// Shared models and source-adapter contract (port of cxyz `sources.js`).

enum SourceId {
  comicland,
  mangaread,
  mangatown;

  String get id => name;

  String get label {
    switch (this) {
      case SourceId.comicland:
        return 'ComicLand';
      case SourceId.mangaread:
        return 'MangaRead';
      case SourceId.mangatown:
        return 'MangaTown';
    }
  }

  /// Bundled favicon asset (not fetched at runtime).
  String get logoAsset => 'assets/sources/$name.png';

  static SourceId? tryParse(String raw) {
    final key = raw.trim().toLowerCase();
    for (final id in SourceId.values) {
      if (id.name == key) return id;
    }
    return null;
  }
}

/// Browse menus a source may expose on its Catalog home.
enum CatalogMenuKind {
  popular,
  latest,
  official,
  uncensored,
  recommended,
  search,
  hotToday,
  hotWeek,
  hotMonth,
  directory;

  String get pathSegment => name;
}

/// Optional directory filters (MangaTown). Segment `0` means All.
class CatalogBrowseParams {
  const CatalogBrowseParams({
    this.demographic = '0',
    this.genre = '0',
    this.status = '0',
    this.initial = '0',
  });

  final String demographic;
  final String genre;
  final String status;
  final String initial;

  CatalogBrowseParams copyWith({
    String? demographic,
    String? genre,
    String? status,
    String? initial,
  }) {
    return CatalogBrowseParams(
      demographic: demographic ?? this.demographic,
      genre: genre ?? this.genre,
      status: status ?? this.status,
      initial: initial ?? this.initial,
    );
  }

  @override
  bool operator ==(Object other) {
    return other is CatalogBrowseParams &&
        other.demographic == demographic &&
        other.genre == genre &&
        other.status == status &&
        other.initial == initial;
  }

  @override
  int get hashCode => Object.hash(demographic, genre, status, initial);
}

class CatalogMenu {
  const CatalogMenu({required this.kind, required this.title});

  final CatalogMenuKind kind;
  final String title;
}

class CatalogComic {
  const CatalogComic({
    required this.source,
    required this.slug,
    required this.title,
    required this.listingUrl,
    this.coverUrl,
    this.description,
    this.rating,
  });

  final SourceId source;
  final String slug;
  final String title;
  final String listingUrl;
  final String? coverUrl;
  final String? description;
  final double? rating;
}

class ChapterLink {
  const ChapterLink({
    required this.url,
    required this.title,
    required this.chapterKey,
    this.chapterNumber,
  });

  final String url;
  final String title;
  final String chapterKey;
  final String? chapterNumber;
}

class SeriesDetail {
  const SeriesDetail({
    required this.source,
    required this.listingUrl,
    required this.slug,
    required this.title,
    required this.chapters,
    this.coverUrl,
    this.description,
  });

  final SourceId source;
  final String listingUrl;
  final String slug;
  final String title;
  final String? coverUrl;
  final String? description;
  final List<ChapterLink> chapters;
}

/// Site adapter: per-source catalog menus + series + page URLs.
abstract class ComicSource {
  SourceId get id;

  String get displayName;

  String get blurb;

  /// Menus on this source’s Catalog home. Omit unsupported feeds (e.g. no search).
  List<CatalogMenu> get catalogMenus;

  /// Headers for page/CDN image requests.
  Map<String, String> get imageHeaders;

  Future<List<CatalogComic>> loadCatalog(
    CatalogMenuKind kind, {
    String query = '',
    int offset = 0,
    int limit = 30,
    CatalogBrowseParams? browse,
  });

  Future<SeriesDetail> fetchSeries(String listingUrl);

  Future<List<String>> fetchPageUrls(String chapterUrl);
}