Remote config Method

main.dart

Future<RemoteConfig> setupRemoteConfig() async {
  await Firebase.initializeApp();
  final RemoteConfig remoteConfig = await RemoteConfig.instance;
  remoteConfig.setConfigSettings(RemoteConfigSettings(debugMode: true));
  remoteConfig.setDefaults(<String, dynamic>{
    'primary_colour': 0xFFB74093,
    'text_body_colour': 0xFFB71000,
    'appbar_colour':  0xFFB71000,
    'theme': 'system',
    'enable_custom_theme': false,
  });

  try {
    // Using default duration to force fetching from remote server.
    await remoteConfig.fetch(expiration: const Duration(seconds: 0));
    await remoteConfig.activateFetched();

    bool enableCustomTheme = await remoteConfig.getBool('enable_custom_theme');
    int primaryColour = await remoteConfig.getInt('primary_colour');
    int textBodyColour = await remoteConfig.getInt('text_body_colour');
    int appBarColour = await remoteConfig.getInt('appbar_colour');
    String theme = await remoteConfig.getString('theme');

    if (enableCustomTheme) {
      switch (theme) {
        case 'dark':
          {
            Get.changeTheme(ThemeData.dark().copyWith(
              appBarTheme: AppBarTheme(color: Color(appBarColour)),
              primaryColor: Color(primaryColour),
              textTheme: TextTheme(
                bodyText1: TextStyle(),
                bodyText2: TextStyle(),
              ).apply(
                bodyColor: Color(textBodyColour),
                displayColor: Color(textBodyColour),
              ),
            ));
          }
          break;

        case 'light':
          {
            Get.changeTheme(ThemeData.light().copyWith(
              appBarTheme: AppBarTheme(color: Color(appBarColour)),
              primaryColor: Color(primaryColour),
              textTheme: TextTheme(
                bodyText1: TextStyle(),
                bodyText2: TextStyle(),
              ).apply(
                bodyColor: Color(textBodyColour),
                displayColor: Color(textBodyColour),
              ),
            ));
          }
          break;
        default:
          {
            //statements;
          }
          break;
      }
    }

    print('cloud app theme ${enableCustomTheme}');
    print('cloud app theme ${theme}');
  } on FetchThrottledException catch (exception) {
    print(exception);
  } catch (exception) {
    print('Unable to fetch remote config. Cached or default values will be '
        'used');
  }

  return remoteConfig;
}