import 'package:PiliPlus/common/constants.dart';
import 'package:PiliPlus/common/skeleton/video_card_v.dart';
import 'package:PiliPlus/common/widgets/button/icon_button.dart';
import 'package:PiliPlus/common/widgets/image/network_img_layer.dart';
import 'package:PiliPlus/common/widgets/loading_widget/http_error.dart';
import 'package:PiliPlus/common/widgets/pair.dart';
import 'package:PiliPlus/common/widgets/refresh_indicator.dart';
import 'package:PiliPlus/common/widgets/self_sized_horizontal_list.dart';
import 'package:PiliPlus/http/loading_state.dart';
import 'package:PiliPlus/models/live/live_feed_index/card_data_list_item.dart';
import 'package:PiliPlus/models/live/live_feed_index/card_list.dart';
import 'package:PiliPlus/pages/common/common_page.dart';
import 'package:PiliPlus/pages/live/controller.dart';
import 'package:PiliPlus/pages/live/widgets/live_item_app.dart';
import 'package:PiliPlus/pages/live_area/view.dart';
import 'package:PiliPlus/pages/live_follow/view.dart';
import 'package:PiliPlus/pages/search/widgets/search_text.dart';
import 'package:PiliPlus/utils/grid.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class LivePage extends CommonPage {
  const LivePage({super.key});

  @override
  State<LivePage> createState() => _LivePageState();
}

class _LivePageState extends CommonPageState<LivePage, LiveController>
    with AutomaticKeepAliveClientMixin {
  @override
  LiveController controller = Get.put(LiveController());

  @override
  bool get wantKeepAlive => true;

  @override
  Widget build(BuildContext context) {
    super.build(context);
    final ThemeData theme = Theme.of(context);
    return Container(
      clipBehavior: Clip.hardEdge,
      margin: const EdgeInsets.only(
          left: StyleString.safeSpace, right: StyleString.safeSpace),
      decoration: const BoxDecoration(
        borderRadius: StyleString.mdRadius,
      ),
      child: refreshIndicator(
        onRefresh: controller.onRefresh,
        child: CustomScrollView(
          controller: controller.scrollController,
          physics: const AlwaysScrollableScrollPhysics(),
          slivers: [
            SliverPadding(
              padding: EdgeInsets.only(
                top: StyleString.cardSpace,
                bottom: MediaQuery.paddingOf(context).bottom + 80,
              ),
              sliver: SliverMainAxisGroup(slivers: [
                Obx(() => _buildTop(theme, controller.topState.value)),
                Obx(() => _buildBody(theme, controller.loadingState.value)),
              ]),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildTop(ThemeData theme, Pair<LiveCardList?, LiveCardList?> data) {
    return SliverMainAxisGroup(
      slivers: [
        if (data.first != null)
          SliverToBoxAdapter(child: _buildFollowList(theme, data.first!)),
        if (data.second?.cardData?.areaEntranceV3?.list?.isNotEmpty == true)
          SliverToBoxAdapter(
            child: Row(
              children: [
                Expanded(
                  child: SelfSizedHorizontalList(
                    gapSize: 12,
                    padding:
                        const EdgeInsets.only(top: 10, bottom: 10, right: 12),
                    childBuilder: (index) {
                      late final item = data
                          .second!.cardData!.areaEntranceV3!.list![index - 1];
                      return Obx(
                        () => SearchText(
                          fontSize: 14,
                          padding: const EdgeInsets.symmetric(
                            horizontal: 8,
                            vertical: 3,
                          ),
                          text: index == 0 ? '推荐' : '${item.title}',
                          bgColor: index == controller.areaIndex.value
                              ? theme.colorScheme.secondaryContainer
                              : Colors.transparent,
                          textColor: index == controller.areaIndex.value
                              ? theme.colorScheme.onSecondaryContainer
                              : null,
                          onTap: (value) {
                            controller.onSelectArea(
                              index,
                              index == 0 ? null : item,
                            );
                          },
                        ),
                      );
                    },
                    itemCount:
                        data.second!.cardData!.areaEntranceV3!.list!.length + 1,
                  ),
                ),
                iconButton(
                  size: 26,
                  iconSize: 16,
                  context: context,
                  tooltip: '全部标签',
                  icon: Icons.widgets,
                  onPressed: () {
                    Get.to(const LiveAreaPage());
                  },
                ),
              ],
            ),
          )
        else
          const SliverToBoxAdapter(child: SizedBox(height: 10)),
      ],
    );
  }

  Widget _buildBody(ThemeData theme, LoadingState<List?> loadingState) {
    return switch (loadingState) {
      Loading() => SliverGrid(
          gridDelegate: SliverGridDelegateWithExtentAndRatio(
            mainAxisSpacing: StyleString.cardSpace,
            crossAxisSpacing: StyleString.cardSpace,
            maxCrossAxisExtent: Grid.smallCardWidth,
            childAspectRatio: StyleString.aspectRatio,
            mainAxisExtent: MediaQuery.textScalerOf(context).scale(90),
          ),
          delegate: SliverChildBuilderDelegate(
            (context, index) {
              return const VideoCardVSkeleton();
            },
            childCount: 10,
          ),
        ),
      Success() => SliverMainAxisGroup(
          slivers: [
            if (controller.newTags?.isNotEmpty == true)
              SliverToBoxAdapter(
                child: SelfSizedHorizontalList(
                  gapSize: 12,
                  padding: const EdgeInsets.only(bottom: 8),
                  childBuilder: (index) {
                    late final item = controller.newTags![index];
                    return Obx(
                      () => SearchText(
                        fontSize: 13,
                        padding: const EdgeInsets.symmetric(
                          horizontal: 8,
                          vertical: 3,
                        ),
                        text: '${item.name}',
                        bgColor: index == controller.tagIndex.value
                            ? theme.colorScheme.secondaryContainer
                            : Colors.transparent,
                        textColor: index == controller.tagIndex.value
                            ? theme.colorScheme.onSecondaryContainer
                            : null,
                        onTap: (value) {
                          controller.onSelectTag(
                            index,
                            item.sortType,
                          );
                        },
                      ),
                    );
                  },
                  itemCount: controller.newTags!.length,
                ),
              ),
            loadingState.response?.isNotEmpty == true
                ? SliverGrid(
                    gridDelegate: SliverGridDelegateWithExtentAndRatio(
                      mainAxisSpacing: StyleString.cardSpace,
                      crossAxisSpacing: StyleString.cardSpace,
                      maxCrossAxisExtent: Grid.smallCardWidth,
                      childAspectRatio: StyleString.aspectRatio,
                      mainAxisExtent:
                          MediaQuery.textScalerOf(context).scale(90),
                    ),
                    delegate: SliverChildBuilderDelegate(
                      (context, index) {
                        if (index == loadingState.response!.length - 1) {
                          controller.onLoadMore();
                        }
                        final item = loadingState.response![index];
                        if (item is LiveCardList) {
                          return LiveCardVApp(
                            item: item.cardData!.smallCardV1!,
                          );
                        }
                        return LiveCardVApp(item: item);
                      },
                      childCount: loadingState.response!.length,
                    ),
                  )
                : HttpError(onReload: controller.onReload),
          ],
        ),
      Error() => HttpError(
          errMsg: loadingState.errMsg,
          onReload: controller.onReload,
        ),
    };
  }

  Widget _buildFollowList(ThemeData theme, LiveCardList item) {
    return Column(
      mainAxisSize: MainAxisSize.min,
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Row(
          children: [
            Text.rich(
              TextSpan(
                children: [
                  const TextSpan(text: '我的关注  '),
                  TextSpan(
                    text:
                        '${item.cardData?.myIdolV1?.extraInfo?.totalCount ?? 0}',
                    style: TextStyle(
                      fontSize: 13,
                      color: theme.colorScheme.primary,
                    ),
                  ),
                  TextSpan(
                    text: '人正在直播',
                    style: TextStyle(
                      fontSize: 13,
                      color: theme.colorScheme.outline,
                    ),
                  ),
                ],
              ),
            ),
            const Spacer(),
            GestureDetector(
              onTap: () {
                Get.to(const LiveFollowPage());
              },
              child: Row(
                mainAxisSize: MainAxisSize.min,
                children: [
                  Text(
                    '查看更多',
                    style: TextStyle(
                      color: theme.colorScheme.outline,
                    ),
                  ),
                  Icon(
                    size: 20,
                    Icons.keyboard_arrow_right_outlined,
                    color: theme.colorScheme.outline,
                  ),
                ],
              ),
            ),
          ],
        ),
        if (item.cardData?.myIdolV1?.list?.isNotEmpty == true)
          _buildFollowBody(theme, item.cardData!.myIdolV1!.list!),
      ],
    );
  }

  Widget _buildFollowBody(ThemeData theme, List<CardLiveItem> followList) {
    return MediaQuery.removePadding(
      context: context,
      removeLeft: context.orientation == Orientation.landscape,
      child: SelfSizedHorizontalList(
        gapSize: 5,
        childBuilder: (index) {
          final item = followList[index];
          return SizedBox(
            width: 65,
            child: GestureDetector(
              onTap: () {
                Get.toNamed('/liveRoom?roomid=${item.roomid}');
              },
              onLongPress: () {
                Feedback.forLongPress(context);
                Get.toNamed('/member?mid=${item.uid}');
              },
              child: Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  const SizedBox(height: 8),
                  Container(
                    margin: const EdgeInsets.all(2),
                    padding: const EdgeInsets.all(2),
                    decoration: BoxDecoration(
                      border: Border.all(
                        width: 1.5,
                        color: theme.colorScheme.primary,
                        strokeAlign: BorderSide.strokeAlignOutside,
                      ),
                      shape: BoxShape.circle,
                    ),
                    child: NetworkImgLayer(
                      type: 'avatar',
                      width: 45,
                      height: 45,
                      src: item.face,
                    ),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    item.uname!,
                    maxLines: 1,
                    overflow: TextOverflow.ellipsis,
                    style: const TextStyle(fontSize: 12),
                    textAlign: TextAlign.center,
                  ),
                ],
              ),
            ),
          );
        },
        itemCount: followList.length,
      ),
    );
  }
}