import 'package:riverpod_annotation/riverpod_annotation.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:worldhopper/repositories/series_cover_page_repository.dart';

part 'cover_page_provider.g.dart';

/// Key for storing cover page preference in SharedPreferences
const String _coverPageKey = 'image_reader_first_page_is_cover';

/// Provider for "first page is cover" setting (global default)
@riverpod
class CoverPageNotifier extends _$CoverPageNotifier {
  @override
  bool build() {
    _load();
    return true; // Default: first page is cover
  }

  Future<void> _load() async {
    final prefs = await SharedPreferences.getInstance();
    final value = prefs.getBool(_coverPageKey);
    if (value != null) {
      state = value;
    }
  }

  Future<void> setCoverPage(bool value) async {
    state = value;
    final prefs = await SharedPreferences.getInstance();
    await prefs.setBool(_coverPageKey, value);
  }
}

/// Provider for per-series cover page overrides.
/// Parameterized by seriesFeedUrl. Returns null when no override is set.
@riverpod
class SeriesCoverPageNotifier extends _$SeriesCoverPageNotifier {
  @override
  bool? build(String seriesFeedUrl) {
    _load(seriesFeedUrl);
    return null;
  }

  Future<void> _load(String seriesFeedUrl) async {
    final repo = SeriesCoverPageRepository();
    final value = await repo.getCoverPage(seriesFeedUrl);
    state = value;
  }

  Future<void> setCoverPage(bool value) async {
    state = value;
    final repo = SeriesCoverPageRepository();
    await repo.setCoverPage(seriesFeedUrl, value);
  }
}