import 'package:flutter/material.dart';

import 'device_category.dart';

/// 功能模块（agent）定义。
///
/// AI 页与广场页共用同一份注册表：广场展示全部，AI 页只展示用户启用的那些，
/// 顺序由 [AgentModuleService] 持久化。新增 agent 只需往 [AgentModules.all]
/// 里加一条，两个页面自动生效。
class AgentModule {
  const AgentModule({
    required this.id,
    required this.title,
    required this.icon,
    required this.gradient,
    this.subtitle,
    this.requiresDevice = false,
    this.comingSoon = false,
  });

  /// 唯一标识，持久化时存的就是它，改名会导致用户已有配置失效
  final String id;

  /// i18n key，展示时 `.tr`（不是中文文案本身）
  final String title;

  /// i18n key，展示时 `.tr`
  final String? subtitle;
  final IconData icon;

  /// 卡片图标底色渐变（两个色值）
  final List<Color> gradient;

  /// 是否依赖设备连接：未连接时卡片置灰，点击提示连接设备
  final bool requiresDevice;

  /// 尚未实现的占位模块：可以加到 AI 页排版，但点击只提示"敬请期待"
  final bool comingSoon;
}

/// 全部可用模块的注册表
class AgentModules {
  AgentModules._();

  // ---------- 已实现（对应现有路由） ----------
  static const String meeting = 'meeting';
  static const String simultaneous = 'simultaneous';
  static const String faceToFace = 'faceToFace';
  static const String call = 'call';
  static const String audioVideo = 'audioVideo';
  static const String callRecording = 'callRecording';
  static const String fieldRecording = 'fieldRecording';

  /// EMAI 助手：原来 AI 页底部那颗悬浮球，改成广场里的一个正式 agent
  static const String emaiAssistant = 'emaiAssistant';
  static const String textTranslation = 'textTranslation';
  static const String pictureTranslation = 'pictureTranslation';

  // ---------- 规划中（占位，方便测试增删） ----------
  static const String englishChat = 'englishChat';
  static const String englishStudy = 'englishStudy';
  static const String kidsStory = 'kidsStory';

  static const List<AgentModule> all = [
    AgentModule(
      id: meeting,
      title: 'agentMeeting',
      subtitle: 'agentMeetingDesc',
      icon: Icons.groups_2,
      gradient: [Color(0xFFAB47BC), Color(0xFFEC407A)],
    ),
    AgentModule(
      id: emaiAssistant,
      title: 'agentEmai',
      subtitle: 'agentEmaiDesc',
      icon: Icons.auto_awesome,
      gradient: [Color(0xFF5B8DEF), Color(0xFF7E57C2)],
    ),
    AgentModule(
      id: simultaneous,
      title: 'agentSimultaneous',
      subtitle: 'agentSimultaneousDesc',
      icon: Icons.record_voice_over,
      gradient: [Color(0xFF4CAF50), Color(0xFF009688)],
    ),
    AgentModule(
      id: faceToFace,
      title: 'agentFaceToFace',
      subtitle: 'agentFaceToFaceDesc',
      icon: Icons.forum,
      gradient: [Color(0xFF42A5F5), Color(0xFF1E88E5)],
    ),
    AgentModule(
      id: callRecording,
      title: 'agentCallRecording',
      subtitle: 'agentCallRecordingDesc',
      icon: Icons.fiber_manual_record,
      gradient: [Color(0xFFEF5350), Color(0xFFE53935)],
      requiresDevice: true,
    ),
    AgentModule(
      id: fieldRecording,
      title: 'agentFieldRecording',
      // 有设备走设备录音通路，没设备退回手机麦克风，两种情况都能用
      subtitle: 'agentFieldRecordingDesc',
      icon: Icons.mic,
      gradient: [Color(0xFF26C6DA), Color(0xFF00838F)],
    ),
    AgentModule(
      id: call,
      title: 'agentCall',
      subtitle: 'agentCallDesc',
      icon: Icons.phone_in_talk,
      gradient: [Color(0xFFFFA726), Color(0xFFFB8C00)],
      requiresDevice: true,
    ),
    AgentModule(
      id: audioVideo,
      title: 'agentAudioVideo',
      subtitle: 'agentAudioVideoDesc',
      // 放映机图标：这个功能是音视频内容翻译，用投影/放映的意象更贴切
      icon: Icons.slideshow,
      gradient: [Color(0xFF5C6BC0), Color(0xFF3949AB)],
    ),
    AgentModule(
      id: textTranslation,
      title: 'agentTextTranslation',
      subtitle: 'agentTextTranslationDesc',
      icon: Icons.translate,
      gradient: [Color(0xFF26A69A), Color(0xFF00796B)],
    ),
    AgentModule(
      id: pictureTranslation,
      title: 'agentPictureTranslation',
      subtitle: 'agentPictureTranslationDesc',
      icon: Icons.image_search,
      gradient: [Color(0xFFEC407A), Color(0xFFAD1457)],
    ),
    AgentModule(
      id: englishChat,
      title: 'agentEnglishChat',
      subtitle: 'agentEnglishChatDesc',
      icon: Icons.chat_bubble_outline,
      gradient: [Color(0xFF7E57C2), Color(0xFF5E35B1)],
      comingSoon: true,
    ),
    AgentModule(
      id: englishStudy,
      title: 'agentEnglishStudy',
      subtitle: 'agentEnglishStudyDesc',
      icon: Icons.menu_book,
      gradient: [Color(0xFF29B6F6), Color(0xFF0288D1)],
      comingSoon: true,
    ),
    AgentModule(
      id: kidsStory,
      title: 'agentKidsStory',
      subtitle: 'agentKidsStoryDesc',
      icon: Icons.auto_stories,
      gradient: [Color(0xFFFF7043), Color(0xFFF4511E)],
      comingSoon: true,
    ),
  ];

  /// AI 页首次进入时的默认模块。
  ///
  /// 没连过设备也能用的三个（都只依赖手机本身）：语音记录助手、EMAI助手、现场录音。
  /// 依赖设备的功能等连上对应设备后由 [defaultsForCategory] 自动补进来。
  static const List<String> defaultEnabled = [
    // 网格区（左大 + 右上下两小）
    call,
    simultaneous,
    faceToFace,
    // 并排方块
    meeting,
    audioVideo,
    // 往下是整行横条，现场录音是第一行
    fieldRecording,
    callRecording,
    textTranslation,
    pictureTranslation,
    emaiAssistant,
  ];

  /// 各设备品类**第一次连接成功**时要铺到 AI 页的默认功能与顺序。
  ///
  /// key 用的是 [DeviceCategories] 的品类 id。只在该品类首次连接时生效一次
  /// （由 AgentModuleService 记录已应用过的品类），之后用户怎么增删排序都不再覆盖。
  static const Map<String, List<String>> defaultsByCategory = {
    // AI手机支架 / AI录音卡片：只有录音相关能力，AI 页就只留这三个
    DeviceCategories.phoneHolder: [meeting, fieldRecording, callRecording],
    DeviceCategories.noteCard: [meeting, fieldRecording, callRecording],
    // AI耳机（恒玄）：通话 + 翻译整套都能跑，铺开全量默认编排
    DeviceCategories.earphone: defaultEnabled,
  };

  static List<String> defaultsForCategory(String? categoryId) {
    if (categoryId == null) return const [];
    return defaultsByCategory[categoryId] ?? const [];
  }

  static AgentModule? byId(String id) {
    for (final m in all) {
      if (m.id == id) return m;
    }
    return null;
  }
}