import 'dart:async';
import 'dart:collection';
import 'dart:io';
import 'dart:ui' as ui;
import 'dart:math'; // Import the math package to use sqrt

import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:flutter_pcm_sound/flutter_pcm_sound.dart';
import 'package:flutter_voice_processor/flutter_voice_processor.dart';
import 'package:gallery_saver/gallery_saver.dart';
import 'package:get/get.dart';
import 'package:image_gallery_saver/image_gallery_saver.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:star_lock/app_settings/app_settings.dart';
import 'package:star_lock/login/login/entity/LoginEntity.dart';
import 'package:star_lock/main/lockDetail/lockDetail/lockDetail_logic.dart';
import 'package:star_lock/main/lockDetail/lockDetail/lockDetail_state.dart';
import 'package:star_lock/main/lockDetail/lockDetail/lockNetToken_entity.dart';
import 'package:star_lock/main/lockDetail/lockSet/lockSet/lockSetInfo_entity.dart';
import 'package:star_lock/main/lockMian/entity/lockListInfo_entity.dart';
import 'package:star_lock/network/api_repository.dart';
import 'package:star_lock/talk/call/g711.dart';
import 'package:star_lock/talk/starChart/constant/talk_status.dart';
import 'package:star_lock/talk/starChart/handle/other/packet_loss_statistics.dart';
import 'package:star_lock/talk/starChart/handle/other/talk_data_model.dart';
import 'package:star_lock/talk/starChart/proto/talk_data.pb.dart';
import 'package:star_lock/talk/starChart/proto/talk_data_h264_frame.pb.dart';
import 'package:star_lock/talk/starChart/proto/talk_expect.pb.dart';
import 'package:star_lock/talk/starChart/star_chart_manage.dart';
import 'package:star_lock/talk/starChart/views/talkView/talk_view_state.dart';
import 'package:star_lock/talk/starChart/webView/h264_web_view_state.dart';
import 'package:star_lock/tools/G711Tool.dart';
import 'package:star_lock/tools/bugly/bugly_tool.dart';
import 'package:webview_flutter/webview_flutter.dart';

import '../../../../tools/baseGetXController.dart';

class H264WebViewLogic extends BaseGetXController {
  final H264WebViewState state = H264WebViewState();

  final LockDetailState lockDetailState = Get.put(LockDetailLogic()).state;

  // 添加模拟数据相关变量
  static const int CHUNK_SIZE = 4096;
  Timer? _mockDataTimer;
  int _startAudioTime = 0; // 开始播放时间戳
  int audioBufferSize = 2; // 音频默认缓冲2帧
  bool _isFirstAudioFrame = true; // 是否是第一帧
  // 定义音频帧缓冲和发送函数
  final List<int> _bufferedAudioFrames = <int>[];
  final Queue<List<int>> _frameBuffer = Queue<List<int>>();
  static const int FRAME_BUFFER_SIZE = 25;

  // 添加监听状态和订阅引用
  bool _isListening = false;
  StreamSubscription? _streamSubscription;

  @override
  void onInit() {
    // 初始化 WebView 控制器
    state.webViewController = WebViewController()
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..enableZoom(false)
      ..addJavaScriptChannel(
        'Flutter',
        onMessageReceived: (message) {
          print("来自 HTML 的消息: ${message.message}");
        },
      );

    super.onInit();
    // 创建流数据监听
    _createFramesStreamListen();
    _startListenTalkStatus();
    state.talkStatus.value = state.startChartTalkStatus.status;
    // 初始化音频播放器
    _initFlutterPcmSound();

    // 初始化录音控制器
    _initAudioRecorder();

    // 加载本地 HTML
    _loadLocalHtml();

    // playLocalTestVideo();

    requestPermissions();
  }

  Future<void> requestPermissions() async {
    // 申请存储权限
    var storageStatus = await Permission.storage.request();
    // 申请录音权限
    var microphoneStatus = await Permission.microphone.request();

    if (storageStatus.isGranted && microphoneStatus.isGranted) {
      print("Permissions granted");
    } else {
      print("Permissions denied");
      // 如果权限被拒绝，可以提示用户或跳转到设置页面
      if (await Permission.storage.isPermanentlyDenied) {
        openAppSettings(); // 跳转到应用设置页面
      }
    }
  }

  /// 初始化音频录制器
  void _initAudioRecorder() {
    state.voiceProcessor = VoiceProcessor.instance;
  }

  /// 初始化音频播放器
  void _initFlutterPcmSound() {
    const int sampleRate = 8000;
    FlutterPcmSound.setLogLevel(LogLevel.none);
    FlutterPcmSound.setup(sampleRate: sampleRate, channelCount: 1);
    // 设置 feed 阈值
    if (Platform.isAndroid) {
      FlutterPcmSound.setFeedThreshold(1024); // Android 平台的特殊处理
    } else {
      FlutterPcmSound.setFeedThreshold(2000); // 非 Android 平台的处理
    }
  }

  void _createFramesStreamListen() async {
    // 防止重复监听
    if (_isListening) {
      AppLog.log("已经存在数据流监听，避免重复监听");
      return;
    }

    AppLog.log("==== 启动新的数据流监听 ====");
    _isListening = true;
    _streamSubscription = state.talkDataRepository.talkDataStream
        .listen((TalkDataModel talkDataModel) async {
      final talkData = talkDataModel.talkData;
      final contentType = talkData!.contentType;
      final currentTime = DateTime.now().millisecondsSinceEpoch;

      // 判断数据类型，进行分发处理
      switch (contentType) {
        case TalkData_ContentTypeE.G711:
          if (state.isShowLoading.isFalse) {
            // // 第一帧到达时记录开始时间
            if (_isFirstAudioFrame) {
              _startAudioTime = currentTime;
              _isFirstAudioFrame = false;
            }

            // 计算音频延迟
            final expectedTime = _startAudioTime + talkData.durationMs;
            final audioDelay = currentTime - expectedTime;

            // 如果延迟太大，清空缓冲区并直接播放
            if (audioDelay > 500) {
              state.audioBuffer.clear();
              if (state.isOpenVoice.value) {
                _playAudioFrames();
              }
              return;
            }
            if (state.audioBuffer.length >= audioBufferSize) {
              state.audioBuffer.removeAt(0); // 丢弃最旧的数据
            }
            state.audioBuffer.add(talkData); // 添加新数据
            // 添加音频播放逻辑，与视频类似
            _playAudioFrames();
          }

          break;
        case TalkData_ContentTypeE.H264:
          // // 添加新帧到缓冲区
          _frameBuffer.add(talkData.content);

          // 当缓冲区超过最大容量时,发送最早的帧并移除
          while (_frameBuffer.length > FRAME_BUFFER_SIZE) {
            if (_frameBuffer.isNotEmpty) {
              final frame = _frameBuffer.removeFirst();
              await _sendBufferedData(frame);
            }
            if (state.isShowLoading.isTrue) {
              state.isShowLoading.value = false;
            }
          }
          break;
      }
    });
  }

  /// 播放本地测试视频文件
  // Future<void> playLocalTestVideo() async {
  //   try {
  //     ByteData data = await rootBundle.load('assets/html/demo.h264');
  //     List<int> bytes = data.buffer.asUint8List();
  //
  //     int offset = 0;
  //     _mockDataTimer = Timer.periodic(Duration(milliseconds: 40), (timer) {
  //       if (offset >= bytes.length) {
  //         timer.cancel();
  //         return;
  //       }
  //
  //       int end = min(offset + CHUNK_SIZE, bytes.length);
  //       List<int> chunk = bytes.sublist(offset, end);
  //       _sendBufferedData(chunk);
  //
  //       offset += CHUNK_SIZE;
  //     });
  //   } catch (e) {
  //     AppLog.log('加载测试视频文件失败: $e');
  //   }
  // }

  // 新增：音频帧播放逻辑
  void _playAudioFrames() {
    // 如果缓冲区为空或未达到目标大小，不进行播放
    // 音频缓冲区要求更小，以减少延迟
    if (state.audioBuffer.isEmpty ||
        state.audioBuffer.length < audioBufferSize) {
      return;
    }

    // 找出时间戳最小的音频帧
    TalkData? oldestFrame;
    int oldestIndex = -1;
    for (int i = 0; i < state.audioBuffer.length; i++) {
      if (oldestFrame == null ||
          state.audioBuffer[i].durationMs < oldestFrame.durationMs) {
        oldestFrame = state.audioBuffer[i];
        oldestIndex = i;
      }
    }

    // 确保找到了有效帧
    if (oldestFrame != null && oldestIndex != -1) {
      if (state.isOpenVoice.value) {
        // 播放音频
        _playAudioData(oldestFrame);
      }
      state.audioBuffer.removeAt(oldestIndex);
    }
  }

  /// 播放音频数据
  void _playAudioData(TalkData talkData) async {
    if (state.isOpenVoice.value) {
      final list =
          G711().decodeAndDenoise(talkData.content, true, 8000, 300, 150);
      // // 将 PCM 数据转换为 PcmArrayInt16
      final PcmArrayInt16 fromList = PcmArrayInt16.fromList(list);
      FlutterPcmSound.feed(fromList);
      if (!state.isPlaying.value) {
        FlutterPcmSound.play();
        state.isPlaying.value = true;
      }
    }
  }

  /// 加载html文件
  Future<void> _loadLocalHtml() async {
    // 加载 HTML 文件内容
    final String fileHtmlContent =
        await rootBundle.loadString('assets/html/h264.html');

    // 加载 JS 文件内容
    final String jsContent =
        await rootBundle.loadString('assets/html/jmuxer.min.js');

    // 将 JS 文件内容嵌入到 HTML 中
    final String htmlWithJs = fileHtmlContent.replaceAll(
        '<script src="jmuxer.min.js"></script>', // 替换掉引用外部 JS 的标签
        '<script>$jsContent</script>' // 使用内联方式嵌入 JS 内容
        );

    // 加载最终的 HTML 字符串到 WebView 中
    if (state.webViewController != null) {
      state.webViewController.loadHtmlString(htmlWithJs); // 设置 baseUrl 避免资源加载问题
    }
  }

  // 修改后的发送方法
  _sendBufferedData(List<int> buffer) async {
    // 原始发送逻辑
    String jsCode = "feedDataFromFlutter($buffer);";
    await state.webViewController.runJavaScript(jsCode);

    if (state.isShowLoading.isTrue) {
      await Future.delayed(Duration(seconds: 1));
      state.isShowLoading.value = false;
    }
  }

  /// 监听对讲状态
  void _startListenTalkStatus() {
    state.startChartTalkStatus.statusStream.listen((talkStatus) {
      state.talkStatus.value = talkStatus;
      switch (talkStatus) {
        case TalkStatus.rejected:
        case TalkStatus.hangingUpDuring:
        case TalkStatus.notTalkData:
        case TalkStatus.notTalkPing:
        case TalkStatus.end:
          _handleInvalidTalkStatus();
          break;
        case TalkStatus.answeredSuccessfully:
          state.oneMinuteTimeTimer?.cancel(); // 取消旧定时器
          state.oneMinuteTimeTimer ??=
              Timer.periodic(const Duration(seconds: 1), (Timer t) {
            if (state.isShowLoading.isFalse) {
              state.oneMinuteTime.value++;
              // if (state.oneMinuteTime.value >= 60) {
              //   t.cancel(); // 取消定时器
              //   state.oneMinuteTime.value = 0;
              // }
            }
          });
          break;
        default:
          // 其他状态的处理
          break;
      }
    });
  }

  /// 更新发送预期数据
  void updateTalkExpect() {
    TalkExpectReq talkExpectReq = TalkExpectReq();
    state.isOpenVoice.value = !state.isOpenVoice.value;
    if (!state.isOpenVoice.value) {
      talkExpectReq = TalkExpectReq(
        videoType: [VideoTypeE.IMAGE],
        audioType: [],
      );
      showToast('已静音'.tr);
    } else {
      talkExpectReq = TalkExpectReq(
        videoType: [VideoTypeE.IMAGE],
        audioType: [AudioTypeE.G711],
      );
    }

    /// 修改发送预期数据
    StartChartManage().changeTalkExpectDataTypeAndReStartTalkExpectMessageTimer(
        talkExpect: talkExpectReq);
  }

  /// 处理无效通话状态
  void _handleInvalidTalkStatus() {}

  /// 截图并保存到相册
  Future<void> captureAndSavePng() async {
    try {
      if (state.globalKey.currentContext == null) {
        AppLog.log('截图失败: 未找到当前上下文');
        return;
      }
      final RenderRepaintBoundary boundary = state.globalKey.currentContext!
          .findRenderObject()! as RenderRepaintBoundary;
      final ui.Image image = await boundary.toImage();
      final ByteData? byteData =
          await image.toByteData(format: ui.ImageByteFormat.png);

      if (byteData == null) {
        AppLog.log('截图失败: 图像数据为空');
        return;
      }
      final Uint8List pngBytes = byteData.buffer.asUint8List();

      // 获取应用程序的文档目录
      final Directory directory = await getApplicationDocumentsDirectory();
      final String imagePath = '${directory.path}/screenshot.png';

      // 将截图保存为文件
      final File imgFile = File(imagePath);
      await imgFile.writeAsBytes(pngBytes);

      // 将截图保存到相册
      await ImageGallerySaver.saveFile(imagePath);

      AppLog.log('截图保存路径: $imagePath');
      showToast('截图已保存到相册'.tr);
    } catch (e) {
      AppLog.log('截图失败: $e');
    }
  }

  // 发起接听命令
  void initiateAnswerCommand() {
    StartChartManage().startTalkAcceptTimer();
  }

  //开始录音
  Future<void> startProcessingAudio() async {
    try {
      if (await state.voiceProcessor?.hasRecordAudioPermission() ?? false) {
        await state.voiceProcessor?.start(state.frameLength, state.sampleRate);
        final bool? isRecording = await state.voiceProcessor?.isRecording();
        state.isRecordingAudio.value = isRecording!;
        state.startRecordingAudioTime.value = DateTime.now();

        // 增加录音帧监听器和错误监听器
        state.voiceProcessor
            ?.addFrameListeners(<VoiceProcessorFrameListener>[_onFrame]);
        state.voiceProcessor?.addErrorListener(_onError);
      } else {
        // state.errorMessage.value = 'Recording permission not granted';
      }
    } on PlatformException catch (ex) {
      // state.errorMessage.value = 'Failed to start recorder: $ex';
    }
    state.isOpenVoice.value = false;
  }

  /// 停止录音
  Future<void> stopProcessingAudio() async {
    try {
      await state.voiceProcessor?.stop();
      state.voiceProcessor?.removeFrameListener(_onFrame);
      state.udpSendDataFrameNumber = 0;
      // 记录结束时间
      state.endRecordingAudioTime.value = DateTime.now();

      // 计算录音的持续时间
      final Duration duration = state.endRecordingAudioTime.value
          .difference(state.startRecordingAudioTime.value);

      state.recordingAudioTime.value = duration.inSeconds;
    } on PlatformException catch (ex) {
      // state.errorMessage.value = 'Failed to stop recorder: $ex';
    } finally {
      final bool? isRecording = await state.voiceProcessor?.isRecording();
      state.isRecordingAudio.value = isRecording!;
      state.isOpenVoice.value = true;
    }
  }

// 音频帧处理
  Future<void> _onFrame(List<int> frame) async {
    // 添加最大缓冲限制
    if (_bufferedAudioFrames.length > state.frameLength * 3) {
      _bufferedAudioFrames.clear(); // 清空过多积累的数据
      return;
    }

    // 首先应用固定增益提升基础音量
    List<int> amplifiedFrame = _applyGain(frame, 1.8);
    // 编码为G711数据
    List<int> encodedData = G711Tool.encode(amplifiedFrame, 0); // 0表示A-law
    _bufferedAudioFrames.addAll(encodedData);
    // 使用相对时间戳
    final int ms = DateTime.now().millisecondsSinceEpoch % 1000000; // 使用循环时间戳
    int getFrameLength = state.frameLength;
    if (Platform.isIOS) {
      getFrameLength = state.frameLength * 2;
    }

    // 添加发送间隔控制
    if (_bufferedAudioFrames.length >= state.frameLength) {
      try {
        await StartChartManage().sendTalkDataMessage(
          talkData: TalkData(
            content: _bufferedAudioFrames,
            contentType: TalkData_ContentTypeE.G711,
            durationMs: ms,
          ),
        );
      } finally {
        _bufferedAudioFrames.clear(); // 确保清理缓冲区
      }
    } else {
      _bufferedAudioFrames.addAll(encodedData);
    }
  }

// 错误监听
  void _onError(VoiceProcessorException error) {
    AppLog.log(error.message!);
  }

// 添加音频增益处理方法
  List<int> _applyGain(List<int> pcmData, double gainFactor) {
    List<int> result = List<int>.filled(pcmData.length, 0);

    for (int i = 0; i < pcmData.length; i++) {
      // PCM数据通常是有符号的16位整数
      int sample = pcmData[i];

      // 应用增益
      double amplified = sample * gainFactor;

      // 限制在有效范围内，防止溢出
      if (amplified > 32767) {
        amplified = 32767;
      } else if (amplified < -32768) {
        amplified = -32768;
      }

      result[i] = amplified.toInt();
    }

    return result;
  }

  /// 挂断
  void udpHangUpAction() async {
    if (state.talkStatus.value == TalkStatus.answeredSuccessfully) {
      // 如果是通话中就挂断
      StartChartManage().startTalkHangupMessageTimer();
    } else {
      // 拒绝
      StartChartManage().startTalkRejectMessageTimer();
    }
    // _mockDataTimer?.cancel();
    // _mockDataTimer = null;
    PacketLossStatistics().reset();
    Get.back();
  }

  // 远程开锁
  Future<void> remoteOpenLock() async {
    final lockPeerId = StartChartManage().lockPeerId;
    final lockListPeerId = StartChartManage().lockListPeerId;
    int lockId = lockDetailState.keyInfos.value.lockId ?? 0;

    // 如果锁列表获取到peerId，代表有多个锁，使用锁列表的peerId
    // 从列表中遍历出对应的peerId
    lockListPeerId.forEach((element) {
      if (element.network?.peerId == lockPeerId) {
        lockId = element.lockId ?? 0;
      }
    });

    final LockSetInfoEntity lockSetInfoEntity =
        await ApiRepository.to.getLockSettingInfoData(
      lockId: lockId.toString(),
    );
    if (lockSetInfoEntity.errorCode!.codeIsSuccessful) {
      if (lockSetInfoEntity.data?.lockFeature?.remoteUnlock == 1 &&
          lockSetInfoEntity.data?.lockSettingInfo?.remoteUnlock == 1) {
        final LoginEntity entity = await ApiRepository.to
            .remoteOpenLock(lockId: lockId.toString(), timeOut: 60);
        if (entity.errorCode!.codeIsSuccessful) {
          showToast('已开锁'.tr);
          StartChartManage().lockListPeerId = [];
        }
      } else {
        showToast('该锁的远程开锁功能未启用'.tr);
      }
    }
  }

  /// 停止播放音频
  void _stopPlayG711Data() async {
    await FlutterPcmSound.pause();
    await FlutterPcmSound.stop();
    await FlutterPcmSound.clear();
  }

  @override
  void onClose() {
    _stopPlayG711Data(); // 停止播放音频

    state.audioBuffer.clear(); // 清空音频缓冲区

    state.oneMinuteTimeTimer?.cancel();
    state.oneMinuteTimeTimer = null;

    // 停止播放音频
    stopProcessingAudio();

    state.oneMinuteTimeTimer?.cancel(); // 取消旧定时器
    state.oneMinuteTimeTimer = null; // 取消旧定时器
    state.oneMinuteTime.value = 0;

    // 取消数据流监听
    _streamSubscription?.cancel();
    _isListening = false;

    // 重置期望数据
    StartChartManage().reSetDefaultTalkExpect();

    super.onClose();
  }

  @override
  void dispose() {
    // _mockDataTimer?.cancel();
    // _mockDataTimer = null;
    super.dispose();
    StartChartManage().startTalkHangupMessageTimer();
    state.animationController.dispose();
    state.webViewController.clearCache();
    state.webViewController.reload();
    state.oneMinuteTimeTimer?.cancel();
    state.oneMinuteTimeTimer = null;
    stopProcessingAudio();
    StartChartManage().reSetDefaultTalkExpect();
    _frameBuffer.clear();
  }
}