71 lines
1.7 KiB
Dart
71 lines
1.7 KiB
Dart
// Author: fruit.com.cn
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import 'dart:async';
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import 'package:flutter/foundation.dart';
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import '../../core/data/models/watch_progress.dart';
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import '../../core/data/repositories/watch_history_repository.dart';
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/// 首页频道，只依赖目录中已有数据排序或过滤。
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enum HomeChannel { hot, free, newReleases, ranking }
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/// 浏览型首页的本地 UI 状态。
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class HomeBrowseLogic extends ChangeNotifier {
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HomeBrowseLogic({required this.history}) {
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unawaited(refreshRecent());
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}
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static const int recentLimit = 20;
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final WatchHistoryRepository history;
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HomeChannel channel = HomeChannel.hot;
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List<WatchProgress> recent = const [];
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bool loadingRecent = false;
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bool _disposed = false;
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/// 第一条未完成且存在真实播放位置的记录。
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WatchProgress? get primaryRecord {
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for (final record in recent) {
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if (!record.finished && record.hasPosition) return record;
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}
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return null;
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}
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/// 切换频道，不触发额外网络请求。
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void selectChannel(HomeChannel value) {
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if (channel == value) return;
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channel = value;
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_notify();
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}
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/// 重新加载续看数据；未登录时返回空列表。
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Future<void> refreshRecent() async {
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loadingRecent = true;
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_notify();
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try {
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recent = await history.recent(limit: recentLimit);
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} catch (_) {
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recent = const [];
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} finally {
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loadingRecent = false;
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_notify();
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}
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}
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/// 首页重新可见时刷新续看数据。
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void syncPage({required bool active, required bool wasActive}) {
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if (active && !wasActive) unawaited(refreshRecent());
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}
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void _notify() {
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if (!_disposed) notifyListeners();
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}
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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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