import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:info_tren/api/station_data.dart';
import 'package:info_tren/models.dart';
import 'package:info_tren/pages/station_arrdep_page/view_station/view_station.dart';
import 'package:info_tren/pages/train_info_page/view_train/train_info.dart';
import 'package:info_tren/utils/default_ui_design.dart';
import 'package:info_tren/utils/iterable_extensions.dart';
import 'package:shared_preferences/shared_preferences.dart';

final sharedPreferencesProvider = Provider<SharedPreferences>(
  (_) => throw UnimplementedError('Please override in ProviderScope'),
);

final uiDesignProvider = Provider((ref) {
  final sharedPreferences = ref.watch(sharedPreferencesProvider);
  final stored = sharedPreferences.getString('uiDesign');
  final design = UiDesign.values.where((element) => element.name == stored).firstOrNull ?? defaultUiDesign;
  return design;
});
Future<void> setUiDesign(Ref ref, UiDesign? design) async {
  final sharedPreferences = ref.watch(sharedPreferencesProvider);
  if (design != null) {
    await sharedPreferences.setString('uiDesign', design.name);
  }
  else {
    await sharedPreferences.remove('uiDesign');
  }
  ref.invalidate(uiDesignProvider);
}

final trainInfoArgumentsProvider = Provider<TrainInfoArguments>(
  (_) => throw UnimplementedError('Please override in ProviderScope'),
);

final stationDataProvider = FutureProvider.family((ref, String stationName) => getStationData(stationName));
final viewStationArgumentsProvider = Provider<ViewStationArguments>(
  (_) => throw UnimplementedError('Please override in ProviderScope'),
);
final viewStationDataProvider = Provider((ref) {
  final args = ref.watch(viewStationArgumentsProvider);
  final data = ref.watch(stationDataProvider(args.stationName));
  return data;
});