import { common } from '@kit.AbilityKit';
import { notificationManager } from '@kit.NotificationKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { YTLog } from '../../../../Index';
import { pushService } from '@kit.PushKit';
import { userInfo } from '../models/UserInfo';

class PushMessageUtil {
  private static instance: PushMessageUtil
  private isFirstRequestPermission: boolean = true
  private declare context: common.UIAbilityContext
  private readonly setDataPersistenceKey: string = 'setDataPersistenceKey'

  private constructor() {
  }

  static getInstance() {
    if (!PushMessageUtil.instance) {
      PushMessageUtil.instance = new PushMessageUtil()
    }
    return PushMessageUtil.instance
  }

  init(context: common.UIAbilityContext) {
    PersistentStorage.persistProp<boolean>(this.setDataPersistenceKey, this.isFirstRequestPermission)
    this.context = context
    this.isFirstRequestPermission = AppStorage.get<boolean>(this.setDataPersistenceKey) ?? true
  }

  //请求权限+推送token
  pushMessage(success: () => void) {
    notificationManager.isNotificationEnabled((err, enable) => {
      if (enable && !err) {
        //像后端推送pushToken
        this.pushToken(success)
      } else {
        if (this.isFirstRequestPermission) {
          notificationManager.requestEnableNotification(this.context)
            .then(() => {
              this.pushToken(success)
            })
            .catch((err: BusinessError) => {
              if (1600004 == err.code) {
                YTLog.error("requestEnableNotification refused" + err.code)
              } else {
                YTLog.error("requestEnableNotification failed:" + err.code + err.message)
              }
            })
            .finally(() => {
              this.isFirstRequestPermission = false
            })
        } else {
          notificationManager.openNotificationSettings(this.context)
            .then(() => {
              this.pushMessage(success)
            })
            .catch((err: BusinessError) => {
              if (1600004 == err.code) {
                YTLog.error("requestEnableNotification refused" + err.code)
              } else {
                YTLog.error("requestEnableNotification failed:" + err.code + err.message)
              }
            });

        }
      }
    })
  }

  private pushToken(success: () => void) {
    pushService.getToken((err, token) => {
      if (token && !err) {
        userInfo.setPushToken(token).pushPushTokenToBackEnd(success)
      } else {
        YTLog.error(err)
      }
    });
  }
}

export const pushMessageUtil = PushMessageUtil.getInstance()