import 'package:cpt_main/modules/home/home_state.dart';
import 'package:cs_resources/generated/assets.dart';
import 'package:cs_resources/generated/l10n.dart';
import 'package:cs_resources/theme/app_colors_theme.dart';
import 'package:domain/entity/home_list_entity.dart';
import 'package:flutter/material.dart';
import 'package:flutter/src/widgets/framework.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:auto_route/auto_route.dart';
import 'package:plugin_basic/provider/user_config/user_config_service.dart';
import 'package:plugin_platform/engine/toast/toast_engine.dart';
import 'package:router/componentRouter/community_service.dart';
import 'package:router/componentRouter/component_service_manager.dart';
import 'package:widgets/ext/ex_widget.dart';
import 'package:widgets/my_appbar.dart';
import 'package:widgets/my_load_image.dart';
import 'package:widgets/my_text_view.dart';
import 'package:widgets/widget_export.dart';

import 'item_home_category.dart';
import 'home_view_model.dart';
import 'item_home_last_news.dart';
import 'item_home_last_trans.dart';
import 'item_home_manage_guide.dart';
import 'item_home_property_news.dart';
import 'latest_news/info/latest_news_info_screen.dart';
import 'latest_news/internal/latest_news_internal_screen.dart';
import 'latest_news/property/latest_news_property_screen.dart';
import 'latest_news/publish/latest_news_publish_screen.dart';

@RoutePage()
class HomePage extends HookConsumerWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final viewModel = ref.read(homeViewModelProvider.notifier);
    final state = ref.watch(homeViewModelProvider);
    final bannerIndex = useState(0);

    useEffect(() {
      // 组件挂载时执行 - 执行接口请求
      Future.microtask(() => viewModel.fetchHomeIndex());
      return () {
        // 组件卸载时执行
      };
    }, []);

    return Scaffold(
      //根据当前时间生成欢迎文本
      appBar: MyAppBar.appBar(context, _formatNowGreetingText(ref),
          showBackButton: false,
          backgroundColor: context.appColors.backgroundWhite,
          actions: [
            Center(
                    child: Stack(
              clipBehavior: Clip.none, // 不裁剪超出边界的内容
              alignment: Alignment.topLeft,
              children: <Widget>[
                // 通知图标
                const MyAssetImage(Assets.mainHomeNotificationIcon, width: 19, height: 20),

                //未读消息
                Positioned(
                  left: 0,
                  top: 0,
                  child: Transform.translate(
                    offset: const Offset(-10, -5),
                    child: MyTextView(
                      "99",
                      boxWidth: 20.0,
                      textColor: Colors.white,
                      fontSize: 10,
                      isFontLight: true,
                      backgroundColor: context.appColors.redDefault,
                      cornerRadius: 8,
                      paddingTop: 2,
                      paddingBottom: 2,
                      textAlign: TextAlign.center,
                    ),
                  ),
                ),
              ],
            ).onTap(viewModel.gotoNotificationPage))
                .marginOnly(right: 15),
          ],
          showBottomDivider: true),
      backgroundColor: context.appColors.backgroundDefault,
      body: EasyRefresh(
        controller: viewModel.refreshController,
        onRefresh: viewModel.onRefresh,
        child: CustomScrollView(
          scrollDirection: Axis.vertical,
          slivers: [
            //支付与奖励
            _buildPaymentAndRewardsWidget(context, ref),

            //间距
            _buildSliverSpace(20),

            //九宫选项组 （固定）
            _buildCategoryWidget(context, ref),

            //轮播图片 （动态）
            _buildBannerImage(ref, bannerIndex),

            //最新的新闻（动态）
            _buildLastNews(context, ref),

            //最新的交易
            SliverToBoxAdapter(
              child: MyTextView(
                marginTop: 14,
                marginLeft: 15,
                marginBottom: 14,
                S.current.latest_transactions,
                textColor: context.appColors.textPrimary,
                fontSize: 16,
                isFontMedium: true,
              ),
            ),

            //最新交易列表 （动态）
            _buildLastTransaction(context, state),

            //房产新闻
            SliverToBoxAdapter(
              child: MyTextView(
                marginTop: 14,
                marginLeft: 15,
                marginBottom: 14,
                onClick: viewModel.gotoPropertyNewsPage,
                S.current.property_news,
                textColor: context.appColors.textPrimary,
                fontSize: 16,
                isFontMedium: true,
              ),
            ),

            //房产新闻列表 （动态）
            _buildPropertyNews(context, ref),

            //管理员介绍 (固定)
            _buildManagementGuides(context, ref),

            //间距
            _buildSliverSpace(15),
          ],
        ),
      ),
    );
  }

  //顶部的支付与奖励的布局
  Widget _buildPaymentAndRewardsWidget(BuildContext context, WidgetRef ref) {
    final viewModel = ref.read(homeViewModelProvider.notifier);

    return SliverToBoxAdapter(
      child: Container(
        color: context.appColors.whiteBG,
        width: double.infinity,
        height: 45,
        child: Column(
          children: [
            Row(
              children: [
                Row(
                  mainAxisSize: MainAxisSize.max,
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    const MyAssetImage(Assets.mainHomePaymentIcon, width: 16.5, height: 18).marginOnly(left: 20),
                    MyTextView(
                      S.current.payment,
                      textColor: context.appColors.textBlack,
                      fontSize: 15,
                      isFontMedium: true,
                    ).paddingOnly(left: 13, right: 13).expanded(),
                    const MyAssetImage(Assets.mainHomeMoreIcon, width: 6, height: 8.5).marginOnly(right: 15),
                  ],
                ).onTap(viewModel.gotoPaymentPage).expanded(),
                Container(color: context.appColors.dividerDefault, width: 0.5, height: double.infinity),
                Row(
                  mainAxisSize: MainAxisSize.max,
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    const MyAssetImage(Assets.mainHomeRewardsIcon, width: 16.5, height: 17).marginOnly(left: 20),
                    MyTextView(
                      S.current.rewards,
                      textColor: context.appColors.textBlack,
                      fontSize: 15,
                      isFontMedium: true,
                    ).paddingOnly(left: 13, right: 4).expanded(),
                    MyTextView(
                      "9568",
                      textColor: context.appColors.textBlack,
                      fontSize: 15,
                      isFontBold: true,
                    ).paddingOnly(left: 1, right: 4),
                    const MyAssetImage(Assets.mainHomeMoreIcon, width: 6, height: 8.5).marginOnly(right: 15),
                  ],
                ).onTap(viewModel.gotoRewardsPage).expanded(),
              ],
            ).expanded(),
            //底部分割线
            Container(color: context.appColors.dividerDefault, height: 0.5, width: double.infinity),
          ],
        ),
      ),
    );
  }

  Widget _buildSliverSpace(double size) {
    return SliverToBoxAdapter(
      child: SizedBox(height: size),
    );
  }

  //九宫格选项组
  Widget _buildCategoryWidget(BuildContext context, WidgetRef ref) {
    final viewModel = ref.read(homeViewModelProvider.notifier);
    final state = ref.watch(homeViewModelProvider);

    return SliverGrid(
      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
        crossAxisCount: 3, // 三列
        mainAxisSpacing: 10.0, // 主轴（上下）的间距
        crossAxisSpacing: 0.0, // 交叉轴（左右）的间距
        childAspectRatio: 9 / 8, // 子组件的宽高比
      ),
      delegate: SliverChildBuilderDelegate(
        (BuildContext context, int index) {
          return HomeCategoryItem(
            category: state.homeCategory[index],
          ).onTap(() {
            viewModel.switchCategory(index);
          }); // 生成每个网格项
        },
        childCount: state.homeCategory.length, // 总共的网格项数
      ),
    );
  }

  //Banner的布局
  Widget _buildBannerImage(WidgetRef ref, ValueNotifier<int> bannerIndex) {
    final viewModel = ref.read(homeViewModelProvider.notifier);
    final state = ref.watch(homeViewModelProvider);

    return SliverToBoxAdapter(
      child: Container(
        width: double.infinity,
        margin: const EdgeInsets.only(top: 21, left: 15, right: 15),
        child: state.homeIndex != null && state.homeIndex!.banners.isNotEmpty
            ? Stack(
                alignment: Alignment.bottomCenter, // 设置 Stack 的对齐方式为底部中心
                children: [
                  CarouselSlider(
                    options: CarouselOptions(
                      aspectRatio: 345 / 152.5,
                      viewportFraction: 1,
                      initialPage: 0,
                      enableInfiniteScroll: true,
                      reverse: false,
                      autoPlay: true,
                      autoPlayInterval: const Duration(seconds: 5),
                      autoPlayAnimationDuration: const Duration(milliseconds: 800),
                      autoPlayCurve: Curves.fastOutSlowIn,
                      enlargeCenterPage: true,
                      scrollDirection: Axis.horizontal,
                      onPageChanged: (index, reason) {
                        bannerIndex.value = index;
                      },
                    ),
                    items: state.homeIndex!.banners.map<Widget>((item) {
                      return MyLoadImage(
                        item.image,
                        width: double.infinity,
                        cornerRadius: 5,
                      );
                    }).toList(),
                  ),
                  Positioned(
                    bottom: 10, // 距离底部 20 像素
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: state.homeIndex!.banners.map((item) {
                        //难道就没有indexMap,要么就转换为Map的方式进行遍历Map
                        int index = state.homeIndex!.banners.indexOf(item);
                        return Container(
                          width: 6.5,
                          height: 6.5,
                          margin: const EdgeInsets.symmetric(horizontal: 3.5),
                          decoration: BoxDecoration(
                            shape: BoxShape.circle,
                            color: bannerIndex.value == index
                                ? const Color(0x4D000000) // 选中状态颜色
                                : const Color(0x1A000000), // 未选中状态颜色
                          ),
                        );
                      }).toList(),
                    ),
                  ),
                ],
              )
            : AspectRatio(
                aspectRatio: 345 / 152.5,
                child: MyLoadImage(
                  Assets.baseLibImageDefaultPlaceholder,
                  width: double.infinity,
                  cornerRadius: 5,
                ),
              ),
      ),
    );
  }

  //最新新闻
  Widget _buildLastNews(BuildContext context, WidgetRef ref) {
    final viewModel = ref.read(homeViewModelProvider.notifier);
    final state = ref.watch(homeViewModelProvider);

    return SliverToBoxAdapter(
        child: Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      mainAxisAlignment: MainAxisAlignment.start,
      children: [
        MyTextView(
          S.current.latest_news,
          fontSize: 16,
          marginTop: 14,
          marginBottom: 14,
          isFontMedium: true,
          onClick: viewModel.gotoLastNewsPage,
          textColor: context.appColors.textPrimary,
        ),
        Row(
          mainAxisAlignment: MainAxisAlignment.spaceAround, // 均匀排布
          children: List.generate(state.lastNews.length, (index) {
            return Expanded(
              // 使用 Expanded 使每个子项占据相同空间
              child: LastNewsItem(
                lastNews: state.lastNews[index],
                onItemTap: () {
                  //根据不同的索引跳转到不同的PageView指定页面
                  if (index == 0) {
                    LatestNewsPropertyScreen.startInstance(context: context);
                  } else if (index == 1) {
                    LatestNewsInternalScreen.startInstance(context: context);
                  } else if (index == 2) {
                    LatestNewsInfoScreen.startInstance(context: context);
                  } else if (index == 3) {
                    LatestNewsPublishScreen.startInstance(context: context);
                  }
                },
              ),
            );
          }),
        ),
      ],
    ).paddingOnly(left: 15, right: 15));
  }

  //最新的交易列表
  Widget _buildLastTransaction(BuildContext context, HomeState state) {
    return SliverPadding(
      padding: const EdgeInsets.symmetric(horizontal: 15),
      sliver: DecoratedSliver(
        decoration: BoxDecoration(
          color: context.appColors.whiteBG,
          borderRadius: BorderRadius.circular(5.0),
          boxShadow: [
            BoxShadow(
              color: const Color(0xFF656565).withOpacity(0.1),
              offset: const Offset(0, 1.5),
              blurRadius: 2.5,
              spreadRadius: 1.5,
            ),
          ],
        ),
        sliver: SliverPadding(
          padding: const EdgeInsets.symmetric(vertical: 12, horizontal: 20),
          sliver: SliverList(
            delegate: SliverChildBuilderDelegate(
              (BuildContext context, int index) {
                return Padding(
                  padding: const EdgeInsets.symmetric(vertical: 10),
                  child: LastTransItem(
                    lastTrans: state.homeIndex!.latestTransactions[index],
                  ),
                );
              },
              childCount: state.homeIndex?.latestTransactions.length ?? 0,
            ),
          ),
        ),
      ),
    );
  }

  //房产新闻的双列表
  Widget _buildPropertyNews(BuildContext context, WidgetRef ref) {
    final state = ref.watch(homeViewModelProvider);
    final propertyNewsList = state.homeIndex?.propertyNews ?? [];

    // 计算行数和每行的元素
    int totalItems = propertyNewsList.length;
    int firstRowCount = (totalItems + 1) ~/ 2; // 第1行的数量 (奇数时多一个)
    int secondRowCount = totalItems ~/ 2; // 第2行的数量

    return SliverList(
      delegate: SliverChildListDelegate(
        [
          // 第一个水平滑动列表
          _buildPropertyNewsHorizontalList(propertyNewsList.sublist(0, firstRowCount)),

          const SizedBox(height: 10),

          // 第二个水平滑动列表
          if (secondRowCount > 0) // 只有在有第二行内容时才显示
            _buildPropertyNewsHorizontalList(propertyNewsList.sublist(firstRowCount, firstRowCount + secondRowCount)),
        ],
      ),
    );
  }

  Widget _buildPropertyNewsHorizontalList(List<HomeListPropertyNews> propertyNews) {
    return SingleChildScrollView(
      scrollDirection: Axis.horizontal,
      physics: const BouncingScrollPhysics(),
      clipBehavior: Clip.none,
      child: Row(
        children: propertyNews.map((news) {
          return PropertyNews(news: news); // 假设 PropertyNews 需要传入一个 news 参数
        }).toList(),
      ).marginOnly(left: 15, right: 15),
    );
  }

  //管理员介绍
  Widget _buildManagementGuides(BuildContext context, WidgetRef ref) {
    final viewModel = ref.read(homeViewModelProvider.notifier);
    final state = ref.watch(homeViewModelProvider);

    return SliverToBoxAdapter(
        child: Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      mainAxisAlignment: MainAxisAlignment.start,
      children: [
        MyTextView(
          S.current.strata_management_guides,
          fontSize: 16,
          marginTop: 14,
          marginBottom: 14,
          onClick: viewModel.gotoManageGuidePage,
          isFontMedium: true,
          textColor: context.appColors.textPrimary,
        ),
        SingleChildScrollView(
          scrollDirection: Axis.horizontal,
          physics: const BouncingScrollPhysics(),
          clipBehavior: Clip.none,
          child: Row(
            children: state.homeIndex?.strataManagementGuides == null
                ? [const SizedBox.shrink()]
                : List.generate(state.homeIndex!.strataManagementGuides.length, (index) {
                    return ManageGuideItem(
                      manageGuide: state.homeIndex!.strataManagementGuides[index],
                    );
                  }),
          ),
        )
      ],
    ).paddingOnly(left: 15, right: 15));
  }

  /// 根据现在的小时数，返回 早上好，中午好，下午好，晚上好 这四个字符串
  String _formatNowGreetingText(WidgetRef ref) {
    final now = DateTime.now();
    final hour = now.hour;
    String greeting;
    if (hour < 12) {
      greeting = S.current.good_morning(UserConfigService.getState(ref: ref).userName ?? "-");
    } else if (hour < 18) {
      greeting = S.current.good_afternoon(UserConfigService.getState(ref: ref).userName ?? "-");
    } else {
      greeting = S.current.good_evening(UserConfigService.getState(ref: ref).userName ?? "-");
    }
    return greeting;
  }
}