import 'package:fruitshorts/core/data/models/drama.dart';
import 'package:fruitshorts/core/data/models/home_feed.dart';
import 'package:fruitshorts/core/data/models/search_result.dart';
import 'package:fruitshorts/core/data/repositories/catalog_repository.dart';
import 'package:fruitshorts/core/data/repositories/search_repository.dart';

/// 测试用目录数据：三部分区里的短剧，标题与后端演示数据保持一致。
class FakeCatalogRepository implements CatalogRepository, SearchRepository {
  FakeCatalogRepository({List<Drama>? dramas, this.banners = const []})
    : dramas = dramas ?? demoDramas;

  final List<Drama> dramas;
  final List<FeedBanner> banners;

  @override
  Future<HomeFeed> fetchHomeFeed() async => _feed();

  @override
  Future<HomeFeed> fetchDiscoverFeed() async => _feed();

  @override
  Future<Drama> fetchDrama(String dramaId) async {
    return dramas.firstWhere((drama) => drama.id == dramaId);
  }

  @override
  Future<SearchResult> search(
    String keyword, {
    int pageIndex = 1,
    int pageSize = 20,
  }) async {
    final query = keyword.trim().toLowerCase();
    final hits = dramas.where((drama) {
      final haystack = [drama.title, drama.synopsis, drama.genre].join(' ');
      return haystack.toLowerCase().contains(query);
    }).toList();
    return SearchResult(total: hits.length, list: hits);
  }

  HomeFeed _feed() => HomeFeed(
    banners: banners,
    sections: [FeedSection(code: 'hot', title: '热门推荐', dramas: dramas)],
  );
}

final List<Drama> demoDramas = [
  _drama('the-signal-demo', 'The Signal', 'Suspense · Mystery', format: 1),
  _drama(
    'city-lights-demo',
    'City Lights & Velvet Nights',
    'Urban Romance',
    format: 8,
  ),
  _drama('vengeance-demo', 'Vengeance Rising', 'Action · Thriller', format: 15),
];

Drama _drama(String id, String title, String genre, {required int format}) =>
    Drama(
      id: id,
      title: title,
      synopsis: '$title synopsis',
      posterUrl: '/files/$id.png',
      genre: genre,
      language: 'id',
      detailLoaded: true,
      episodes: [
        for (var index = 0; index < 7; index++)
          Episode(
            id: '$id-${index + 1}',
            number: index + 1,
            title: 'Episode ${index + 1}',
            isFree: true,
            videoUrl: 'https://example.test/$format-$index.mp4',
          ),
      ],
    );