130 lines
3.7 KiB
Dart
130 lines
3.7 KiB
Dart
// Author: fruit.com.cn
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import 'package:dio/dio.dart';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../../core/data/models/drama.dart';
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import '../../core/data/models/watch_progress.dart';
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import '../../core/data/remote/api_client.dart';
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import '../../core/data/repositories/watch_history_repository.dart';
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import '../../core/data/repositories/playback_repository.dart';
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import '../../core/data/services/favorite_controller.dart';
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import '../../core/data/services/download_controller.dart';
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import '../../core/data/services/wallet_controller.dart';
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import '../player/player_view.dart';
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class DramaDetailLogic extends ChangeNotifier {
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DramaDetailLogic({
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required this.drama,
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required this.history,
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required this.playback,
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required this.favorites,
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});
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/// 先用列表卡片渲染，取到详情后换成带完整剧集的版本。
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Drama drama;
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final WatchHistoryRepository history;
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final PlaybackRepository playback;
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final FavoriteController favorites;
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bool loading = false;
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bool failed = false;
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/// 接口给出的失败原因；为空时界面回退到本地文案。
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String? failureMessage;
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int? continueIndex;
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WatchProgress? progress;
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String? progressError;
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bool _disposed = false;
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void notify() {
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if (!_disposed) notifyListeners();
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}
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/// 列表卡片只带一集可播预览，进详情时补一次完整剧集列表。
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Future<void> load(Future<Drama> Function() fetch) async {
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if (drama.detailLoaded) {
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await loadContinue();
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return;
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}
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loading = true;
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failed = false;
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failureMessage = null;
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notify();
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try {
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drama = await fetch();
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await loadContinue();
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} on ApiException catch (exception) {
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failed = true;
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failureMessage = exception.message;
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} on DioException {
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// 断网/超时：交给 l10n 文案，不把 HTTP 细节丢给用户
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failed = true;
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failureMessage = 'networkError';
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} catch (_) {
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failed = true;
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} finally {
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loading = false;
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notify();
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}
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}
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Future<void> loadContinue() async {
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try {
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final record = await history.progressFor(drama.id);
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if (_disposed) return;
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progress = record;
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progressError = null;
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continueIndex = record == null
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? null
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: _indexOf(record.episodeId) ?? continueIndex;
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notify();
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} catch (exception) {
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if (_disposed) return;
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// 拿不到续看位置不影响看第一集，但要让用户知道（可重试）
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progressError = exception is ApiException
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? exception.message
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: 'progressError';
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notify();
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}
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}
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int? _indexOf(String episodeId) {
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final index = drama.episodes.indexWhere(
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(episode) => episode.id == episodeId,
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);
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return index >= 0 ? index : null;
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}
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/// 该集的续看进度（0~1），用于剧集行上的进度条；没有记录返回 null。
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double? progressFractionFor(String episodeId) {
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final record = progress;
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if (record == null || record.episodeId != episodeId) return null;
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if (!record.hasPosition) return null;
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return record.fraction;
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}
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Future<void> openPlayer(BuildContext context, int index) async {
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await Navigator.of(context).push(
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MaterialPageRoute<void>(
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builder: (_) => PlayerPage(
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drama: drama,
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initialIndex: index,
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wallet: context.read<WalletController>(),
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downloads: context.read<DownloadController>(),
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),
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),
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);
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await loadContinue();
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}
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/// 收藏切换：乐观更新失败时会回滚，由调用方给出提示。
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Future<bool> toggleFavorite() => favorites.toggle(drama.id, card: drama);
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@override
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void dispose() {
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_disposed = true;
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super.dispose();
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}
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}
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