import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';

import '../../../core/utils/logger.dart';
import '../db/sqflite_api.dart';
import '../deapsound_ai_service.dart';
import 'meeting_task_service.dart';
import 'meeting_task_service2.dart';

class SummaryTaskService extends GetxService {
  final _taskService = Get.find<MeetingTaskService>();
  final _taskService2 = Get.find<MeetingTaskService2>();

  final GetStorage _storage = GetStorage();

  List _taskList = [];

  bool _isTask = false;

  String summary = ''; //AI总结内容
  String overview = ''; //AI概览内容

  @override
  void onInit() {
    super.onInit();
    _getTaskList();
  }

  void cancelTask() {
    _taskList.clear();
    _storage.remove("summary_task_list");
  }

  void _getTaskList() {
    _taskList = _storage.read("summary_task_list") ?? [];
    _executeTask();
  }

  Future<void> addTaskList(
      int id, String text, String prompt, String outline) async {
    Logger.debug("添加总结任务列表");
    _taskList.add({
      'id': id,
      'text': text,
      'prompt': prompt,
      'outline': outline,
    });
    _storage.write("summary_task_list", _taskList);
    _executeTask();
  }

  void _executeTask() async {
    if (_taskList.isEmpty) return;
    if (_isTask) return;
    _isTask = true;
    var task = _taskList.first;
    _aiServiceMessage(
      task['id'],
      task['text'],
      task['prompt'],
      task['outline'],
    );
    Logger.debug("执行总结任务列表");
  }

  void removeTask(int id) {
    _taskList.removeWhere((element) => element['id'] == id);
    _storage.write("summary_task_list", _taskList);
  }

  void _aiServiceMessage(int id, String text, String prompt, String outline) {
    final ai = DeapsoundAIService();
    String summaryText = '';
    String overviewText = '';
    var summaryDone = false;
    var overviewDone = false;
    var summarySuccess = false;
    var overviewSuccess = false;

    void tryFinish() {
      if (summaryDone && overviewDone) {
        if (summarySuccess &&
            overviewSuccess &&
            summaryText.isNotEmpty &&
            overviewText.isNotEmpty) {
          _aiServiceValue(id, summaryText, overviewText);
        } else {
          _isTask = false;
          _executeTask();
        }
      }
    }

    final summaryStream = ai.sendMessageStream(messages: [
      {'role': 'system', 'content': prompt},
      {'role': 'user', 'content': text},
    ]).timeout(const Duration(seconds: 120));

    final overviewStream = ai.sendMessageStream(messages: [
      {'role': 'system', 'content': outline},
      {'role': 'user', 'content': text},
    ]).timeout(const Duration(seconds: 120));

    summaryStream.listen((chunk) {
      summaryText += chunk;
    }, onError: (error) {
      summaryDone = true;
      summarySuccess = false;
      tryFinish();
    }, onDone: () {
      summaryDone = true;
      summarySuccess = true;
      tryFinish();
    }, cancelOnError: true);

    overviewStream.listen((chunk) {
      overviewText += chunk;
    }, onError: (error) {
      overviewDone = true;
      overviewSuccess = false;
      tryFinish();
    }, onDone: () {
      overviewDone = true;
      overviewSuccess = true;
      tryFinish();
    }, cancelOnError: true);
  }

  Future<void> _aiServiceValue(
      int id, String summaryText, String overviewText) async {
    final exists = _taskList.any((item) => item['id'] == id);
    if (!exists) {
      _isTask = false;
      _executeTask();
      return;
    }
    await SqfliteApi.editMeeting(id, {
      'tasktype': 3,
      'summary': summaryText,
      'overview': overviewText,
    });

    // 更新 V1 Service 状态
    if (id == _taskService.meetingId) {
      summary = summaryText;
      overview = overviewText;
      _taskService.tasktype.value = 3;
    }

    // 更新 V2 Service 状态
    if (id == _taskService2.meetingId) {
      summary = summaryText;
      overview = overviewText;
      _taskService2.summary = summaryText;
      _taskService2.overview = overviewText;
      _taskService2.tasktype.value = 3;
    }

    // 更新 V1 任务完成列表
    Map taskFinishData = _taskService.taskFinishList.firstWhere(
      (element) => element['id'] == id,
      orElse: () => {},
    );
    if (taskFinishData.isNotEmpty) {
      taskFinishData['tasktype'] = 3;
      _taskService.taskFinishList.refresh();
    }
    _storage.write("meeting_task_finish_list", _taskService.taskFinishList);

    // 更新 V2 任务完成列表
    Map taskFinishData2 = _taskService2.taskFinishList.firstWhere(
      (element) => element['id'] == id,
      orElse: () => {},
    );
    if (taskFinishData2.isNotEmpty) {
      taskFinishData2['tasktype'] = 3;
      _taskService2.taskFinishList.refresh();
    }
    _storage.write("meeting_task_finish_list_v2", _taskService2.taskFinishList);

    _taskList.removeWhere((element) => element['id'] == id);
    _storage.write("summary_task_list", _taskList);
    _isTask = false;
    _executeTask();
    Logger.debug("总结任务完成");
  }
}