import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:shadcn_ui/shadcn_ui.dart';
import '../../../core/app_colors.dart';
import '../../../core/app_design_tokens.dart';
import '../../../core/app_module_visuals.dart';
import '../../../core/app_theme.dart';
import '../../../core/navigation_provider.dart';
import '../../../providers/chat_provider.dart';
import '../../../providers/data_providers.dart';
import '../../../widgets/ai_content.dart';
import '../../../widgets/app_toast.dart';
import '../../../widgets/authenticated_network_image.dart';

ChatMessage messageAtDisplayIndex(List<ChatMessage> messages, int index) =>
    messages[index];

/// 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 streaming = ref.watch(
      chatProvider.select((state) => (state.isStreaming, state.thinkingText)),
    );

    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('开始和小脉健康对话吧', 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,
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
      cacheExtent: 180,
      itemCount: messages.length,
      itemBuilder: (context, index) {
        final msg = messageAtDisplayIndex(messages, index);
        return KeyedSubtree(
          key: ValueKey('chat-message-${msg.id}'),
          child: _buildMessageContent(
            context,
            ref,
            msg,
            streaming.$1,
            streaming.$2 ?? '',
          ),
        );
      },
    );
  }

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

  Widget _buildMessageContent(
    BuildContext context,
    WidgetRef ref,
    ChatMessage msg,
    bool isStreaming,
    String thinkingText,
  ) {
    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 && isStreaming && msg.content.trim().isEmpty) {
          return _buildThinkingBubble(context, thinkingText);
        }
        return _buildTextBubble(context, ref, msg);
    }
  }

  // ═══════════════════════════════════════════════════════════
  // 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 screenWidth = MediaQuery.sizeOf(context).width;
    final agentColors = _agentColors(agent);
    final artworkPath = _agentArtworkPath(agent);

    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 16),
        constraints: BoxConstraints(maxWidth: screenWidth * 0.95),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(28),
          border: Border.all(color: const Color(0xFFE8ECF3)),
          boxShadow: [
            BoxShadow(
              color: const Color(0xFF101828).withValues(alpha: 0.10),
              blurRadius: 24,
              offset: const Offset(0, 12),
            ),
            BoxShadow(
              color: const Color(0xFF101828).withValues(alpha: 0.06),
              blurRadius: 12,
              offset: const Offset(0, 4),
            ),
          ],
        ),
        clipBehavior: Clip.antiAlias,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Container(
              width: double.infinity,
              padding: const EdgeInsets.fromLTRB(22, 22, 22, 8),
              color: Colors.white,
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  _AgentMark(icon: info.$1, colors: agentColors),
                  const SizedBox(width: 18),
                  Expanded(
                    child: Padding(
                      padding: const EdgeInsets.only(top: 4),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(
                            info.$2,
                            style: AppTextStyles.chatTitle.copyWith(
                              fontSize: 28,
                              height: 1.1,
                              fontWeight: FontWeight.w800,
                              color: AppColors.textPrimary,
                            ),
                          ),
                          const SizedBox(height: 10),
                          Text(
                            info.$3,
                            style: AppTextStyles.summarySubtitle.copyWith(
                              fontSize: 16,
                              height: 1.45,
                              color: AppColors.textSecondary,
                            ),
                          ),
                        ],
                      ),
                    ),
                  ),
                ],
              ),
            ),
            Padding(
              padding: const EdgeInsets.fromLTRB(8, 0, 8, 2),
              child: SizedBox(
                height: 214,
                width: double.infinity,
                child: Image.asset(artworkPath, fit: BoxFit.contain),
              ),
            ),
            if (actions.isNotEmpty) ...[
              const SizedBox(height: 14),
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 20),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    for (int i = 0; i < actions.length; i++) ...[
                      if (i > 0) const SizedBox(width: 10),
                      Flexible(
                        child: _buildActionButton(
                          actions[i],
                          context,
                          ref,
                          agentColors,
                        ),
                      ),
                    ],
                  ],
                ),
              ),
            ],
            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.bg,
                  borderRadius: BorderRadius.circular(14),
                  border: Border.all(
                    color: agentColors.accent.withValues(alpha: 0.14),
                  ),
                ),
                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.action == 'openReportUpload') {
          pushRoute(ref, 'reports', params: {'openUpload': 'true'});
        } 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(28),
      child: Container(
        padding: const EdgeInsets.all(1.4),
        decoration: BoxDecoration(
          gradient: AppColors.actionOutlineGradient,
          borderRadius: BorderRadius.circular(28),
        ),
        child: Container(
          padding: const EdgeInsets.symmetric(vertical: 14, horizontal: 18),
          decoration: BoxDecoration(
            color: Colors.white,
            borderRadius: BorderRadius.circular(26.5),
          ),
          child: Row(
            mainAxisSize: MainAxisSize.min,
            children: [
              ShaderMask(
                shaderCallback: (bounds) =>
                    AppColors.actionOutlineGradient.createShader(bounds),
                child: Icon(a.icon, size: 24, color: Colors.white),
              ),
              const SizedBox(width: 10),
              Text(
                a.label,
                style: const TextStyle(
                  fontSize: 17,
                  fontWeight: FontWeight.w700,
                  color: AppColors.textPrimary,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  String _agentArtworkPath(ActiveAgent agent) {
    return switch (agent) {
      ActiveAgent.consultation =>
        'assets/branding/agent_illustration_consultation.png',
      ActiveAgent.health => 'assets/branding/agent_illustration_health.png',
      ActiveAgent.diet => 'assets/branding/agent_illustration_diet.png',
      ActiveAgent.medication =>
        'assets/branding/agent_illustration_medication.png',
      ActiveAgent.report => 'assets/branding/agent_illustration_report.png',
      ActiveAgent.exercise => 'assets/branding/agent_illustration_exercise.png',
      _ => 'assets/branding/agent_illustration_health.png',
    };
  }

  // ═══════════════════════════════════════════════════════════
  // 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 medicationOperation = meta['operation']?.toString() ?? 'create';
    final isMedicationCheckIn = medicationOperation == 'confirm';
    final screenWidth = MediaQuery.sizeOf(context).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;
    final rawItems = meta['items'];
    final healthItems = rawItems is List
        ? rawItems
              .whereType<Map>()
              .map((item) => Map<String, dynamic>.from(item))
              .toList()
        : <Map<String, dynamic>>[];
    const confirmGradient = AppColors.primaryGradient;
    const confirmOutline = AppColors.actionOutlineGradient;

    String title = '数据确认';
    IconData titleIcon = Icons.assignment_outlined;
    String mainLabel = '';
    String mainValue = '';
    String mainUnit = '';
    bool abnormal = meta['abnormal'] as bool? ?? false;
    var headerColor = AppColors.primary;
    String recordTime = meta['recordTime'] as String? ?? '';
    var itemCount = 1;
    var confirmationHint = '请核对后确认，本次将一并录入';
    final fields = <_ConfirmField>[];

    if (recordTime.isEmpty) recordTime = _formatTime(msg.createdAt);

    if (isMedication) {
      title = isMedicationCheckIn ? '服药打卡确认' : '药品录入确认';
      titleIcon = AppModuleVisuals.medication.icon;
      final name = meta['name']?.toString() ?? '';
      final dosage = meta['dosage']?.toString() ?? '';
      final frequency = meta['frequency']?.toString() ?? '';
      final time = meta['time']?.toString() ?? '';
      final duration =
          int.tryParse(meta['duration_days']?.toString() ?? '') ?? 0;

      if (name.isNotEmpty) {
        fields.add(
          _ConfirmField(
            icon: AppModuleVisuals.medication.icon,
            label: '药品',
            value: name,
          ),
        );
      }
      if (dosage.isNotEmpty) {
        fields.add(
          _ConfirmField(
            icon: Icons.science_outlined,
            label: '剂量',
            value: dosage,
          ),
        );
      }
      if (frequency.isNotEmpty) {
        fields.add(
          _ConfirmField(
            icon: Icons.event_repeat_outlined,
            label: '频率',
            value: _freqLabel(frequency),
          ),
        );
      }
      if (time.isNotEmpty) {
        fields.add(
          _ConfirmField(
            icon: Icons.schedule_outlined,
            label: '时间',
            value: time,
          ),
        );
      }
      if (duration > 0) {
        fields.add(
          _ConfirmField(
            icon: Icons.calendar_today_outlined,
            label: '周期',
            value: '$duration 天',
          ),
        );
      }
      confirmationHint = isMedicationCheckIn
          ? '请核对后确认，本次将完成服药打卡'
          : '请核对后确认，本次将创建用药计划';
    } else if (isExercise) {
      title = '运动计划确认';
      titleIcon = AppModuleVisuals.exercise.icon;
      final exerciseName =
          (meta['value'] ?? meta['name'] ?? meta['exerciseType'] ?? '运动计划')
              .toString();
      final duration = (meta['unit'] ?? meta['durationUnit'] ?? '').toString();
      final days =
          int.tryParse(
            (meta['durationDays'] ?? meta['day_count'])?.toString() ?? '',
          ) ??
          0;
      final reminder = (meta['reminderTime'] ?? meta['reminder_time'] ?? '')
          .toString();

      fields.add(
        _ConfirmField(
          icon: Icons.directions_walk_outlined,
          label: '运动',
          value: exerciseName,
        ),
      );
      if (duration.isNotEmpty) {
        fields.add(
          _ConfirmField(
            icon: Icons.timer_outlined,
            label: '时长',
            value: duration,
          ),
        );
      }
      if (days > 0) {
        fields.add(
          _ConfirmField(
            icon: Icons.calendar_today_outlined,
            label: '周期',
            value: '连续 $days 天',
          ),
        );
      }
      if (reminder.isNotEmpty) {
        fields.add(
          _ConfirmField(
            icon: Icons.notifications_none_rounded,
            label: '提醒',
            value: reminder,
          ),
        );
      }
      confirmationHint = '请核对后确认，本次将创建运动计划';
    } else {
      title = '健康数据确认';
      titleIcon = AppModuleVisuals.healthOverviewIcon;
      final items = healthItems.isNotEmpty
          ? healthItems
          : [
              <String, dynamic>{
                'type': backendType,
                'value': meta['value']?.toString() ?? '',
                'unit': meta['unit']?.toString() ?? _getMetricUnit(backendType),
                'abnormal': meta['abnormal'] == true,
              },
            ];
      itemCount = items.length;
      abnormal = items.any((item) => item['abnormal'] == true);
      for (final item in items) {
        final type = item['type']?.toString() ?? '';
        if (items.length == 1) headerColor = _getMetricColor(type);
        fields.add(
          _ConfirmField(
            icon: _getMetricIconData(type),
            label: _getMetricName(type),
            value: item['value']?.toString() ?? '',
            unit: item['unit']?.toString() ?? _getMetricUnit(type),
            abnormal: item['abnormal'] == true,
            color: _getMetricColor(type),
          ),
        );
      }
      confirmationHint = itemCount > 1
          ? '请核对后确认，本次将一并录入 $itemCount 项健康数据'
          : '请核对后确认，本次将录入 1 项健康数据';
    }

    final showLegacySummary = fields.isEmpty;

    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 16),
        constraints: BoxConstraints(maxWidth: screenWidth * 0.95),
        decoration: BoxDecoration(
          gradient: const LinearGradient(
            begin: Alignment.topLeft,
            end: Alignment.bottomRight,
            colors: [Color(0xFFFFFFFF), Color(0xFFF7F4FF)],
          ),
          borderRadius: BorderRadius.circular(28),
          boxShadow: [
            BoxShadow(
              color: AppColors.primary.withValues(alpha: 0.16),
              blurRadius: 28,
              offset: const Offset(0, 14),
            ),
            BoxShadow(
              color: const Color(0xFF101828).withValues(alpha: 0.06),
              blurRadius: 12,
              offset: const Offset(0, 4),
            ),
          ],
        ),
        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: BoxDecoration(
                color: Colors.white,
                border: Border(
                  bottom: BorderSide(
                    color: headerColor.withValues(alpha: 0.16),
                  ),
                ),
              ),
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Container(
                    width: 56,
                    height: 56,
                    decoration: BoxDecoration(
                      color: headerColor.withValues(alpha: 0.12),
                      borderRadius: BorderRadius.circular(16),
                      boxShadow: [
                        BoxShadow(
                          color: headerColor.withValues(alpha: 0.12),
                          blurRadius: 10,
                          offset: const Offset(0, 4),
                        ),
                      ],
                    ),
                    child: Icon(titleIcon, size: 28, color: headerColor),
                  ),
                  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.textHint,
                            ),
                            const SizedBox(width: 4),
                            Text(
                              recordTime,
                              style: TextStyle(
                                fontSize: 15,
                                color: AppColors.textHint,
                              ),
                            ),
                          ],
                        ),
                      ],
                    ),
                  ),
                  const SizedBox(width: 10),
                  Container(
                    padding: const EdgeInsets.symmetric(
                      horizontal: 11,
                      vertical: 6,
                    ),
                    decoration: BoxDecoration(
                      color: headerColor.withValues(alpha: 0.10),
                      borderRadius: BorderRadius.circular(999),
                      border: Border.all(
                        color: headerColor.withValues(alpha: 0.20),
                      ),
                    ),
                    child: Text(
                      '$itemCount 项',
                      style: TextStyle(
                        color: headerColor,
                        fontSize: 15,
                        fontWeight: FontWeight.w700,
                      ),
                    ),
                  ),
                ],
              ),
            ),

            // ── 主要数据展示区（大卡片） ──
            if (showLegacySummary)
              Padding(
                padding: const EdgeInsets.fromLTRB(20, 14, 20, 0),
                child: Container(
                  padding: const EdgeInsets.all(1.4),
                  decoration: BoxDecoration(
                    gradient: confirmOutline,
                    borderRadius: BorderRadius.circular(20),
                  ),
                  child: Container(
                    width: double.infinity,
                    padding: const EdgeInsets.all(20),
                    decoration: BoxDecoration(
                      color: Colors.white,
                      borderRadius: BorderRadius.circular(18),
                    ),
                    child: Row(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Container(
                          width: 68,
                          height: 68,
                          decoration: BoxDecoration(
                            color: AppColors.primarySoft,
                            borderRadius: BorderRadius.circular(18),
                          ),
                          child: Center(
                            child: isHealth
                                ? Icon(
                                    _getMetricIconData(backendType),
                                    size: 34,
                                    color: AppColors.primary,
                                  )
                                : Icon(
                                    isMedication
                                        ? AppModuleVisuals.medication.icon
                                        : AppModuleVisuals.exercise.icon,
                                    size: 36,
                                    color: AppColors.primary,
                                  ),
                          ),
                        ),
                        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.w600,
                                          color: abnormal
                                              ? AppColors.error
                                              : AppColors.textPrimary,
                                          letterSpacing: -0.5,
                                        ),
                                      ),
                                      if (mainUnit.isNotEmpty)
                                        TextSpan(
                                          text: ' $mainUnit',
                                          style: TextStyle(
                                            fontSize: 19,
                                            color: abnormal
                                                ? AppColors.error
                                                : AppColors.primary,
                                            fontWeight: FontWeight.w500,
                                          ),
                                        ),
                                    ],
                                  ),
                                ),
                              ],
                            ],
                          ),
                        ),
                      ],
                    ),
                  ),
                ),
              ),

            // ── 异常提示 ──
            if (abnormal) ...[
              const SizedBox(height: 16),
              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.primaryLight),
                  ),
                  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]),
                      ],
                    ],
                  ),
                ),
              ),
            ],

            // ── 确认按钮（白色底+渐变边框） ──
            const SizedBox(height: 14),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Container(
                width: double.infinity,
                padding: const EdgeInsets.symmetric(
                  horizontal: 14,
                  vertical: 11,
                ),
                decoration: BoxDecoration(
                  color: AppColors.primarySoft,
                  borderRadius: BorderRadius.circular(14),
                ),
                child: Row(
                  children: [
                    const Icon(
                      Icons.verified_user_outlined,
                      size: 19,
                      color: AppColors.primary,
                    ),
                    const SizedBox(width: 9),
                    Expanded(
                      child: Text(
                        confirmationHint,
                        style: const TextStyle(
                          fontSize: 14,
                          height: 1.35,
                          color: AppColors.textSecondary,
                          fontWeight: FontWeight.w500,
                        ),
                      ),
                    ),
                  ],
                ),
              ),
            ),
            const SizedBox(height: 12),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Container(
                width: double.infinity,
                height: 56,
                padding: const EdgeInsets.all(1.4),
                decoration: BoxDecoration(
                  gradient: confirmOutline,
                  borderRadius: BorderRadius.circular(20),
                  boxShadow: [
                    BoxShadow(
                      color: AppColors.primary.withValues(alpha: 0.20),
                      blurRadius: 18,
                      offset: const Offset(0, 8),
                    ),
                  ],
                ),
                child: msg.confirmed || msg.isReadOnly
                    ? Container(
                        decoration: BoxDecoration(
                          gradient: AppColors.successButtonGradient,
                          borderRadius: BorderRadius.circular(18),
                        ),
                        child: Row(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            Icon(
                              Icons.check_circle_outline,
                              size: 22,
                              color: Colors.white,
                            ),
                            const SizedBox(width: 8),
                            Text(
                              msg.isReadOnly
                                  ? '历史记录'
                                  : (isMedicationCheckIn ? '打卡成功' : '录入成功'),
                              style: const TextStyle(
                                fontSize: 19,
                                fontWeight: FontWeight.w700,
                                color: Colors.white,
                              ),
                            ),
                          ],
                        ),
                      )
                    : Material(
                        color: Colors.transparent,
                        child: InkWell(
                          onTap: () async {
                            final error = await ref
                                .read(chatProvider.notifier)
                                .confirmMessage(msg.id);
                            if (error != null && context.mounted) {
                              AppToast.show(
                                context,
                                error,
                                type: AppToastType.error,
                              );
                            }
                          },
                          borderRadius: BorderRadius.circular(18),
                          child: Container(
                            decoration: BoxDecoration(
                              color: Colors.white,
                              borderRadius: BorderRadius.circular(18),
                            ),
                            child: Row(
                              mainAxisAlignment: MainAxisAlignment.center,
                              children: [
                                Container(
                                  width: 32,
                                  height: 32,
                                  decoration: BoxDecoration(
                                    gradient: confirmGradient,
                                    borderRadius: BorderRadius.circular(10),
                                  ),
                                  child: const Icon(
                                    Icons.check_rounded,
                                    size: 19,
                                    color: Colors.white,
                                  ),
                                ),
                                const SizedBox(width: 10),
                                Text(
                                  isMedicationCheckIn ? '确认打卡' : '确认录入',
                                  style: const TextStyle(
                                    fontSize: 18,
                                    fontWeight: FontWeight.w600,
                                    color: AppColors.textPrimary,
                                  ),
                                ),
                              ],
                            ),
                          ),
                        ),
                      ),
              ),
            ),
            const SizedBox(height: 20),
          ],
        ),
      ),
    );
  }

  Widget _buildFieldRow(_ConfirmField field) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          Container(
            width: 42,
            height: 42,
            decoration: BoxDecoration(
              color: (field.color ?? AppColors.primary).withValues(alpha: 0.10),
              shape: BoxShape.circle,
            ),
            child: Icon(
              field.icon ?? Icons.list_alt_rounded,
              size: 22,
              color: field.abnormal
                  ? AppColors.error
                  : (field.color ?? AppColors.primary),
            ),
          ),
          const SizedBox(width: 14),
          SizedBox(width: 72, child: _buildFieldLabel(field.label)),
          const SizedBox(width: 12),
          Expanded(
            child: FittedBox(
              fit: BoxFit.scaleDown,
              alignment: Alignment.centerRight,
              child: _buildFieldValue(field, TextAlign.right),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildFieldLabel(String label) {
    return Text(
      label,
      style: const TextStyle(
        fontSize: 15,
        color: AppColors.textSecondary,
        fontWeight: FontWeight.w500,
      ),
    );
  }

  Widget _buildFieldValue(_ConfirmField field, TextAlign textAlign) {
    return Text.rich(
      TextSpan(
        children: [
          TextSpan(text: field.value.isNotEmpty ? field.value : '未设置'),
          if (field.unit.isNotEmpty)
            TextSpan(
              text: '  ${field.unit}',
              style: const TextStyle(
                fontSize: 14,
                fontWeight: FontWeight.w500,
                color: AppColors.textHint,
              ),
            ),
        ],
      ),
      textAlign: textAlign,
      maxLines: 1,
      softWrap: false,
      style: const TextStyle(
        fontSize: 18,
        fontWeight: FontWeight.w700,
        color: AppColors.textPrimary,
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 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),
        child: Container(
          padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 14),
          decoration: const BoxDecoration(
            color: Color(0xFFF8F8FF),
            borderRadius: BorderRadius.only(
              topLeft: Radius.circular(3),
              topRight: Radius.circular(18.6),
              bottomLeft: Radius.circular(18.6),
              bottomRight: Radius.circular(18.6),
            ),
          ),
          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,
    WidgetRef ref,
    ChatMessage msg,
  ) {
    final isUser = msg.isUser;
    final imageUrl = msg.metadata?['imageUrl'] as String?;
    final localPath = msg.metadata?['localImagePath'] as String?;
    final pdfFileName =
        msg.metadata?['pdfFileName']?.toString() ??
        msg.metadata?['fileName']?.toString();
    final hasImage = imageUrl != null || localPath != null;
    final hasPdf = pdfFileName != null && pdfFileName.isNotEmpty;

    return Align(
      alignment: isUser ? Alignment.centerRight : Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        constraints: BoxConstraints(
          maxWidth: MediaQuery.sizeOf(context).width * 0.82,
        ),
        padding: EdgeInsets.zero,
        child: Container(
          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
          decoration: BoxDecoration(
            color: isUser ? const Color(0xFF5F56FF) : const Color(0xFFFAFAFF),
            borderRadius: BorderRadius.only(
              topLeft: Radius.circular(isUser ? 18.6 : 3),
              topRight: Radius.circular(isUser ? 3 : 18.6),
              bottomLeft: const Radius.circular(18.6),
              bottomRight: const Radius.circular(18.6),
            ),
          ),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              // 文字内容
              if (isUser)
                SelectableText(
                  msg.content,
                  style: AppTextStyles.chatBody.copyWith(color: Colors.white),
                )
              else
                AiMarkdownView(
                  data: msg.content,
                  onTapLink: (text, href, title) =>
                      _handleMarkdownLink(context, ref, href),
                ),

              // 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
                            ? AuthenticatedNetworkImage(
                                imageUrl: 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 (hasPdf)
                Container(
                  margin: const EdgeInsets.only(top: 8),
                  padding: const EdgeInsets.symmetric(
                    horizontal: 10,
                    vertical: 8,
                  ),
                  decoration: BoxDecoration(
                    color: isUser
                        ? Colors.white.withValues(alpha: 0.16)
                        : AppColors.backgroundSecondary,
                    borderRadius: BorderRadius.circular(10),
                  ),
                  child: Row(
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      Icon(
                        Icons.picture_as_pdf_outlined,
                        size: 18,
                        color: isUser ? Colors.white : AppColors.error,
                      ),
                      const SizedBox(width: 6),
                      Flexible(
                        child: Text(
                          pdfFileName,
                          maxLines: 1,
                          overflow: TextOverflow.ellipsis,
                          style: TextStyle(
                            fontSize: 13,
                            fontWeight: FontWeight.w700,
                            color: isUser
                                ? Colors.white
                                : AppColors.textPrimary,
                          ),
                        ),
                      ),
                    ],
                  ),
                ),

              if (!isUser && msg.content.isNotEmpty) const AiGeneratedNote(),
            ],
          ),
        ),
      ),
    );
  }

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

  static void _showFullImage(BuildContext context, String? path) {
    if (path == null) return;
    final isNetwork =
        path.startsWith('http://') ||
        path.startsWith('https://') ||
        path.startsWith('/uploads/') ||
        path.startsWith('/api/');
    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: isNetwork
                    ? AuthenticatedNetworkImage(
                        imageUrl: 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),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  /// 处理 AI 回复里的 markdown 链接点击：
  /// - app://diet → 触发拍照/相册选择，跳到饮食拍照流程
  /// - app://report → 跳到报告列表（用户可在那里上传新报告）
  /// - app://device → 跳到蓝牙设备页
  /// - 其他 app://xxx → 当作 route name 直接跳
  static void _handleMarkdownLink(
    BuildContext context,
    WidgetRef ref,
    String? href,
  ) {
    if (href == null || href.isEmpty) return;
    final uri = Uri.tryParse(href);
    if (uri == null) return;

    if (uri.scheme == 'app') {
      switch (uri.host) {
        case 'diet':
          ref.read(chatProvider.notifier).triggerAgent(ActiveAgent.diet, '拍饮食');
          break;
        case 'report':
          pushRoute(ref, 'reports');
          break;
        case 'device':
          pushRoute(ref, 'devices');
          break;
        default:
          if (uri.host.isNotEmpty) pushRoute(ref, uri.host);
      }
    }
  }

  String _freqLabel(String freq) {
    final normalized = freq.trim().toLowerCase().replaceAll(
      RegExp(r'[\s_-]+'),
      '',
    );
    switch (normalized) {
      case 'daily':
      case 'oncedaily':
        return '每天一次';
      case 'twicedaily':
        return '每天两次';
      case 'threetimesdaily':
        return '每天三次';
      case 'everyotherday':
        return '隔天一次';
      case 'weekly':
        return '每周一次';
      case 'monthly':
        return '每月一次';
      case 'asneeded':
        return '按需服用';
      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 (_normalizeMetricType(type)) {
      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 '';
    }
  }

  IconData _getMetricIconData(String type) {
    switch (_normalizeMetricType(type)) {
      case 'blood_pressure':
        return HealthMetricVisuals.bloodPressureIcon;
      case 'heart_rate':
        return HealthMetricVisuals.heartRateIcon;
      case 'glucose':
        return HealthMetricVisuals.glucoseIcon;
      case 'spo2':
        return HealthMetricVisuals.spo2Icon;
      case 'weight':
        return HealthMetricVisuals.weightIcon;
      case 'exercise':
        return Icons.directions_run_outlined;
      default:
        return Icons.query_stats_outlined;
    }
  }

  Color _getMetricColor(String type) {
    switch (_normalizeMetricType(type)) {
      case 'blood_pressure':
        return HealthMetricVisuals.bloodPressureColor;
      case 'heart_rate':
        return HealthMetricVisuals.heartRateColor;
      case 'glucose':
        return HealthMetricVisuals.glucoseColor;
      case 'spo2':
        return HealthMetricVisuals.spo2Color;
      case 'weight':
        return HealthMetricVisuals.weightColor;
      default:
        return AppColors.primary;
    }
  }

  String _getMetricName(String type) {
    switch (_normalizeMetricType(type)) {
      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';
    }
  }

  String _normalizeMetricType(String type) {
    return switch (type.trim().toLowerCase().replaceAll('-', '_')) {
      'bloodpressure' || 'blood_pressure' => 'blood_pressure',
      'heartrate' || 'heart_rate' || 'pulse' => 'heart_rate',
      'glucose' || 'bloodglucose' || 'blood_glucose' => 'glucose',
      'spo2' || 'bloodoxygen' || 'blood_oxygen' => 'spo2',
      'weight' => 'weight',
      'exercise' => 'exercise',
      final normalized => normalized,
    };
  }

  static _AgentColors _agentColors(ActiveAgent agent) {
    _AgentColors fromModule(AppModuleVisual visual) => _AgentColors(
      gradient: [visual.gradient.colors.first, visual.gradient.colors.last],
      bg: visual.lightColor,
      border: visual.borderColor,
      iconBg: visual.lightColor,
      accent: visual.color,
      iconColor: Colors.white,
      verticalGradient: true,
    );

    return switch (agent) {
      ActiveAgent.health => _AgentColors(
        gradient: AppModuleVisuals.health.gradient.colors,
        bg: AppModuleVisuals.health.lightColor,
        border: AppModuleVisuals.health.borderColor,
        iconBg: AppModuleVisuals.health.lightColor,
        accent: AppModuleVisuals.health.color,
        iconColor: Colors.white,
        verticalGradient: true,
      ),
      ActiveAgent.diet => fromModule(AppModuleVisuals.diet),
      ActiveAgent.medication => fromModule(AppModuleVisuals.medication),
      ActiveAgent.report => fromModule(AppModuleVisuals.report),
      ActiveAgent.exercise => fromModule(AppModuleVisuals.exercise),
      ActiveAgent.consultation => _AgentColors(
        gradient: [Color(0xFFFFCAD4), Color(0xFFFF9AAE)],
        bg: const Color(0xFFFFF4F6),
        border: const Color(0xFFFFDFE7),
        iconBg: const Color(0xFFFFEEF2),
        accent: const Color(0xFFFF7F98),
        iconColor: Colors.white,
        verticalGradient: true,
      ),
      _ => _AgentColors(
        gradient: [AppColors.primary, AppColors.blueMeasure],
        bg: const Color(0xFFF6F3FF),
        border: const Color(0xFFE7E0FF),
        iconBg: const Color(0xFFF0EDFF),
        accent: AppColors.primary,
        iconColor: Colors.white,
      ),
    };
  }

  static (_AgentIcon, String, String) _agentInfo(ActiveAgent agent) {
    return switch (agent) {
      ActiveAgent.health => (
        AppModuleVisuals.healthOverviewIcon,
        '记数据',
        '录入血压、血糖、心率等日常指标',
      ),
      ActiveAgent.diet => (AppModuleVisuals.diet.icon, '拍饮食', '拍照识别食物热量和营养成分'),
      ActiveAgent.medication => (LucideIcons.pill, '药管家', '管理药品、提醒服药、追踪用量'),
      ActiveAgent.consultation => (
        LucideIcons.messageCircle,
        'AI问诊',
        '现在由小脉为您进行预问诊，您可以放心说出身体的不适和疑问',
      ),
      ActiveAgent.report => (LucideIcons.fileText, '报告分析', '上传体检报告，AI 辅助解读'),
      ActiveAgent.exercise => (
        Icons.directions_run_outlined,
        '运动',
        '制定运动计划，打卡记录进度',
      ),
      _ => (Icons.forum_outlined, 'AI 助手', '血管病患者的 AI 健康管理助手'),
    };
  }

  static String _agentTip(ActiveAgent agent) => switch (agent) {
    ActiveAgent.health => '请提供指标名称、具体数值和测量时间，如"今天早上血压130/85、心率72"',
    ActiveAgent.diet => '请提供餐次、食物和分量，或直接拍照，如"早餐2个鸡蛋、1杯牛奶"',
    ActiveAgent.medication => '请提供药品名称、每次剂量、服药频率和时间，如"阿司匹林每次1片、每天早晚8点"',
    ActiveAgent.consultation => '请说明症状、出现时间、持续多久和严重程度，小脉会继续追问并给出建议',
    ActiveAgent.report => '请上传完整报告或清晰照片，并说明检查项目和日期，AI 将提取指标并解读',
    ActiveAgent.exercise => '请提供运动类型、每次时长、每周频率和目标，如"散步30分钟、每周5天"',
    _ => '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 snapshotAsync = ref.watch(todayHealthSnapshotProvider);
    final snapshot = snapshotAsync.value;
    if (snapshot == null) {
      return _taskCardPlaceholder(
        snapshotAsync.hasError ? '今日健康暂时无法获取' : '正在获取今日健康',
        isError: snapshotAsync.hasError,
        onRetry: () => ref.invalidate(todayHealthSnapshotProvider),
      );
    }
    return _taskCardBubble(
      context,
      ref,
      snapshot.health,
      AsyncValue.data(snapshot.reminders),
      AsyncValue.data(snapshot.exercisePlan),
    );
  }

  Widget _taskCardPlaceholder(
    String message, {
    required bool isError,
    required VoidCallback onRetry,
  }) {
    final now = DateTime.now();
    return Container(
      margin: const EdgeInsets.only(bottom: 12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(28),
        boxShadow: AppColors.cardShadow,
      ),
      clipBehavior: Clip.antiAlias,
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Container(
            width: double.infinity,
            padding: const EdgeInsets.fromLTRB(16, 13, 16, 11),
            decoration: const BoxDecoration(
              gradient: LinearGradient(
                begin: Alignment.centerLeft,
                end: Alignment.centerRight,
                colors: [Color(0xFFE0C3FC), Color(0xFF8EC5FC)],
              ),
              borderRadius: BorderRadius.vertical(top: Radius.circular(28)),
            ),
            child: Row(
              children: [
                const Text(
                  '今日健康',
                  style: TextStyle(
                    fontSize: 16,
                    fontWeight: FontWeight.w600,
                    color: AppColors.textPrimary,
                  ),
                ),
                const Spacer(),
                Text(
                  '${now.month}月${now.day}日',
                  style: const TextStyle(
                    fontSize: 13,
                    color: AppColors.textSecondary,
                  ),
                ),
              ],
            ),
          ),
          InkWell(
            onTap: isError ? onRetry : null,
            child: Padding(
              padding: const EdgeInsets.fromLTRB(16, 10, 16, 11),
              child: Row(
                children: [
                  SizedBox.square(
                    dimension: 28,
                    child: isError
                        ? const Icon(
                            LucideIcons.refreshCw,
                            size: 18,
                            color: AppColors.textSecondary,
                          )
                        : const CircularProgressIndicator(strokeWidth: 2),
                  ),
                  const SizedBox(width: 10),
                  Expanded(
                    child: Text(
                      isError ? '$message，点击重试' : message,
                      style: const TextStyle(
                        fontSize: 14,
                        fontWeight: FontWeight.w600,
                        color: AppColors.textSecondary,
                      ),
                    ),
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }

  Widget _taskCardBubble(
    BuildContext context,
    WidgetRef ref,
    Map<String, dynamic> healthData,
    AsyncValue<List<Map<String, dynamic>>> reminders,
    AsyncValue<Map<String, dynamic>?> exercisePlan,
  ) {
    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 Map && hr['value'] is num ? '${hr['value']}' : null;
    final bs = healthData['Glucose'];
    final bsText = bs is Map && bs['value'] is num ? '${bs['value']}' : null;
    final bo = healthData['SpO2'];
    final boText = bo is Map && bo['value'] is num ? '${bo['value']}' : null;
    final wt = healthData['Weight'];
    final wtText = wt is Map && wt['value'] is num ? '${wt['value']}' : null;
    final allNull =
        bpText == null &&
        hrText == null &&
        bsText == null &&
        boText == null &&
        wtText == null;

    // ── 多指标异常检测 ──
    // 优先使用后端保存时计算出的 IsAbnormal，兜底规则必须和后端 HealthRecordRules 保持一致。
    final abnormals = <String>[];
    final bpAbnormal = _recordIsAbnormal(
      bp,
      fallback: () {
        if (bp is! Map) return false;
        final s = _numValue(bp['systolic'] ?? bp['Systolic']);
        final d = _numValue(bp['diastolic'] ?? bp['Diastolic']);
        return s != null &&
            d != null &&
            (s >= 140 || d >= 90 || s <= 89 || d <= 59);
      },
    );
    if (bpAbnormal && bp is Map) {
      final s = _numValue(bp['systolic'] ?? bp['Systolic']);
      final d = _numValue(bp['diastolic'] ?? bp['Diastolic']);
      abnormals.add(
        '血压 ${s?.toStringAsFixed(0) ?? '--'}/${d?.toStringAsFixed(0) ?? '--'} 异常',
      );
    }
    final hrAbnormal = _recordIsAbnormal(
      hr,
      fallback: () {
        final v = _numValue(hr is Map ? hr['value'] ?? hr['Value'] : null);
        return v != null && (v > 100 || v < 60);
      },
    );
    if (hrAbnormal && hr is Map) {
      final v = _numValue(hr['value'] ?? hr['Value']);
      abnormals.add('心率 ${v?.toStringAsFixed(0) ?? '--'} 异常');
    }
    final bsAbnormal = _recordIsAbnormal(
      bs,
      fallback: () {
        final v = _numValue(bs is Map ? bs['value'] ?? bs['Value'] : null);
        return v != null && (v > 6.1 || v < 3.9);
      },
    );
    if (bsAbnormal && bs is Map) {
      final v = _numValue(bs['value'] ?? bs['Value']);
      abnormals.add('血糖 ${v?.toStringAsFixed(1) ?? '--'} 异常');
    }
    final boAbnormal = _recordIsAbnormal(
      bo,
      fallback: () {
        final v = _numValue(bo is Map ? bo['value'] ?? bo['Value'] : null);
        return v != null && v <= 94;
      },
    );
    if (boAbnormal && bo is Map) {
      final v = _numValue(bo['value'] ?? bo['Value']);
      abnormals.add('血氧 ${v?.toStringAsFixed(0) ?? '--'}% 异常');
    }
    final hasAbnormal = abnormals.isNotEmpty;

    // ── 1. 健康指标 ──
    // 没记录则整行不显示（避免每天唠叨提醒）
    final healthIconColor = AppModuleVisuals.health.color;
    final healthIconBg = AppModuleVisuals.health.lightColor;
    if (allNull) {
      // 不显示
    } else if (hasAbnormal) {
      final trailing = abnormals.length == 1
          ? abnormals.first
          : '${abnormals.length} 项指标异常';
      tasks.add(
        _taskRow(
          context,
          AppModuleVisuals.healthOverviewIcon,
          '健康指标',
          trailing: trailing,
          status: 'warning',
          iconGradient: AppModuleVisuals.health.gradient,
          onTap: () => pushRoute(ref, 'trend'),
        ),
      );
    } else {
      // 全部正常
      tasks.add(
        _taskRow(
          context,
          AppModuleVisuals.healthOverviewIcon,
          '健康指标',
          trailing: '指标正常',
          status: 'done',
          iconColor: healthIconColor,
          iconBg: healthIconBg,
          iconGradient: AppModuleVisuals.health.gradient,
          onTap: () => pushRoute(ref, 'trend'),
        ),
      );
    }

    // ── 2. 运动 ──
    final exIconColor = AppModuleVisuals.exercise.color;
    final exIconBg = AppModuleVisuals.exercise.lightColor;
    var hasExercise = false;
    exercisePlan.when(
      data: (plan) {
        if (plan != null) {
          final items =
              (plan['items'] as List?)?.cast<Map<String, dynamic>>() ?? [];
          final today =
              '${now.year}-${now.month.toString().padLeft(2, '0')}-${now.day.toString().padLeft(2, '0')}';
          final todayItem = items.cast<Map<String, dynamic>?>().firstWhere(
            (i) => i?['scheduledDate']?.toString() == today,
            orElse: () => null,
          );
          if (todayItem != null && todayItem['isRestDay'] != true) {
            hasExercise = true;
            final done = todayItem['isCompleted'] == true;
            final name = items.isNotEmpty
                ? (items.first['exerciseType']?.toString() ?? '运动')
                : '运动';
            final dur = items.isNotEmpty
                ? (items.first['durationMinutes']?.toString() ?? '30')
                : '30';
            tasks.add(
              _taskRow(
                context,
                AppModuleVisuals.exercise.icon,
                '$name $dur分钟',
                status: done
                    ? 'done'
                    : (now.hour >= 18 ? 'overdue' : 'pending'),
                iconColor: exIconColor,
                iconBg: exIconBg,
                iconGradient: AppModuleVisuals.exercise.gradient,
                onTap: () => pushRoute(ref, 'exercisePlan'),
              ),
            );
          }
        }
      },
      loading: () {
        hasExercise = true;
        tasks.add(
          _taskRow(
            context,
            AppModuleVisuals.exercise.icon,
            '运动',
            trailing: '正在加载运动计划',
            status: 'pending',
            iconColor: exIconColor,
            iconBg: exIconBg,
            iconGradient: AppModuleVisuals.exercise.gradient,
            onTap: () => pushRoute(ref, 'exercisePlan'),
          ),
        );
      },
      error: (_, _) {
        hasExercise = true;
        tasks.add(
          _taskRow(
            context,
            AppModuleVisuals.exercise.icon,
            '运动',
            trailing: '运动计划加载失败',
            status: 'overdue',
            iconColor: exIconColor,
            iconBg: exIconBg,
            iconGradient: AppModuleVisuals.exercise.gradient,
            onTap: () => pushRoute(ref, 'exercisePlan'),
          ),
        );
      },
    );
    if (!hasExercise) {
      tasks.add(
        _taskRow(
          context,
          AppModuleVisuals.exercise.icon,
          '运动',
          trailing: '暂无今日运动计划',
          status: 'pending',
          iconColor: exIconColor,
          iconBg: exIconBg,
          iconGradient: AppModuleVisuals.exercise.gradient,
          onTap: () => pushRoute(ref, 'exercisePlan'),
        ),
      );
    }

    // ── 3. 用药打卡 ──
    // 漏服时突出提醒；未到服药时间时也保留一行轻提示，避免今日健康缺少用药状态。
    final medIconColor = AppModuleVisuals.medication.color;
    final medIconBg = AppModuleVisuals.medication.lightColor;
    reminders.whenOrNull(
      data: (meds) {
        final overdueMeds = meds
            .where((m) => m['status'] == 'overdue')
            .toList();
        if (overdueMeds.isEmpty) {
          tasks.add(
            _taskRow(
              context,
              AppModuleVisuals.medication.icon,
              '用药',
              trailing: meds.isEmpty ? '暂无用药安排' : '暂时不用吃药',
              status: 'done',
              iconColor: medIconColor,
              iconBg: medIconBg,
              iconGradient: AppModuleVisuals.medication.gradient,
              onTap: () => pushRoute(ref, 'medCheckIn'),
            ),
          );
          return;
        }

        // 按过期时长排序——先把最严重的放前面
        final now = DateTime.now();
        final withDelta = overdueMeds.map((m) {
          final timeStr = m['scheduledTime']?.toString() ?? '';
          final parts = timeStr.split(':');
          DateTime? scheduled;
          if (parts.length >= 2) {
            final h = int.tryParse(parts[0]);
            final mn = int.tryParse(parts[1]);
            if (h != null && mn != null) {
              scheduled = DateTime(now.year, now.month, now.day, h, mn);
            }
          }
          final overdueHours = scheduled == null
              ? 0
              : now.difference(scheduled).inMinutes / 60.0;
          return (m, overdueHours);
        }).toList()..sort((a, b) => b.$2.compareTo(a.$2));

        // 取最严重那一项作为代表，其他用"等"省略
        final first = withDelta.first;
        final firstName = first.$1['name']?.toString() ?? '药品';
        final firstTime = first.$1['scheduledTime']?.toString() ?? '';
        final firstHours = first.$2;

        // 过期 < 1h 提醒服药；1-4h 可补服（红色）；>4h 已错过窗口（灰色提示但不强警告）
        final String trailing;
        final String status;
        if (firstHours < 1) {
          trailing = '$firstTime 该服药了';
          status = 'pending';
        } else if (firstHours < 4) {
          trailing = '$firstTime 已漏服 ${firstHours.toStringAsFixed(0)} 小时，可补服';
          status = 'overdue';
        } else {
          trailing = '$firstTime 已错过，请等下次按时服用';
          status = 'overdue';
        }

        final title = overdueMeds.length == 1
            ? firstName
            : '$firstName 等 ${overdueMeds.length} 种';

        tasks.add(
          _taskRow(
            context,
            AppModuleVisuals.medication.icon,
            title,
            trailing: trailing,
            status: status,
            iconColor: medIconColor,
            iconBg: medIconBg,
            iconGradient: AppModuleVisuals.medication.gradient,
            onTap: () => pushRoute(ref, 'medCheckIn'),
          ),
        );
      },
    );

    return Container(
      margin: const EdgeInsets.only(bottom: 12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(28),
        boxShadow: AppColors.cardShadow,
      ),
      clipBehavior: Clip.antiAlias,
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Container(
            width: double.infinity,
            padding: const EdgeInsets.fromLTRB(16, 13, 16, 11),
            decoration: const BoxDecoration(
              gradient: LinearGradient(
                begin: Alignment.centerLeft,
                end: Alignment.centerRight,
                colors: [Color(0xFFE0C3FC), Color(0xFF8EC5FC)],
              ),
              borderRadius: BorderRadius.vertical(top: Radius.circular(28)),
            ),
            child: Row(
              children: [
                const Text(
                  '今日健康',
                  style: TextStyle(
                    fontSize: 16,
                    fontWeight: FontWeight.w600,
                    color: AppColors.textPrimary,
                    height: 1.15,
                  ),
                ),
                const Spacer(),
                Text(
                  '${now.month}月${now.day}日',
                  style: const TextStyle(
                    fontSize: 13,
                    color: AppColors.textSecondary,
                  ),
                ),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.fromLTRB(14, 5, 14, 7),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                if (tasks.isEmpty)
                  _taskRow(
                    context,
                    LucideIcons.circleCheck,
                    '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,
    LinearGradient? iconGradient,
  }) {
    final colors = {
      'done': AppTheme.success,
      'warning': const Color(0xFFE8562A),
      'pending': AppColors.textHint,
      'overdue': AppTheme.error,
    };
    final icons = {
      'done': LucideIcons.circleCheck,
      'warning': LucideIcons.triangleAlert,
      'pending': LucideIcons.circle,
      'overdue': LucideIcons.circleAlert,
    };
    final ic = iconColor ?? AppTheme.primary;
    final ibg = iconBg ?? AppTheme.primaryLight;
    final textColor = switch (status) {
      'overdue' => AppColors.error,
      'warning' => const Color(0xFFE8562A),
      _ => AppColors.textPrimary,
    };
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 1),
      child: Material(
        color: Colors.transparent,
        child: InkWell(
          onTap: onTap,
          borderRadius: AppRadius.smBorder,
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 2, vertical: 7),
            child: Row(
              crossAxisAlignment: CrossAxisAlignment.center,
              children: [
                Container(
                  width: 32,
                  height: 32,
                  decoration: BoxDecoration(
                    color: iconGradient == null ? ibg : null,
                    gradient: iconGradient,
                    borderRadius: AppRadius.smBorder,
                  ),
                  child: Icon(
                    icon,
                    size: 18,
                    color: iconGradient == null ? ic : Colors.white,
                  ),
                ),
                const SizedBox(width: 10),
                Expanded(
                  child: Text(
                    trailing ?? label,
                    maxLines: 1,
                    overflow: TextOverflow.ellipsis,
                    style: TextStyle(
                      fontSize: 15,
                      fontWeight: status == 'overdue' || status == 'warning'
                          ? FontWeight.w600
                          : FontWeight.w500,
                      color: textColor,
                    ),
                  ),
                ),
                Icon(
                  icons[status] ?? Icons.circle_outlined,
                  size: 20,
                  color: colors[status] ?? Colors.grey,
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  bool _recordIsAbnormal(dynamic record, {required bool Function() fallback}) {
    if (record is Map) {
      final raw =
          record['isAbnormal'] ?? record['IsAbnormal'] ?? record['abnormal'];
      if (raw is bool) return raw;
      if (raw is String) {
        final normalized = raw.toLowerCase();
        if (normalized == 'true') return true;
        if (normalized == 'false') return false;
      }
      if (raw is num) return raw != 0;
    }
    return fallback();
  }

  double? _numValue(dynamic value) {
    if (value is num) return value.toDouble();
    if (value is String) return double.tryParse(value);
    return null;
  }
}

class _AgentMark extends StatelessWidget {
  final IconData icon;
  final _AgentColors colors;
  const _AgentMark({required this.icon, required this.colors});

  @override
  Widget build(BuildContext context) {
    return Container(
      width: 64,
      height: 64,
      decoration: BoxDecoration(
        gradient: LinearGradient(
          colors: colors.gradient,
          begin: colors.verticalGradient
              ? Alignment.topCenter
              : Alignment.topLeft,
          end: colors.verticalGradient
              ? Alignment.bottomCenter
              : Alignment.bottomRight,
        ),
        borderRadius: BorderRadius.circular(20),
        boxShadow: [
          BoxShadow(
            color: colors.accent.withValues(alpha: 0.18),
            blurRadius: 18,
            offset: const Offset(0, 8),
          ),
        ],
      ),
      child: Center(child: Icon(icon, size: 32, color: colors.iconColor)),
    );
  }
}

typedef _AgentIcon = IconData;

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

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 _ConfirmField {
  final IconData? icon;
  final String label;
  final String value;
  final String unit;
  final bool abnormal;
  final Color? color;

  const _ConfirmField({
    this.icon,
    required this.label,
    required this.value,
    this.unit = '',
    this.abnormal = false,
    this.color,
  });
}

final _agentActions = <ActiveAgent, List<_AgentAction>>{
  ActiveAgent.health: [
    _AgentAction(
      label: '健康概览',
      icon: AppModuleVisuals.healthOverviewIcon,
      isWide: true,
      route: 'trend',
    ),
    _AgentAction(
      label: '蓝牙录入',
      icon: Icons.bluetooth,
      isWide: true,
      route: 'devices',
    ),
  ],
  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: AppModuleVisuals.medication.icon,
      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,
      action: 'openReportUpload',
    ),
    _AgentAction(
      label: '查看报告',
      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)];
}