feat(app): 完善播放协议搜索与空状态

lib/core/data/models/play_ticket.dart

@@ -14,6 +14,7 @@ class PlayTicket {
     this.unlockCoin = 0,
     this.previewSeconds = 0,
     this.qualities = const [],
+    this.tracks = const [],
     this.thumbnailsUrl,
     this.likeCount,
     this.commentCount,
@@ -39,8 +40,11 @@ class PlayTicket {
   /// 试看秒数：仅 `COIN_REQUIRED` 时有意义（付费解锁在 B2 做）。
   final int previewSeconds;
 
-  /// 后端下发的清晰度档位（如 AUTO / 720P / 1080P），HLS 由播放器自动切换。
+  /// 后端下发的清晰度档位（如 AUTO / 720p / 1080p）。
   final List<String> qualities;
+
+  /// 各档签名地址。AUTO 是主列表，点选其它档位时换成对应地址。
+  final List<PlayQualityTrack> tracks;
   final String? thumbnailsUrl;
   final int? likeCount;
   final int? commentCount;
@@ -64,6 +68,7 @@ class PlayTicket {
           .whereType<String>()
           .where((quality) => quality.isNotEmpty)
           .toList(),
+      tracks: _tracks(json['tracks'], json['playUrl'] as String? ?? ''),
       thumbnailsUrl: _optionalString(json['thumbnailsUrl']),
       likeCount: json['likeCount'] == null
           ? null
@@ -75,6 +80,67 @@ class PlayTicket {
   }
 }
 
+List<PlayQualityTrack> _tracks(dynamic raw, String playUrl) {
+  final tracks = <PlayQualityTrack>[];
+  if (raw is List) {
+    for (final item in raw) {
+      if (item is! Map) continue;
+      final quality = item['quality'] as String? ?? '';
+      final url = item['playUrl'] as String? ?? '';
+      if (quality.isEmpty || url.isEmpty) continue;
+      tracks.add(PlayQualityTrack(quality: quality, playUrl: url));
+    }
+  }
+  if (tracks.isEmpty && playUrl.isNotEmpty) {
+    tracks.add(PlayQualityTrack(quality: 'AUTO', playUrl: playUrl));
+  }
+  return tracks;
+}
+
+/// 按票据里的分轨地址取播放地址；没有分轨时，从主列表路径推出同目录的单档地址。
+String? qualityPlayUrl({
+  required String quality,
+  required List<PlayQualityTrack> tracks,
+  required String currentUrl,
+}) {
+  final wanted = quality.toUpperCase();
+  for (final track in tracks) {
+    if (track.quality.toUpperCase() == wanted && track.playUrl.isNotEmpty) {
+      return track.playUrl;
+    }
+  }
+  return siblingRenditionUrl(currentUrl, wanted);
+}
+
+/// `.../master.m3u8` 与 `.../720p/index.m3u8` 互相换算，查询参数原样保留。
+String? siblingRenditionUrl(String currentUrl, String quality) {
+  final uri = Uri.tryParse(currentUrl);
+  if (uri == null || uri.path.isEmpty) return null;
+  final path = uri.path;
+  const masterSuffix = '/master.m3u8';
+  String? root;
+  if (path.endsWith(masterSuffix)) {
+    root = path.substring(0, path.length - masterSuffix.length);
+  } else {
+    final match = RegExp(r'/(\d+p)/index\.m3u8$').firstMatch(path);
+    if (match == null) return null;
+    root = path.substring(0, match.start);
+  }
+  final next = quality.toUpperCase() == 'AUTO'
+      ? '$root$masterSuffix'
+      : '$root/${quality.toLowerCase()}/index.m3u8';
+  if (next == path) return currentUrl;
+  return uri.replace(path: next).toString();
+}
+
+/// 一档清晰度的签名播放地址。
+class PlayQualityTrack {
+  const PlayQualityTrack({required this.quality, required this.playUrl});
+
+  final String quality;
+  final String playUrl;
+}
+
 String? _optionalString(dynamic value) {
   final text = value is String ? value.trim() : '';
   return text.isEmpty ? null : text;

lib/core/data/models/watch_progress.dart

@@ -18,6 +18,7 @@ class WatchProgress {
     this.totalEpisodes,
     this.finished = false,
     this.playCount = 0,
+    this.viewCount,
     this.updatedAt,
   });
 
@@ -31,6 +32,9 @@ class WatchProgress {
   final Duration duration;
   final bool finished;
   final int playCount;
+
+  /// 短剧热度。历史列表没下发时为空，不能拿用户自己的 playCount 冒充。
+  final int? viewCount;
   final DateTime? updatedAt;
 
   bool get hasPosition => position > Duration.zero;
@@ -57,6 +61,9 @@ class WatchProgress {
       duration: Duration(milliseconds: jsonToInt(json['durationMs'])),
       finished: json['finished'] == true,
       playCount: jsonToInt(json['playCount']),
+      viewCount: json['viewCount'] == null
+          ? null
+          : jsonToInt(json['viewCount']),
       updatedAt: DateTime.tryParse(json['updatedAt'] as String? ?? ''),
     );
   }
@@ -72,6 +79,7 @@ class WatchProgress {
     'durationMs': duration.inMilliseconds,
     'finished': finished,
     'playCount': playCount,
+    if (viewCount != null) 'viewCount': viewCount,
     if (updatedAt != null) 'updatedAt': updatedAt!.toIso8601String(),
   };
 }

lib/core/data/remote/api_client.dart

@@ -148,7 +148,8 @@ class ApiClient {
             skipAuthRetry: skipAuthRetry,
           );
         }
-        onUnauthorized?.call();
+        final token = accessTokenReader?.call();
+        if (token == null || token.isEmpty) onUnauthorized?.call();
         throw ApiException(401, cause.message ?? '登录已过期');
       }
       if (cause is ApiException) {

lib/core/data/remote/auth_api.dart

@@ -33,6 +33,7 @@ class AuthApi {
     required String code,
     required String deviceId,
     String platform = '',
+    String osVersion = '',
     String appVersion = '',
   }) async {
     final data = await _client.post(
@@ -43,6 +44,7 @@ class AuthApi {
         'code': code,
         'deviceId': deviceId,
         'platform': platform,
+        'osVersion': osVersion,
         'appVersion': appVersion,
       },
     );
@@ -55,6 +57,7 @@ class AuthApi {
     required String code,
     required String deviceId,
     String platform = '',
+    String osVersion = '',
     String appVersion = '',
   }) async {
     final data = await _client.post(
@@ -65,6 +68,7 @@ class AuthApi {
         'code': code,
         'deviceId': deviceId,
         'platform': platform,
+        'osVersion': osVersion,
         'appVersion': appVersion,
       },
     );
@@ -76,6 +80,7 @@ class AuthApi {
     required String password,
     required String deviceId,
     String platform = '',
+    String osVersion = '',
     String appVersion = '',
   }) async {
     final data = await _client.post(
@@ -87,6 +92,7 @@ class AuthApi {
         'countryCode': 'ID',
         'deviceId': deviceId,
         'platform': platform,
+        'osVersion': osVersion,
         'appVersion': appVersion,
       },
     );
@@ -98,6 +104,7 @@ class AuthApi {
     required String password,
     required String deviceId,
     String platform = '',
+    String osVersion = '',
     String appVersion = '',
   }) async {
     final data = await _client.post(
@@ -108,18 +115,25 @@ class AuthApi {
         'password': password,
         'deviceId': deviceId,
         'platform': platform,
+        'osVersion': osVersion,
         'appVersion': appVersion,
       },
     );
     return AuthSession.fromJson((data as Map).cast<String, dynamic>());
   }
 
-  Future<AuthSession> refresh(String refreshToken) async {
+  Future<AuthSession> refresh(
+    String refreshToken, {
+    String platform = '',
+    String osVersion = '',
+  }) async {
     final data = await _client.post(
       '/app/auth/refresh',
-      body: {'refreshToken': refreshToken},
-      // 刷新请求本身不带旧令牌重试，失败就是失败
-      skipAuthRetry: true,
+      body: {
+        'refreshToken': refreshToken,
+        'platform': platform,
+        'osVersion': osVersion,
+      },
     );
     return AuthSession.fromJson((data as Map).cast<String, dynamic>());
   }

lib/core/data/remote/library_api.dart

@@ -36,4 +36,9 @@ class LibraryApi {
   Future<void> removeFavorite(String dramaId) async {
     await _client.delete('/app/favorites/$dramaId');
   }
+
+  /// 一次取消多部短剧，请求体为 dramaIds 数组。
+  Future<void> removeFavorites(List<String> dramaIds) async {
+    await _client.post('/app/favorites/remove', body: {'dramaIds': dramaIds});
+  }
 }

lib/core/data/repositories/favorite_repository.dart

@@ -13,6 +13,9 @@ abstract interface class FavoriteRepository {
   Future<PageResult<Drama>> page({int pageIndex = 1, int pageSize = 20});
 
   Future<void> remove(String dramaId);
+
+  /// 一次取消多部短剧。
+  Future<void> removeMany(List<String> dramaIds);
 }
 
 class HttpFavoriteRepository implements FavoriteRepository {
@@ -36,6 +39,10 @@ class HttpFavoriteRepository implements FavoriteRepository {
 
   @override
   Future<void> remove(String dramaId) => _api.removeFavorite(dramaId);
+
+  @override
+  Future<void> removeMany(List<String> dramaIds) =>
+      _api.removeFavorites(dramaIds);
 }
 
 /// 内存实现：单测与 widget 测试注入用。
@@ -51,6 +58,7 @@ class InMemoryFavoriteRepository implements FavoriteRepository {
   bool failRemove = false;
   int toggleCalls = 0;
   int pageCalls = 0;
+  int removeManyCalls = 0;
 
   @override
   Future<bool> toggle(String dramaId) async {
@@ -80,4 +88,11 @@ class InMemoryFavoriteRepository implements FavoriteRepository {
     if (failRemove) throw StateError('favorite unavailable');
     _saved.remove(dramaId);
   }
+
+  @override
+  Future<void> removeMany(List<String> dramaIds) async {
+    removeManyCalls += 1;
+    if (failRemove) throw StateError('favorite unavailable');
+    _saved.removeAll(dramaIds);
+  }
 }

lib/core/data/services/auth_controller.dart

@@ -1,3 +1,5 @@
+import 'dart:io' show Platform;
+
 import 'package:flutter/foundation.dart';
 
 import '../models/auth_session.dart';
@@ -9,7 +11,7 @@ import 'auth_session_store.dart';
 ///
 /// 职责：本地会话的读写（[AuthSessionStore]）、注册/登录/登出、令牌刷新；
 /// 也是 [ApiClient] 的 `accessTokenReader` / `tokenRefresher` / `onUnauthorized` 实现方 ——
-/// 401 → 刷新 → 重试失败就清会话，UI 通过 [isSignedIn] 自动回到未登录态。
+/// 401 → 刷新 → 重试。令牌被拒绝才清会话，服务中断时保持登录。
 class AuthController extends ChangeNotifier {
   AuthController(this._api, this._store);
 
@@ -19,6 +21,10 @@ class AuthController extends ChangeNotifier {
   AuthSession? _session;
   String _deviceId = '';
   bool _loaded = false;
+  Future<bool>? _refreshing;
+
+  /// 登录已过期、账号停用才清本地会话。服务不可达不能当成退出登录。
+  static const Set<int> _rejectedSessionCodes = {401, 100001};
 
   bool get isLoaded => _loaded;
   bool get isSignedIn => _session != null;
@@ -43,6 +49,7 @@ class AuthController extends ChangeNotifier {
       password: password,
       deviceId: await _store.deviceId(),
       platform: _platform,
+      osVersion: _osVersion,
     );
     await _apply(session);
   }
@@ -53,14 +60,12 @@ class AuthController extends ChangeNotifier {
       password: password,
       deviceId: await _store.deviceId(),
       platform: _platform,
+      osVersion: _osVersion,
     );
     await _apply(session);
   }
 
-  Future<void> sendOtp({
-    required String target,
-    String scene = 'LOGIN',
-  }) async {
+  Future<void> sendOtp({required String target, String scene = 'LOGIN'}) async {
     await _api.sendOtp(
       target: target,
       scene: scene,
@@ -77,6 +82,7 @@ class AuthController extends ChangeNotifier {
       code: code,
       deviceId: await _store.deviceId(),
       platform: _platform,
+      osVersion: _osVersion,
     );
     await _apply(session);
   }
@@ -90,10 +96,17 @@ class AuthController extends ChangeNotifier {
       code: code,
       deviceId: await _store.deviceId(),
       platform: _platform,
+      osVersion: _osVersion,
     );
     await _apply(session);
   }
 
+  Future<void> clear() async {
+    _session = null;
+    await _store.clear();
+    notifyListeners();
+  }
+
   Future<void> signOut() async {
     final refreshToken = _session?.refreshToken ?? '';
     _session = null;
@@ -107,29 +120,43 @@ class AuthController extends ChangeNotifier {
     }
   }
 
-  /// 供 [ApiClient] 调用：刷新令牌并落盘。失败时清本地会话。
-  Future<bool> refresh() async {
+  /// 供 [ApiClient] 调用：刷新令牌并落盘。
+  ///
+  /// 同一时刻只刷新一次，避免重启期间并发 401 把新令牌轮换掉。
+  /// 网络失败或 5xx 保留本地会话；只有令牌被拒绝才退出登录。
+  Future<bool> refresh() {
+    final current = _refreshing;
+    if (current != null) return current;
+    final run = _refreshSingle();
+    _refreshing = run;
+    return run.whenComplete(() {
+      if (identical(_refreshing, run)) _refreshing = null;
+    });
+  }
+
+  Future<bool> _refreshSingle() async {
     final refreshToken = _session?.refreshToken ?? '';
     if (refreshToken.isEmpty) {
       await clear();
       return false;
     }
     try {
-      await _apply(await _api.refresh(refreshToken));
+      await _apply(
+        await _api.refresh(
+          refreshToken,
+          platform: _platform,
+          osVersion: _osVersion,
+        ),
+      );
       return true;
+    } on ApiException catch (error) {
+      if (_rejectedSessionCodes.contains(error.code)) await clear();
+      return false;
     } catch (_) {
-      await clear();
       return false;
     }
   }
 
-  Future<void> clear() async {
-    if (_session == null) return;
-    _session = null;
-    await _store.clear();
-    notifyListeners();
-  }
-
   /// 资料保存成功后同步登录态摘要，保留当前令牌。
   Future<void> applyProfile(AuthUser user) async {
     final current = _session;
@@ -154,4 +181,9 @@ class AuthController extends ChangeNotifier {
     if (kIsWeb) return 'WEB';
     return defaultTargetPlatform == TargetPlatform.iOS ? 'IOS' : 'ANDROID';
   }
+
+  String get _osVersion {
+    if (kIsWeb) return '';
+    return Platform.operatingSystemVersion;
+  }
 }

lib/core/data/services/favorite_controller.dart

@@ -161,6 +161,37 @@ class FavoriteController extends ChangeNotifier {
     }
   }
 
+  /// 一次取消多部收藏。失败时整批回滚。
+  Future<bool> removeMany(List<String> dramaIds) async {
+    final ids = dramaIds.toSet();
+    if (ids.isEmpty) return true;
+    final previousCards = cards;
+    final previousTotal = total;
+    final previousHasMore = hasMore;
+    final removed = cards.where((drama) => ids.contains(drama.id)).toList();
+    if (removed.isEmpty) return true;
+    cards = cards.where((drama) => !ids.contains(drama.id)).toList();
+    for (final id in ids) {
+      _saved.remove(id);
+    }
+    total = total > removed.length ? total - removed.length : 0;
+    hasMore = cards.length < total;
+    notify();
+    try {
+      await _repository.removeMany(dramaIds);
+      return true;
+    } catch (_) {
+      cards = previousCards;
+      total = previousTotal;
+      hasMore = previousHasMore;
+      for (final drama in removed) {
+        _saved.add(drama.id);
+      }
+      notify();
+      return false;
+    }
+  }
+
   /// 取消收藏（"我的"页列表里删除某条）。
   Future<bool> remove(String dramaId) async {
     final index = cards.indexWhere((drama) => drama.id == dramaId);

lib/core/data/services/playback_session.dart

@@ -5,6 +5,10 @@ import 'dart:async';
 import 'package:flutter/foundation.dart';
 import '../models/drama.dart';
 import '../models/player_port.dart';
+import 'video_player_port.dart';
+
+/// 新纹理第一帧常是黑的，旧画面只盖住这一小段。
+const Duration _qualityHandoffHold = Duration(milliseconds: 200);
 
 typedef PlayerFactory = PlayerPort Function(Episode episode);
 typedef PlayerPreparation =
@@ -66,6 +70,7 @@ class PlaybackSession extends ChangeNotifier {
   final Set<_PlayerSlot> _live = {};
   _PlayerSlot? _active;
   _PlayerSlot? _next;
+  _PlayerSlot? _handoff;
   Future<void> _operations = Future<void>.value();
   Future<void> _preloadTask = Future<void>.value();
   int _generation = 0;
@@ -127,6 +132,15 @@ class PlaybackSession extends ChangeNotifier {
     return null;
   }
 
+  /// 清晰度切换时盖住黑帧的旧播放器。只在仍由会话持有时交给界面。
+  PlayerPort? handoffAt(int index) {
+    final slot = _handoff;
+    if (_closed || slot == null || slot.retiring || slot.index != index) {
+      return null;
+    }
+    return slot.player;
+  }
+
   /// 队列重排后把当前仍在播放的 slot 映射到新索引，不重新创建播放器。
   void remapCurrentIndex(int index, {int? preloadIndex}) {
     if (_closed || index < 0 || index >= episodes.length) return;
@@ -184,9 +198,10 @@ class PlaybackSession extends ChangeNotifier {
   Future<void> _retire(_PlayerSlot? slot) async {
     if (slot == null || !_live.contains(slot)) return;
     slot.retiring = true;
-    final cleared = _active == slot || _next == slot;
+    final cleared = _active == slot || _next == slot || _handoff == slot;
     if (_active == slot) _active = null;
     if (_next == slot) _next = null;
+    if (_handoff == slot) _handoff = null;
     if (cleared) _notify();
     await waitForFrame?.call();
     await slot.ready;
@@ -235,6 +250,7 @@ class PlaybackSession extends ChangeNotifier {
     _PlayerSlot? target;
     await _enqueue(() async {
       if (_closed || request != _generation) return;
+      await _retire(_handoff);
       final old = _active;
       if (old != null &&
           old.index == index &&
@@ -272,6 +288,108 @@ class PlaybackSession extends ChangeNotifier {
     if (!_closed && request == _generation) _schedulePreload();
   }
 
+  /// 后台准备新片源，成功后再替换当前播放器。失败时原播放器保持不动。
+  Future<bool> replaceCurrent() async {
+    if (_closed || !_selected) return false;
+    final index = _currentIndex;
+    if (index < 0 || index >= episodes.length || isLocked) return false;
+    if (!canPlay(episodes[index])) return false;
+    final request = _generation;
+    final slot = await _prepareReplacement(index, request);
+    if (slot == null) {
+      await _resumeActive();
+      return false;
+    }
+    await slot.ready;
+    if (!_replacementReady(slot, request)) {
+      await _dropReplacement(slot);
+      await _resumeActive();
+      return false;
+    }
+    final previous = await _showReplacement(slot, request);
+    if (_active != slot) {
+      await _dropReplacement(slot);
+      return false;
+    }
+    await _enqueue(() => _start(slot, request));
+    await Future<void>.delayed(_qualityHandoffHold);
+    if (previous != null && _handoff == previous && _active == slot) {
+      await _enqueue(() => _retire(previous));
+    }
+    if (!_closed && request == _generation) _schedulePreload();
+    return _active == slot && slot.failure == null;
+  }
+
+  Future<_PlayerSlot?> _prepareReplacement(int index, int request) async {
+    _PlayerSlot? created;
+    await _enqueue(() async {
+      if (_closed || request != _generation || _active == null) return;
+      final warm = _next;
+      _next = null;
+      await _retire(_handoff);
+      await _retire(warm);
+      if (_closed || request != _generation || _active == null) return;
+      try {
+        created = _create(index);
+      } catch (_) {
+        created = null;
+      }
+    });
+    return created;
+  }
+
+  bool _replacementReady(_PlayerSlot slot, int request) {
+    return !_closed &&
+        request == _generation &&
+        _active != null &&
+        slot.failure == null &&
+        slot.prepared;
+  }
+
+  Future<void> _resumeActive() async {
+    final slot = _active;
+    if (slot == null || !_userWantsPlay || _closed) return;
+    await _enqueue(() => _applyPlayback(slot));
+  }
+
+  Future<void> _dropReplacement(_PlayerSlot slot) {
+    return _enqueue(() async {
+      if (_live.contains(slot)) await _retire(slot);
+    });
+  }
+
+  /// 先把已出画的新播放器交到界面上，旧播放器留给调用方稍后释放。
+  Future<_PlayerSlot?> _showReplacement(_PlayerSlot slot, int request) async {
+    _PlayerSlot? previous;
+    var shown = false;
+    await _enqueue(() async {
+      if (!_replacementReady(slot, request)) return;
+      previous = _active;
+      await _catchUp(slot, previous);
+      _handoff = previous;
+      _active = slot;
+      shown = true;
+      if (previous != null) await previous!.player.pause();
+      _notify();
+    });
+    if (!shown || _active != slot) return null;
+    return previous;
+  }
+
+  /// 旧片仍在播，把新片对齐到当前进度，盖住时画面才接得上。
+  Future<void> _catchUp(_PlayerSlot slot, _PlayerSlot? previous) async {
+    final next = slot.player;
+    final current = previous?.player;
+    if (next is! VideoPlayerPort || current is! VideoPlayerPort) return;
+    final position = current.controller.value.position;
+    if (position <= Duration.zero) return;
+    try {
+      await next.seekTo(position);
+    } catch (_) {
+      // 对齐失败仍用准备阶段的进度，不因此放弃切换。
+    }
+  }
+
   Future<void> _start(_PlayerSlot slot, int request) async {
     bool valid() => !_closed && request == _generation && _active == slot;
     if (!valid()) return;
@@ -387,7 +505,7 @@ class PlaybackSession extends ChangeNotifier {
   Future<void> _releasePlayers() {
     _generation++;
     return _enqueue(() async {
-      _active = _next = null;
+      _active = _next = _handoff = null;
       _loading = false;
       _notify();
       for (final slot in _live.toList()) {