import 'package:flutter_test/flutter_test.dart';
import 'package:nontonki/core/data/models/drama.dart';
import 'package:nontonki/core/formatting/localized_content.dart';
import 'package:nontonki/l10n/app_localizations_en.dart';
import 'package:nontonki/l10n/app_localizations_zh.dart';

Drama _drama({required String id, String title = 'raw', String synopsis = 'raw'}) =>
    Drama(
      id: id,
      title: title,
      synopsis: synopsis,
      posterUrl: '/files/poster.png',
      episodes: const [],
    );

void main() {
  final en = AppLocalizationsEn();
  final zh = AppLocalizationsZh();

  test('each seeded drama maps onto its own localized copy', () {
    final signal = _drama(id: 'the-signal-demo');
    final city = _drama(id: 'city-lights-demo');
    final vengeance = _drama(id: 'vengeance-demo');

    expect(localizedDramaTitle(en, signal), en.dramaSignalTitle);
    expect(localizedDramaTitle(en, city), en.dramaCityTitle);
    expect(localizedDramaTitle(en, vengeance), en.dramaVengeanceTitle);

    expect(localizedDramaSynopsis(en, signal), en.dramaSignalSynopsis);
    expect(localizedDramaSynopsis(en, city), en.dramaCitySynopsis);
    expect(localizedDramaSynopsis(en, vengeance), en.dramaVengeanceSynopsis);
  });

  test('the mapping does not collapse two dramas onto one entry', () {
    final titles = {
      localizedDramaTitle(en, _drama(id: 'the-signal-demo')),
      localizedDramaTitle(en, _drama(id: 'city-lights-demo')),
      localizedDramaTitle(en, _drama(id: 'vengeance-demo')),
    };
    final synopses = {
      localizedDramaSynopsis(en, _drama(id: 'the-signal-demo')),
      localizedDramaSynopsis(en, _drama(id: 'city-lights-demo')),
      localizedDramaSynopsis(en, _drama(id: 'vengeance-demo')),
    };

    expect(titles, hasLength(3));
    expect(synopses, hasLength(3));
  });

  test('localized copy is translated rather than reused verbatim', () {
    final signal = _drama(id: 'the-signal-demo');

    expect(localizedDramaTitle(zh, signal), zh.dramaSignalTitle);
    expect(localizedDramaSynopsis(zh, signal), zh.dramaSignalSynopsis);
    expect(localizedDramaTitle(zh, signal), isNot(en.dramaSignalTitle));
  });

  test('an unknown drama keeps the catalog text in every locale', () {
    final custom = _drama(
      id: 'custom-demo',
      title: 'Custom Title',
      synopsis: 'Custom synopsis',
    );

    expect(localizedDramaTitle(en, custom), 'Custom Title');
    expect(localizedDramaTitle(zh, custom), 'Custom Title');
    expect(localizedDramaSynopsis(en, custom), 'Custom synopsis');
    expect(localizedDramaSynopsis(zh, custom), 'Custom synopsis');
  });

  test('the raw catalog text is ignored for a seeded drama', () {
    final signal = _drama(
      id: 'the-signal-demo',
      title: 'stale title',
      synopsis: 'stale synopsis',
    );

    expect(localizedDramaTitle(en, signal), isNot('stale title'));
    expect(localizedDramaSynopsis(en, signal), isNot('stale synopsis'));
  });

  test('episodes one to four use named titles', () {
    expect(localizedEpisodeTitle(en, 1), en.episodeOneTitle);
    expect(localizedEpisodeTitle(en, 2), en.episodeTwoTitle);
    expect(localizedEpisodeTitle(en, 3), en.episodeThreeTitle);
    expect(localizedEpisodeTitle(en, 4), en.episodeFourTitle);
  });

  test('later episodes fall back to a numbered label', () {
    for (final number in <int>[5, 12, 100]) {
      expect(localizedEpisodeTitle(en, number), en.episodeLabel(number));
      expect(localizedEpisodeTitle(en, number), contains('$number'));
    }
    expect(localizedEpisodeTitle(zh, 12), zh.episodeLabel(12));
  });
}