import 'package:flutter/material.dart';
import 'package:dating_touchme_app/generated/assets.dart';

class FriendTab extends StatefulWidget {
  const FriendTab({super.key});

  @override
  State<FriendTab> createState() => _FriendTabState();
}

class _FriendTabState extends State<FriendTab> with TickerProviderStateMixin {
  late TabController _tabController;
  
  // 紫色主题色
  static const Color _primaryPurple = Color(0xff8E7BF6);

  // 模拟数据 - 我的关注列表
  final List<Map<String, dynamic>> _followList = [
    {
      "id": 1,
      "name": "叫我大王",
      "avatar": Assets.imagesAvatarsExample,
      "age": 30,
      "location": "广州",
      "gender": "female",
      "isFollowed": true,
    },
    {
      "id": 2,
      "name": "林园园",
      "avatar": Assets.imagesAvatarsExample,
      "age": 28,
      "location": "深圳",
      "gender": "female",
      "isFollowed": true,
    },
    {
      "id": 3,
      "name": "张雪",
      "avatar": Assets.imagesAvatarsExample,
      "age": 25,
      "location": "北京",
      "gender": "female",
      "isFollowed": true,
    },
  ];

  // 模拟数据 - 好友列表
  final List<Map<String, dynamic>> _friendList = [
    {
      "id": 1,
      "name": "林园园",
      "avatar": Assets.imagesAvatarsExample,
      "isOnline": true,
    },
    {
      "id": 2,
      "name": "李晖",
      "avatar": Assets.imagesAvatarsExample,
      "isOnline": false,
    },
    {
      "id": 3,
      "name": "李哲",
      "avatar": Assets.imagesAvatarsExample,
      "isOnline": false,
    },
    {
      "id": 4,
      "name": "李夏",
      "avatar": Assets.imagesAvatarsExample,
      "isOnline": true,
    },
    {
      "id": 5,
      "name": "张雪",
      "avatar": Assets.imagesAvatarsExample,
      "isOnline": false,
    },
    {
      "id": 6,
      "name": "王强",
      "avatar": Assets.imagesAvatarsExample,
      "isOnline": true,
    },
  ];

  // 模拟数据 - 粉丝列表
  final List<Map<String, dynamic>> _fansList = [
    {
      "id": 1,
      "name": "李晖",
      "avatar": Assets.imagesAvatarsExample,
      "age": 32,
      "location": "上海",
      "gender": "male",
    },
    {
      "id": 2,
      "name": "王强",
      "avatar": Assets.imagesAvatarsExample,
      "age": 29,
      "location": "杭州",
      "gender": "male",
    },
    {
      "id": 3,
      "name": "李哲",
      "avatar": Assets.imagesAvatarsExample,
      "age": 27,
      "location": "成都",
      "gender": "male",
    },
  ];

  @override
  void initState() {
    super.initState();
    _tabController = TabController(length: 3, vsync: this, initialIndex: 0);
    _tabController.addListener(() {
      setState(() {});
    });
  }

  @override
  void dispose() {
    _tabController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        // 顶部标签栏
        _buildTabBar(),
        // 内容区域
        Expanded(
          child: TabBarView(
            controller: _tabController,
            physics: const NeverScrollableScrollPhysics(), // 禁用手势滑动
            children: [
              _buildFollowList(), // 我的关注
              _buildFriendList(), // 好友
              _buildFansList(),   // 粉丝
            ],
          ),
        ),
      ],
    );
  }

  // 构建顶部标签栏
  Widget _buildTabBar() {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
      child: Row(
        children: [
          _buildTabButton("我的关注", 0),
          const SizedBox(width: 16),
          _buildTabButton("好友", 1),
          const SizedBox(width: 16),
          _buildTabButton("粉丝", 2),
        ],
      ),
    );
  }

  // 构建标签按钮
  Widget _buildTabButton(String title, int index) {
    final bool isSelected = _tabController.index == index;
    return Expanded(
      child: GestureDetector(
        onTap: () {
          if (_tabController.index != index) {
            _tabController.animateTo(index);
          }
        },
        child: Container(
          padding: const EdgeInsets.symmetric(vertical: 8),
          decoration: BoxDecoration(
            color: isSelected ? _primaryPurple : Colors.white,
            borderRadius: BorderRadius.circular(20),
          ),
          alignment: Alignment.center,
          child: Text(
            title,
            style: TextStyle(
              fontSize: 14,
              fontWeight: FontWeight.w500,
              color: isSelected ? Colors.white : Colors.black87,
            ),
          ),
        ),
      ),
    );
  }

  // 构建我的关注列表
  Widget _buildFollowList() {
    return ListView.builder(
      padding: const EdgeInsets.only(top: 8),
      itemCount: _followList.length,
      itemBuilder: (context, index) {
        final item = _followList[index];
        return _buildFollowItem(item);
      },
    );
  }

  // 构建关注项
  Widget _buildFollowItem(Map<String, dynamic> item) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(8),
      ),
      child: Row(
        children: [
          // 头像
          Container(
            width: 50,
            height: 50,
            decoration: BoxDecoration(
              borderRadius: BorderRadius.circular(25),
            ),
            child: ClipRRect(
              borderRadius: BorderRadius.circular(25),
              child: Image.asset(item["avatar"], fit: BoxFit.cover),
            ),
          ),
          
          // 信息
          Expanded(
            child: Container(
              margin: const EdgeInsets.only(left: 12),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Row(
                    children: [
                      Text(
                        item["name"],
                        style: const TextStyle(
                          fontWeight: FontWeight.bold,
                          fontSize: 16,
                        ),
                      ),
                      const SizedBox(width: 4),
                      // 性别图标
                      Icon(
                        item["gender"] == "female" ? Icons.female : Icons.male,
                        size: 16,
                        color: item["gender"] == "female" ? Colors.pink : Colors.blue,
                      ),
                    ],
                  ),
                  const SizedBox(height: 4),
                  Text(
                    "${item["age"]}岁·${item["location"]}",
                    style: const TextStyle(
                      color: Colors.grey,
                      fontSize: 12,
                    ),
                  ),
                ],
              ),
            ),
          ),
          
          // 已关注按钮
          Container(
            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
            decoration: BoxDecoration(
              color: Colors.grey[200],
              borderRadius: BorderRadius.circular(16),
            ),
            child: const Text(
              "已关注",
              style: TextStyle(
                fontSize: 12,
                color: Colors.grey,
              ),
            ),
          ),
        ],
      ),
    );
  }

  // 构建好友列表
  Widget _buildFriendList() {
    return ListView.builder(
      padding: const EdgeInsets.only(top: 8),
      itemCount: _friendList.length,
      itemBuilder: (context, index) {
        final friend = _friendList[index];
        return _buildFriendItem(friend);
      },
    );
  }

  // 构建好友项
  Widget _buildFriendItem(Map<String, dynamic> friend) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(8),
      ),
      child: Row(
        children: [
          // 头像
          Stack(
            children: [
              Container(
                width: 50,
                height: 50,
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(25),
                ),
                child: ClipRRect(
                  borderRadius: BorderRadius.circular(25),
                  child: Image.asset(friend["avatar"], fit: BoxFit.cover),
                ),
              ),
              if (friend["isOnline"] == true)
                Positioned(
                  bottom: 0,
                  right: 0,
                  child: Container(
                    width: 12,
                    height: 12,
                    decoration: BoxDecoration(
                      color: Colors.green,
                      borderRadius: BorderRadius.circular(6),
                      border: Border.all(color: Colors.white, width: 2),
                    ),
                  ),
                ),
            ],
          ),
          
          // 信息
          Expanded(
            child: Container(
              margin: const EdgeInsets.only(left: 12),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Text(
                    friend["name"],
                    style: const TextStyle(
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    friend["isOnline"] == true ? "在线" : "离线",
                    style: TextStyle(
                      color: friend["isOnline"] == true ? Colors.green : Colors.grey,
                      fontSize: 12,
                    ),
                  ),
                ],
              ),
            ),
          ),
          
          // 箭头图标
          const Icon(Icons.arrow_forward_ios, size: 16, color: Colors.grey),
        ],
      ),
    );
  }

  // 构建粉丝列表
  Widget _buildFansList() {
    return ListView.builder(
      padding: const EdgeInsets.only(top: 8),
      itemCount: _fansList.length,
      itemBuilder: (context, index) {
        final fan = _fansList[index];
        return _buildFanItem(fan);
      },
    );
  }

  // 构建粉丝项
  Widget _buildFanItem(Map<String, dynamic> fan) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(8),
      ),
      child: Row(
        children: [
          // 头像
          Container(
            width: 50,
            height: 50,
            decoration: BoxDecoration(
              borderRadius: BorderRadius.circular(25),
            ),
            child: ClipRRect(
              borderRadius: BorderRadius.circular(25),
              child: Image.asset(fan["avatar"], fit: BoxFit.cover),
            ),
          ),
          
          // 信息
          Expanded(
            child: Container(
              margin: const EdgeInsets.only(left: 12),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Row(
                    children: [
                      Text(
                        fan["name"],
                        style: const TextStyle(
                          fontWeight: FontWeight.bold,
                          fontSize: 16,
                        ),
                      ),
                      const SizedBox(width: 4),
                      // 性别图标
                      Icon(
                        fan["gender"] == "female" ? Icons.female : Icons.male,
                        size: 16,
                        color: fan["gender"] == "female" ? Colors.pink : Colors.blue,
                      ),
                    ],
                  ),
                  const SizedBox(height: 4),
                  Text(
                    "${fan["age"]}岁·${fan["location"]}",
                    style: const TextStyle(
                      color: Colors.grey,
                      fontSize: 12,
                    ),
                  ),
                ],
              ),
            ),
          ),
          
          // 关注按钮
          Container(
            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
            decoration: BoxDecoration(
              color: _primaryPurple,
              borderRadius: BorderRadius.circular(16),
            ),
            child: const Text(
              "关注",
              style: TextStyle(
                fontSize: 12,
                color: Colors.white,
              ),
            ),
          ),
        ],
      ),
    );
  }
}