import 'package:flutter_test/flutter_test.dart';
import 'package:nontonki/core/data/models/drama.dart';
import 'package:nontonki/core/data/services/playback_queue.dart';

void main() {
  test('home feed advances between dramas, series player between episodes', () {
    final dramas = [_drama('a', 3), _drama('b', 2), _drama('c', 4)];

    final home = PlaybackQueue.home(dramas);
    expect(home.length, 3);
    expect(home.entryAt(0).drama.id, 'a');
    expect(home.entryAt(1).drama.id, 'b');
    expect(home.entryAt(1).episode.number, 1);
    expect(home.nextIndex(0), 1);
    expect(home.nextIndex(2), isNull);

    final series = PlaybackQueue.series(dramas[0]);
    expect(series.length, 3);
    expect(series.entryAt(0).drama.id, series.entryAt(1).drama.id);
    expect(series.entryAt(1).episode.number, 2);
    expect(series.nextIndex(0), 1);
    expect(series.nextIndex(2), isNull);
  });

  test('dramas without episodes are left out of the home queue', () {
    final home = PlaybackQueue.home([
      _drama('a', 2),
      Drama(
        id: 'empty',
        title: '没有剧集',
        synopsis: '',
        posterUrl: '/files/empty.jpg',
      ),
    ]);
    expect(home.length, 1);
    expect(home.entryAt(0).drama.id, 'a');
  });

  test('a list card with a preview episode plays on the home feed', () {
    final home = PlaybackQueue.home([
      Drama.fromCardJson(const {
        'id': 5,
        'title': '闪婚后',
        'cover': '/files/cover.jpg',
        'totalEpisodes': 77,
        'preview': {
          'id': 9,
          'number': 1,
          'title': '第 1 集',
          'isFree': true,
          'playUrl': '/files/episode/9.mp4',
        },
      }),
    ]);

    expect(home.length, 1);
    expect(home.entryAt(0).episode.videoUrl, '/files/episode/9.mp4');
  });
}

Drama _drama(String id, int episodeCount) => Drama(
  id: id,
  title: 'Drama $id',
  synopsis: '简介 $id',
  posterUrl: '/files/$id.jpg',
  episodes: [
    for (var index = 1; index <= episodeCount; index++)
      Episode(
        id: '$id-$index',
        number: index,
        title: '第 $index 集',
        isFree: true,
        videoUrl: 'https://example.test/$id-$index.mp4',
      ),
  ],
);