspace/application/command_palette/command_palette_bloc.dart';
import 'package:appflowy/workspace/application/notification/notification_service.dart';
import 'package:appflowy/workspace/application/settings/appearance/appearance_cubit.dart';
import 'package:appflowy/workspace/application/settings/notifications/notification_settings_cubit.dart';
import 'package:appflowy/workspace/application/sidebar/rename_view/rename_view_bloc.dart';
import 'package:appflowy/workspace/application/view/view_ext.dart';
import 'package:appflowy/workspace/presentation/command_palette/command_palette.dart';
import 'package:appflowy_backend/log.dart';
import 'package:appflowy_backend/protobuf/flowy-user/protobuf.dart';
import 'package:appflowy_editor/appflowy_editor.dart' hide Log;
import 'package:easy_localization/easy_localization.dart';
import 'package:flowy_infra/theme.dart';
import 'package:flowy_infra_ui/flowy_infra_ui.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:go_router/go_router.dart';

import 'prelude.dart';

class InitAppWidgetTask extends LaunchTask {
  const InitAppWidgetTask();

  @override
  LaunchTaskType get type => LaunchTaskType.appLauncher;

  @override
  Future<void> initialize(LaunchContext context) async {
    WidgetsFlutterBinding.ensureInitialized();

    await NotificationService.initialize();

    final widget = context.getIt<EntryPoint>().create(context.config);
    final appearanceSetting =
        await UserSettingsBackendService().getAppearanceSetting();
    final dateTimeSettings =
        await UserSettingsBackendService().getDateTimeSettings();

    // If the passed-in context is not the same as the context of the
    // application widget, the application widget will be rebuilt.
    final app = ApplicationWidget(
      key: ValueKey(context),
      appearanceSetting: appearanceSetting,
      dateTimeSettings: dateTimeSettings,
      appTheme: await appTheme(appearanceSetting.theme),
      child: widget,
    );

    Bloc.observer = ApplicationBlocObserver();
    runApp(
      EasyLocalization(
        supportedLocales: const [
          // In alphabetical order
          Locale('am', 'ET'),
          Locale('ar', 'SA'),
          Locale('ca', 'ES'),
          Locale('cs', 'CZ'),
          Locale('ckb', 'KU'),
          Locale('de', 'DE'),
          Locale('en'),
          Locale('es', 'VE'),
          Locale('eu', 'ES'),
          Locale('el', 'GR'),
          Locale('fr', 'FR'),
          Locale('fr', 'CA'),
          Locale('hu', 'HU'),
          Locale('id', 'ID'),
          Locale('it', 'IT'),
          Locale('ja', 'JP'),
          Locale('ko', 'KR'),
          Locale('pl', 'PL'),
          Locale('pt', 'BR'),
          Locale('ru', 'RU'),
          Locale('sv', 'SE'),
          Locale('th', 'TH'),
          Locale('tr', 'TR'),
          Locale('uk', 'UA'),
          Locale('ur'),
          Locale('vi', 'VN'),
          Locale('zh', 'CN'),
          Locale('zh', 'TW'),
          Locale('fa'),
          Locale('hin'),
        ],
        path: 'assets/translations',
        fallbackLocale: const Locale('en'),
        useFallbackTranslations: true,
        child: app,
      ),
    );

    return;
  }

  @override
  Future<void> dispose() async {}
}

class ApplicationWidget extends StatefulWidget {
  const ApplicationWidget({
    super.key,
    required this.child,
    required this.appTheme,
    required this.appearanceSetting,
    required this.dateTimeSettings,
  });

  final Widget child;
  final AppTheme appTheme;
  final AppearanceSettingsPB appearanceSetting;
  final DateTimeSettingsPB dateTimeSettings;

  @override
  State<ApplicationWidget> createState() => _ApplicationWidgetState();
}

class _ApplicationWidgetState extends State<ApplicationWidget> {
  late final GoRouter routerConfig;

  final _commandPaletteNotifier = ValueNotifier<bool>(false);

  @override
  void initState() {
    super.initState();
    // Avoid rebuild routerConfig when the appTheme is changed.
    routerConfig = generateRouter(widget.child);
  }

  @override
  void dispose() {
    _commandPaletteNotifier.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MultiBlocProvider(
      providers: [
        if (FeatureFlag.search.isOn)
          BlocProvider<CommandPaletteBloc>(create: (_) => CommandPaletteBloc()),
        BlocProvider<AppearanceSettingsCubit>(
          create: (_) => AppearanceSettingsCubit(
            widget.appearanceSetting,
            widget.dateTimeSettings,
            widget.appTheme,
          )..readLocaleWhenAppLaunch(context),
        ),
        BlocProvider<NotificationSettingsCubit>(
          create: (_) => NotificationSettingsCubit(),
        ),
        BlocProvider<DocumentAppearanceCubit>(
          create: (_) => DocumentAppearanceCubit()..fetch(),
        ),
        BlocProvider.value(value: getIt<RenameViewBloc>()),
        BlocProvider.value(value: getIt<ActionNavigationBloc>()),
        BlocProvider.value(
          value: getIt<ReminderBloc>()..add(const ReminderEvent.started()),
        ),
      ],
      child: BlocListener<ActionNavigationBloc, ActionNavigationState>(
        listenWhen: (_, curr) => curr.action != null,
        listener: (context, state) {
          final action = state.action;
          WidgetsBinding.instance.addPostFrameCallback((_) {
            if (action?.type == ActionType.openView &&
                PlatformExtension.isDesktop) {
              final view = action!.arguments?[ActionArgumentKeys.view];
              if (view != null) {
                AppGlobals.rootNavKey.currentContext?.pushView(view);
              }
            } else if (action?.type == ActionType.openRow &&
                PlatformExtension.isMobile) {
              final view = action!.arguments?[ActionArgumentKeys.view];
              if (view != null) {
                final view = action.arguments?[ActionArgumentKeys.view];
                final rowId = action.arguments?[ActionArgumentKeys.rowId];
                AppGlobals.rootNavKey.currentContext?.pushView(view, {
                  PluginArgumentKeys.rowId: rowId,
                });
              }
            }
          });
        },
        child: BlocBuilder<AppearanceSettingsCubit, AppearanceSettingsState>(
          builder: (context, state) {
            _setSystemOverlayStyle(state);
            return MaterialApp.router(
              builder: (context, child) => MediaQuery(
                // use the 1.0 as the textScaleFactor to avoid the text size
                //  affected by the system setting.
                data: MediaQuery.of(context).copyWith(
                  textScaler: TextScaler.linear(state.textScaleFactor),
                ),
                child: overlayManagerBuilder(
                  context,
                  FeatureFlag.search.isOn
                      ? CommandPalette(
                          toggleNotifier: _commandPaletteNotifier,
                          child: child,
                        )
                      : child,
                ),
              ),
              debugShowCheckedModeBanner: false,
              theme: state.lightTheme,
              darkTheme: state.darkTheme,
              themeMode: state.themeMode,
              localizationsDelegates: context.localizationDelegates,
              supportedLocales: context.supportedLocales,
              locale: state.locale,
              routerConfig: routerConfig,
            );
          },
        ),
      ),
    );
  }

  void _setSystemOverlayStyle(AppearanceSettingsState state) {
    if (Platform.isAndroid) {
      SystemUiOverlayStyle style = SystemUiOverlayStyle.dark;
      final themeMode = state.themeMode;
      if (themeMode == ThemeMode.dark) {
        style = SystemUiOverlayStyle.light;
      } else if (themeMode == ThemeMode.light) {
        style = SystemUiOverlayStyle.dark;
      } else {
        final brightness = Theme.of(context).brightness;
        // reverse the brightness of the system status bar.
        style = brightness == Brightness.dark
            ? SystemUiOverlayStyle.light
            : SystemUiOverlayStyle.dark;
      }

      SystemChrome.setSystemUIOverlayStyle(
        style.copyWith(
          statusBarColor: Colors.transparent,
          systemNavigationBarColor: Colors.transparent,
        ),
      );
    }
  }
}

class AppGlobals {
  // static GlobalKey<ScaffoldMessengerState> scaffoldMessengerKey = GlobalKey();
  static GlobalKey<NavigatorState> rootNavKey = GlobalKey();
  static NavigatorState get nav => rootNavKey.currentState!;
}

class ApplicationBlocObserver extends BlocObserver {
  @override
  void onError(BlocBase bloc, Object error, StackTrace stackTrace) {
    Log.debug(error);
    super.onError(bloc, error, stackTrace);
  }
}

Future<AppTheme> appTheme(String themeName) async {
  if (themeName.isEmpty) {
    return AppTheme.fallback;
  } else {
    try {
      return await AppTheme.fromName(themeName);
    } catch (e) {
      return AppTheme.fallback;
    }
  }
}