import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import '../../../core/router/routes.dart';
import '../../providers/user_providers.dart';
import '../../providers/profile_providers.dart';
import '../../widgets/shimmer_loading.dart';

class ProfilePage extends ConsumerWidget {
  const ProfilePage({super.key});

  // 设计色彩
  static const Color _orange = Color(0xFFFF6B00);
  static const Color _green = Color(0xFF10B981);
  static const Color _darkText = Color(0xFF1F2937);
  static const Color _grayText = Color(0xFF6B7280);
  static const Color _lightGray = Color(0xFF9CA3AF);
  static const Color _bgGray = Color(0xFFF3F4F6);
  static const Color _red = Color(0xFFEF4444);

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final user = ref.watch(userNotifierProvider);
    final statsAsync = ref.watch(userStatsProvider);
    final invitationCode = ref.watch(invitationCodeProvider);

    final isStatsLoading = statsAsync.isLoading;
    final stats = statsAsync.valueOrNull;

    return Scaffold(
      backgroundColor: _bgGray,
      body: SafeArea(
        bottom: false,
        child: RefreshIndicator(
          onRefresh: () async {
            ref.invalidate(userStatsProvider);
            await ref.read(userNotifierProvider.notifier).fetchProfile();
          },
          child: SingleChildScrollView(
            physics: const AlwaysScrollableScrollPhysics(),
            child: Column(
              children: [
                // 用户头部信息
                _buildUserHeader(context, user),

                const SizedBox(height: 16),

                // 统计数据行
                _buildStatsRow(stats, isStatsLoading),

                const SizedBox(height: 16),

                // 邀请码卡片
                _buildInvitationCard(context, invitationCode),

                const SizedBox(height: 16),

                // 账户设置
                _buildAccountSettings(context, user),

                const SizedBox(height: 16),

                // 记录入口
                _buildRecordsSection(context),

                const SizedBox(height: 16),

                // 团队与收益
                _buildTeamEarningsSection(context),

                const SizedBox(height: 16),

                // 其他设置
                _buildOtherSettings(context),

                const SizedBox(height: 24),

                // 退出登录
                _buildLogoutButton(context, ref),

                const SizedBox(height: 16),

                // 版本信息
                const Text(
                  'Version 1.0.0',
                  style: TextStyle(
                    fontSize: 12,
                    color: _lightGray,
                  ),
                ),

                const SizedBox(height: 100),
              ],
            ),
          ),
        ),
      ),
    );
  }

  Widget _buildUserHeader(BuildContext context, UserState user) {
    return Container(
      padding: const EdgeInsets.all(20),
      color: Colors.white,
      child: Row(
        children: [
          // 头像
          Container(
            width: 80,
            height: 80,
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              gradient: LinearGradient(
                colors: [_orange.withValues(alpha: 0.8), _orange],
                begin: Alignment.topLeft,
                end: Alignment.bottomRight,
              ),
            ),
            child: Center(
              child: Text(
                user.nickname?.isNotEmpty == true
                    ? user.nickname!.substring(0, 1).toUpperCase()
                    : (user.realName?.isNotEmpty == true
                        ? user.realName!.substring(0, 1).toUpperCase()
                        : 'U'),
                style: const TextStyle(
                  fontSize: 36,
                  fontWeight: FontWeight.bold,
                  color: Colors.white,
                ),
              ),
            ),
          ),

          const SizedBox(width: 16),

          // 用户信息
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(
                  children: [
                    Text(
                      user.realName ?? user.nickname ?? '榴莲用户',
                      style: const TextStyle(
                        fontSize: 20,
                        fontWeight: FontWeight.bold,
                        color: _darkText,
                      ),
                    ),
                    const SizedBox(width: 8),
                    // 实名认证徽章
                    if (user.isKycVerified)
                      Container(
                        padding: const EdgeInsets.symmetric(
                          horizontal: 8,
                          vertical: 2,
                        ),
                        decoration: BoxDecoration(
                          color: _green.withValues(alpha: 0.1),
                          borderRadius: BorderRadius.circular(10),
                        ),
                        child: const Row(
                          mainAxisSize: MainAxisSize.min,
                          children: [
                            Icon(Icons.verified, size: 12, color: _green),
                            SizedBox(width: 2),
                            Text(
                              '已实名',
                              style: TextStyle(
                                fontSize: 10,
                                fontWeight: FontWeight.w500,
                                color: _green,
                              ),
                            ),
                          ],
                        ),
                      ),
                  ],
                ),
                const SizedBox(height: 8),
                Row(
                  children: [
                    Text(
                      'ID: ${user.accountSequence ?? '--------'}',
                      style: const TextStyle(
                        fontSize: 14,
                        color: _grayText,
                      ),
                    ),
                    const SizedBox(width: 8),
                    GestureDetector(
                      onTap: () {
                        if (user.accountSequence != null) {
                          Clipboard.setData(
                            ClipboardData(text: user.accountSequence!),
                          );
                          ScaffoldMessenger.of(context).showSnackBar(
                            const SnackBar(
                              content: Text('ID已复制'),
                              duration: Duration(seconds: 1),
                            ),
                          );
                        }
                      },
                      child: const Icon(
                        Icons.copy,
                        size: 16,
                        color: _grayText,
                      ),
                    ),
                  ],
                ),
                // 手机号
                if (user.phone != null)
                  Padding(
                    padding: const EdgeInsets.only(top: 4),
                    child: Text(
                      '手机: ${user.phone}',
                      style: const TextStyle(
                        fontSize: 12,
                        color: _lightGray,
                      ),
                    ),
                  ),
              ],
            ),
          ),

          // 编辑按钮
          IconButton(
            onPressed: () {
              // TODO: 编辑个人资料
            },
            icon: const Icon(
              Icons.edit_outlined,
              color: _grayText,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildStatsRow(UserStats? stats, bool isLoading) {
    return Container(
      padding: const EdgeInsets.symmetric(vertical: 16),
      color: Colors.white,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: [
          _buildStatItem(
            '认种状态',
            stats?.hasAdopted == true ? '已认种' : '未认种',
            isLoading,
          ),
          _buildDivider(),
          _buildStatItem(
            '直推人数',
            stats?.directReferralAdoptedCount.toString() ?? '0',
            isLoading,
          ),
          _buildDivider(),
          _buildStatItem(
            '团队层级',
            stats?.unlockedLevelDepth.toString() ?? '0',
            isLoading,
          ),
          _buildDivider(),
          _buildStatItem(
            'VIP等级',
            stats?.vipLevel ?? '-',
            isLoading,
          ),
        ],
      ),
    );
  }

  Widget _buildStatItem(String label, String value, bool isLoading) {
    return Column(
      children: [
        DataText(
          data: isLoading ? null : value,
          isLoading: isLoading,
          placeholder: '--',
          style: const TextStyle(
            fontSize: 20,
            fontWeight: FontWeight.bold,
            color: _darkText,
          ),
        ),
        const SizedBox(height: 4),
        Text(
          label,
          style: const TextStyle(
            fontSize: 12,
            color: _grayText,
          ),
        ),
      ],
    );
  }

  Widget _buildDivider() {
    return Container(
      width: 1,
      height: 30,
      color: _bgGray,
    );
  }

  Widget _buildInvitationCard(BuildContext context, String invitationCode) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16),
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Text(
            '我的邀请码',
            style: TextStyle(
              fontSize: 14,
              color: _grayText,
            ),
          ),
          const SizedBox(height: 12),
          Row(
            children: [
              Expanded(
                child: Container(
                  padding: const EdgeInsets.symmetric(
                    horizontal: 16,
                    vertical: 12,
                  ),
                  decoration: BoxDecoration(
                    color: _bgGray,
                    borderRadius: BorderRadius.circular(8),
                  ),
                  child: Text(
                    invitationCode,
                    style: const TextStyle(
                      fontSize: 18,
                      fontWeight: FontWeight.bold,
                      color: _darkText,
                      letterSpacing: 2,
                    ),
                  ),
                ),
              ),
              const SizedBox(width: 12),
              _buildActionButton(
                icon: Icons.copy,
                label: '复制',
                onTap: () {
                  Clipboard.setData(ClipboardData(text: invitationCode));
                  ScaffoldMessenger.of(context).showSnackBar(
                    const SnackBar(
                      content: Text('邀请码已复制'),
                      duration: Duration(seconds: 1),
                    ),
                  );
                },
              ),
              const SizedBox(width: 8),
              _buildActionButton(
                icon: Icons.share,
                label: '分享',
                onTap: () {
                  // TODO: 分享功能
                },
              ),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildActionButton({
    required IconData icon,
    required String label,
    required VoidCallback onTap,
  }) {
    return GestureDetector(
      onTap: onTap,
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
        decoration: BoxDecoration(
          color: _orange,
          borderRadius: BorderRadius.circular(8),
        ),
        child: Row(
          children: [
            Icon(icon, size: 16, color: Colors.white),
            const SizedBox(width: 4),
            Text(
              label,
              style: const TextStyle(
                fontSize: 12,
                color: Colors.white,
                fontWeight: FontWeight.w500,
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildAccountSettings(BuildContext context, UserState user) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Padding(
            padding: EdgeInsets.fromLTRB(16, 16, 16, 8),
            child: Text(
              '账户设置',
              style: TextStyle(
                fontSize: 16,
                fontWeight: FontWeight.bold,
                color: _darkText,
              ),
            ),
          ),
          _buildSettingItem(
            icon: Icons.security,
            label: '账户安全',
            onTap: () => context.push(Routes.changePassword),
          ),
          _buildSettingItem(
            icon: Icons.verified_user,
            label: '实名认证',
            trailing: Text(
              user.isKycVerified ? '已认证' : '未认证',
              style: TextStyle(
                fontSize: 14,
                color: user.isKycVerified ? _green : _lightGray,
              ),
            ),
            onTap: () {},
          ),
          _buildSettingItem(
            icon: Icons.lock_outline,
            label: '支付密码',
            trailing: const Text(
              '已设置',
              style: TextStyle(
                fontSize: 14,
                color: _green,
              ),
            ),
            onTap: () {},
            showDivider: false,
          ),
        ],
      ),
    );
  }

  Widget _buildSettingItem({
    required IconData icon,
    required String label,
    Widget? trailing,
    required VoidCallback onTap,
    bool showDivider = true,
  }) {
    return Column(
      children: [
        ListTile(
          leading: Icon(icon, color: _grayText, size: 22),
          title: Text(
            label,
            style: const TextStyle(
              fontSize: 14,
              color: _darkText,
            ),
          ),
          trailing: Row(
            mainAxisSize: MainAxisSize.min,
            children: [
              if (trailing != null) trailing,
              if (trailing != null) const SizedBox(width: 8),
              const Icon(Icons.chevron_right, color: _lightGray, size: 20),
            ],
          ),
          onTap: onTap,
        ),
        if (showDivider)
          const Divider(height: 1, indent: 56, endIndent: 16),
      ],
    );
  }

  Widget _buildRecordsSection(BuildContext context) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16),
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Text(
            '我的记录',
            style: TextStyle(
              fontSize: 16,
              fontWeight: FontWeight.bold,
              color: _darkText,
            ),
          ),
          const SizedBox(height: 16),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: [
              _buildRecordIcon(
                icon: Icons.eco,
                label: '认种记录',
                onTap: () {},
              ),
              _buildRecordIcon(
                icon: Icons.assignment,
                label: '分配记录',
                onTap: () {},
              ),
              _buildRecordIcon(
                icon: Icons.receipt_long,
                label: '交易记录',
                onTap: () {},
              ),
              _buildRecordIcon(
                icon: Icons.account_balance_wallet,
                label: '提现记录',
                onTap: () {},
              ),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildRecordIcon({
    required IconData icon,
    required String label,
    required VoidCallback onTap,
  }) {
    return GestureDetector(
      onTap: onTap,
      behavior: HitTestBehavior.opaque,
      child: Column(
        children: [
          Container(
            width: 48,
            height: 48,
            decoration: BoxDecoration(
              color: _orange.withValues(alpha: 0.1),
              borderRadius: BorderRadius.circular(12),
            ),
            child: Icon(icon, color: _orange, size: 24),
          ),
          const SizedBox(height: 8),
          Text(
            label,
            style: const TextStyle(
              fontSize: 12,
              color: _grayText,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildTeamEarningsSection(BuildContext context) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Padding(
            padding: EdgeInsets.fromLTRB(16, 16, 16, 8),
            child: Text(
              '团队与收益',
              style: TextStyle(
                fontSize: 16,
                fontWeight: FontWeight.bold,
                color: _darkText,
              ),
            ),
          ),
          _buildSettingItem(
            icon: Icons.people,
            label: '我的团队',
            onTap: () {},
          ),
          _buildSettingItem(
            icon: Icons.trending_up,
            label: '收益明细',
            onTap: () {},
          ),
          _buildSettingItem(
            icon: Icons.card_giftcard,
            label: '推广奖励',
            onTap: () {},
            showDivider: false,
          ),
        ],
      ),
    );
  }

  Widget _buildOtherSettings(BuildContext context) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Padding(
            padding: EdgeInsets.fromLTRB(16, 16, 16, 8),
            child: Text(
              '其他设置',
              style: TextStyle(
                fontSize: 16,
                fontWeight: FontWeight.bold,
                color: _darkText,
              ),
            ),
          ),
          _buildSwitchItem(
            icon: Icons.notifications_outlined,
            label: '消息通知',
            value: true,
            onChanged: (value) {},
          ),
          _buildSwitchItem(
            icon: Icons.dark_mode_outlined,
            label: '深色模式',
            value: false,
            onChanged: (value) {},
          ),
          _buildSettingItem(
            icon: Icons.help_outline,
            label: '帮助中心',
            onTap: () {},
          ),
          _buildSettingItem(
            icon: Icons.info_outline,
            label: '关于我们',
            onTap: () {},
            showDivider: false,
          ),
        ],
      ),
    );
  }

  Widget _buildSwitchItem({
    required IconData icon,
    required String label,
    required bool value,
    required ValueChanged<bool> onChanged,
  }) {
    return Column(
      children: [
        ListTile(
          leading: Icon(icon, color: _grayText, size: 22),
          title: Text(
            label,
            style: const TextStyle(
              fontSize: 14,
              color: _darkText,
            ),
          ),
          trailing: Switch(
            value: value,
            onChanged: onChanged,
            activeTrackColor: _orange,
            activeThumbColor: Colors.white,
          ),
        ),
        const Divider(height: 1, indent: 56, endIndent: 16),
      ],
    );
  }

  Widget _buildLogoutButton(BuildContext context, WidgetRef ref) {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 16),
      child: SizedBox(
        width: double.infinity,
        child: TextButton(
          onPressed: () {
            showDialog(
              context: context,
              builder: (context) => AlertDialog(
                title: const Text('退出登录'),
                content: const Text('确定要退出登录吗？'),
                actions: [
                  TextButton(
                    onPressed: () => Navigator.pop(context),
                    child: const Text('取消'),
                  ),
                  TextButton(
                    onPressed: () {
                      Navigator.pop(context);
                      ref.read(userNotifierProvider.notifier).logout();
                    },
                    child: const Text(
                      '确定',
                      style: TextStyle(color: _red),
                    ),
                  ),
                ],
              ),
            );
          },
          style: TextButton.styleFrom(
            backgroundColor: Colors.white,
            padding: const EdgeInsets.symmetric(vertical: 14),
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(12),
            ),
          ),
          child: const Text(
            '退出登录',
            style: TextStyle(
              fontSize: 16,
              color: _red,
              fontWeight: FontWeight.w500,
            ),
          ),
        ),
      ),
    );
  }
}