// Author: fruit.com.cn

import 'dart:async';

import 'package:flutter_test/flutter_test.dart';
import 'package:fruitshorts/core/data/models/interaction.dart';
import 'package:fruitshorts/core/data/remote/api_client.dart';
import 'package:fruitshorts/core/data/services/interaction_controller.dart';

import '../support/fake_interaction_repositories.dart';

void main() {
  test('should_update_drama_like_optimistically_and_use_server_state_when_toggle_succeeds', () async {
    final repository = FakeInteractionRepository();
    final gate = Completer<void>();
    repository.likeGate = gate;
    final controller = InteractionController(repository);

    final future = controller.toggleDramaLike('5');
    expect(controller.isLiked('5'), isTrue);
    expect(repository.likeTargets, ['DRAMA:5']);

    repository.nextLikeResult = const LikeToggleResult(liked: false, count: 0);
    gate.complete();
    final result = await future;

    expect(result.isSuccess, isTrue);
    expect(controller.isLiked('5'), isFalse);
    expect(controller.likeCount('5'), 0);
    controller.dispose();
  });

  test('should_expose_latest_server_count_when_two_toggles_succeed', () async {
    final repository = FakeInteractionRepository(
      nextLikeResult: const LikeToggleResult(liked: true, count: 12),
    );
    final controller = InteractionController(repository);

    await controller.toggleDramaLike('5');
    expect(controller.likeCount('5'), 12);

    repository.nextLikeResult = const LikeToggleResult(liked: false, count: 11);
    await controller.toggleDramaLike('5');

    expect(controller.likeCount('5'), 11);
    controller.dispose();
  });

  test('should_rollback_drama_like_when_toggle_fails', () async {
    final repository = FakeInteractionRepository(
      nextLikeResult: const LikeToggleResult(liked: true, count: 3),
    );
    final controller = InteractionController(repository);
    await controller.toggleDramaLike('5');
    repository.likeError = const ApiException(500, '点赞失败');

    final result = await controller.toggleDramaLike('5');

    expect(result.isSuccess, isFalse);
    expect(result.errorMessage, '点赞失败');
    expect(controller.isLiked('5'), isTrue);
    controller.dispose();
  });

  test('should_toggle_episode_like_with_plus_one_and_minus_one', () async {
    final repository = FakeInteractionRepository(
      nextLikeResult: const LikeToggleResult(liked: true, count: 8),
    );
    final controller = InteractionController(repository);

    await controller.toggleEpisodeLike('episode-5');

    expect(repository.likeTargets, ['EPISODE:episode-5']);
    expect(controller.isEpisodeLiked('episode-5'), isTrue);
    expect(controller.episodeLikeCount('episode-5'), 8);
    expect(controller.isLiked('episode-5'), isFalse);

    repository.nextLikeResult = const LikeToggleResult(liked: false, count: 7);
    await controller.toggleEpisodeLike('episode-5');

    expect(controller.isEpisodeLiked('episode-5'), isFalse);
    expect(controller.episodeLikeCount('episode-5'), 7);
    controller.dispose();
  });

  test('should_isolate_episode_like_cache_by_episode_and_drama', () async {
    final repository = FakeInteractionRepository(
      nextLikeResult: const LikeToggleResult(liked: true, count: 8),
    );
    final controller = InteractionController(repository);

    await controller.toggleEpisodeLike('episode-1');
    repository.nextLikeResult = const LikeToggleResult(liked: true, count: 3);
    await controller.toggleEpisodeLike('episode-2');
    repository.nextLikeResult = const LikeToggleResult(liked: false, count: 7);
    await controller.toggleEpisodeLike('episode-1');
    repository.nextLikeResult = const LikeToggleResult(liked: true, count: 12);
    await controller.toggleDramaLike('episode-1');

    expect(controller.isEpisodeLiked('episode-1'), isFalse);
    expect(controller.episodeLikeCount('episode-1'), 7);
    expect(controller.isEpisodeLiked('episode-2'), isTrue);
    expect(controller.episodeLikeCount('episode-2'), 3);
    expect(controller.isLiked('episode-1'), isTrue);
    expect(controller.likeCount('episode-1'), 12);
    expect(repository.likeTargets, [
      'EPISODE:episode-1',
      'EPISODE:episode-2',
      'EPISODE:episode-1',
      'DRAMA:episode-1',
    ]);
    controller.dispose();
  });

  test('should_clear_account_scoped_drama_likes_when_session_changes', () async {
    final repository = FakeInteractionRepository(
      nextLikeResult: const LikeToggleResult(liked: true, count: 1),
    );
    final controller = InteractionController(repository);
    await controller.toggleDramaLike('5');

    controller.clear();

    expect(controller.isLiked('5'), isFalse);
    expect(controller.likeCount('5'), isNull);
    controller.dispose();
  });
}