opt download (#1755)

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/pages/download/search/controller.dart

@@ -0,0 +1,79 @@
+import 'package:PiliPlus/common/widgets/dialog/dialog.dart';
+import 'package:PiliPlus/http/loading_state.dart';
+import 'package:PiliPlus/models_new/download/bili_download_entry_info.dart';
+import 'package:PiliPlus/pages/common/multi_select/base.dart'
+    show BaseMultiSelectMixin;
+import 'package:PiliPlus/pages/common/search/common_search_controller.dart';
+import 'package:PiliPlus/services/download/download_service.dart';
+import 'package:PiliPlus/utils/storage.dart';
+import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
+import 'package:get/get.dart';
+
+class DownloadSearchController
+    extends
+        CommonSearchController<
+          List<BiliDownloadEntryInfo>,
+          BiliDownloadEntryInfo
+        >
+    with BaseMultiSelectMixin<BiliDownloadEntryInfo> {
+  final _downloadService = Get.find<DownloadService>();
+
+  @override
+  List<BiliDownloadEntryInfo> get list => loadingState.value.data!;
+  @override
+  Rx<LoadingState<List<BiliDownloadEntryInfo>?>> get state => loadingState;
+
+  @override
+  Future<LoadingState<List<BiliDownloadEntryInfo>>> customGetData() async {
+    final text = editController.text.toLowerCase();
+    return Success(
+      _downloadService.downloadList
+          .where(
+            (e) =>
+                e.title.toLowerCase().contains(text) ||
+                e.showTitle.toLowerCase().contains(text),
+          )
+          .toList(),
+    );
+  }
+
+  void onRemoveSingle(int index, BiliDownloadEntryInfo entry) {
+    loadingState
+      ..value.data!.removeAt(index)
+      ..refresh();
+    _downloadService.deleteDownload(
+      entry: entry,
+      removeList: true,
+    );
+    GStorage.watchProgress.delete(entry.cid.toString());
+  }
+
+  @override
+  void onRemove() {
+    showConfirmDialog(
+      context: Get.context!,
+      title: '确定删除选中视频？',
+      onConfirm: () async {
+        SmartDialog.showLoading();
+        final allChecked = this.allChecked.toList();
+        for (var entry in allChecked) {
+          await GStorage.watchProgress.delete(entry.cid.toString());
+          await _downloadService.deleteDownload(
+            entry: entry,
+            removeList: true,
+            refresh: false,
+          );
+        }
+        loadingState
+          ..value.data!.removeWhere(allChecked.contains)
+          ..refresh();
+        _downloadService.flagNotifier.refresh();
+        if (enableMultiSelect.value) {
+          rxCount.value = 0;
+          enableMultiSelect.value = false;
+        }
+        SmartDialog.dismiss();
+      },
+    );
+  }
+}