import 'package:agora_rtc_engine/agora_rtc_engine.dart';
import 'package:dating_touchme_app/model/live/live_chat_message.dart';
import 'package:dating_touchme_app/model/rtc/rtc_channel_data.dart';
import 'package:dating_touchme_app/model/rtc/rtc_channel_detail.dart';
import 'package:dating_touchme_app/network/network_service.dart';
import 'package:dating_touchme_app/rtc/rtc_manager.dart';
import 'package:dating_touchme_app/service/live_chat_message_service.dart';
import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
import 'package:get/get.dart';
import 'package:permission_handler/permission_handler.dart';

// 当前角色
enum CurrentRole{
  broadcaster,//主持
  maleAudience,//男嘉宾
  femaleAudience,//女嘉宾
  audience,//观众
  normalUser, //普通用户
}

/// 直播房间相关控制器
class RoomController extends GetxController {
  RoomController({NetworkService? networkService})
    : _networkService = networkService ?? Get.find<NetworkService>();

  final NetworkService _networkService;
  CurrentRole currentRole = CurrentRole.normalUser;
  bool isLive = false;
  /// 当前频道信息
  final Rxn<RtcChannelData> rtcChannel = Rxn<RtcChannelData>();
  final Rxn<RtcChannelDetail> rtcChannelDetail = Rxn<RtcChannelDetail>();

  /// 聊天消息列表
  final RxList<LiveChatMessage> chatMessages = <LiveChatMessage>[].obs;

  /// 消息服务实例
  final LiveChatMessageService _messageService =
      LiveChatMessageService.instance;

  @override
  void onInit() {
    super.onInit();
    // 注册消息监听
    _registerMessageListener();
  }

  @override
  void onClose() {
    super.onClose();
    // 移除消息监听
    _messageService.unregisterMessageListener();
  }

  /// 注册消息监听
  void _registerMessageListener() {
    _messageService.registerMessageListener(
      onMessageReceived: (message) {
        _addMessage(message);
      },
      onMessageError: (error) {
        print('❌ 消息处理错误: $error');
      },
    );
  }

  /// 添加消息到列表（带去重和数量限制）
  void _addMessage(LiveChatMessage message) {
    // 去重：检查是否已存在相同的消息（基于 userId + content + timestamp）
    final exists = chatMessages.any(
      (m) =>
          m.userId == message.userId &&
          m.content == message.content &&
          (m.timestamp - message.timestamp).abs() < 1000,
    ); // 1秒内的相同消息视为重复

    if (exists) {
      print('⚠️ 消息已存在，跳过添加');
      return;
    }

    chatMessages.add(message);
    print('✅ 消息已添加到列表，当前消息数: ${chatMessages.length}');

    // 限制消息数量，最多保留100条
    if (chatMessages.length > 300) {
      chatMessages.removeAt(0);
      print('📝 消息列表已满，移除最旧的消息');
    }
  }

  /// 调用接口创建 RTC 频道
  Future<void> createRtcChannel() async {
    final granted = await _ensureRtcPermissions();
    if (!granted) return;

    try {
      final response = await _networkService.rtcApi.createRtcChannel();
      final base = response.data;
      if (base.isSuccess && base.data != null) {
        rtcChannel.value = base.data;
        currentRole = CurrentRole.broadcaster;
        isLive = true;
        await _joinRtcChannel(
          base.data!.token,
          base.data!.channelId,
          base.data!.uid,
          ClientRoleType.clientRoleBroadcaster,
        );
      } else {
        final message = base.message.isNotEmpty ? base.message : '创建频道失败';
        SmartDialog.showToast(message);
      }
    } catch (e) {
      SmartDialog.showToast('创建频道异常：$e');
    }
  }

  Future<void> joinChannel(String channelName) async {
    try {
      final response = await _networkService.rtcApi.getSwRtcToken(channelName);
      final base = response.data;
      if (base.isSuccess && base.data != null) {
        rtcChannel.value = base.data;
        currentRole = CurrentRole.normalUser;
        await _joinRtcChannel(
          base.data!.token,
          channelName,
          base.data!.uid,
          ClientRoleType.clientRoleAudience,
        );
      }
    } catch (e) {
      SmartDialog.showToast('加入频道异常：$e');
    }
  }

  Future<void> _joinRtcChannel(
    String token,
    String channelName,
    int uid,
    ClientRoleType roleType,
  ) async {
    try {
      await _fetchRtcChannelDetail(channelName);
      await RTCManager.instance.joinChannel(
        token: token,
        channelId: channelName,
        uid: uid,
        role: roleType,
      );
    } catch (e) {
      SmartDialog.showToast('加入频道失败：$e');
    }
  }

  Future<void> joinChat(CurrentRole role) async {
    final data = {
      'channelId': rtcChannel.value?.channelId,
      'seatNumber': role == CurrentRole.maleAudience ? 1 : 2,
      'isMicrophoneOn': role != CurrentRole.normalUser ? true : false,
      'isVideoOn': role == CurrentRole.maleAudience || role == CurrentRole.femaleAudience ? true : false,
    };
    final response = await _networkService.rtcApi.connectRtcChannel(data);
    if (!response.data.isSuccess) {
      SmartDialog.showToast(response.data.message);
      return;
    }
    currentRole = role;
    if(role == CurrentRole.maleAudience || role == CurrentRole.femaleAudience){
      await RTCManager.instance.publishVideo(role);
    }else{
      await RTCManager.instance.publishAudio();
    }
    isLive = true;
  }

  Future<void> leaveChat() async {
    final data = {
      'channelId': rtcChannel.value?.channelId
    };
    final response = await _networkService.rtcApi.disconnectRtcChannel(data);
    if(response.data.isSuccess){
      await RTCManager.instance.unpublish();
    }
  }

  Future<void> _fetchRtcChannelDetail(String channelName) async {
    try {
      final response = await _networkService.rtcApi.getRtcChannelDetail(
        channelName,
      );
      final base = response.data;
      if (base.isSuccess && base.data != null) {
        rtcChannelDetail.value = base.data;
      }
    } catch (e) {
      print('获取 RTC 频道详情失败：$e');
    }
  }

  /// 发送公屏消息
  Future<void> sendChatMessage(String content) async {
    final channelName =
        rtcChannel.value?.channelId ?? RTCManager.instance.currentChannelId;

    final result = await _messageService.sendMessage(
      content: content,
      channelName: channelName,
    );

    // 如果发送成功，立即添加到本地列表（优化体验，避免等待 RTM 回调）
    if (result.success && result.message != null) {
      _addMessage(result.message!);
    }
  }

  Future<bool> _ensureRtcPermissions() async {
    final statuses = await [Permission.camera, Permission.microphone].request();
    final allGranted = statuses.values.every((status) => status.isGranted);
    if (allGranted) {
      return true;
    }

    final permanentlyDenied = statuses.values.any(
      (status) => status.isPermanentlyDenied,
    );
    if (permanentlyDenied) {
      SmartDialog.showToast('请在系统设置中开启摄像头和麦克风权限');
      await openAppSettings();
    } else {
      SmartDialog.showToast('请允许摄像头和麦克风权限以进入房间');
    }
    return false;
  }

  Future<void> leaveChannel() async {
    await RTCManager.instance.leaveChannel();
  }
}