import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:get/get.dart';
import 'package:nomo/app/constants/iconfont/iconfont.dart';
import 'package:nomo/config/theme/dark_theme_colors.dart';
import 'package:nomo/config/theme/theme_extensions/theme_extension.dart';
import 'package:video_player/video_player.dart';
import '../../../../config/theme/light_theme_colors.dart';
import '../../../../config/translations/strings_enum.dart';
import '../../../constants/assets.dart';
import '../../../widgets/info_card.dart';
import '../../../widgets/ix_image.dart';
import '../controllers/subscription_controller.dart';

class SubscriptionView extends GetView<SubscriptionController> {
  const SubscriptionView({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Get.reactiveTheme.scaffoldBackgroundColor,
      body: Stack(
        children: [
          // 视频背景层（只显示顶部214高度）
          Obx(() {
            if (controller.isVideoInitialized.value) {
              return Positioned(
                top: 0,
                left: 0,
                right: 0,
                height: 214.w,
                child: ClipRect(
                  child: FittedBox(
                    fit: BoxFit.cover,
                    child: SizedBox(
                      width: controller.videoController.value.size.width,
                      height: controller.videoController.value.size.height,
                      child: VideoPlayer(controller.videoController),
                    ),
                  ),
                ),
              );
            }
            return const SizedBox.shrink();
          }),
          // 渐变遮罩层（只在视频区域）
          Positioned(
            top: 0,
            left: 0,
            right: 0,
            height: 214.w,
            child: Container(
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  begin: Alignment.topCenter,
                  end: Alignment.bottomCenter,
                  colors: ReactiveTheme.isLightTheme
                      ? [Colors.black, Color(0x99F5D89F), Color(0xFFEFF1F5)]
                      : [Colors.black.withValues(alpha: 0.6), Colors.black],
                  stops: ReactiveTheme.isLightTheme
                      ? const [0.0, 0.7, 1.0]
                      : const [0.0, 1.0],
                ),
              ),
            ),
          ),
          // 内容层
          SafeArea(
            child: Column(
              children: [
                _buildAppBar(),
                Expanded(
                  child: SingleChildScrollView(
                    padding: EdgeInsets.symmetric(horizontal: 20.w),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        16.verticalSpaceFromWidth,
                        _buildCurrentSubscription(),
                        24.verticalSpaceFromWidth,
                        _buildPlanOptions(),
                        // 仅 userLevel == 3 时显示套餐变更信息
                        if (controller.showPlanChangeInfo)
                          _buildPlanChangeInfo(),
                        16.verticalSpaceFromWidth,
                        _buildPremiumFeatures(),
                        16.verticalSpaceFromWidth,
                      ],
                    ),
                  ),
                ),
                _buildBottomSection(),
              ],
            ),
          ),
        ],
      ),
    );
  }

  // 顶部标题栏
  Widget _buildAppBar() {
    return Padding(
      padding: EdgeInsets.symmetric(horizontal: 20.w, vertical: 12.h),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          SizedBox(width: 32.w),
          Text(
            Strings.subscription.tr,
            style: TextStyle(
              fontSize: 16.sp,
              height: 1.4,
              fontWeight: FontWeight.w500,
              color: Colors.white,
            ),
          ),
          GestureDetector(
            onTap: () => Get.back(),
            child: Container(
              width: 24.w,
              height: 24.w,
              decoration: BoxDecoration(
                color: ReactiveTheme.isLightTheme
                    ? LightThemeColors.strokes1
                    : Color(0xFF333333),
                shape: BoxShape.circle,
              ),
              child: Icon(
                Icons.close_rounded,
                color: ReactiveTheme.isLightTheme
                    ? LightThemeColors.text2
                    : Colors.white,
                size: 16.w,
              ),
            ),
          ),
        ],
      ),
    );
  }

  // 当前订阅信息
  Widget _buildCurrentSubscription() {
    return Obx(() {
      // 判断是否有订阅
      if (!controller.hasCurrentSubscription) {
        // 没有订阅，只显示钻石图标
        return Center(
          child: IXImage(
            source: Assets.subscriptionDiamond,
            width: 92.w,
            height: 80.w,
            sourceType: ImageSourceType.asset,
          ),
        );
      }

      // 有订阅，显示当前套餐信息
      return Row(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          // 钻石图标
          IXImage(
            source: Assets.subscriptionDiamond,
            width: 92.w,
            height: 80.w,
            sourceType: ImageSourceType.asset,
          ),
          12.horizontalSpace,
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(
                  children: [
                    IXImage(
                      source: Assets.subscriptionWallet,
                      width: 20.w,
                      height: 20.w,
                      sourceType: ImageSourceType.asset,
                    ),
                    4.horizontalSpace,
                    Text(
                      Strings.currentSubscription.tr,
                      style: TextStyle(
                        fontSize: 14.sp,
                        height: 1.4,
                        color: ReactiveTheme.isLightTheme
                            ? LightThemeColors.text1
                            : DarkThemeColors.subscriptionColor,
                        fontWeight: FontWeight.w700,
                      ),
                    ),
                  ],
                ),
                10.verticalSpaceFromWidth,
                Text(
                  controller.currentPlanPriceDisplay,
                  style: TextStyle(
                    fontSize: 14.sp,
                    height: 1.4,
                    color: Get.reactiveTheme.textTheme.bodyLarge!.color,
                  ),
                ),
              ],
            ),
          ),
        ],
      );
    });
  }

  // 订阅计划选项
  Widget _buildPlanOptions() {
    return Obx(() {
      // 加载中状态
      if (controller.isLoadingPlans.value) {
        return Padding(
          padding: EdgeInsets.symmetric(vertical: 40.w),
          child: Center(
            child: CircularProgressIndicator(
              color: DarkThemeColors.subscriptionColor,
            ),
          ),
        );
      }

      // 空数据状态
      if (controller.planCount == 0) {
        return Padding(
          padding: EdgeInsets.symmetric(vertical: 40.w),
          child: Center(
            child: Text(
              '暂无可用套餐',
              style: TextStyle(
                fontSize: 14.sp,
                color: DarkThemeColors.hintTextColor,
              ),
            ),
          ),
        );
      }

      // 套餐列表
      return Column(
        children: List.generate(
          controller.planCount,
          (index) => _buildPlanItem(index),
        ),
      );
    });
  }

  Widget _buildPlanItem(int index) {
    return Obx(() {
      final isSelected = controller.selectedPlanIndex.value == index;
      final badge = controller.getPlanBadge(index);
      final badgeBgColor = controller.getPlanBadgeBgColor(index);
      final badgeTextColor = controller.getPlanBadgeTextColor(index);
      final badgeBorderColor = controller.getPlanBadgeBorderColor(index);

      return GestureDetector(
        onTap: () => controller.selectPlan(index),
        child: Container(
          margin: EdgeInsets.only(bottom: 18.w),
          decoration: BoxDecoration(
            color: Get.reactiveTheme.cardColor,
            borderRadius: BorderRadius.circular(12.r),
            border: Border.all(
              color: isSelected
                  ? DarkThemeColors.subscriptionColor
                  : Get.reactiveTheme.cardColor,
              width: 2.w,
            ),
          ),
          child: Stack(
            clipBehavior: Clip.none,
            children: [
              // 主要内容
              Padding(
                padding: EdgeInsets.all(10.w),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    // 左侧：价格信息
                    Expanded(
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(
                            controller.getPlanTitle(index),
                            style: TextStyle(
                              fontSize: 18.sp,
                              height: 1.4,
                              color:
                                  Get.reactiveTheme.textTheme.bodyLarge!.color,
                              fontWeight: FontWeight.w600,
                            ),
                          ),
                          Text(
                            controller.getPlanSubTitle(index),
                            style: TextStyle(
                              fontSize: 12.sp,
                              height: 1.6,
                              color: Get.reactiveTheme.hintColor,
                            ),
                          ),
                        ],
                      ),
                    ),
                    // 右侧：标题和选择框
                    Row(
                      children: [
                        Text(
                          controller.getPlanIntroduce(index),
                          style: TextStyle(
                            fontSize: 13.sp,
                            height: 1.4,
                            color: Get.reactiveTheme.textTheme.bodyLarge!.color,
                          ),
                        ),
                        8.horizontalSpace,
                        Container(
                          width: 20.w,
                          height: 20.w,
                          decoration: BoxDecoration(
                            shape: BoxShape.circle,
                            border: Border.all(
                              color: isSelected
                                  ? DarkThemeColors.primaryColor
                                  : ReactiveTheme.isLightTheme
                                  ? LightThemeColors.strokes1
                                  : Colors.white30,
                              width: 1.5.w,
                            ),
                            color: isSelected
                                ? DarkThemeColors.primaryColor
                                : Colors.transparent,
                          ),
                          child: isSelected
                              ? Icon(
                                  Icons.check,
                                  color: Colors.white,
                                  size: 12.w,
                                )
                              : null,
                        ),
                      ],
                    ),
                  ],
                ),
              ),
              // 标签固定在右上角，压在边框线上
              if (badge.isNotEmpty)
                Positioned(
                  top: -11.h,
                  right: 12.w,
                  child: Container(
                    padding: EdgeInsets.symmetric(horizontal: 6.w),
                    decoration: BoxDecoration(
                      color: badgeBgColor ?? Colors.black,
                      borderRadius: BorderRadius.circular(4.r),
                      border: badgeBorderColor != null
                          ? Border.all(color: badgeBorderColor, width: 1)
                          : null,
                    ),
                    child: Text(
                      badge,
                      style: TextStyle(
                        fontSize: 12.sp,
                        color: badgeTextColor ?? Colors.white,
                        height: 1.6,
                      ),
                    ),
                  ),
                ),
            ],
          ),
        ),
      );
    });
  }

  // 计划变更信息
  Widget _buildPlanChangeInfo() {
    return InfoCard(
      title: Strings.planChangeInfo.tr,
      items: [
        InfoItem(
          imageSource: Assets.subscriptionPlanChange1,
          title: Strings.whenItStarts.tr,
          description: Strings.yourNewPlanBeginsRightAway.tr,
          iconColor: DarkThemeColors.primaryColor,
        ),
        InfoItem(
          imageSource: Assets.subscriptionPlanChange2,
          title: Strings.whatHappensToYourBalance.tr,
          description: Strings.anyUnusedAmountFromYourOldPlan.tr,
          iconColor: DarkThemeColors.primaryColor,
        ),
        InfoItem(
          imageSource: Assets.subscriptionPlanChange3,
          title: Strings.extraTime.tr,
          description: Strings.youllGetExtraDays.tr,
          iconColor: DarkThemeColors.primaryColor,
        ),
      ],
    );
  }

  // Premium 功能列表
  Widget _buildPremiumFeatures() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          Strings.premiumsIncluded.tr,
          style: TextStyle(
            fontSize: 16.sp,
            color: ReactiveTheme.isLightTheme
                ? LightThemeColors.primaryColor
                : DarkThemeColors.subscriptionColor,
            fontWeight: FontWeight.w500,
          ),
        ),
        16.verticalSpace,
        Container(
          padding: EdgeInsets.symmetric(vertical: 4.w, horizontal: 10.w),
          decoration: BoxDecoration(
            color: Get.reactiveTheme.cardColor,
            borderRadius: BorderRadius.circular(12.r),
          ),
          child: Column(
            children: [
              _buildFeatureItem(
                IconFont.icon60,
                Strings.unlockAllFreeLocations.tr,
              ),
              _buildFeatureItem(IconFont.icon61, Strings.unlockSmartMode.tr),
              _buildFeatureItem(IconFont.icon62, Strings.unlockMultiHopMode.tr),
              Obx(
                () => _buildFeatureItem(
                  IconFont.icon63,
                  Strings.premiumCanShareXDevices.trParams({
                    'count': controller.selectedPlanDeviceLimit,
                  }),
                ),
              ),
              _buildFeatureItem(
                IconFont.icon64,
                Strings.ownYourOwnPrivateServer.tr,
              ),
              _buildFeatureItem(IconFont.icon65, Strings.closeAds.tr),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildFeatureItem(IconData icon, String title) {
    return SizedBox(
      height: 44.w,
      child: Row(
        children: [
          Icon(
            icon,
            color: ReactiveTheme.isLightTheme
                ? LightThemeColors.primaryColor
                : DarkThemeColors.subscriptionColor,
            size: 24.w,
          ),
          12.horizontalSpace,
          Expanded(
            child: Text(
              title,
              style: TextStyle(
                fontSize: 13.sp,
                color: Get.reactiveTheme.hintColor,
              ),
            ),
          ),
          Container(
            width: 20.w,
            height: 20.w,
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              color: DarkThemeColors.subscriptionSelectColor,
            ),
            child: Icon(Icons.check, color: Colors.white, size: 12.w),
          ),
        ],
      ),
    );
  }

  // 底部按钮区域
  Widget _buildBottomSection() {
    return Container(
      padding: EdgeInsets.symmetric(vertical: 10.w, horizontal: 14.w),
      decoration: BoxDecoration(
        border: Border(
          top: BorderSide(color: Get.reactiveTheme.dividerColor, width: 1),
        ),
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          // 确认按钮
          GestureDetector(
            onTap: controller.subscribe,
            child: Container(
              width: double.infinity,
              height: 48.w,
              decoration: BoxDecoration(
                color: DarkThemeColors.backgroundColor,
                borderRadius: BorderRadius.circular(12.r),
              ),
              child: Center(
                child: Text(
                  controller.showPlanChangeInfo
                      ? Strings.confirmChange.tr
                      : Strings.subscription.tr,
                  style: TextStyle(
                    fontSize: 16.sp,
                    color: DarkThemeColors.subscriptionColor,
                    fontWeight: FontWeight.w600,
                  ),
                ),
              ),
            ),
          ),
          14.verticalSpaceFromWidth,
          // 底部链接
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              GestureDetector(
                onTap: controller.restorePurchases,
                child: Text(
                  Strings.restorePurchases.tr,
                  style: TextStyle(
                    fontSize: 16.sp,
                    color: Get.reactiveTheme.textTheme.bodyLarge!.color,
                  ),
                ),
              ),
              Text(
                '  |  ',
                style: TextStyle(
                  fontSize: 16.sp,
                  color: Get.reactiveTheme.hintColor,
                ),
              ),
              GestureDetector(
                onTap: controller.handlePaymentIssue,
                child: Text(
                  Strings.paymentIssue.tr,
                  style: TextStyle(
                    fontSize: 16.sp,
                    color: Get.reactiveTheme.textTheme.bodyLarge!.color,
                  ),
                ),
              ),
            ],
          ),
          14.verticalSpaceFromWidth,
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              IXImage(
                source: Assets.subscriptionGreenShield,
                width: 20.w,
                height: 20.w,
                sourceType: ImageSourceType.asset,
              ),
              10.horizontalSpace,
              Text(
                Strings.yearlyAutoRenewCancelAnytime.tr,
                style: TextStyle(
                  fontSize: 13.sp,
                  color: Get.reactiveTheme.hintColor,
                ),
              ),
            ],
          ),
        ],
      ),
    );
  }
}