import 'package:electronic_assistant/base/base_page.dart';
import 'package:electronic_assistant/module/store/view.dart';
import 'package:electronic_assistant/resource/assets.gen.dart';
import 'package:electronic_assistant/resource/colors.gen.dart';
import 'package:electronic_assistant/resource/string.gen.dart';
import 'package:electronic_assistant/utils/expand.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:get/get.dart';
import '../../utils/fixed_size_tab_indicator.dart';
import 'controller.dart';

class HomePage extends BasePage<HomePageController> {
  const HomePage({super.key});

  @override
  Color backgroundColor() {
    return '#F6F5F8'.color;
  }

  @override
  double? pageHeight() {
    return double.infinity;
  }

  @override
  Widget buildBody(BuildContext context) {
    return Stack(
      children: [
        buildBgBox(),
        Column(
          children: [
            Obx(() {
              return Container(
                color: '#EBF0FE'.color.withOpacity(controller.topBgOpacity),
                child: Column(
                  children: [
                    SizedBox(height: MediaQuery.of(context).padding.top),
                    Container(
                      padding: const EdgeInsets.all(12).w,
                      child: buildOperationBar(),
                    )
                  ],
                ),
              );
            }),
            Expanded(
              child: DefaultTabController(
                  length: controller.tabList.length,
                  child: NestedScrollView(
                      controller: controller.scrollController,
                      headerSliverBuilder:
                          (BuildContext context, bool innerBoxIsScrolled) {
                        return [
                          SliverToBoxAdapter(child: _buildHeaderView()),
                          SliverPersistentHeader(
                              floating: true,
                              pinned: true,
                              delegate: CommonSliverHeaderDelegate(
                                  backgroundColor: '#F6F5F8'.color,
                                  child: PreferredSize(
                                      preferredSize:
                                          const Size(double.infinity, 52),
                                      child: _buildTabBar()))),
                        ];
                      },
                      body: _buildHomeTabView())),
            ),
          ],
        ),
      ],
    );
  }

  Widget _buildTabBar() {
    return TabBar(
      padding: EdgeInsets.only(left: 12.w, bottom: 6.h),
      tabAlignment: TabAlignment.start,
      labelPadding: EdgeInsets.only(right: 32.w),
      isScrollable: true,
      indicator: FixedSizeTabIndicator(
          width: 11.w, height: 4.w, radius: 17, color: ColorName.colorPrimary),
      dividerHeight: 0,
      unselectedLabelStyle: TextStyle(fontSize: 16.sp, color: '#7C8191'.color),
      labelStyle: TextStyle(
          fontSize: 16.sp,
          color: ColorName.primaryTextColor,
          fontWeight: FontWeight.bold),
      tabs: controller.tabList.map((bean) => Tab(text: bean.title)).toList(),
    );
  }

  Widget _buildHomeTabView() {
    return TabBarView(children: controller.tabList.map((e) => e.view).toList());
  }

  @override
  bool immersive() {
    return true;
  }

  Widget _buildHeaderView() {
    return Container(
      padding: EdgeInsets.only(left: 12.w, right: 12.w, top: 8.h, bottom: 8.h),
      child: getHomeHeadView(
        key: controller.headGuideKey,
        recordClick: () {
          controller.onRecordClick();
        },
        pickerAudioFileClick: () {
          controller.onPickerAudioFile();
        },
      ),
    );
  }

  Row buildOperationBar() {
    return Row(children: [buildGoLogin(), const Spacer(), buildGoStore()]);
  }

  GestureDetector buildGoStore() {
    return GestureDetector(
        child: Container(
          decoration: BoxDecoration(
            gradient: LinearGradient(
              colors: ['#FFD3A8'.color, '#FFEDE1'.color, '#FFDBC2'.color],
              stops: const [0, 0.5, 1.0],
              begin: Alignment.bottomLeft,
              end: Alignment.topRight,
            ),
            borderRadius: BorderRadius.circular(100),
          ),
          padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8).w,
          child: Text(StringName.homeChargeTxt.tr,
              style: TextStyle(
                  height: 1,
                  fontSize: 13.sp,
                  color: '#773C23'.color,
                  fontWeight: FontWeight.bold)),
        ),
        onTap: () {
          StorePage.start(fromType: StoreFromType.home);
        });
  }

  Widget buildGoLogin() {
    return Obx(() {
      return GestureDetector(
        onTap: () {
          if (controller.isLogin) {
            controller.showLoginDrawer();
          } else {
            controller.onLoginClick();
          }
        },
        child: Container(
          color: ColorName.transparent,
          child: Row(
            children: [
              SizedBox(
                  width: 36.w,
                  height: 36.w,
                  child: controller.isLogin
                      ? Assets.images.iconHomeLogged.image()
                      : Assets.images.iconHomeNoLogin.image()),
              SizedBox(width: 8.w),
              Text(controller.loginTxt,
                  style: TextStyle(
                      fontWeight: FontWeight.bold,
                      fontSize: 15.sp,
                      color: ColorName.primaryTextColor)),
              SizedBox(width: 6.w),
              controller.isLogin
                  ? const SizedBox.shrink()
                  : SizedBox(
                      height: 16.w,
                      child: Assets.images.iconGoLoginArrow.image())
            ],
          ),
        ),
      );
    });
  }

  Widget buildBgBox() {
    return AspectRatio(
      aspectRatio: 360 / 188,
      child: Container(
        decoration: BoxDecoration(
          gradient: LinearGradient(
            begin: Alignment.topCenter,
            end: Alignment.bottomCenter,
            colors: ['#CDD1FA'.color, '#FAFFFF'.color, '#F6F5F8'.color],
          ),
        ),
      ),
    );
  }
}

Widget getHomeHeadView(
    {GlobalKey? key,
    VoidCallback? recordClick,
    VoidCallback? pickerAudioFileClick}) {
  return Row(
    key: key,
    children: [
      Expanded(
        child: _buildHeaderCard(
            StringName.homeTalkAudio.tr,
            StringName.homeTalkQuickAudio.tr,
            Assets.images.iconHomeTalkRecordCard.image().image, [
          "#1763F9".toColor(),
          "#28B2FF".toColor(),
        ], onTap: () {
          recordClick?.call();
        }),
      ),
      SizedBox(width: 8.w),
      Expanded(
        child: _buildHeaderCard(
            StringName.homeTalkImportAudio.tr,
            StringName.homeTalkAnalyzeLocalAudio.tr,
            Assets.images.iconHomeTalkSelectCard.image().image, [
          "#5869ED".toColor(),
          "#6E8AF7".toColor(),
        ], onTap: () {
          pickerAudioFileClick?.call();
        }),
      ),
    ],
  );
}

Widget _buildHeaderCard(
  String title,
  String content,
  ImageProvider imageProvider,
  List<Color> bgColor, {
  VoidCallback? onTap,
}) {
  return GestureDetector(
    onTap: onTap,
    child: AspectRatio(
      aspectRatio: 164 / 80,
      child: Container(
        decoration: BoxDecoration(
          gradient: LinearGradient(
            begin: Alignment.topLeft,
            end: Alignment.bottomRight,
            colors: bgColor,
          ),
          borderRadius: BorderRadius.circular(12),
        ),
        child: Stack(
          children: [
            Align(
              alignment: Alignment.centerRight,
              child: AspectRatio(
                aspectRatio: 1,
                child: SizedBox(
                    height: double.infinity,
                    child: Image(image: imageProvider)),
              ),
            ),
            Align(
              alignment: Alignment.centerLeft,
              child: IntrinsicHeight(
                child: Container(
                  margin: EdgeInsets.only(left: 12.w),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(title,
                          style: TextStyle(
                              fontSize: 16.sp,
                              color: ColorName.white,
                              fontWeight: FontWeight.bold)),
                      SizedBox(height: 4.h),
                      Text(content,
                          style: TextStyle(
                              fontSize: 12.sp, color: ColorName.white80)),
                    ],
                  ),
                ),
              ),
            )
          ],
        ),
      ),
    ),
  );
}

class CommonSliverHeaderDelegate extends SliverPersistentHeaderDelegate {
  PreferredSize child; //传入preferredsize组件，因为此组件需要固定高度
  Color? backgroundColor; //需要设置的背景色
  CommonSliverHeaderDelegate({required this.child, this.backgroundColor});

  @override
  Widget build(
      BuildContext context, double shrinkOffset, bool overlapsContent) {
    return Container(
      color: backgroundColor,
      child: child,
    );
  }

  @override
  double get maxExtent => child.preferredSize.height;

  @override
  double get minExtent => child.preferredSize.height;

  @override
  bool shouldRebuild(covariant SliverPersistentHeaderDelegate oldDelegate) {
    return true;
  }
}