feat: 重构选集功能，播放器添加选集，修复连播退全屏、无法保存已看完状态

lib/common/widgets/list_sheet.dart

@@ -0,0 +1,169 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
+import 'package:scrollable_positioned_list/scrollable_positioned_list.dart';
+
+import '../../utils/storage.dart';
+import '../../utils/utils.dart';
+
+class ListSheet {
+  final dynamic episodes;
+  final String? bvid;
+  final int? aid;
+  final int currentCid;
+  final Function changeFucCall;
+  final BuildContext context;
+  PersistentBottomSheetController? bottomSheetController;
+  ListSheet({
+    required this.episodes,
+    this.bvid,
+    this.aid,
+    required this.currentCid,
+    required this.changeFucCall,
+    required this.context,
+  });
+
+  Widget buildEpisodeListItem(
+    dynamic episode,
+    int index,
+    bool isCurrentIndex,
+    PersistentBottomSheetController bottomSheetController,
+  ) {
+    Color primary = Theme.of(context).colorScheme.primary;
+    late String title;
+    if (episode.runtimeType.toString() == "EpisodeItem") {
+      if (episode.longTitle != null && episode.longTitle != "") {
+        title = "第${(episode.title ?? '${index + 1}')}话  ${episode.longTitle!}";
+      } else {
+        title = episode.title!;
+      }
+    } else if (episode.runtimeType.toString() == "PageItem") {
+      title = episode.pagePart!;
+    } else if (episode.runtimeType.toString() == "Part") {
+      title = episode.pagePart!;
+      // print("未知类型：${episode.runtimeType}");
+    }
+    return ListTile(
+      onTap: () {
+        if (episode.badge != null && episode.badge == "会员") {
+          dynamic userInfo = GStrorage.userInfo.get('userInfoCache');
+          int vipStatus = 0;
+          if (userInfo != null) {
+            vipStatus = userInfo.vipStatus;
+          }
+          if (vipStatus != 1) {
+            SmartDialog.showToast('需要大会员');
+            return;
+          }
+        }
+        SmartDialog.showToast('切换到：$title');
+        bottomSheetController.close();
+        print(episode.runtimeType.toString());
+        if (episode.runtimeType.toString() == "EpisodeItem") {
+          print(episode.bvid);
+          print(episode.cid);
+          print(episode.aid);
+          changeFucCall(episode.bvid, episode.cid, episode.aid);
+        } else {
+          changeFucCall(bvid!, episode.cid, aid!);
+        }
+      },
+      dense: false,
+      leading: isCurrentIndex
+          ? Image.asset(
+              'assets/images/live.png',
+              color: primary,
+              height: 12,
+              semanticLabel: "正在播放：",
+            )
+          : null,
+      title: Text(
+        title,
+        style: TextStyle(
+          fontSize: 14,
+          color: isCurrentIndex
+              ? primary
+              : Theme.of(context).colorScheme.onSurface,
+        ),
+      ),
+      trailing: episode.badge == null
+          ? null
+          : (episode.badge == '会员'
+              ? Image.asset(
+                  'assets/images/big-vip.png',
+                  height: 20,
+                  semanticLabel: "大会员",
+                )
+              : Text(episode.badge)),
+    );
+  }
+
+  void buildShowBottomSheet() {
+    int currentIndex =
+        episodes!.indexWhere((dynamic e) => e.cid == currentCid) ?? 0;
+    final ItemScrollController itemScrollController = ItemScrollController();
+    bottomSheetController = showBottomSheet(
+      context: context,
+      builder: (BuildContext context) {
+        return StatefulBuilder(
+            builder: (BuildContext context, StateSetter setState) {
+          WidgetsBinding.instance.addPostFrameCallback((_) async {
+            itemScrollController.jumpTo(index: currentIndex);
+          });
+          return Container(
+            height: Utils.getSheetHeight(context),
+            color: Theme.of(context).colorScheme.background,
+            child: Column(
+              children: [
+                Container(
+                  height: 45,
+                  padding: const EdgeInsets.only(left: 14, right: 14),
+                  child: Row(
+                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                    children: [
+                      Text(
+                        '合集（${episodes!.length}）',
+                        style: Theme.of(context).textTheme.titleMedium,
+                      ),
+                      IconButton(
+                        tooltip: '关闭',
+                        icon: const Icon(Icons.close),
+                        onPressed: () => bottomSheetController!.close(),
+                      ),
+                    ],
+                  ),
+                ),
+                Divider(
+                  height: 1,
+                  color: Theme.of(context).dividerColor.withOpacity(0.1),
+                ),
+                Expanded(
+                  child: Material(
+                    child: ScrollablePositionedList.builder(
+                      itemCount: episodes!.length + 1,
+                      itemBuilder: (BuildContext context, int index) {
+                        bool isLastItem = index == episodes!.length;
+                        bool isCurrentIndex = currentIndex == index;
+                        return isLastItem
+                            ? SizedBox(
+                                height:
+                                    MediaQuery.of(context).padding.bottom + 20,
+                              )
+                            : buildEpisodeListItem(
+                                episodes![index],
+                                index,
+                                isCurrentIndex,
+                                bottomSheetController!,
+                              );
+                      },
+                      itemScrollController: itemScrollController,
+                    ),
+                  ),
+                ),
+              ],
+            ),
+          );
+        });
+      },
+    );
+  }
+}