import 'dart:async';
import 'dart:convert';

import 'package:audio_waveforms/audio_waveforms.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart' show rootBundle;
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';
import 'package:http/http.dart' as http;

import '../../../core/utils/logger.dart';
import '../../../core/utils/synchrodata.dart';
import '../../../core/utils/upload_oss.dart';
import '../../../data/models/appconfig.dart';
import '../../../data/services/db/sqflite_api.dart';
import '../../../data/services/deapsound_ai_service.dart';
import '../model/meeting_details_model.dart';
import '../model/meeting_model.dart';
import 'meeting_controller.dart';

class MeetingDetailsController extends GetxController
    with GetTickerProviderStateMixin {
  late TabController tabController;
  final RxInt currentIndex = 0.obs;

  late AnimationController lottieController;

  final _meetingController = Get.find<MeetingController>();

  final PlayerController playerController = PlayerController();
  RxBool isTop = false.obs;
  RxInt durationMax = 0.obs;
  RxDouble dragOffset = 210.w.obs;

  RxBool isPlay = false.obs;
  RxInt currentDuration = 0.obs;

  RxInt speakerAllStarttime = (-1).obs;
  RxInt speakerAllEndtime = (-1).obs;

  int id = 0;

  RxBool isLoading = true.obs;
  Rx<MeetingModel> meetingData = MeetingModel().obs;
  Rx<MeetingDetailsModel> meetingDetails = MeetingDetailsModel().obs;
  RxList textList = [].obs;
  String allText = '';
  RxBool isSpeakerText = false.obs;
  List editSpeakerTextList = [];
  RxInt editSpeakerTextId = 0.obs;
  String editSpeakerTextChange = '';

  String markmapLibJs = '';
  String d3Js = '';
  String markmapViewJs = '';
  String markmapToolbarJs = '';
  String saveSvgAsPngJs = '';

  String _systemPrompt = '';
  String _userId = '';

  bool _isDisposed = false;

  final String _appid = '2316081933';
  final String _token = 'mcJTh6OelBqU_L78lgGd77Nyrc_-5-En';
  final String _cluster = 'volc_auc_common_flash';
  final String _serviceUrl = 'https://openspeech.bytedance.com/api/v1/auc';
  Map<String, String> _headers = {};

  @override
  void onInit() {
    super.onInit();
    tabController = TabController(length: 4, vsync: this);
    tabController.addListener(() {
      if (currentIndex.value == 2 && tabController.index != 2) {
        FocusScope.of(Get.context!).unfocus();
      }
      currentIndex.value = tabController.index;
    });
    lottieController = AnimationController(vsync: this)
      ..duration = const Duration(seconds: 2);
    final Map<String, dynamic> args = Get.arguments ?? {};
    id = args['id'];
    _headers = {
      'Authorization': 'Bearer; $_token',
      'Content-Type': 'application/json',
    };
    _getAgent();
    _getDataDetails();
    _loadJS();
  }

  @override
  void onClose() {
    tabController.dispose();
    playerController.dispose();
    _isDisposed = true;
    lottieController.dispose();
    super.onClose();
  }

  void popInvokedWithResult(didPop, result) async {
    if (meetingData.value.tasktype != meetingDetails.value.tasktype) {
      await SqfliteApi.editMeetingTitle(
          id, {'tasktype': meetingDetails.value.tasktype});
      int index =
          _meetingController.dataList.indexWhere((item) => item['id'] == id);
      if (index != -1) {
        final dataMap =
            Map<String, dynamic>.from(_meetingController.dataList[index]);
        dataMap['tasktype'] = meetingDetails.value.tasktype;
        if (dataMap['taskid'].isEmpty) {
          dataMap['taskid'] = meetingDetails.value.taskid;
        }
        _meetingController.dataList[index] = dataMap;
        int taskIndex = _meetingController.dataListTask
            .indexWhere((item) => item['id'] == id);
        if (taskIndex != -1) {
          if (meetingDetails.value.tasktype == 1) {
            _meetingController.dataListTask[taskIndex] = dataMap;
          } else {
            _meetingController.dataListTask.removeAt(taskIndex);
          }
        } else {
          if (meetingDetails.value.tasktype == 1) {
            _meetingController.dataListTask.add(dataMap);
          }
        }
      }
    }
    _meetingController.isDisposed = false;
    _meetingController.queryDataListTask(
      _meetingController.dataListTask,
      isAdd: false,
    );
  }

  void _getAgent() async {
    final GetStorage storage = GetStorage();
    Map userInfo = storage.read("user_info");
    _userId = userInfo['user']['uid'];
    _systemPrompt = AppConfig.agentsystemPrompt("meet_assistant") ?? '';
  }

  void _getDataDetails() async {
    final data = await SqfliteApi.getMeetingDetails(id);
    meetingData.value = MeetingModel.fromJson(data);
    meetingDetails.value = MeetingDetailsModel.fromJson(data['details']);
    if (meetingDetails.value.tasktype >= 3) {
      dragOffset.value = 0;
      isTop.value = true;
    }
    await playerController.preparePlayer(
      path: meetingData.value.filepath,
      shouldExtractWaveform: false,
      noOfSamples: 88,
    );
    durationMax.value = await playerController.getDuration(DurationType.max);
    playerController.setFinishMode(finishMode: FinishMode.pause);
    playerController.onCurrentDurationChanged.listen((int position) {
      currentDuration.value = position;
      if (speakerAllEndtime.value > 0) {
        if (position >= speakerAllEndtime.value) {
          playerController.pausePlayer();
          speakerAllStarttime.value = -1;
          speakerAllEndtime.value = -1;
        }
      }
    });
    playerController.onPlayerStateChanged.listen((PlayerState playerState) {
      isPlay.value = playerState.isPlaying;
      if (_isDisposed) return;
      if (playerState.isPlaying) {
        lottieController.repeat();
      } else {
        lottieController.stop();
      }
    });
    if (meetingDetails.value.tasktype >= 2) {
      List speakerList = await SqfliteApi.getMeetingSpeaker(id);
      textList.value = List.from(speakerList);
    }
    if (meetingDetails.value.tasktype == 1 ||
        meetingDetails.value.tasktype == 2) {
      summaryCreate();
    }
    isLoading.value = false;
  }

  void _loadJS() async {
    markmapLibJs = await rootBundle.loadString('assets/js/markmap-lib.js');
    d3Js = await rootBundle.loadString('assets/js/d3@7.js');
    markmapViewJs = await rootBundle.loadString('assets/js/markmap-view.js');
    markmapToolbarJs =
        await rootBundle.loadString('assets/js/markmap-toolbar.js');
    saveSvgAsPngJs =
        await rootBundle.loadString('assets/js/saveSvgAsPng.min.js');
  }

  void editSpeakerText() async {
    if (editSpeakerTextId.value != 0 && editSpeakerTextChange.isNotEmpty) {
      Map? foundElement = editSpeakerTextList.firstWhere(
        (element) => element['id'] == editSpeakerTextId.value,
        orElse: () => null,
      );
      if (foundElement != null) {
        foundElement['content'] = editSpeakerTextChange;
      } else {
        editSpeakerTextList.add({
          'id': editSpeakerTextId.value,
          'content': editSpeakerTextChange,
        });
      }
    }
    if (editSpeakerTextList.isNotEmpty) {
      EasyLoading.show();
      var result = await SqfliteApi.editMeetingSpeaker(editSpeakerTextList);
      if (result != null) {
        for (var element in editSpeakerTextList) {
          int index =
              textList.indexWhere((item) => item['id'] == element['id']);
          if (index != -1) {
            final dataMap = Map<String, dynamic>.from(textList[index]);
            dataMap['content'] = element['content'];
            textList[index] = dataMap;
          }
        }
        Synchrodata.saveOperationRecord('update', {
          'original': jsonEncode(textList),
          'id': id,
        });
        isSpeakerText.value = false;
        editSpeakerTextId.value = 0;
        editSpeakerTextList = [];
      }
      EasyLoading.dismiss();
    } else {
      isSpeakerText.value = false;
      editSpeakerTextId.value = 0;
      editSpeakerTextList = [];
    }
  }

  void summaryCreate() async {
    if (meetingDetails.value.tasktype <= 1) {
      await _audioSpeaker();
    }
    if (allText.isEmpty) {
      String text = '';
      for (var element in textList) {
        if (element['speaker'].isNotEmpty) {
          text += '[${element['speaker']}]: ';
        }
        text += '${element['content']}\n';
      }
      allText = text;
    }
    if (allText.isEmpty) return;
    _aiServiceMessage();
  }

  void _aiServiceMessage() {
    int awaitQuantity = 0;
    int verifyQuantity = 0;
    String summaryText = meetingDetails.value.summary;
    String overviewText = meetingDetails.value.overview;
    if (summaryText.isEmpty) {
      verifyQuantity++;
      DeapsoundAIService().sendMessage(
        messages: [
          {
            'role': 'system',
            'content':
                '您将扮演一名会议总结专家，拥有超强的信息归纳与细分能力。不仅能高效处理各类通用场景会议，精准提炼会议核心内容，为后续思维导图生成奠定坚实基础。若涉及人员，人员名称保留[]。并根据内容只输出对应语言。',
          },
          {'role': 'user', 'content': allText},
        ],
      ).then((value) {
        awaitQuantity++;
        summaryText = value;
        if (awaitQuantity >= verifyQuantity) {
          _aiServiceValue(summaryText, overviewText);
        }
      });
    }
    if (overviewText.isEmpty) {
      verifyQuantity++;
      DeapsoundAIService().sendMessage(
        messages: [
          {
            'role': 'system',
            'content': '您将扮演一名会议事件归纳专家，能准确抓住会议中事件的关键点，并每个事件只需一句话精简总结。',
          },
          {'role': 'user', 'content': allText},
        ],
      ).then((value) {
        awaitQuantity++;
        overviewText = value;
        if (awaitQuantity >= verifyQuantity) {
          _aiServiceValue(summaryText, overviewText);
        }
      });
    }
  }

  void _aiServiceValue(String summaryText, String overviewText) {
    SqfliteApi.editMeeting(id, {
      'tasktype': 3,
      'summary': summaryText,
      'overview': overviewText,
    });
    meetingDetails.value.tasktype = 3;
    meetingDetails.value.summary = summaryText;
    meetingDetails.value.overview = overviewText;
    meetingDetails.refresh();
  }

  Future<void> _audioSpeaker() async {
    EasyLoading.show();
    String audiourl = meetingData.value.audiourl;
    if (audiourl.isEmpty) {
      audiourl = await UploadOss.upload(
        filepath: meetingData.value.filepath,
        rootDir: 'audio',
      );
      meetingData.value.audiourl = audiourl;
    }
    String taskId = meetingDetails.value.taskid;
    if (taskId.isEmpty) {
      taskId = await _submitTask(audiourl);
      await SqfliteApi.editMeeting(id, {'tasktype': 1, 'taskid': taskId});
      meetingDetails.value.taskid = taskId;
      meetingDetails.value.tasktype = 1;
      meetingDetails.refresh();
    }
    EasyLoading.dismiss();
    await _fileRecognize(taskId);
  }

  Future<String> _submitTask(String audiourl) async {
    String format = _getFileType(audiourl);

    final requestBody = jsonEncode({
      "app": {
        "appid": _appid,
        "token": _token,
        "cluster": _cluster,
      },
      "user": {
        "uid": _userId,
      },
      "audio": {
        "format": format,
        "url": audiourl,
      },
      "additions": {
        "with_speaker_info": "True",
      }
    });

    try {
      final response = await http.post(
        Uri.parse('$_serviceUrl/submit'),
        headers: _headers,
        body: requestBody,
      );

      if (response.statusCode != 200) {
        throw Exception('Submit failed with status: ${response.statusCode}');
      }

      final respDic = jsonDecode(response.body);
      final taskId = respDic['resp']['id'] as String;
      Logger.debug('taskId: $taskId');
      return taskId;
    } catch (e) {
      Logger.error('Submit error: ${e.toString()}');
      rethrow;
    }
  }

  String _getFileType(String path) {
    List<String> array = path.split('.');
    return array[array.length - 1];
  }

  Future<Map<String, dynamic>> _queryTask(String taskId) async {
    final queryBody = jsonEncode({
      "appid": _appid,
      "token": _token,
      "id": taskId,
      "cluster": _cluster,
    });

    try {
      final response = await http.post(
        Uri.parse('$_serviceUrl/query'),
        headers: _headers,
        body: queryBody,
      );

      if (response.statusCode != 200) {
        throw Exception('Query failed with status: ${response.statusCode}');
      }

      final respDic = jsonDecode(response.body);
      return respDic;
    } catch (e) {
      Logger.error('Query error: ${e.toString()}');
      rethrow;
    }
  }

  Future<void> _fileRecognize(String taskId) async {
    try {
      final startTime = DateTime.now().millisecondsSinceEpoch;

      if (_isDisposed) return;
      var respDic = await _queryTask(taskId);
      var code = respDic['resp']['code'] as int;

      if (code == 1000) {
        await _addTextList(respDic['resp']['utterances']);
        return;
      } else if (code < 2000) {
        Logger.debug("FileRecognize failed");
        return;
      }

      while (!_isDisposed) {
        await Future.delayed(const Duration(seconds: 2));

        if (_isDisposed) return;

        respDic = await _queryTask(taskId);
        code = respDic['resp']['code'] as int;

        if (code == 1000) {
          await _addTextList(respDic['resp']['utterances']);
          return;
        } else if (code < 2000) {
          Logger.debug("FileRecognize failed");
          return;
        }

        final currentTime = DateTime.now().millisecondsSinceEpoch;
        if (currentTime - startTime > 300 * 1000) {
          Logger.debug('wait time exceeds 300s');
          return;
        }
      }
    } catch (e) {
      Logger.error('Error occurred: ${e.toString()}');
    }
  }

  Future<void> _addTextList(List utterances) async {
    String text = '';
    String personnel = '';
    List<Map<String, Object?>> list = [];
    for (var element in utterances) {
      String speaker = '';
      if (element['additions'].isNotEmpty) {
        speaker = 'Speaker ${element['additions']['speaker']}';
        text += '[$speaker]: ';
        if (!personnel.contains(speaker)) {
          personnel += '[$speaker] ';
        }
      }
      list.add({
        'meetingid': id,
        'content': element['text'],
        'starttime': element['start_time'],
        'endtime': element['end_time'],
        'speaker': speaker,
      });
      text += '${element['text']}\n';
    }
    var result = await SqfliteApi.insertMeetingSpeaker(list);
    if (result != null) {
      await SqfliteApi.editMeeting(id, {'tasktype': 2, 'personnel': personnel});
      List speakerList = await SqfliteApi.getMeetingSpeaker(id);
      textList.value = List.from(speakerList);
      Synchrodata.saveOperationRecord('update', {
        'original': jsonEncode(textList),
        'id': id,
      });
      meetingDetails.value.tasktype = 2;
      meetingDetails.value.personnel = personnel;
      meetingDetails.refresh();
    }
    allText = text;
  }
}