import 'package:PiliPlus/common/skeleton/fav_pgc_item.dart';
import 'package:PiliPlus/common/widgets/button/icon_button.dart';
import 'package:PiliPlus/common/widgets/dialog/dialog.dart';
import 'package:PiliPlus/common/widgets/loading_widget/http_error.dart';
import 'package:PiliPlus/common/widgets/refresh_indicator.dart';
import 'package:PiliPlus/http/loading_state.dart';
import 'package:PiliPlus/models_new/fav/fav_pgc/list.dart';
import 'package:PiliPlus/pages/fav/pgc/controller.dart';
import 'package:PiliPlus/pages/fav/pgc/widget/item.dart';
import 'package:PiliPlus/utils/grid.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class FavPgcChildPage extends StatefulWidget {
  const FavPgcChildPage({
    super.key,
    required this.type,
    required this.followStatus,
  });

  final int type;
  final int followStatus;

  @override
  State<FavPgcChildPage> createState() => _FavPgcChildPageState();
}

class _FavPgcChildPageState extends State<FavPgcChildPage>
    with AutomaticKeepAliveClientMixin {
  late final FavPgcController _favPgcController = Get.put(
    FavPgcController(widget.type, widget.followStatus),
    tag: '${widget.type}${widget.followStatus}',
  );

  @override
  Widget build(BuildContext context) {
    super.build(context);
    final theme = Theme.of(context);
    return LayoutBuilder(
      builder: (context, constraints) => Stack(
        clipBehavior: Clip.none,
        children: [
          refreshIndicator(
            onRefresh: _favPgcController.onRefresh,
            child: CustomScrollView(
              controller: _favPgcController.scrollController,
              physics: const AlwaysScrollableScrollPhysics(),
              slivers: [
                SliverPadding(
                  padding: EdgeInsets.only(
                      bottom: MediaQuery.paddingOf(context).bottom + 80),
                  sliver: Obx(
                      () => _buildBody(_favPgcController.loadingState.value)),
                ),
              ],
            ),
          ),
          Positioned(
            top: constraints.maxHeight,
            left: 0,
            right: 0,
            child: Obx(
              () => AnimatedSlide(
                offset: _favPgcController.enableMultiSelect.value
                    ? const Offset(0, -1)
                    : Offset.zero,
                duration: const Duration(milliseconds: 150),
                child: Container(
                  padding: MediaQuery.paddingOf(context),
                  decoration: BoxDecoration(
                    color: theme.colorScheme.onInverseSurface,
                    border: Border(
                      top: BorderSide(
                        width: 0.5,
                        color: theme.colorScheme.outline.withValues(alpha: 0.5),
                      ),
                    ),
                  ),
                  width: double.infinity,
                  child: Row(
                    children: [
                      const SizedBox(width: 16),
                      iconButton(
                        size: 32,
                        tooltip: '取消',
                        context: context,
                        icon: Icons.clear,
                        onPressed: _favPgcController.onDisable,
                      ),
                      const SizedBox(width: 12),
                      Obx(
                        () => Checkbox(
                          value: _favPgcController.allSelected.value,
                          onChanged: (value) {
                            _favPgcController.handleSelect(
                                !_favPgcController.allSelected.value);
                          },
                        ),
                      ),
                      GestureDetector(
                        behavior: HitTestBehavior.opaque,
                        onTap: () => _favPgcController
                            .handleSelect(!_favPgcController.allSelected.value),
                        child: const Padding(
                          padding: EdgeInsets.only(
                            top: 14,
                            bottom: 14,
                            right: 12,
                          ),
                          child: Text('全选'),
                        ),
                      ),
                      const Spacer(),
                      ...const [
                        (followStatus: 1, title: '想看'),
                        (followStatus: 2, title: '在看'),
                        (followStatus: 3, title: '看过'),
                      ]
                          .where((item) =>
                              item.followStatus != widget.followStatus)
                          .map(
                            (item) => Padding(
                              padding: const EdgeInsets.only(left: 25),
                              child: GestureDetector(
                                behavior: HitTestBehavior.opaque,
                                onTap: () {
                                  if (_favPgcController.checkedCount.value !=
                                      0) {
                                    _favPgcController
                                        .onUpdateList(item.followStatus);
                                  }
                                },
                                child: Padding(
                                  padding: const EdgeInsets.symmetric(
                                      vertical: 14, horizontal: 5),
                                  child: Text(
                                    '标记为${item.title}',
                                    style: TextStyle(
                                      color: theme.colorScheme.onSurfaceVariant,
                                    ),
                                  ),
                                ),
                              ),
                            ),
                          ),
                      const SizedBox(width: 20),
                    ],
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildBody(LoadingState<List<FavPgcItemModel>?> loadingState) {
    return switch (loadingState) {
      Loading() => SliverGrid(
          gridDelegate: Grid.videoCardHDelegate(context),
          delegate: SliverChildBuilderDelegate(
            (context, index) {
              return const FavPgcItemSkeleton();
            },
            childCount: 10,
          ),
        ),
      Success(:var response) => response?.isNotEmpty == true
          ? SliverGrid(
              gridDelegate: Grid.videoCardHDelegate(context),
              delegate: SliverChildBuilderDelegate(
                (context, index) {
                  if (index == response.length - 1) {
                    _favPgcController.onLoadMore();
                  }
                  final item = response[index];
                  return FavPgcItem(
                    item: item,
                    ctr: _favPgcController,
                    onSelect: () => _favPgcController.onSelect(item),
                    onUpdateStatus: () => showPgcFollowDialog(
                      context: context,
                      type: widget.type == 0 ? '追番' : '追剧',
                      followStatus: widget.followStatus,
                      onUpdateStatus: (followStatus) {
                        if (followStatus == -1) {
                          _favPgcController.pgcDel(
                            index,
                            item.seasonId,
                          );
                        } else {
                          _favPgcController.onUpdate(
                            index,
                            followStatus,
                            item.seasonId,
                          );
                        }
                      },
                    ),
                  );
                },
                childCount: response!.length,
              ),
            )
          : HttpError(onReload: _favPgcController.onReload),
      Error(:var errMsg) => HttpError(
          errMsg: errMsg,
          onReload: _favPgcController.onReload,
        ),
    };
  }

  @override
  bool get wantKeepAlive => true;
}