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

/// 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: const Color(0xFFEDEBFF),
                borderRadius: BorderRadius.circular(40),
              ),
              child: const Icon(Icons.health_and_safety, size: 40, color: Color(0xFF635BFF)),
            ),
            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: 14, color: Color(0xFF9E9E9E))),
          ],
        ),
      );
    }

    return ListView.builder(
      controller: scrollCtrl,
      reverse: true,
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
      itemCount: messages.length,
      itemBuilder: (context, index) {
        final msg = messages[messages.length - 1 - index];
        return _buildMessageContent(context, ref, msg, chatState);
      },
    );
  }

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

  Widget _buildMessageContent(BuildContext context, WidgetRef ref, ChatMessage msg, ChatState chatState) {
    final isUser = msg.isUser;

    if (!isUser && chatState.isStreaming && msg.content.isEmpty) {
      return _buildThinkingBubble(context, chatState.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, msg);
      case MessageType.medicationConfirm:
        return _buildMedicationConfirmCard(context, msg);
      case MessageType.dietAnalysis:
        return _buildDietAnalysisCard(context, msg);
      case MessageType.reportAnalysis:
        return _buildReportAnalysisCard(context, msg);
      case MessageType.quickOptions:
        return _buildQuickOptionsCard(context, msg);
      default:
        return _buildTextBubble(context, msg);
    }
  }

  // ═══════════════════════════════════════════════════════════
  // 1. AgentWelcomeCard — 智能体欢迎卡片
  // ═══════════════════════════════════════════════════════════

  Widget _buildAgentWelcomeCard(BuildContext context, WidgetRef ref, ChatMessage msg, ActiveAgent agent) {
    final info = _agentInfo(agent);
    final actions = agent.actions;
    final screenWidth = MediaQuery.of(context).size.width;

    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        constraints: BoxConstraints(maxWidth: screenWidth * 0.92),
        decoration: BoxDecoration(
          color: const Color(0xFFFFFFFF),
          borderRadius: BorderRadius.circular(20),
          boxShadow: [
            BoxShadow(color: const Color(0xFF635BFF).withAlpha(20), blurRadius: 16, offset: const Offset(0, 4)),
          ],
        ),
        clipBehavior: Clip.antiAlias,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // ── 紫色渐变头部 ──
            Container(
              width: double.infinity,
              padding: const EdgeInsets.fromLTRB(20, 24, 16, 20),
              decoration: const BoxDecoration(
                gradient: LinearGradient(
                  colors: [Color(0xFF7C73FF), Color(0xFF635BFF), Color(0xFF5241D9)],
                  begin: Alignment.topLeft,
                  end: Alignment.bottomRight,
                ),
              ),
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Container(
                    width: 48,
                    height: 48,
                    decoration: BoxDecoration(
                      color: Colors.white.withAlpha(30),
                      borderRadius: BorderRadius.circular(14),
                    ),
                    child: Icon(info.$1, size: 26, color: Colors.white),
                  ),
                  const SizedBox(width: 14),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(info.$2, style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w700, color: Colors.white)),
                        const SizedBox(height: 4),
                        Container(
                          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 3),
                          decoration: BoxDecoration(
                            color: Colors.white.withAlpha(25),
                            borderRadius: BorderRadius.circular(10),
                          ),
                          child: Text(info.$3, style: const TextStyle(fontSize: 12, color: Color(0xFFE0DDFF))),
                        ),
                      ],
                    ),
                  ),
                  GestureDetector(
                    onTap: () {},
                    child: Container(
                      width: 28,
                      height: 28,
                      decoration: BoxDecoration(
                        color: Colors.white.withAlpha(20),
                        shape: BoxShape.circle,
                      ),
                      child: const Icon(Icons.close, size: 16, color: Color(0xFFE0DDFF)),
                    ),
                  ),
                ],
              ),
            ),

            // ── 快捷操作按钮网格 ──
            Padding(
              padding: const EdgeInsets.fromLTRB(18, 18, 18, 4),
              child: Wrap(
                spacing: 10,
                runSpacing: 10,
                children: agent == ActiveAgent.consultation
                    ? _buildDoctorCards(screenWidth, ref)
                    : actions.map((a) => _agentActionBtn(a, screenWidth, context, ref)).toList(),
              ),
            ),

            // ── 底部提示 ──
            Padding(
              padding: const EdgeInsets.fromLTRB(0, 12, 0, 18),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Container(width: 24, height: 1, color: const Color(0xFFD0CCED)),
                  const Padding(
                    padding: EdgeInsets.symmetric(horizontal: 10),
                    child: Text('或直接对我说...', style: TextStyle(fontSize: 13, color: Color(0xFF9E94CF))),
                  ),
                  Container(width: 24, height: 1, color: const Color(0xFFD0CCED)),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _agentActionBtn(_AgentAction a, double screenWidth, BuildContext context, WidgetRef ref) {
    return InkWell(
      onTap: () {
        if (a.route != null) {
          if (a.route == 'camera' || a.route == 'gallery') {
            ref.read(cameraActionProvider.notifier).trigger(a.route!);
          } else {
            pushRoute(ref, a.route!);
          }
        } else if (a.label == '服药打卡') {
          _medicationCheckIn(ref, context);
        }
      },      borderRadius: BorderRadius.circular(14),
      child: Container(
        width: ((screenWidth - 72) / (a.isWide ? 2 : 3)) - 10,
        padding: const EdgeInsets.symmetric(vertical: 13, horizontal: 8),
        decoration: BoxDecoration(
          color: const Color(0xFFF7F5FF),
          borderRadius: BorderRadius.circular(14),
          border: Border.all(color: const Color(0xFFEBE8FF), width: 1),
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Container(
              width: 38,
              height: 38,
              decoration: BoxDecoration(
                color: const Color(0xFFEDEAFF),
                borderRadius: BorderRadius.circular(11),
              ),
              child: Icon(a.icon, size: 20, color: const Color(0xFF635BFF)),
            ),
            const SizedBox(height: 7),
            Text(a.label, style: const TextStyle(fontSize: 12, fontWeight: FontWeight.w500, color: Color(0xFF333333))),
          ],
        ),
      ),
    );
  }

  List<Widget> _buildDoctorCards(double screenWidth, WidgetRef ref) {
    const doctors = [
      {'name': '张医生', 'title': '主任医师', 'dept': '心内科', 'desc': '冠心病、高血压术后管理', 'id': 'doc_1'},
      {'name': '李医生', 'title': '副主任医师', 'dept': '内分泌科', 'desc': '糖尿病、甲状腺疾病管理', 'id': 'doc_2'},
      {'name': '王医生', 'title': '主治医师', 'dept': '营养科', 'desc': '术后营养指导、饮食方案制定', 'id': 'doc_3'},
    ];
    return doctors.map((d) => _doctorCard(d, screenWidth, ref)).toList();
  }

  Widget _doctorCard(Map<String, String> doc, double screenWidth, WidgetRef ref) {
    return InkWell(
      onTap: () => pushRoute(ref, 'consultation', params: {'id': doc['id']!}),
      borderRadius: BorderRadius.circular(14),
      child: Container(
        width: screenWidth * 0.38,
        padding: const EdgeInsets.all(12),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(14),
          border: Border.all(color: const Color(0xFFEDEBFF)),
        ),
        child: Column(children: [
          CircleAvatar(
            radius: 24,
            backgroundColor: const Color(0xFFEDEBFF),
            child: Text(doc['name']![0], style: const TextStyle(fontSize: 20, color: Color(0xFF635BFF))),
          ),
          const SizedBox(height: 8),
          Text(doc['name']!, style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w600)),
          Text(doc['title']!, style: const TextStyle(fontSize: 11, color: Color(0xFF999999))),
          const SizedBox(height: 2),
          Container(
            padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
            decoration: BoxDecoration(
              color: const Color(0xFFF5F3FF),
              borderRadius: BorderRadius.circular(4),
            ),
            child: Text(doc['dept']!, style: const TextStyle(fontSize: 10, color: Color(0xFF635BFF))),
          ),
          const SizedBox(height: 6),
          Text(
            doc['desc']!,
            style: const TextStyle(fontSize: 10, color: Color(0xFF888888), height: 1.3),
            maxLines: 2,
            overflow: TextOverflow.ellipsis,
          ),
        ]),
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 2. DataConfirmCard — 增强版数据确认卡片
  // ═══════════════════════════════════════════════════════════

  Widget _buildDataConfirmCard(BuildContext context, ChatMessage msg) {
    final meta = msg.metadata;
    final metricType = meta?['type'] as String? ?? '';
    final value = meta?['value'] as String? ?? '';
    final abnormal = meta?['abnormal'] as bool? ?? false;
    final recordTime = meta?['recordTime'] as String? ?? '';
    final unit = meta?['unit'] as String? ?? _getMetricUnit(metricType);
    final trend = meta?['trend'] as List? ?? [0.6, 0.8, 0.5];

    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.88),
        decoration: BoxDecoration(
          color: const Color(0xFFFFFFFF),
          borderRadius: BorderRadius.circular(20),
          boxShadow: [BoxShadow(color: const Color(0xFF635BFF).withAlpha(15), blurRadius: 14, offset: const Offset(0, 4))],
        ),
        clipBehavior: Clip.antiAlias,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // ── 绿色勾选条 ──
            Container(
              width: double.infinity,
              padding: const EdgeInsets.symmetric(vertical: 10),
              decoration: const BoxDecoration(
                gradient: LinearGradient(colors: [Color(0xFF4CAF50), Color(0xFF43A047)]),
              ),
              child: const Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Icon(Icons.check_circle, size: 18, color: Colors.white),
                  SizedBox(width: 6),
                  Text('✓ 数据已记录', style: TextStyle(fontSize: 14, fontWeight: FontWeight.w600, color: Colors.white)),
                ],
              ),
            ),

            Padding(
              padding: const EdgeInsets.all(18),
              child: Column(
                children: [
                  // 记录时间
                  Align(
                    alignment: Alignment.centerLeft,
                    child: Text(recordTime.isNotEmpty ? recordTime : _formatTime(msg.createdAt), style: const TextStyle(fontSize: 12, color: Color(0xFF9E9E9E))),
                  ),
                  const SizedBox(height: 14),

                  // 主要指标区域
                  Container(
                    padding: const EdgeInsets.all(18),
                    decoration: BoxDecoration(
                      color: const Color(0xFFF9F8FF),
                      borderRadius: BorderRadius.circular(16),
                    ),
                    child: Row(
                      children: [
                        Container(
                          width: 52,
                          height: 52,
                          decoration: BoxDecoration(
                            color: const Color(0xFFEDEAFF),
                            borderRadius: BorderRadius.circular(14),
                          ),
                          child: Center(child: Text(_getMetricIcon(metricType), style: const TextStyle(fontSize: 26))),
                        ),
                        const SizedBox(width: 14),
                        Expanded(
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Text(_getMetricName(metricType), style: const TextStyle(fontSize: 13, color: Color(0xFF888888))),
                              const SizedBox(height: 4),
                              RichText(
                                text: TextSpan(
                                  children: [
                                    TextSpan(text: value, style: TextStyle(fontSize: 28, fontWeight: FontWeight.w800, color: abnormal ? const Color(0xFFE53935) : const Color(0xFF1A1A2E))),
                                    TextSpan(text: ' $unit', style: TextStyle(fontSize: 14, color: abnormal ? const Color(0xFFE53970) : const Color(0xFF999999))),
                                  ],
                                ),
                              ),
                            ],
                          ),
                        ),
                      ],
                    ),
                  ),

                  // 异常警告条
                  if (abnormal) ...[
                    const SizedBox(height: 12),
                    Container(
                      width: double.infinity,
                      padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
                      decoration: BoxDecoration(
                        color: const Color(0xFFFFF3F0),
                        borderRadius: BorderRadius.circular(10),
                        border: Border.all(color: const Color(0xFFFFDAD4), width: 1),
                      ),
                      child: const Row(
                        children: [
                          Icon(Icons.warning_amber_rounded, size: 18, color: Color(0xFFE53935)),
                          SizedBox(width: 8),
                          Expanded(child: Text('⚠️ 数值偏高，建议关注', style: TextStyle(fontSize: 13, color: Color(0xFFE53935), fontWeight: FontWeight.w500))),
                        ],
                      ),
                    ),
                  ],

                  // 迷你趋势图（最近3次）
                  const SizedBox(height: 16),
                  Row(
                    children: [
                      const Text('近期趋势', style: TextStyle(fontSize: 12, color: Color(0xFFAAAAAA))),
                      const Spacer(),
                      const Text('最近3次', style: TextStyle(fontSize: 11, color: Color(0xFFCCCCCC))),
                    ],
                  ),
                  const SizedBox(height: 8),
                  SizedBox(
                    height: 36,
                    child: Row(
                      crossAxisAlignment: CrossAxisAlignment.end,
                      children: trend.asMap().entries.map((e) {
                        final h = (e.value * 32).clamp(6.0, 32.0);
                        return Padding(
                          padding: EdgeInsets.only(right: e.key < trend.length - 1 ? 10 : 0),
                          child: Column(
                            mainAxisAlignment: MainAxisAlignment.end,
                            mainAxisSize: MainAxisSize.min,
                            children: [
                              Container(
                                width: 22,
                                height: h,
                                decoration: BoxDecoration(
                                  color: e.key == trend.length - 1 ? const Color(0xFF635BFF) : const Color(0xFFD5D0FF),
                                  borderRadius: BorderRadius.circular(5),
                                ),
                              ),
                              const SizedBox(height: 4),
                              Text('${e.key + 1}', style: const TextStyle(fontSize: 9, color: Color(0xFFBBBBBB))),
                            ],
                          ),
                        );
                      }).toList(),
                    ),
                  ),

                  // 底部操作按钮
                  const SizedBox(height: 18),
                  Row(children: [
                    Expanded(child: _cardOutlineBtn('编辑', Icons.edit_outlined)),
                    const SizedBox(width: 8),
                    Expanded(child: _cardFilledBtn('确认', Icons.check)),
                    const SizedBox(width: 8),
                    Expanded(child: _cardOutlineBtn('查看详情', Icons.trending_up_outlined)),
                  ]),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 3. MedicationConfirmCard — 增强版用药确认卡片
  // ═══════════════════════════════════════════════════════════

  Widget _buildMedicationConfirmCard(BuildContext context, ChatMessage msg) {
    final meta = msg.metadata;
    final name = meta?['name'] as String? ?? '';
    final dosage = meta?['dosage'] as String? ?? '';
    final time = meta?['time'] as String? ?? '';
    final frequency = meta?['frequency'] as String? ?? '';
    final remaining = meta?['remaining'] as double? ?? 0.65;

    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.88),
        decoration: BoxDecoration(
          color: const Color(0xFFFFFFFF),
          borderRadius: BorderRadius.circular(20),
          boxShadow: [BoxShadow(color: const Color(0xFF635BFF).withAlpha(15), blurRadius: 14, offset: const Offset(0, 4))],
        ),
        clipBehavior: Clip.antiAlias,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // ── 药品头部 ──
            Container(
              width: double.infinity,
              padding: const EdgeInsets.fromLTRB(18, 20, 18, 16),
              decoration: const BoxDecoration(
                gradient: LinearGradient(colors: [Color(0xFFE8F0FE), Color(0xFFF5F3FF)]),
              ),
              child: Row(
                children: [
                  Container(
                    width: 46,
                    height: 46,
                    decoration: BoxDecoration(
                      color: const Color(0xFFFFF3E0),
                      borderRadius: BorderRadius.circular(13),
                    ),
                    child: const Center(child: Text('💊', style: TextStyle(fontSize: 24))),
                  ),
                  const SizedBox(width: 14),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(name, style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w700, color: Color(0xFF1A1A2E))),
                        if (dosage.isNotEmpty) ...[
                          const SizedBox(height: 3),
                          Text(dosage, style: const TextStyle(fontSize: 13, color: Color(0xFF777777))),
                        ],
                      ],
                    ),
                  ),
                ],
              ),
            ),

            Padding(
              padding: const EdgeInsets.fromLTRB(18, 16, 18, 6),
              child: Column(
                children: [
                  // 服药时间 & 频率
                  _medInfoRow(Icons.schedule_outlined, time.isNotEmpty ? '服药时间：$time' : '待设置'),
                  if (frequency.isNotEmpty) _medInfoRow(Icons.repeat, '频率：$frequency'),

                  // 剩余药量进度条
                  const SizedBox(height: 14),
                  Row(
                    children: [
                      const Text('剩余药量', style: TextStyle(fontSize: 13, color: Color(0xFF666666))),
                      const Spacer(),
                      Text('${(remaining * 100).toInt()}%', style: const TextStyle(fontSize: 13, fontWeight: FontWeight.w600, color: Color(0xFF635BFF))),
                    ],
                  ),
                  const SizedBox(height: 8),
                  ClipRRect(
                    borderRadius: BorderRadius.circular(6),
                    child: LinearProgressIndicator(
                      value: remaining,
                      minHeight: 8,
                      backgroundColor: const Color(0xFFEFEDFF),
                      valueColor: const AlwaysStoppedAnimation<Color>(Color(0xFF635BFF)),
                    ),
                  ),

                  // 操作按钮
                  const SizedBox(height: 18),
                  Row(children: [
                    Expanded(child: _cardFilledBtn('确认服药', Icons.check_circle_outline)),
                    const SizedBox(width: 8),
                    Expanded(child: _cardOutlineBtn('跳过', Icons.skip_next)),
                    const SizedBox(width: 8),
                    Expanded(child: _cardOutlineBtn('设置提醒', Icons.notifications_none_outlined)),
                  ]),
                  const SizedBox(height: 8),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _medInfoRow(IconData icon, String text) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 10),
      child: Row(
        children: [
          Icon(icon, size: 17, color: const Color(0xFF888888)),
          const SizedBox(width: 8),
          Text(text, style: const TextStyle(fontSize: 13, color: Color(0xFF444444))),
        ],
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 4. DietAnalysisCard — 增强版饮食分析卡片
  // ═══════════════════════════════════════════════════════════

  Widget _buildDietAnalysisCard(BuildContext context, ChatMessage msg) {
    final meta = msg.metadata;
    final foods = meta?['foods'] as List? ?? [];
    final totalCalories = meta?['totalCalories'] as int? ?? 0;
    final advice = meta?['advice'] as String? ?? '饮食均衡，多吃蔬菜水果，减少高油高糖食物摄入。';

    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.88),
        decoration: BoxDecoration(
          color: const Color(0xFFFFFFFF),
          borderRadius: BorderRadius.circular(20),
          boxShadow: [BoxShadow(color: const Color(0xFF635BFF).withAlpha(15), blurRadius: 14, offset: const Offset(0, 4))],
        ),
        clipBehavior: Clip.antiAlias,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // ── 头部 ──
            Container(
              width: double.infinity,
              padding: const EdgeInsets.symmetric(vertical: 12),
              decoration: const BoxDecoration(gradient: LinearGradient(colors: [Color(0xFFFFF8E1), Color(0xFFFFF3E0)])),
              child: const Row(mainAxisAlignment: MainAxisAlignment.center, children: [
                Text('🍽️ ', style: TextStyle(fontSize: 18)),
                Text('饮食分析结果', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w700, color: Color(0xFF1A1A2E))),
              ]),
            ),
            Padding(
              padding: const EdgeInsets.all(16),
              child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
                // ── 总热量（仅 >0 时显示） ──
                if (totalCalories > 0) ...[
                  Center(child: Column(children: [
                    Text('$totalCalories', style: const TextStyle(fontSize: 36, fontWeight: FontWeight.w800, color: Color(0xFFFF8F00))),
                    const Text('千卡 (kcal)', style: TextStyle(fontSize: 12, color: Color(0xFFAAAAAA))),
                  ])),
                  const SizedBox(height: 16),
                ],

                // ── 识别食物列表 ──
                if (foods.isNotEmpty) ...[
                  const Text('识别结果', style: TextStyle(fontSize: 15, fontWeight: FontWeight.w600, color: Color(0xFF1A1A1A))),
                  const SizedBox(height: 10),
                  ...foods.map((food) {
                    final f = food is Map ? food : <String, dynamic>{};
                    final name = f['name'] as String? ?? '';
                    final calories = f['calories'] as num? ?? 0;
                    final portion = f['portion'] as String?;
                    final nutrients = f['nutrients'] as String?;

                    return Container(
                      margin: const EdgeInsets.only(bottom: 8),
                      padding: const EdgeInsets.all(10),
                      decoration: BoxDecoration(color: const Color(0xFFFAFAFA), borderRadius: BorderRadius.circular(10), border: Border.all(color: const Color(0xFFF0F0F0))),
                      child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
                        Row(children: [
                          Expanded(child: Text(name, style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w500, color: Color(0xFF1A1A1A)))),
                          if (calories > 0) Text('${calories is int ? calories : calories.toInt()} kcal', style: const TextStyle(fontSize: 13, color: Color(0xFF888888))),
                        ]),
                        if (portion != null && portion.isNotEmpty) Padding(padding: const EdgeInsets.only(top: 4), child: Text(portion, style: TextStyle(fontSize: 12, color: Colors.grey[500]))),
                        if (nutrients != null && nutrients.isNotEmpty) Padding(padding: const EdgeInsets.only(top: 2), child: Text(nutrients, style: TextStyle(fontSize: 11, color: Colors.grey[500]))),
                      ]),
                    );
                  }),
                ] else ...[
                  Container(
                    padding: const EdgeInsets.all(20),
                    decoration: BoxDecoration(color: const Color(0xFFF5F3FF), borderRadius: BorderRadius.circular(12)),
                    child: const Row(mainAxisAlignment: MainAxisAlignment.center, children: [
                      Icon(Icons.hourglass_empty, size: 18, color: Color(0xFF999999)),
                      SizedBox(width: 8),
                      Text('正在分析食物中...', style: TextStyle(fontSize: 14, color: Color(0xFF999999))),
                    ]),
                  ),
                ],

                // ── AI 建议 ──
                const SizedBox(height: 14),
                const Text('AI 建议', style: TextStyle(fontSize: 14, fontWeight: FontWeight.w600, color: Color(0xFF1A1A1A))),
                const SizedBox(height: 6),
                Container(
                  padding: const EdgeInsets.all(12),
                  decoration: BoxDecoration(color: const Color(0xFFF5F3FF), borderRadius: BorderRadius.circular(10)),
                  child: Text(advice, style: const TextStyle(fontSize: 13, height: 1.6, color: Color(0xFF555555))),
                ),
              ]),
            ),
          ],
        ),
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 5. ReportAnalysisCard — 增强版报告分析卡片
  // ═══════════════════════════════════════════════════════════

  Widget _buildReportAnalysisCard(BuildContext context, ChatMessage msg) {
    final meta = msg.metadata;
    final reportType = meta?['type'] as String? ?? '体检报告';
    final reportDate = meta?['date'] as String? ?? '';
    final indicators = meta?['indicators'] as List? ?? [];
    final summary = meta?['summary'] as String? ?? '';

    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.88),
        decoration: BoxDecoration(
          color: const Color(0xFFFFFFFF),
          borderRadius: BorderRadius.circular(20),
          boxShadow: [BoxShadow(color: const Color(0xFF635BFF).withAlpha(15), blurRadius: 14, offset: const Offset(0, 4))],
        ),
        clipBehavior: Clip.antiAlias,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // ── 报告头部 ──
            Container(
              width: double.infinity,
              padding: const EdgeInsets.fromLTRB(18, 18, 18, 14),
              decoration: const BoxDecoration(
                gradient: LinearGradient(colors: [Color(0xFFE8EAF6), Color(0xFFEDE7F6)]),
              ),
              child: Row(
                children: [
                  Container(
                    width: 40,
                    height: 40,
                    decoration: BoxDecoration(
                      color: const Color(0xFFC5CAE9),
                      borderRadius: BorderRadius.circular(10),
                    ),
                    child: const Icon(Icons.description_outlined, size: 20, color: Color(0xFF3F51B5)),
                  ),
                  const SizedBox(width: 12),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(reportType, style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w700, color: Color(0xFF1A1A2E))),
                        if (reportDate.isNotEmpty)
                          Text(reportDate, style: const TextStyle(fontSize: 12, color: Color(0xFF888888))),
                      ],
                    ),
                  ),
                ],
              ),
            ),

            Padding(
              padding: const EdgeInsets.all(16),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  // 指标表格
                  Container(
                    decoration: BoxDecoration(
                      color: const Color(0xFFFAFAFC),
                      borderRadius: BorderRadius.circular(12),
                      border: Border.all(color: const Color(0xFFEEEEEE), width: 1),
                    ),
                    child: Column(
                      children: [
                        // 表头
                        Container(
                          padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
                          decoration: const BoxDecoration(
                            color: Color(0xFFF5F4FA),
                            borderRadius: BorderRadius.vertical(top: Radius.circular(12)),
                          ),
                          child: const Row(
                            children: [
                              Expanded(flex: 2, child: Text('指标名称', style: TextStyle(fontSize: 11, fontWeight: FontWeight.w600, color: Color(0xFF666666)))),
                              Expanded(flex: 1, child: Text('数值', style: TextStyle(fontSize: 11, fontWeight: FontWeight.w600, color: Color(0xFF666666)), textAlign: TextAlign.center)),
                              Expanded(flex: 1, child: Text('状态', style: TextStyle(fontSize: 11, fontWeight: FontWeight.w600, color: Color(0xFF666666)), textAlign: TextAlign.center)),
                            ],
                          ),
                        ),
                        // 数据行
                        ...indicators.map((ind) {
                          final i = ind as Map? ?? {};
                          final name = i['name'] as String? ?? '';
                          final value = i['value'] as String? ?? '';
                          final status = i['status'] as String? ?? 'normal';
                          final refRange = i['refRange'] as String? ?? '';
                          final isAbnormal = status != 'normal';
                          Color sc;
                          switch (status) {
                            case 'high': sc = const Color(0xFFE53935); break;
                            case 'low': sc = const Color(0xFFF9A825); break;
                            default: sc = const Color(0xFF43A047);
                          }
                          return Container(
                            padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
                            decoration: BoxDecoration(
                              color: isAbnormal ? const Color(0xFFFFF8F5) : Colors.transparent,
                              border: Border(
                                bottom: BorderSide(color: const Color(0xFFF0F0F0), width: 0.5),
                              ),
                            ),
                            child: Row(
                              children: [
                                Expanded(
                                  flex: 2,
                                  child: Column(
                                    crossAxisAlignment: CrossAxisAlignment.start,
                                    children: [
                                      Text(name, style: TextStyle(fontSize: 13, color: isAbnormal ? const Color(0xFFE53935) : const Color(0xFF333333), fontWeight: isAbnormal ? FontWeight.w600 : FontWeight.normal)),
                                      if (refRange.isNotEmpty) Text('参考：$refRange', style: const TextStyle(fontSize: 10, color: Color(0xFFAAAAAA))),
                                    ],
                                  ),
                                ),
                                Expanded(flex: 1, child: Text(value, textAlign: TextAlign.center, style: TextStyle(fontSize: 13, fontWeight: FontWeight.w600, color: sc))),
                                Expanded(
                                  flex: 1,
                                  child: Center(
                                    child: Container(
                                      width: 8,
                                      height: 8,
                                      decoration: BoxDecoration(shape: BoxShape.circle, color: sc),
                                    ),
                                  ),
                                ),
                              ],
                            ),
                          );
                        }),
                      ],
                    ),
                  ),

                  // AI 解读摘要
                  if (summary.isNotEmpty) ...[
                    const SizedBox(height: 14),
                    Container(
                      width: double.infinity,
                      padding: const EdgeInsets.all(14),
                      decoration: BoxDecoration(
                        color: const Color(0xFFF3EFFF),
                        borderRadius: BorderRadius.circular(12),
                        border: Border.all(color: const Color(0xFFDDD8FF), width: 0.8),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          const Row(
                            children: [
                              Icon(Icons.auto_awesome, size: 16, color: Color(0xFF635BFF)),
                              SizedBox(width: 6),
                              Text('AI 解读摘要', style: TextStyle(fontSize: 13, fontWeight: FontWeight.w600, color: Color(0xFF635BFF))),
                            ],
                          ),
                          const SizedBox(height: 8),
                          Text(summary, style: const TextStyle(fontSize: 13, color: Color(0xFF555555), height: 1.5)),
                        ],
                      ),
                    ),
                  ],

                  // 查看完整解读按钮
                  const SizedBox(height: 14),
                  SizedBox(
                    width: double.infinity,
                    child: _cardFilledBtn('查看完整解读', Icons.article_outlined),
                  ),
                  const SizedBox(height: 4),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 6. QuickOptionsCard — 优化样式
  // ═══════════════════════════════════════════════════════════

  Widget _buildQuickOptionsCard(BuildContext context, ChatMessage msg) {
    final meta = msg.metadata;
    final options = meta?['options'] as List? ?? [];

    return Align(
      alignment: Alignment.centerLeft,
      child: Container(
        margin: const EdgeInsets.only(bottom: 12),
        constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.88),
        decoration: BoxDecoration(
          color: const Color(0xFFFFFFFF),
          borderRadius: BorderRadius.circular(20),
          boxShadow: [BoxShadow(color: const Color(0xFF635BFF).withAlpha(15), blurRadius: 14, offset: const Offset(0, 4))],
        ),
        child: Padding(
          padding: const EdgeInsets.fromLTRB(18, 16, 18, 14),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Text(msg.content, style: const TextStyle(fontSize: 15, fontWeight: FontWeight.w500, color: Color(0xFF1A1A2E))),
              const SizedBox(height: 14),
              Wrap(spacing: 8, runSpacing: 8, children: options.map((opt) {
                final o = opt as Map? ?? {};
                return ElevatedButton(
                  onPressed: () {},
                  style: ElevatedButton.styleFrom(
                    backgroundColor: const Color(0xFFF5F3FF),
                    foregroundColor: const Color(0xFF635BFF),
                    elevation: 0,
                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
                    padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 11),
                  ),
                  child: Text(o['label'] as String? ?? '', style: const TextStyle(fontSize: 13, fontWeight: FontWeight.w500)),
                );
              }).toList()),
            ],
          ),
        ),
      ),
    );
  }

  // ═══════════════════════════════════════════════════════════
  // 公共组件：思考气泡 & 文本气泡
  // ═══════════════════════════════════════════════════════════

  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: const Color(0xFFFEFEFF),
          borderRadius: const BorderRadius.only(topLeft: Radius.circular(4), topRight: Radius.circular(20), bottomLeft: Radius.circular(20), bottomRight: Radius.circular(20)),
          border: Border.all(color: const Color(0xFFE8E6FF), width: 1.5),
          boxShadow: [BoxShadow(color: const Color(0xFF635BFF).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: const Color(0xFFEDEBFF),
                borderRadius: BorderRadius.circular(13),
              ),
              child: const CircularProgressIndicator(strokeWidth: 2.2, color: Color(0xFF635BFF)),
            ),
            const SizedBox(width: 10),
            Text(thinkingText?.isNotEmpty == true ? thinkingText! : '正在分析...', style: const TextStyle(fontSize: 14, color: Color(0xFF999999))),
          ],
        ),
      ),
    );
  }

  Widget _buildTextBubble(BuildContext context, ChatMessage msg) {
    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 ? const Color(0xFF635BFF) : const Color(0xFFFEFEFF),
          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: isUser ? null : Border.all(color: const Color(0xFFE8E6FF), width: 1.5),
          boxShadow: isUser ? [] : [BoxShadow(color: const Color(0xFF635BFF).withAlpha(12), blurRadius: 10, offset: const Offset(0, 3))],
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            if (hasImage)
              Padding(
                padding: const EdgeInsets.only(bottom: 8),
                child: ClipRRect(
                  borderRadius: BorderRadius.circular(10),
                  child: imageUrl != null
                      ? Image.network(imageUrl, fit: BoxFit.cover, width: double.infinity, errorBuilder: (_, __, ___) => _buildLocalFallback(localPath))
                      : localPath != null
                          ? Image.file(File(localPath), fit: BoxFit.cover, width: double.infinity)
                          : null,
                ),
              ),
            if (isUser)
              Text(msg.content, style: const TextStyle(fontSize: 16, color: Colors.white, height: 1.4))
            else
              MarkdownBody(
                data: msg.content,
                selectable: true,
                styleSheet: MarkdownStyleSheet(
                  p: const TextStyle(fontSize: 16, color: Color(0xFF1A1A1A), height: 1.5),
                  h1: const TextStyle(fontSize: 18, fontWeight: FontWeight.w600, color: Color(0xFF1A1A1A)),
                  h2: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: Color(0xFF1A1A1A)),
                  code: const TextStyle(fontSize: 14, backgroundColor: Color(0xFFF5F3FF)),
                ),
              ),
            if (!isUser && msg.content.isNotEmpty)
              Padding(
                padding: const EdgeInsets.only(top: 10),
                child: Row(children: [
                  const CircleAvatar(radius: 10, backgroundColor: Color(0xFFEDEBFF), child: Icon(Icons.chat_bubble_outline, size: 14, color: Color(0xFF635BFF))),
                  const SizedBox(width: 6),
                  const Text('健康管家', style: TextStyle(fontSize: 12, color: Color(0xFF9E9E9E))),
                  const SizedBox(width: 4),
                  const Text('仅供参考', style: TextStyle(fontSize: 11, color: Color(0xFFCCCCCC))),
                ]),
              ),
          ],
        ),
      ),
    );
  }

  Widget _buildLocalFallback(String? localPath) {
    if (localPath != null) {
      final file = File(localPath);
      return Image.file(file, fit: BoxFit.cover, width: double.infinity);
    }
    return Container(
      height: 100,
      color: const Color(0xFFEEEEEE),
      child: const Center(child: Icon(Icons.broken_image, size: 40, color: Color(0xFFBDBDBD))),
    );
  }

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

  Widget _cardFilledBtn(String label, IconData icon) {
    return ElevatedButton(
      onPressed: () {},
      style: ElevatedButton.styleFrom(
        backgroundColor: const Color(0xFF635BFF),
        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: 16),
        const SizedBox(width: 5),
        Text(label, style: const TextStyle(fontSize: 12, fontWeight: FontWeight.w500)),
      ]),
    );
  }

  Widget _cardOutlineBtn(String label, IconData icon) {
    return OutlinedButton(
      onPressed: () {},
      style: OutlinedButton.styleFrom(
        foregroundColor: const Color(0xFF635BFF),
        side: const BorderSide(color: Color(0xFF635BFF), width: 1.2),
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
        padding: const EdgeInsets.symmetric(vertical: 11),
      ),
      child: Row(mainAxisAlignment: MainAxisAlignment.center, children: [
        Icon(icon, size: 15),
        const SizedBox(width: 4),
        Text(label, style: const TextStyle(fontSize: 12, fontWeight: FontWeight.w500)),
      ]),
    );
  }

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

  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';
      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 '⚖️';
      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';
      default: return '健康指标';
    }
  }

  static void _medicationCheckIn(WidgetRef ref, BuildContext context) async {
    try {
      final service = ref.read(medicationServiceProvider);
      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: Color(0xFFFF9800)),
        );
        return;
      }
      for (final m in reminders) {
        await service.confirm(m['id']?.toString() ?? '');
      }
      ref.invalidate(medicationReminderProvider);
      if (!context.mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text('打卡成功 已记录 ${reminders.length} 项服药'),
          backgroundColor: const Color(0xFF43A047),
        ),
      );
    } catch (e) {
      if (!context.mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('打卡失败：$e'), backgroundColor: Colors.red),
      );
    }
  }

  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, '看报告', '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 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);
    return health.when(
      data: (data) => _taskCardBubble(data),
      loading: () => _taskCardBubble({}),
      error: (_, __) => _taskCardBubble({}),
    );
  }

  Widget _taskCardBubble(Map<String, dynamic> data) {
    final bp = data['BloodPressure'];
    final bpText = bp is Map ? '${bp['systolic'] ?? '--'}/${bp['diastolic'] ?? '--'}' : '--';
    final hr = data['HeartRate'];
    final hrText = hr is Map && hr['value'] != null ? '${hr['value']}' : '--';
    final gl = data['Glucose'];
    final glText = gl is Map && gl['value'] != null ? '${gl['value']}' : '--';
    final sp = data['SpO2'];
    final spText = sp is Map && sp['value'] != null ? '${sp['value']}' : '--';

    return Container(
      margin: const EdgeInsets.only(bottom: 12),
      padding: const EdgeInsets.all(14),
      decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(16), boxShadow: [BoxShadow(color: const Color(0xFF635BFF).withAlpha(10), blurRadius: 8, offset: const Offset(0, 2))]),
      child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
        Row(children: [Icon(Icons.today, size: 18, color: const Color(0xFF635BFF)), const SizedBox(width: 8), const Text('今日任务', style: TextStyle(fontSize: 15, fontWeight: FontWeight.w600, color: Color(0xFF1A1A1A)))]),
        const SizedBox(height: 10),
        Row(mainAxisAlignment: MainAxisAlignment.spaceAround, children: [
          _miniMetric('血压', bpText, Icons.favorite),
          _miniMetric('心率', hrText, Icons.monitor_heart),
          _miniMetric('血糖', glText, Icons.bloodtype),
          _miniMetric('血氧', spText, Icons.air),
        ]),
      ]),
    );
  }

  Widget _miniMetric(String label, String value, IconData icon) {
    return Column(children: [
      Icon(icon, size: 20, color: const Color(0xFF635BFF)),
      const SizedBox(height: 4),
      Text(value, style: const TextStyle(fontSize: 14, fontWeight: FontWeight.bold, color: Color(0xFF1A1A1A))),
      Text(label, style: const TextStyle(fontSize: 10, color: Color(0xFF999999))),
    ]);
  }
}

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

typedef _AgentIcon = IconData;

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

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

final _agentActions = <ActiveAgent, List<_AgentAction>>{
  ActiveAgent.health: [
    _AgentAction(label: '录入血压', icon: Icons.monitor_heart_outlined, route: 'trend'),
    _AgentAction(label: '录入血糖', icon: Icons.bloodtype_outlined, route: 'trend'),
    _AgentAction(label: '录入心率', icon: Icons.favorite_border, route: 'trend'),
    _AgentAction(label: '录入血氧', icon: Icons.air_outlined, route: 'trend'),
    _AgentAction(label: '录入体重', icon: Icons.monitor_weight_outlined, route: 'trend'),
  ],
  ActiveAgent.diet: [
    _AgentAction(label: '拍照识别', icon: Icons.camera_alt_outlined, isWide: true, route: 'camera'),
    _AgentAction(label: '上传照片', icon: Icons.photo_library_outlined, isWide: true, route: 'gallery'),
  ],
  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: '本周计划', icon: Icons.calendar_month_outlined, isWide: true, route: 'exercisePlan'),
    _AgentAction(label: '新建计划', icon: Icons.add_task_outlined, isWide: true, route: 'exercisePlan'),
    _AgentAction(label: '今日打卡', icon: Icons.fact_check_outlined, isWide: true, route: 'exercisePlan'),
  ],
};

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: const Color(0xFFF7F5FF),
          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: 16, color: Color(0xFF635BFF)),
                const SizedBox(width: 6),
                const Text('AI 建议', style: TextStyle(fontSize: 13, fontWeight: FontWeight.w600, color: Color(0xFF635BFF))),
                const Spacer(),
                Icon(_expanded ? Icons.keyboard_arrow_up : Icons.keyboard_arrow_down, size: 18, color: const Color(0xFFAAAAAA)),
              ],
            ),
            if (_expanded) ...[
              const SizedBox(height: 10),
              Text(widget.advice, style: const TextStyle(fontSize: 13, color: Color(0xFF555555), height: 1.6)),
            ],
          ],
        ),
      ),
    );
  }

}