import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'dart:ui';
import '../controllers/explore_controller.dart';
import '../../../core/widgets/common_bottom_nav.dart';

class ExploreView extends GetView<ExploreController> {
  const ExploreView({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.grey[50],
      body: SafeArea(
        child: Column(
          children: [
            // 标题和搜索
            _buildHeaderAndSearch(),
            
            // 主要内容（可滚动）
            Expanded(
              child: SingleChildScrollView(
                physics: const BouncingScrollPhysics(),
                child: Padding(
                  padding: EdgeInsets.fromLTRB(16.w, 0, 16.w, 80.h),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      // 特色功能
                      _buildFeaturedCard(),
                      
                      // AI功能列表
                      SizedBox(height: 24.h),
                      _buildAIFeaturesSection(),
                      
                      // 热门功能场景
                      SizedBox(height: 24.h),
                      _buildFunctionScenesSection(),
                      
                      // 新功能推荐
                      SizedBox(height: 24.h),
                      _buildNewFeatureSection(),
                    ],
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
      bottomNavigationBar: const CommonBottomNav(currentIndex: 1),
    );
  }

  // 标题和搜索
  Widget _buildHeaderAndSearch() {
    return Padding(
      padding: EdgeInsets.all(16.w),
      child: Column(
        children: [
          // 标题和菜单按钮
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Text(
                '发现',
                style: TextStyle(
                  fontSize: 24.sp,
                  fontWeight: FontWeight.bold,
                  color: Colors.grey[800],
                ),
              ),
              Container(
                width: 32.w,
                height: 32.w,
                decoration: BoxDecoration(
                  color: Colors.grey[200],
                  shape: BoxShape.circle,
                ),
                child: IconButton(
                  icon: Icon(Icons.more_vert, size: 16.sp),
                  padding: EdgeInsets.zero,
                  onPressed: () {},
                ),
              ),
            ],
          ),
          
          // 搜索框
          SizedBox(height: 16.h),
          Container(
            decoration: BoxDecoration(
              color: Colors.grey[100],
              borderRadius: BorderRadius.circular(12.r),
            ),
            child: TextField(
              controller: controller.searchController,
              decoration: InputDecoration(
                hintText: '搜索AI功能...',
                hintStyle: TextStyle(
                  fontSize: 14.sp,
                  color: Colors.grey[400],
                ),
                prefixIcon: Icon(
                  Icons.search,
                  size: 20.sp,
                  color: Colors.grey[400],
                ),
                border: InputBorder.none,
                contentPadding: EdgeInsets.symmetric(vertical: 12.h),
              ),
              textInputAction: TextInputAction.search,
              onSubmitted: (_) => controller.search(),
            ),
          ),
        ],
      ),
    );
  }

  // 特色功能卡片
  Widget _buildFeaturedCard() {
    return Container(
      height: 180.h,
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(24.r),
        boxShadow: [
          BoxShadow(
            color: Colors.grey.withOpacity(0.2),
            blurRadius: 10,
            offset: const Offset(0, 4),
          ),
        ],
      ),
      child: Stack(
        children: [
          // 背景图片
          ClipRRect(
            borderRadius: BorderRadius.circular(24.r),
            child: Container(
              color: Colors.blue.shade900, // 预设颜色，图片加载失败时显示
              child: Image.network(
                'https://images.unsplash.com/photo-1526378722484-bd91ca387e72?ixlib=rb-4.0.3&auto=format&fit=crop&w=1000&q=80',
                width: double.infinity,
                height: 180.h,
                fit: BoxFit.cover,
                errorBuilder: (context, error, stackTrace) {
                  return Container(
                    color: Colors.blue.shade900,
                    width: double.infinity,
                    height: 180.h,
                    child: Icon(
                      Icons.image_not_supported,
                      color: Colors.white,
                      size: 40.sp,
                    ),
                  );
                },
              ),
            ),
          ),
          
          // 渐变遮罩
          Container(
            decoration: BoxDecoration(
              borderRadius: BorderRadius.circular(24.r),
              gradient: LinearGradient(
                begin: Alignment.topCenter,
                end: Alignment.bottomCenter,
                colors: [
                  Colors.black.withOpacity(0.1),
                  Colors.black.withOpacity(0.6),
                ],
              ),
            ),
          ),
          
          // 文本内容
          Padding(
            padding: EdgeInsets.all(24.w),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.end,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  '智能耳机，无限可能',
                  style: TextStyle(
                    fontSize: 22.sp,
                    fontWeight: FontWeight.bold,
                    color: Colors.white,
                  ),
                ),
                SizedBox(height: 4.h),
                Text(
                  '探索DeepVoice提供的AI功能',
                  style: TextStyle(
                    fontSize: 14.sp,
                    color: Colors.white.withOpacity(0.8),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  // AI功能部分
  Widget _buildAIFeaturesSection() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          'AI功能',
          style: TextStyle(
            fontSize: 18.sp,
            fontWeight: FontWeight.w600,
            color: Colors.grey[800],
          ),
        ),
        SizedBox(height: 16.h),
        GridView.builder(
          shrinkWrap: true,
          physics: const NeverScrollableScrollPhysics(),
          gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
            crossAxisCount: 2,
            crossAxisSpacing: 16.w,
            mainAxisSpacing: 16.h,
            childAspectRatio: 1.0,
          ),
          itemCount: controller.aiFeatures.length,
          itemBuilder: (context, index) {
            final feature = controller.aiFeatures[index];
            return _buildAIFeatureItem(feature, index);
          },
        ),
      ],
    );
  }

  // AI功能项
  Widget _buildAIFeatureItem(AIFeature feature, int index) {
    return GestureDetector(
      onTap: () => controller.onAIFeatureTap(index),
      child: Container(
        padding: EdgeInsets.all(20.w),
        decoration: BoxDecoration(
          gradient: LinearGradient(
            begin: Alignment.topLeft,
            end: Alignment.bottomRight,
            colors: [
              feature.startColor,
              feature.endColor,
            ],
          ),
          borderRadius: BorderRadius.circular(20.r),
          boxShadow: [
            BoxShadow(
              color: Colors.grey.withOpacity(0.1),
              blurRadius: 4,
              offset: const Offset(0, 2),
            ),
          ],
        ),
        child: Stack(
          children: [
            // 图标圆圈
            Align(
              alignment: Alignment.topLeft,
              child: Container(
                width: 48.w,
                height: 48.w,
                decoration: BoxDecoration(
                  color: feature.iconColor.withOpacity(0.2),
                  shape: BoxShape.circle,
                ),
                child: Icon(
                  feature.icon,
                  size: 24.sp,
                  color: feature.iconColor,
                ),
              ),
            ),
            // 文本内容
            Padding(
              padding: EdgeInsets.only(top: 58.h),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                mainAxisSize: MainAxisSize.min,
                children: [
                  // 标题
                  Text(
                    feature.title,
                    style: TextStyle(
                      fontSize: 18.sp,
                      fontWeight: FontWeight.w600,
                      color: Colors.grey[800],
                    ),
                    maxLines: 1,
                    overflow: TextOverflow.ellipsis,
                  ),
                  SizedBox(height: 4.h),
                  // 描述
                  Text(
                    feature.description,
                    style: TextStyle(
                      fontSize: 13.sp,
                      color: Colors.grey[600],
                    ),
                    maxLines: 1,
                    overflow: TextOverflow.ellipsis,
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  // 热门功能场景部分
  Widget _buildFunctionScenesSection() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          '热门功能场景',
          style: TextStyle(
            fontSize: 18.sp,
            fontWeight: FontWeight.w600,
            color: Colors.grey[800],
          ),
        ),
        SizedBox(height: 16.h),
        ListView.builder(
          shrinkWrap: true,
          physics: const NeverScrollableScrollPhysics(),
          itemCount: controller.functionScenes.length,
          itemBuilder: (context, index) {
            final scene = controller.functionScenes[index];
            return Padding(
              padding: EdgeInsets.only(bottom: 16.h),
              child: _buildFunctionSceneItem(scene, index),
            );
          },
        ),
      ],
    );
  }

  // 功能场景项
  Widget _buildFunctionSceneItem(FunctionScene scene, int index) {
    return GestureDetector(
      onTap: () => controller.onFunctionSceneTap(index),
      child: Container(
        padding: EdgeInsets.all(16.w),
        decoration: BoxDecoration(
          color: Colors.grey[100],
          borderRadius: BorderRadius.circular(16.r),
          boxShadow: [
            BoxShadow(
              color: Colors.grey.withOpacity(0.1),
              blurRadius: 4,
              offset: const Offset(0, 2),
            ),
          ],
        ),
        child: Row(
          children: [
            // 图标
            Container(
              width: 48.w,
              height: 48.w,
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  begin: Alignment.topLeft,
                  end: Alignment.bottomRight,
                  colors: [
                    scene.startColor,
                    scene.endColor,
                  ],
                ),
                borderRadius: BorderRadius.circular(12.r),
              ),
              child: Icon(
                scene.icon,
                size: 24.sp,
                color: scene.iconColor,
              ),
            ),
            SizedBox(width: 16.w),
            
            // 文本内容
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    scene.title,
                    style: TextStyle(
                      fontSize: 16.sp,
                      fontWeight: FontWeight.w600,
                      color: Colors.grey[800],
                    ),
                  ),
                  SizedBox(height: 4.h),
                  Text(
                    scene.description,
                    style: TextStyle(
                      fontSize: 12.sp,
                      color: Colors.grey[600],
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  // 新功能推荐部分
  Widget _buildNewFeatureSection() {
    return Container(
      padding: EdgeInsets.all(20.w),
      decoration: BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: [
            Colors.purple.shade100,
            Colors.purple.shade200,
          ],
        ),
        borderRadius: BorderRadius.circular(16.r),
        boxShadow: [
          BoxShadow(
            color: Colors.grey.withOpacity(0.1),
            blurRadius: 8,
            offset: const Offset(0, 4),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // 图标
          Container(
            width: 48.w,
            height: 48.w,
            decoration: BoxDecoration(
              color: Colors.purple.shade200,
              borderRadius: BorderRadius.circular(12.r),
            ),
            child: Icon(
              Icons.lightbulb_outline,
              size: 24.sp,
              color: Colors.purple.shade600,
            ),
          ),
          SizedBox(height: 16.h),
          
          // 标题
          Text(
            'AI歌手模式',
            style: TextStyle(
              fontSize: 20.sp,
              fontWeight: FontWeight.bold,
              color: Colors.grey[800],
            ),
          ),
          SizedBox(height: 8.h),
          
          // 描述
          Text(
            '用你喜欢的歌手声音演唱任何歌曲，甚至是你自己创作的歌曲',
            style: TextStyle(
              fontSize: 14.sp,
              color: Colors.grey[600],
            ),
          ),
          SizedBox(height: 16.h),
          
          // 按钮
          ElevatedButton(
            onPressed: controller.tryNewFeature,
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.purple.shade500,
              foregroundColor: Colors.white,
              padding: EdgeInsets.symmetric(horizontal: 20.w, vertical: 10.h),
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(12.r),
              ),
            ),
            child: Text(
              '立即尝试',
              style: TextStyle(
                fontSize: 14.sp,
                fontWeight: FontWeight.w500,
              ),
            ),
          ),
        ],
      ),
    );
  }
}