import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_markdown/flutter_markdown.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../../core/app_colors.dart';
import '../../../core/app_theme.dart';
import '../../../core/navigation_provider.dart';
import '../../../providers/auth_provider.dart';
import '../../../providers/chat_provider.dart';
import '../../../providers/data_providers.dart';

/// 卡片入场动画包装（从下往上滑入 + 淡入）
class _AnimatedCardEntry extends StatefulWidget {
  final Widget child;
  const _AnimatedCardEntry({required this.child});

  @override State<_AnimatedCardEntry> createState() => _AnimatedCardEntryState();
}

class _AnimatedCardEntryState extends State<_AnimatedCardEntry> with SingleTickerProviderStateMixin {
  late final _ctrl = AnimationController(vsync: this, duration: const Duration(milliseconds: 600));
  late final _slide = Tween<Offset>(begin: const Offset(0, 0.12), end: Offset.zero).animate(CurvedAnimation(parent: _ctrl, curve: Curves.easeOutCubic));
  late final _fade = Tween<double>(begin: 0.0, end: 1.0).animate(CurvedAnimation(parent: _ctrl, curve: Curves.easeOut));

  @override void initState() { super.initState(); _ctrl.forward(); }
  @override void dispose() { _ctrl.dispose(); super.dispose(); }

  @override
  Widget build(BuildContext context) {
    return FadeTransition(opacity: _fade, child: SlideTransition(position: _slide, child: widget.child));
  }
}

/// 对话消息列表
class ChatMessagesView extends ConsumerWidget {
  final ScrollController scrollCtrl;
  final List<ChatMessage> messages;

  const ChatMessagesView({super.key, required this.scrollCtrl, required this.messages});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final chatState = ref.watch(chatProvider);

    if (messages.isEmpty) {
      return Center(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Container(
              width: 80,
              height: 80,
              decoration: BoxDecoration(
                color: AppTheme.primaryLight,
                borderRadius: BorderRadius.circular(40),
              ),
              child: const Icon(Icons.health_and_safety, size: 40, color: AppTheme.primary),
            ),
            const SizedBox(height: 16),
            Text('开始和 AI 健康管家对话吧', style: Theme.of(context).textTheme.bodyMedium),
            const SizedBox(height: 8),
            const Text('记录健康数据，获取专业建议', style: TextStyle(fontSize: 17, color: AppColors.textHint)),
          ],
        ),
      );
    }

    return ListView.builder(
      controller: scrollCtrl,
      reverse: false,
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
      itemCount: messages.length,
      itemBuilder: (context, index) {
        final msg = messages[index];
        return _buildMessageContent(context, ref, msg, chatState);
      },
    );
  }

  // ─── 消息分发 ─────────────────────────────────────────────

  Widget _buildMessageContent(BuildContext context, WidgetRef ref, ChatMessage msg, ChatState chatState) {
    switch (msg.type) {
      case MessageType.agentWelcome:
        final storedAgent = _parseAgentFromName(msg.metadata?['agent'] as String?);
        return _buildAgentWelcomeCard(context, ref, msg, storedAgent);
      case MessageType.taskCard:
        return _buildTaskCardInChat(context, ref);
      case MessageType.dataConfirm:
        return _buildDataConfirmCard(context, ref, msg);
      default:
        if (!msg.isUser && chatState.isStreaming && msg.content.length < 5) {
          return _buildThinkingBubble(context, chatState.thinkingText);
        }
        return _buildTextBubble(context, msg, chatState);
    }
  }

  // ═══════════════════════════════════════════════════════════
  // 1. AgentWelcomeCard — 智能体欢迎卡片（蚂蚁阿福风格 + 美化版）
  // ═══════════════════════════════════════════════════════════

  Widget _buildAgentWelcomeCard(BuildContext context, WidgetRef ref, ChatMessage msg, ActiveAgent agent) {
    final info = _agentInfo(agent);
    final actions = agent.actions;
    final features = _getAgentFeatures(agent);
    final screenWidth = MediaQuery.of(context).size.width;
    final agentColors = _agentColors(agent);
    final iconGradient = LinearGradient(
      colors: agentColors.gradient,
      begin: Alignment.topLeft,
      end: Alignment.bottomRight,
    );

    return _AnimatedCardEntry(child: Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 16),
        constraints: BoxConstraints(maxWidth: screenWidth * 0.95),
        decoration: BoxDecoration(
          color: AppColors.cardBackground,
          borderRadius: BorderRadius.circular(28),
          border: Border.all(color: Color(0xFFE2E8F0), width: 2),
          boxShadow: AppColors.cardShadow,
        ),
        clipBehavior: Clip.antiAlias,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // ── 标题区域 ──
            Container(
              width: double.infinity,
              padding: const EdgeInsets.fromLTRB(20, 22, 20, 20),
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  colors: [
                    agentColors.border,
                    agentColors.bg,
                  ],
                  begin: Alignment.topLeft,
                  end: Alignment.bottomRight,
                ),
              ),
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  // 大图标容器
                  Container(
                    width: 64,
                    height: 64,
                    decoration: BoxDecoration(
                      gradient: iconGradient,
                      borderRadius: BorderRadius.circular(20),
                      boxShadow: [
                        BoxShadow(
                          color: agentColors.accent.withAlpha(77),
                          blurRadius: 14,
                          offset: const Offset(0, 5),
                        ),
                      ],
                    ),
                    child: Icon(info.$1, size: 32, color: Colors.white),
                  ),
                  const SizedBox(width: 18),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        // AI 助手标签
                        Container(
                          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
                          decoration: BoxDecoration(
                            color: Colors.white.withAlpha(160),
                            borderRadius: BorderRadius.circular(10),
                            boxShadow: AppColors.cardShadowLight,
                          ),
                          child: Row(mainAxisSize: MainAxisSize.min, children: [
                            Icon(Icons.auto_awesome, size: 14, color: agentColors.accent),
                            const SizedBox(width: 4),
                            Text('AI 智能助手', style: TextStyle(fontSize: 13, fontWeight: FontWeight.w600, color: agentColors.accent)),
                          ]),
                        ),
                        const SizedBox(height: 10),
                        Text(info.$2, style: const TextStyle(fontSize: 24, fontWeight: FontWeight.w800, color: AppColors.textPrimary, letterSpacing: -0.3)),
                        const SizedBox(height: 8),
                        Text(info.$3, style: const TextStyle(fontSize: 16, color: AppColors.textSecondary, height: 1.4)),
                      ],
                    ),
                  ),
                ],
              ),
            ),

            // ── 功能特性区 ──
            if (features.isNotEmpty) ...[
              Padding(
                padding: const EdgeInsets.fromLTRB(16, 14, 16, 0),
                child: features.any((f) => f.imageAsset != null)
                    ? Container(
                        decoration: BoxDecoration(
                          gradient: iconGradient,
                          borderRadius: BorderRadius.circular(20),
                        ),
                        padding: const EdgeInsets.all(2),
                        child: ClipRRect(
                          borderRadius: BorderRadius.circular(18),
                          child: Image.asset(
                            features.firstWhere((f) => f.imageAsset != null).imageAsset!,
                            width: double.infinity, height: 170, fit: BoxFit.fill,
                          ),
                        ),
                      )
                    : Container(
                        padding: const EdgeInsets.all(14),
                        decoration: BoxDecoration(color: AppColors.cardInner, borderRadius: BorderRadius.circular(20), border: Border.all(color: AppColors.border)),
                        child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
                          Row(children: [
                            Container(width: 4, height: 16, decoration: BoxDecoration(color: agentColors.accent, borderRadius: BorderRadius.circular(2))),
                            const SizedBox(width: 8),
                            const Text('核心功能', style: TextStyle(fontSize: 14, fontWeight: FontWeight.w600, color: AppColors.textSecondary)),
                          ]),
                          const SizedBox(height: 10),
                          Row(children: features.map((feature) {
                            return Expanded(
                              child: Container(
                                margin: EdgeInsets.symmetric(horizontal: 3),
                                padding: const EdgeInsets.symmetric(vertical: 12, horizontal: 6),
                                decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(12)),
                                child: Column(children: [
                                  Container(width: 40, height: 40, decoration: BoxDecoration(color: agentColors.iconBg, borderRadius: BorderRadius.circular(10)),
                                    child: Icon(feature.icon, size: 20, color: agentColors.accent)),
                                  const SizedBox(height: 6),
                                  Text(feature.title, style: const TextStyle(fontSize: 13, fontWeight: FontWeight.w600, color: AppColors.textPrimary)),
                                  Text(feature.desc, style: const TextStyle(fontSize: 11, color: AppColors.textHint)),
                                ]),
                              ),
                            );
                          }).toList()),
                        ]),
                      ),
              ),
            ],

            // ── 医生选择区（问诊专用）──
            if (agent == ActiveAgent.consultation) ...[
              const SizedBox(height: 14),
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 20),
                child: _buildDoctorCards(ref, agentColors),
              ),
            ],

            // ── 快捷操作按钮区 ──
            if (actions.isNotEmpty) ...[
              const SizedBox(height: 14),
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 20),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Row(children: [
                      Container(
                        width: 6, height: 18,
                        decoration: BoxDecoration(
                          gradient: iconGradient,
                          borderRadius: BorderRadius.circular(3),
                        ),
                      ),
                      const SizedBox(width: 8),
                      Text('快捷操作', style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w700, color: AppColors.textPrimary)),
                    ]),
                    const SizedBox(height: 12),
                    Row(
                      children: [
                        for (int i = 0; i < actions.length; i++) ...[
                          if (i > 0) const SizedBox(width: 10),
                          Expanded(child: _buildActionButton(actions[i], context, ref, agentColors)),
                        ],
                      ],
                    ),
                  ],
                ),
              ),
            ],

            // ── 底部提示 ──
            const SizedBox(height: 16),
            Padding(
              padding: const EdgeInsets.fromLTRB(20, 0, 20, 20),
              child: Container(
                padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
                decoration: BoxDecoration(
                  color: agentColors.iconBg,
                  borderRadius: BorderRadius.circular(12),
                ),
                child: Row(children: [
                  Icon(Icons.lightbulb_outline, size: 18, color: agentColors.accent),
                  const SizedBox(width: 8),
                  Expanded(child: Text(_agentTip(agent), style: TextStyle(fontSize: 15, color: AppColors.textPrimary.withAlpha(180), fontWeight: FontWeight.w500))),
                ]),
              ),
            ),
          ],
        ),
      ),
    ),
    );
  }

  Widget _buildActionButton(_AgentAction a, BuildContext context, WidgetRef ref, _AgentColors colors) {
    return InkWell(
      onTap: () {
        if (a.label == '服药打卡') {
          pushRoute(ref, 'medCheckIn');
        } else if (a.action == 'pickFoodCamera' || a.action == 'pickFoodGallery') {
          ref.read(dietActionProvider.notifier).trigger(a.action!);
        } else if (a.route != null) {
          if (a.route == 'camera' || a.route == 'gallery') {
            ref.read(cameraActionProvider.notifier).trigger(a.route!);
          } else {
            pushRoute(ref, a.route!);
          }
        }
      },
      borderRadius: BorderRadius.circular(20),
      child: Container(
        padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 12),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(20),
          border: Border.all(color: AppColors.borderLight, width: 1.5),
          boxShadow: AppColors.cardShadow,
        ),
        child: Row(
          children: [
            Container(
              width: 40, height: 40,
              decoration: BoxDecoration(
                color: colors.iconBg,
                borderRadius: BorderRadius.circular(12),
              ),
              child: Icon(a.icon, size: 22, color: colors.accent),
            ),
            const SizedBox(width: 12),
            Expanded(child: Text(a.label, style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: AppColors.textPrimary))),
            Icon(Icons.chevron_right, size: 18, color: AppColors.border),
          ],
        ),
      ),
    );
  }

  List<_AgentFeature> _getAgentFeatures(ActiveAgent agent) {
    return switch (agent) {
      ActiveAgent.health => [
          _AgentFeature(Icons.trending_up, '趋势分析', '查看历史数据', imageAsset: 'assets/images/Data.png'),
          _AgentFeature(Icons.add, '快速录入', '血压心率血糖'),
        ],
      ActiveAgent.diet => [
          _AgentFeature(Icons.camera_alt, '拍照识别', '自动识别食物', imageAsset: 'assets/images/diet.png'),
          _AgentFeature(Icons.bar_chart, '营养分析', '热量营养成分'),
        ],
      ActiveAgent.medication => [
          _AgentFeature(Icons.list, '用药清单', '管理所有药品', imageAsset: 'assets/images/Medicine.png'),
          _AgentFeature(Icons.alarm, '智能提醒', '按时服药提醒'),
        ],
      ActiveAgent.consultation => [
          _AgentFeature(Icons.message, '在线问诊', '专业医生解答'),
          _AgentFeature(Icons.local_hospital, '科室选择', '精准匹配'),
        ],
      ActiveAgent.report => [
          _AgentFeature(Icons.upload, '上传报告', '支持多种格式', imageAsset: 'assets/images/Report Analysis.png'),
          _AgentFeature(Icons.search, 'AI解读', '智能分析报告'),
        ],
      ActiveAgent.exercise => [
          _AgentFeature(Icons.calendar_month, '运动计划', '科学规划', imageAsset: 'assets/images/sport.png'),
          _AgentFeature(Icons.check_circle, '打卡记录', '坚持完成'),
        ],
      _ => [
          _AgentFeature(Icons.health_and_safety, '健康管理', '全方位呵护'),
          _AgentFeature(Icons.chat, '智能咨询', '随时答疑'),
        ],
    };
  }



  Widget _buildDoctorCards(WidgetRef ref, _AgentColors colors) {
    const doctors = [
      {'name': '张明', 'title': '主任医师', 'dept': '心脏康复科', 'desc': '冠心病、高血压术后管理', 'id': '468b82e2-d95a-4436-bff6-a50eecf99a66'},
      {'name': '李芳', 'title': '副主任医师', 'dept': '营养科', 'desc': '糖尿病、甲状腺疾病管理', 'id': 'd4148733-b538-4398-af17-0c7592fc0c2d'},
      {'name': '王建国', 'title': '主任医师', 'dept': '心血管内科', 'desc': '术后营养指导、饮食方案制定', 'id': 'ef0953c9-eb63-4d03-b6d7-050a1897d4a3'},
    ];
    return Row(
      children: [
        for (var i = 0; i < doctors.length; i++) ...[
          if (i > 0) const SizedBox(width: 8),
          Expanded(child: _doctorCard(doctors[i], ref, colors)),
        ],
      ],
    );
  }

  Widget _doctorCard(Map<String, String> doc, WidgetRef ref, _AgentColors colors) {
    return InkWell(
      onTap: () => pushRoute(ref, 'consultation', params: {'id': doc['id']!}),
      borderRadius: BorderRadius.circular(12),
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 10),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(12),
          border: Border.all(color: colors.border),
        ),
        child: Column(mainAxisSize: MainAxisSize.min, children: [
          CircleAvatar(
            radius: 22,
            backgroundColor: colors.iconBg,
            child: Text(doc['name']![0], style: TextStyle(fontSize: 21, fontWeight: FontWeight.w600, color: colors.accent)),
          ),
          const SizedBox(height: 6),
          Text(doc['name']!, style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: AppColors.textPrimary)),
          Text(doc['title']!, style: const TextStyle(fontSize: 14, color: AppColors.textHint)),
          const SizedBox(height: 2),
          Container(
            padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
            decoration: BoxDecoration(
              color: colors.iconBg,
              borderRadius: BorderRadius.circular(4),
            ),
            child: Text(doc['dept']!, style: TextStyle(fontSize: 13, color: colors.accent)),
          ),
          const SizedBox(height: 4),
          Text(
            doc['desc']!,
            style: const TextStyle(fontSize: 13, color: AppColors.textSecondary, height: 1.3),
            maxLines: 2,
            overflow: TextOverflow.ellipsis,
            textAlign: TextAlign.center,
          ),
        ]),
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 2. DataConfirmCard — 统一确认卡片（紫白蓝风格）
  // ═══════════════════════════════════════════════════════════

  Widget _buildDataConfirmCard(BuildContext context, WidgetRef ref, ChatMessage msg) {
    final meta = msg.metadata ?? <String, dynamic>{};
    final backendType = meta['type'] as String? ?? '';
    final screenWidth = MediaQuery.of(context).size.width;

    // 识别是哪种数据类型
    final isMedication = backendType == 'medication' || (meta['name'] != null && meta['name'].toString().isNotEmpty && backendType != 'exercise');
    final isExercise = backendType == 'exercise';
    final isHealth = !isMedication && !isExercise;

    // 根据类型获取显示字段
    String title = '数据确认';
    IconData titleIcon = Icons.assignment;
    String mainLabel = '';
    String mainValue = '';
    String mainUnit = '';
    bool abnormal = meta['abnormal'] as bool? ?? false;
    String recordTime = meta['recordTime'] as String? ?? '';

    List<_ConfirmField> fields = [];

    if (isMedication) {
      // 药品录入 — 主展示区已显示药名+剂量，详情只列额外信息
      title = '药品录入确认';
      titleIcon = Icons.medication_liquid_outlined;
      mainLabel = meta['name'] as String? ?? '';
      mainValue = meta['dosage'] as String? ?? '';
      mainUnit = '';

      if (recordTime.isEmpty) recordTime = _formatTime(msg.createdAt);
      final time = meta['time'] as String? ?? '';
      if (time.isNotEmpty) {
        final timeValue = meta['服药时间'] as String? ?? time;
        fields.add(_ConfirmField(label: '服药时间', value: timeValue, editable: true));
      }
      final frequency = meta['frequency'] as String? ?? '';
      if (frequency.isNotEmpty) {
        final freqValue = meta['频率'] as String? ?? _freqLabel(frequency);
        fields.add(_ConfirmField(label: '频率', value: freqValue, editable: true));
      }
      final duration = meta['duration_days'] as int?;
      if (duration != null && duration > 0) {
        final durationValue = meta['服用天数'] as String? ?? '$duration 天';
        fields.add(_ConfirmField(label: '服用天数', value: durationValue, editable: true));
      }
    } else if (isExercise) {
      // 运动计划 — 主展示区大号显示运动名，字段列时长/频率/天数
      title = '运动计划确认';
      titleIcon = Icons.directions_run_outlined;
      final exName = (meta['value'] ?? meta['name'] ?? meta['exerciseType'] ?? meta['运动类型'] ?? '').toString();
      final exUnitRaw = (meta['unit'] ?? meta['duration_unit'] ?? meta['durationUnit'] ?? '').toString();
      final exDaysRaw = meta['durationDays'] ?? meta['day_count'];
      final exDays = int.tryParse(exDaysRaw?.toString() ?? '') ?? 0;

      // 解析 "每天30分钟" → 频率=每天, 时长=30分钟
      final freqMatch = RegExp(r'^(每天|每周|每月)').firstMatch(exUnitRaw);
      final durMatch = RegExp(r'(\d+分钟)').firstMatch(exUnitRaw);
      final freq = freqMatch?.group(1) ?? '';
      final dur = durMatch?.group(1) ?? exUnitRaw;

      mainLabel = '运动计划';
      mainValue = exName.isNotEmpty ? exName : '运动计划';
      mainUnit = '';

      if (recordTime.isEmpty) recordTime = _formatTime(msg.createdAt);
      if (dur.isNotEmpty) {
        fields.add(_ConfirmField(label: '运动时长', value: dur, editable: true));
      }
      if (freq.isNotEmpty) {
        fields.add(_ConfirmField(label: '频率', value: freq));
      }
      if (exDays > 0) {
        fields.add(_ConfirmField(label: '计划天数', value: '${exDays}天'));
      }
      final intensity = (meta['intensity'] ?? meta['运动强度'] ?? '').toString();
      if (intensity.isNotEmpty) {
        fields.add(_ConfirmField(label: '运动强度', value: intensity, editable: true));
      }
      final calories = (meta['calories'] ?? meta['calorie'] ?? meta['消耗热量'] ?? '').toString();
      if (calories.isNotEmpty) {
        fields.add(_ConfirmField(label: '消耗热量', value: '$calories kcal', editable: true));
      }
    } else {
      // 健康指标 — 主展示区已显示指标+数值+单位，详情只列额外信息
      title = '健康数据确认';
      titleIcon = Icons.monitor_heart_outlined;
      mainLabel = _getMetricName(backendType);
      mainValue = meta['value'] as String? ?? '';
      mainUnit = meta['unit'] as String? ?? _getMetricUnit(backendType);

      if (recordTime.isEmpty) recordTime = _formatTime(msg.createdAt);
      final timeValue = meta['记录时间'] as String? ?? recordTime;
      fields.add(_ConfirmField(label: '记录时间', value: timeValue, editable: true));
      final note = meta['note'] as String? ?? '';
      if (note.isNotEmpty) {
        final noteValue = meta['备注'] as String? ?? note;
        fields.add(_ConfirmField(label: '备注', value: noteValue, editable: true));
      }
    }

    return _AnimatedCardEntry(child: Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 16),
        constraints: BoxConstraints(maxWidth: screenWidth * 0.95),
        decoration: BoxDecoration(
          color: AppColors.cardBackground,
          borderRadius: BorderRadius.circular(28),
          border: Border.all(color: Color(0xFFE2E8F0), width: 2),
          boxShadow: AppColors.cardShadow,
        ),
        clipBehavior: Clip.antiAlias,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // ── 标题区域 ──
            Container(
              width: double.infinity,
              padding: const EdgeInsets.fromLTRB(20, 20, 20, 18),
              decoration: const BoxDecoration(
                color: Color(0xFFF8F6FF),
              ),
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Container(
                    width: 56,
                    height: 56,
                    decoration: BoxDecoration(
                      color: AppColors.cardInner,
                      borderRadius: BorderRadius.circular(16),
                      boxShadow: [
                        BoxShadow(color: AppColors.primaryPurple.withAlpha(35), blurRadius: 10, offset: const Offset(0, 4)),
                      ],
                    ),
                    child: Icon(titleIcon, size: 28, color: Colors.white),
                  ),
                  const SizedBox(width: 14),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(title, style: const TextStyle(fontSize: 22, fontWeight: FontWeight.w700, color: AppColors.textPrimary)),
                        const SizedBox(height: 6),
                        Row(
                          children: [
                            Icon(Icons.access_time, size: 15, color: AppColors.iconColor),
                            const SizedBox(width: 4),
                            Text(recordTime, style: const TextStyle(fontSize: 15, color: AppColors.textSecondary)),
                          ],
                        ),
                      ],
                    ),
                  ),
                ],
              ),
            ),

            // ── 主要数据展示区（大卡片） ──
            Padding(
              padding: const EdgeInsets.fromLTRB(20, 14, 20, 0),
              child: Container(
                width: double.infinity,
                padding: const EdgeInsets.all(20),
                decoration: BoxDecoration(
                  color: AppColors.backgroundSecondary,
                  borderRadius: BorderRadius.circular(18),
                  border: Border.all(color: AppColors.border),
                ),
                child: Row(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Container(
                      width: 68,
                      height: 68,
                      decoration: BoxDecoration(
                        gradient: AppColors.lightGradient,
                        borderRadius: BorderRadius.circular(18),
                      ),
                      child: Center(
                        child: isHealth
                            ? Text(_getMetricIcon(backendType), style: const TextStyle(fontSize: 36))
                            : Icon(
                                isMedication ? Icons.medication_liquid_outlined : Icons.directions_run_outlined,
                                size: 36,
                                color: AppColors.iconColor,
                              ),
                      ),
                    ),
                    const SizedBox(width: 16),
                    Expanded(
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(mainLabel, style: const TextStyle(fontSize: 17, color: AppColors.textSecondary)),
                          if (mainValue.isNotEmpty) ...[
                            const SizedBox(height: 8),
                            RichText(
                              text: TextSpan(
                                children: [
                                  TextSpan(
                                    text: mainValue,
                                    style: TextStyle(
                                      fontSize: 36,
                                      fontWeight: FontWeight.w800,
                                      color: abnormal ? AppColors.error : AppColors.textPrimary,
                                      letterSpacing: -0.5,
                                    ),
                                  ),
                                  if (mainUnit.isNotEmpty)
                                    TextSpan(
                                      text: ' $mainUnit',
                                      style: TextStyle(
                                        fontSize: 19,
                                        color: abnormal ? AppColors.error : AppColors.iconColor,
                                        fontWeight: FontWeight.w500,
                                      ),
                                    ),
                                ],
                              ),
                            ),
                          ],
                        ],
                      ),
                    ),
                  ],
                ),
              ),
            ),

            // ── 异常提示 ──
            if (abnormal) ...[
              const SizedBox(height: 12),
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 20),
                child: Container(
                  width: double.infinity,
                  padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
                  decoration: BoxDecoration(
                    color: AppColors.error.withAlpha(10),
                    borderRadius: BorderRadius.circular(14),
                    border: Border.all(color: AppColors.error.withAlpha(30)),
                  ),
                  child: Row(
                    children: [
                      Container(
                        width: 32, height: 32,
                        decoration: BoxDecoration(color: AppColors.error.withAlpha(15), borderRadius: BorderRadius.circular(10)),
                        child: Icon(Icons.warning_amber_rounded, size: 20, color: AppColors.error),
                      ),
                      const SizedBox(width: 10),
                      Expanded(child: Text('数值偏高，建议关注并咨询医生', style: TextStyle(fontSize: 16, color: AppColors.error, fontWeight: FontWeight.w500))),
                    ],
                  ),
                ),
              ),
            ],

            // ── 详细字段列表（可点击修改） ──
            if (fields.isNotEmpty) ...[
              const SizedBox(height: 12),
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 20),
                child: Container(
                  decoration: BoxDecoration(
                    color: Colors.white,
                    borderRadius: BorderRadius.circular(20),
                    border: Border.all(color: AppColors.border),
                  ),
                  child: Column(
                    children: [
                      for (int i = 0; i < fields.length; i++) ...[
                        if (i > 0) Container(height: 1, color: AppColors.borderLight, margin: const EdgeInsets.symmetric(horizontal: 16)),
                        _buildFieldRow(fields[i], msg, ref),
                      ],
                    ],
                  ),
                ),
              ),
            ],

            // ── 确认按钮（白色底+渐变边框） ──
            const SizedBox(height: 18),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Container(
                width: double.infinity,
                height: 56,
                decoration: BoxDecoration(
                  color: Colors.white,
                  borderRadius: BorderRadius.circular(20),
                  border: Border.all(color: AppColors.borderLight, width: 1.5),
                  boxShadow: AppColors.cardShadow,
                ),
                child: msg.confirmed
                    ? Container(
                        decoration: BoxDecoration(
                          gradient: AppColors.successButtonGradient,
                          borderRadius: BorderRadius.circular(20),
                          boxShadow: AppColors.buttonShadow,
                        ),
                        child: Row(mainAxisAlignment: MainAxisAlignment.center, children: [
                          const Icon(Icons.check_circle_outline, size: 22, color: Colors.white),
                          const SizedBox(width: 8),
                          const Text('录入成功', style: TextStyle(fontSize: 19, fontWeight: FontWeight.w600, color: Colors.white)),
                        ]),
                      )
                    : Material(
                        color: Colors.transparent,
                        child: InkWell(
                          onTap: () {
                            ref.read(chatProvider.notifier).confirmMessage(msg.id);
                          },
                          borderRadius: BorderRadius.circular(20),
                          child: Row(
                            mainAxisAlignment: MainAxisAlignment.center,
                            children: [
                              Container(
                                width: 32, height: 32,
                                decoration: BoxDecoration(
                                  gradient: AppColors.purpleBlueGradient,
                                  borderRadius: BorderRadius.circular(8),
                                ),
                                child: const Icon(Icons.check, size: 18, color: Colors.white),
                              ),
                              const SizedBox(width: 10),
                              Text('确认录入', style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600, color: AppColors.textPrimary)),
                            ],
                          ),
                        ),
                      ),
              ),
            ),
            const SizedBox(height: 20),
          ],
        ),
      ),
    ),
    );
  }

  Widget _buildFieldRow(_ConfirmField field, ChatMessage msg, WidgetRef ref) {
    final isEditing = field.label == msg.metadata?['_editingField'];

    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          SizedBox(
            width: 80,
            child: Text(field.label, style: const TextStyle(fontSize: 15, color: AppColors.textHint)),
          ),
          const SizedBox(width: 12),
          Expanded(
            child: !field.editable
              ? Text(field.value.isNotEmpty ? field.value : '未设置', style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w600, color: AppColors.textPrimary))
              : isEditing
                ? _buildEditableTextField(field, msg, ref)
                : InkWell(
                    onTap: () => ref.read(chatProvider.notifier).startEditingField(msg.id, field.label),
                    child: Row(children: [
                      Expanded(child: Text(field.value.isNotEmpty ? field.value : '未设置', style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w600, color: AppColors.textPrimary))),
                      Icon(Icons.edit_outlined, size: 18, color: AppColors.border),
                    ]),
                  ),
          ),
        ],
      ),
    );
  }

  Widget _buildEditableTextField(_ConfirmField field, ChatMessage msg, WidgetRef ref) {
    return StatefulBuilder(
      builder: (context, setState) {
        final controller = TextEditingController(text: field.value);
        return TextField(
          controller: controller,
          autofocus: true,
          style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w600, color: AppColors.textPrimary),
          decoration: InputDecoration(
            contentPadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
            filled: true,
            fillColor: Colors.white,
            enabledBorder: OutlineInputBorder(
              borderRadius: BorderRadius.circular(8),
              borderSide: BorderSide(color: AppColors.primary.withAlpha(80)),
            ),
            focusedBorder: OutlineInputBorder(
              borderRadius: BorderRadius.circular(8),
              borderSide: const BorderSide(color: AppColors.primary, width: 1.5),
            ),
          ),
            onSubmitted: (value) {
              ref.read(chatProvider.notifier).finishEditingField(msg.id, field.label, value);
            },
            onTapOutside: (_) {
              ref.read(chatProvider.notifier).finishEditingField(msg.id, field.label, controller.text);
            },
          );
      },
    );
  }

  void _editField(_ConfirmField field, ChatMessage msg, WidgetRef ref) {
    // 字段可点击修改的入口，后续可接入 showDialog 实现
  }

  // ═══════════════════════════════════════════════════════════
  // 3. ThinkingBubble — 思考动画
  // ═══════════════════════════════════════════════════════════
  Widget _buildThinkingBubble(BuildContext context, String? thinkingText) {
    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 14),
        decoration: BoxDecoration(
          color: AppColors.cardBackground,
          borderRadius: const BorderRadius.only(topLeft: Radius.circular(4), topRight: Radius.circular(20), bottomLeft: Radius.circular(20), bottomRight: Radius.circular(20)),
          border: Border.all(color: AppColors.border, width: 1.5),
          boxShadow: [BoxShadow(color: AppTheme.primary.withAlpha(12), blurRadius: 10, offset: const Offset(0, 3))],
        ),
        child: Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            Container(
              width: 26,
              height: 26,
              padding: const EdgeInsets.all(5),
              decoration: BoxDecoration(
                color: AppTheme.primaryLight,
                borderRadius: BorderRadius.circular(13),
              ),
              child: const CircularProgressIndicator(strokeWidth: 2.2, color: AppTheme.primary),
            ),
            const SizedBox(width: 10),
            Text(thinkingText?.isNotEmpty == true ? thinkingText! : '正在分析...', style: const TextStyle(fontSize: 17, color: AppColors.textHint)),
          ],
        ),
      ),
    );
  }

  Widget _buildTextBubble(BuildContext context, ChatMessage msg, ChatState? chatState) {
    final isUser = msg.isUser;
    final imageUrl = msg.metadata?['imageUrl'] as String?;
    final localPath = msg.metadata?['localImagePath'] as String?;
    final hasImage = imageUrl != null || localPath != null;

    return Align(
      alignment: isUser ? Alignment.centerRight : Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.82),
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
        decoration: BoxDecoration(
          color: isUser ? Colors.white : AppColors.cardBackground,
          borderRadius: BorderRadius.only(
            topLeft: Radius.circular(isUser ? 20 : 4),
            topRight: Radius.circular(isUser ? 4 : 20),
            bottomLeft: const Radius.circular(20),
            bottomRight: const Radius.circular(20),
          ),
          border: Border.all(color: isUser ? const Color(0xFFE8E4FF) : AppColors.border, width: isUser ? 1 : 1.5),
          boxShadow: isUser ? [] : [BoxShadow(color: AppTheme.primary.withAlpha(12), blurRadius: 10, offset: const Offset(0, 3))],
        ),
        child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              // 文字内容
              if (isUser)
                SelectableText(msg.content, style: const TextStyle(fontSize: 19, color: AppColors.textPrimary, height: 1.5))
              else
                MarkdownBody(
                  data: _cleanAiText(msg.content),
                  selectable: true,
                  styleSheet: MarkdownStyleSheet(
                    p: const TextStyle(fontSize: 19, color: AppColors.textPrimary, height: 1.5),
                    strong: const TextStyle(fontSize: 19, color: AppColors.textPrimary, height: 1.5, fontWeight: FontWeight.w700),
                    h1: const TextStyle(fontSize: 21, color: AppColors.textPrimary, fontWeight: FontWeight.w700),
                    h2: const TextStyle(fontSize: 20, color: AppColors.textPrimary, fontWeight: FontWeight.w700),
                  ),
                ),

              // 图片缩略图（在文字下方）
              if (hasImage)
                Padding(
                  padding: const EdgeInsets.only(top: 8),
                  child: GestureDetector(
                    onTap: () => _showFullImage(context, localPath ?? imageUrl),
                    child: ClipRRect(
                      borderRadius: BorderRadius.circular(8),
                      child: ConstrainedBox(
                        constraints: const BoxConstraints(maxWidth: 160, maxHeight: 120),
                        child: localPath != null
                            ? Image.file(File(localPath), fit: BoxFit.cover)
                            : imageUrl != null
                                ? Image.network(imageUrl, fit: BoxFit.cover, errorBuilder: (_, e, s) => Container(
                                    width: 80, height: 60,
                                    decoration: BoxDecoration(color: AppColors.backgroundSecondary, borderRadius: BorderRadius.circular(8)),
                                    child: const Icon(Icons.image, size: 28, color: AppColors.textHint),
                                  ))
                                : const SizedBox.shrink(),
                      ),
                    ),
                  ),
                ),

              if (!isUser && msg.content.isNotEmpty)
              Padding(
                padding: const EdgeInsets.only(top: 10),
                child: Row(children: [
                  const CircleAvatar(radius: 10, backgroundColor: AppTheme.primaryLight, child: Icon(Icons.chat_bubble_outline, size: 17, color: AppTheme.primary)),
                  const SizedBox(width: 6),
                  const Text('健康管家', style: TextStyle(fontSize: 15, color: AppColors.textHint)),
                  const SizedBox(width: 4),
                  const Text('仅供参考', style: TextStyle(fontSize: 14, color: AppColors.textHint)),
                ]),
              ),
          ],
        ),
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 公共组件：通用按钮
  // ═══════════════════════════════════════════════════════════

  Widget _cardFilledBtn(String label, IconData icon, {VoidCallback? onTap}) {
    return ElevatedButton(
      onPressed: onTap ?? () {},
      style: ElevatedButton.styleFrom(
        backgroundColor: AppTheme.primary,
        foregroundColor: Colors.white,
        elevation: 0,
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
        padding: const EdgeInsets.symmetric(vertical: 11),
      ),
      child: Row(mainAxisAlignment: MainAxisAlignment.center, children: [
        Icon(icon, size: 19),
        const SizedBox(width: 5),
        Text(label, style: const TextStyle(fontSize: 15, fontWeight: FontWeight.w500)),
      ]),
    );
  }

  Widget _cardOutlineBtn(String label, IconData icon, {VoidCallback? onTap}) {
    return OutlinedButton(
      onPressed: onTap ?? () {},
      style: OutlinedButton.styleFrom(
        foregroundColor: AppTheme.primary,
        side: const BorderSide(color: AppTheme.primary, width: 1.2),
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
        padding: const EdgeInsets.symmetric(vertical: 11),
      ),
      child: Row(mainAxisAlignment: MainAxisAlignment.center, children: [
        Icon(icon, size: 18),
        const SizedBox(width: 4),
        Text(label, style: const TextStyle(fontSize: 15, fontWeight: FontWeight.w500)),
      ]),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 工具方法
  // ═══════════════════════════════════════════════════════════

  static void _showFullImage(BuildContext context, String? path) {
    if (path == null) return;
    showDialog(
      context: context,
      builder: (ctx) => Dialog(
        backgroundColor: Colors.black,
        insetPadding: const EdgeInsets.all(24),
        child: Stack(alignment: Alignment.center, children: [
          ClipRRect(borderRadius: BorderRadius.circular(12), child: InteractiveViewer(child: path.startsWith('http')
              ? Image.network(path, fit: BoxFit.contain)
              : Image.file(File(path), fit: BoxFit.contain))),
          Positioned(top: 8, right: 8, child: GestureDetector(
            onTap: () => Navigator.pop(ctx),
            child: Container(padding: const EdgeInsets.all(6), decoration: BoxDecoration(color: Colors.white54, shape: BoxShape.circle), child: const Icon(Icons.close, size: 21)),
          )),
        ]),
      ),
    );
  }

  /// 清理 AI 返回文本中的异常占位符（Markdown 格式交给 MarkdownBody 渲染）
  static String _cleanAiText(String text) {
    return text
        .replaceAll('\$1', '')   // AI 偶尔输出 $1 占位符（正则残留）
        .replaceAll(RegExp(r'\n{3,}'), '\n\n')
        .trim();
  }

  String _freqLabel(String freq) {
    switch (freq.toLowerCase()) {
      case 'daily': return '每天';
      case 'everyotherday': return '隔天';
      case 'weekly': return '每周';
      default: return freq;
    }
  }

  String _formatTime(DateTime dt) {
    final now = DateTime.now();
    final today = DateTime(now.year, now.month, now.day);
    final thatDay = DateTime(dt.year, dt.month, dt.day);
    if (thatDay == today) {
      return '今天 ${dt.hour.toString().padLeft(2, '0')}:${dt.minute.toString().padLeft(2, '0')}';
    }
    if (thatDay == today.subtract(const Duration(days: 1))) {
      return '昨天 ${dt.hour.toString().padLeft(2, '0')}:${dt.minute.toString().padLeft(2, '0')}';
    }
    return '${dt.month}/${dt.day} ${dt.hour.toString().padLeft(2, '0')}:${dt.minute.toString().padLeft(2, '0')}';
  }

  String _getMetricUnit(String type) {
    switch (type.toLowerCase()) {
      case 'blood_pressure': return 'mmHg';
      case 'heart_rate': return 'bpm';
      case 'glucose': return 'mmol/L';
      case 'spo2': return '%';
      case 'weight': return 'kg';
      case 'exercise': return '分钟/天';
      default: return '';
    }
  }

  String _getMetricIcon(String type) {
    switch (type.toLowerCase()) {
      case 'blood_pressure': return '🩺';
      case 'heart_rate': return '💓';
      case 'glucose': return '💉';
      case 'spo2': return '🫁';
      case 'weight': return '⚖️';
      case 'exercise': return '🏃';
      default: return '📊';
    }
  }

  String _getMetricName(String type) {
    switch (type.toLowerCase()) {
      case 'blood_pressure': return '血压';
      case 'heart_rate': return '心率';
      case 'glucose': return '血糖';
      case 'spo2': return '血氧';
      case 'weight': return '体重';
      case 'exercise': return '运动计划';
      default: return '健康指标';
    }
  }

  static void _medicationCheckIn(WidgetRef ref, BuildContext context) async {
    try {
      final api = ref.read(apiClientProvider);
      final reminders = await ref.read(medicationReminderProvider.future);
      if (reminders.isEmpty) {
        if (!context.mounted) return;
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(content: Text('暂无待服药记录'), backgroundColor: AppColors.warning),
        );
        return;
      }
      for (final m in reminders) {
        final id = m['id']?.toString() ?? '';
        final time = m['scheduledTime']?.toString() ?? '';
        if (id.isEmpty) continue;
        await api.post('/api/medications/$id/confirm-dose', data: {'scheduledTime': time, 'status': 'taken'});
      }
      ref.invalidate(medicationReminderProvider);
      if (!context.mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text('打卡成功 已记录 ${reminders.length} 项服药'),
          backgroundColor: AppTheme.success,
        ),
      );
    } catch (e) {
      if (!context.mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('打卡失败：$e'), backgroundColor: Colors.red),
      );
    }
  }


  static _AgentColors _agentColors(ActiveAgent agent) {
    return switch (agent) {
      ActiveAgent.consultation => _AgentColors(
        gradient: [const Color(0xFFC5D5F8), const Color(0xFFA0B8F0), const Color(0xFF7B98E0)],
        bg: const Color(0xFFF0F4FF),
        border: const Color(0xFFD8E0FA),
        iconBg: const Color(0xFFE4ECFC),
        accent: const Color(0xFF7B98E0),
      ),
      ActiveAgent.health => _AgentColors(
        gradient: [const Color(0xFFB8E6CF), const Color(0xFF8ED4AE), const Color(0xFF5FB88D)],
        bg: const Color(0xFFF0FAF4),
        border: const Color(0xFFD0ECD8),
        iconBg: const Color(0xFFE4F8EC),
        accent: const Color(0xFF5FB88D),
      ),
      ActiveAgent.diet => _AgentColors(
        gradient: [const Color(0xFFFFD8B8), const Color(0xFFFFC896), const Color(0xFFF0A060)],
        bg: const Color(0xFFFFF6F0),
        border: const Color(0xFFFFE8D4),
        iconBg: const Color(0xFFFFEEDC),
        accent: const Color(0xFFF0A060),
      ),
      ActiveAgent.medication => _AgentColors(
        gradient: [const Color(0xFFB0CCF8), const Color(0xFF7DA8F0), const Color(0xFF4A80E8)],
        bg: const Color(0xFFEEF2FF),
        border: const Color(0xFFC8D8FA),
        iconBg: const Color(0xFFDEE6FC),
        accent: const Color(0xFF4A80E8),
      ),
      ActiveAgent.report => _AgentColors(
        gradient: [const Color(0xFFD8D0F0), const Color(0xFFC4B8EC), const Color(0xFFA898D8)],
        bg: const Color(0xFFF8F4FF),
        border: const Color(0xFFECE4F8),
        iconBg: const Color(0xFFF0E8FC),
        accent: const Color(0xFFA898D8),
      ),
      ActiveAgent.exercise => _AgentColors(
        gradient: [const Color(0xFFB8E0E0), const Color(0xFF90D0D0), const Color(0xFF68B4B4)],
        bg: const Color(0xFFF0FAFA),
        border: const Color(0xFFD4ECEC),
        iconBg: const Color(0xFFE4F4F4),
        accent: const Color(0xFF68B4B4),
      ),
      _ => _AgentColors(
        gradient: [const Color(0xFFC5D0F8), const Color(0xFFA0B0F0), const Color(0xFF7B90E0)],
        bg: const Color(0xFFF5F5FF),
        border: const Color(0xFFE0E0F8),
        iconBg: const Color(0xFFEDEDFC),
        accent: const Color(0xFF7B90E0),
      ),
    };
  }

  static (_AgentIcon, String, String) _agentInfo(ActiveAgent agent) {
    return switch (agent) {
      ActiveAgent.health => (Icons.favorite_border, '记数据', '录入血压、血糖、心率等日常指标'),
      ActiveAgent.diet => (Icons.restaurant, '拍饮食', '拍照识别食物热量和营养成分'),
      ActiveAgent.medication => (Icons.medication, '药管家', '管理药品、提醒服药、追踪用量'),
      ActiveAgent.consultation => (Icons.local_hospital, '问诊', '在线咨询医生，描述症状获取建议'),
      ActiveAgent.report => (Icons.assignment, '报告分析', '上传体检报告，AI 辅助解读'),
      ActiveAgent.exercise => (Icons.directions_run, '运动', '制定运动计划，打卡记录进度'),
      _ => (Icons.smart_toy, 'AI 助手', '您的智能健康管家'),
    };
  }

  static String _agentTip(ActiveAgent agent) => switch (agent) {
    ActiveAgent.health => '直接说出您的症状或数据，如"血压130/85，心率72"',
    ActiveAgent.diet => '拍照或描述您吃了什么，如"早餐吃了两个鸡蛋一杯牛奶"',
    ActiveAgent.medication => '说出药品名称和用法，如"每天早晚各一片阿司匹林"',
    ActiveAgent.consultation => '描述您的症状和不适感，如"最近总是头晕胸闷"',
    ActiveAgent.report => '上传您的检查报告，AI 将自动提取指标并解读',
    ActiveAgent.exercise => '说出运动计划，如"每天散步30分钟坚持一周"',
    _ => '直接描述您的需求，AI 会自动为您记录和分析',
  };

  static ActiveAgent _parseAgentFromName(String? name) {
    switch (name) {
      case 'consultation': return ActiveAgent.consultation;
      case 'health': return ActiveAgent.health;
      case 'diet': return ActiveAgent.diet;
      case 'medication': return ActiveAgent.medication;
      case 'report': return ActiveAgent.report;
      case 'exercise': return ActiveAgent.exercise;
      default: return ActiveAgent.default_;
    }
  }

  Widget _buildTaskCardInChat(BuildContext context, WidgetRef ref) {
    final health = ref.watch(latestHealthProvider);
    final reminders = ref.watch(medicationReminderProvider);
    return health.when(
      data: (data) => _taskCardBubble(context, ref, data, reminders),
      loading: () => _taskCardBubble(context, ref, {}, const AsyncValue.loading()),
      error: (_, e) => _taskCardBubble(context, ref, {}, const AsyncValue.loading()),
    );
  }

  Widget _taskCardBubble(BuildContext context, WidgetRef ref, Map<String, dynamic> healthData, AsyncValue<List<Map<String, dynamic>>> reminders) {
    final now = DateTime.now();
    final tasks = <Widget>[];

    // ── 解析健康指标 ──
    final bp = healthData['BloodPressure'];
    final bpText = bp is Map ? '${bp['systolic'] ?? '--'}/${bp['diastolic'] ?? '--'}' : null;
    final hr = healthData['HeartRate'];
    final hrText = hr is int ? '$hr' : null;
    final bs = healthData['BloodSugar'];
    final bsText = bs is num ? '$bs' : null;
    final bo = healthData['BloodOxygen'];
    final boText = bo is num ? '$bo' : null;
    final wt = healthData['Weight'];
    final wtText = wt is num ? '$wt' : null;
    final allNull = bpText == null && hrText == null && bsText == null && boText == null && wtText == null;

    // 异常检测
    final bpAbnormal = bp is Map && bp['systolic'] is int && (bp['systolic'] as int) >= 140;
    final hasAbnormal = bpAbnormal;

    // ── 1. 健康指标 ──
    const healthIconColor = Color(0xFF3B82F6);
    const healthIconBg = Color(0xFFDBEAFE);
    if (allNull) {
      tasks.add(_taskRow(context, Icons.monitor_heart_outlined, '健康指标',
        trailing: '今日暂无记录，点击录入',
        status: 'pending', iconColor: healthIconColor, iconBg: healthIconBg,
        onTap: () => pushRoute(ref, 'trend')));
    } else if (hasAbnormal) {
      // 有异常时显示异常指标
      final abnormalParts = <String>[];
      if (bpAbnormal) abnormalParts.add('血压 ${bp['systolic']}/${bp['diastolic']} 偏高');
      tasks.add(_taskRow(context, Icons.warning_amber_rounded, '健康指标',
        trailing: abnormalParts.join(' · '),
        status: 'warning', iconColor: healthIconColor, iconBg: healthIconBg,
        onTap: () => pushRoute(ref, 'trend')));
    } else {
      // 全部正常
      tasks.add(_taskRow(context, Icons.check_circle, '健康指标',
        trailing: '指标正常',
        status: 'done', iconColor: healthIconColor, iconBg: healthIconBg,
        onTap: () => pushRoute(ref, 'trend')));
    }

    // ── 2. 运动 ──
    const exIconColor = Color(0xFFF59E0B);
    const exIconBg = Color(0xFFFEF3C7);
    final exercisePlan = ref.watch(currentExercisePlanProvider);
    var hasExercise = false;
    exercisePlan.whenOrNull(data: (plan) {
      if (plan != null) {
        final items = (plan['items'] as List?)?.cast<Map<String, dynamic>>() ?? [];
        final today = now.weekday % 7;
        final todayItem = items.cast<Map<String, dynamic>?>().firstWhere(
          (i) => i?['dayOfWeek'] == today, orElse: () => null);
        if (todayItem != null && todayItem['isRestDay'] != true) {
          hasExercise = true;
          final done = todayItem['isCompleted'] == true;
          final name = items.isNotEmpty ? (items.first['exerciseType']?.toString() ?? '运动') : '运动';
          final dur = items.isNotEmpty ? (items.first['durationMinutes']?.toString() ?? '30') : '30';
          tasks.add(_taskRow(context, Icons.directions_run, '$name $dur分钟',
            status: done ? 'done' : (now.hour >= 18 ? 'overdue' : 'pending'),
            iconColor: exIconColor, iconBg: exIconBg,
            onTap: () => pushRoute(ref, 'exercisePlan'),
          ));
        }
      }
    });
    if (!hasExercise) {
      tasks.add(_taskRow(context, Icons.directions_run, '运动',
        trailing: '暂无今日运动计划',
        status: 'pending', iconColor: exIconColor, iconBg: exIconBg,
        onTap: () => pushRoute(ref, 'exercisePlan')));
    }

    // ── 3. 用药打卡 ──
    const medIconColor = Color(0xFFEC4899);
    const medIconBg = Color(0xFFFCE7F3);
    reminders.whenOrNull(data: (meds) {
      if (meds.isNotEmpty) {
        final overdueMeds = meds.where((m) => m['status'] == 'overdue').toList();
        final upcomingMeds = meds.where((m) => m['status'] == 'upcoming').toList();
        final takenMeds = meds.where((m) => m['status'] == 'taken').toList();
        // 未服/过期的在前面
        for (final m in [...overdueMeds, ...upcomingMeds]) {
          final name = m['name']?.toString() ?? '药品';
          final time = m['scheduledTime']?.toString() ?? '';
          final isOverdue = m['status'] == 'overdue';
          tasks.add(_taskRow(context, Icons.medication_rounded, name,
            trailing: '${isOverdue ? "❗过期" : "⏳待服"} $time',
            status: isOverdue ? 'overdue' : 'pending',
            iconColor: medIconColor, iconBg: medIconBg,
            onTap: () => pushRoute(ref, 'medCheckIn')));
        }
        // 已服的合并显示
        if (takenMeds.isNotEmpty) {
          final names = takenMeds.map((m) => m['name']?.toString() ?? '药品').join('、');
          tasks.add(_taskRow(context, Icons.check_circle, names,
            trailing: '已服用 (${takenMeds.length}项)',
            status: 'done',
            iconColor: medIconColor, iconBg: medIconBg));
        }
      }
    });
    final hasMeds = reminders.asData?.value != null && (reminders.asData!.value).isNotEmpty;
    if (!hasMeds) {
      tasks.add(_taskRow(context, Icons.medication_rounded, '用药打卡',
        trailing: '暂无用药提醒',
        status: 'pending', iconColor: medIconColor, iconBg: medIconBg,
        onTap: () => pushRoute(ref, 'medications')));
    }

    return Container(
      margin: const EdgeInsets.only(bottom: 12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(28),
        border: Border.all(color: Color(0xFFE2E8F0), width: 2),
        boxShadow: AppColors.cardShadow,
      ),
      clipBehavior: Clip.antiAlias,
      child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
        Container(
          width: double.infinity, padding: const EdgeInsets.fromLTRB(16, 12, 16, 10),
          decoration: const BoxDecoration(gradient: AppColors.drawerGradient),
          child: Row(children: [
            Container(width: 28, height: 28, decoration: BoxDecoration(color: Colors.white.withOpacity(0.6), borderRadius: BorderRadius.circular(8)),
              child: const Icon(Icons.health_and_safety, size: 16, color: AppColors.primary)),
            const SizedBox(width: 8),
            const Text('今日健康', style: TextStyle(fontSize: 15, fontWeight: FontWeight.w600, color: AppColors.textPrimary)),
            const Spacer(),
            Text('${now.month}月${now.day}日', style: const TextStyle(fontSize: 13, color: AppColors.textSecondary)),
          ]),
        ),
        Padding(
          padding: const EdgeInsets.all(14),
          child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
            if (tasks.isEmpty)
              _taskRow(context, Icons.check_circle, '今日暂无待办', status: 'done')
            else
              ...tasks,
          ]),
        ),
      ]),
    );
  }

  Widget _taskRow(BuildContext context, IconData icon, String label, {String status = 'pending', String? trailing, VoidCallback? onTap, Color? iconColor, Color? iconBg}) {
    final colors = {'done': AppTheme.success, 'warning': AppColors.warning, 'pending': AppColors.textHint, 'overdue': AppTheme.error};
    final icons = {'done': Icons.check_circle, 'warning': Icons.warning, 'pending': Icons.circle_outlined, 'overdue': Icons.error};
    final isOverdue = status == 'overdue';
    final ic = iconColor ?? AppTheme.primary;
    final ibg = iconBg ?? AppTheme.primaryLight;
    return Padding(
      padding: const EdgeInsets.only(bottom: 8),
      child: GestureDetector(
        behavior: HitTestBehavior.opaque,
        onTap: onTap,
        child: Container(
          padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
          decoration: BoxDecoration(
            color: isOverdue ? const Color(0xFFFFEBEE) : Colors.transparent,
            borderRadius: BorderRadius.circular(8),
          ),
          child: Row(crossAxisAlignment: CrossAxisAlignment.center, children: [
            Container(width: 30, height: 30, decoration: BoxDecoration(color: ibg, borderRadius: BorderRadius.circular(8)), child: Icon(icon, size: 18, color: ic)),
            const SizedBox(width: 10),
            Expanded(child: Text(trailing ?? label, style: const TextStyle(fontSize: 16, color: AppColors.textPrimary))),
            Icon(icons[status] ?? Icons.circle_outlined, size: 21, color: colors[status] ?? Colors.grey),
          ]),
        ),
      ),
    );
  }
}

// ════════════════════════════════════════════════════════════════
// 内部数据类
// ════════════════════════════════════════════════════════════════

typedef _AgentIcon = IconData;

class _AgentColors {
  final List<Color> gradient;
  final Color bg;
  final Color border;
  final Color iconBg;
  final Color accent;
  const _AgentColors({
    required this.gradient,
    required this.bg,
    required this.border,
    required this.iconBg,
    required this.accent,
  });
}

class _AgentAction {
  final String label;
  final IconData icon;
  final bool isWide;
  final String? route;
  final String? action;

  const _AgentAction({required this.label, required this.icon, this.isWide = false, this.route, this.action});
}

class _AgentFeature {
  final IconData icon;
  final String title;
  final String desc;
  final String? imageAsset;

  const _AgentFeature(this.icon, this.title, this.desc, {this.imageAsset});
}

class _ConfirmField {
  final String label;
  final String value;
  final IconData icon;
  final bool editable;
  const _ConfirmField({
    required this.label,
    required this.value,
    this.icon = Icons.info_outline,
    this.editable = false,
  });
}

final _agentActions = <ActiveAgent, List<_AgentAction>>{
  ActiveAgent.health: [
    _AgentAction(label: '查看健康情况', icon: Icons.trending_up, isWide: true, route: 'trend'),
  ],
  ActiveAgent.diet: [
    _AgentAction(label: '拍照识别', icon: Icons.camera_alt_outlined, isWide: true, action: 'pickFoodCamera'),
    _AgentAction(label: '上传照片', icon: Icons.photo_library_outlined, isWide: true, action: 'pickFoodGallery'),
  ],
  ActiveAgent.medication: [
    _AgentAction(label: '用药管理', icon: Icons.medication_liquid_outlined, isWide: true, route: 'medications'),
    _AgentAction(label: '服药打卡', icon: Icons.check_circle_outline, isWide: true),
  ],
  ActiveAgent.consultation: [],
  ActiveAgent.report: [
    _AgentAction(label: '上传报告', icon: Icons.upload_file_outlined, isWide: true, route: 'reports'),
    _AgentAction(label: '查看历史', icon: Icons.history_outlined, isWide: true, route: 'reports'),
  ],
  ActiveAgent.exercise: [
    _AgentAction(label: '查看计划', icon: Icons.calendar_month_outlined, isWide: true, route: 'exercisePlan'),
    _AgentAction(label: '新建计划', icon: Icons.add_task_outlined, isWide: true, route: 'exerciseCreate'),
  ],
};

extension _AgentActionsExt on ActiveAgent {
  List<_AgentAction> get actions => _agentActions[this] ?? [const _AgentAction(label: '开始对话', icon: Icons.chat_outlined)];
}

// ════════════════════════════════════════════════════════════════
// 可展开的 AI 建议小组件
// ════════════════════════════════════════════════════════════════

class _ExpandableAdvice extends StatefulWidget {
  final String advice;
  const _ExpandableAdvice({required this.advice});

  @override
  State<_ExpandableAdvice> createState() => _ExpandableAdviceState();
}

class _ExpandableAdviceState extends State<_ExpandableAdvice> {
  bool _expanded = false;

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTap: () => setState(() => _expanded = !_expanded),
      child: Container(
        width: double.infinity,
        padding: const EdgeInsets.all(14),
        decoration: BoxDecoration(
          color: AppColors.backgroundSecondary,
          borderRadius: BorderRadius.circular(12),
          border: Border.all(color: const Color(0xFFE8E4FF), width: 0.8),
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Row(
              children: [
                const Icon(Icons.lightbulb_outline, size: 19, color: AppTheme.primary),
                const SizedBox(width: 6),
                const Text('AI 建议', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: AppTheme.primary)),
                const Spacer(),
                Icon(_expanded ? Icons.keyboard_arrow_up : Icons.keyboard_arrow_down, size: 21, color: AppColors.textHint),
              ],
            ),
            if (_expanded) ...[
              const SizedBox(height: 10),
              Text(widget.advice, style: const TextStyle(fontSize: 16, color: Color(0xFF555555), height: 1.6)),
            ],
          ],
        ),
      ),
    );
  }

}