import { ref, watch, onUnmounted } from 'vue'
import { storeToRefs } from 'pinia'
import { useRootStore } from '@/stores/root'

export const useHandleScreen = (callback: () => void) => {
  const MIN_TIME = 0
  const MAX_TIME = 5
  const CHECK_TIME = 1000
  const DELAY_CHECK_TIME = 400
  const title = '即将进入屏幕保护'

  const store = useRootStore()
  const { nativeMethods, backTime } = storeToRefs(store)

  const toWallpaperTime = ref(backTime.value[1]) //回屏保的时间
  const isWallpaper = ref(false) //回首页是否已经跑完
  const showCountDownDialog = ref(false)
  let toWallpaperInterval: any
  let delayCheckRoutePathTimer: any

  function sleepToWallpaper() {
    isWallpaper.value = true
    return new Promise<void>(resolve => {
      toWallpaperInterval = setInterval(() => {
        toWallpaperTime.value--
        if (toWallpaperTime.value <= MIN_TIME) {
          clearInterval(toWallpaperInterval)
          toWallpaperTime.value = backTime.value[1]
          isWallpaper.value = false
          resolve()
        }
      }, CHECK_TIME)
    })
  }

  function clearTimers() {
    clearInterval(toWallpaperInterval)
    clearTimeout(delayCheckRoutePathTimer)
  }

  //跳转屏保挂载到全局 原生app使用
  window.leaveScreenSave = () => {
    checkHandleScreen()
  }

  function checkHandleScreen() {
    toWallpaperTime.value = backTime.value[1]

    clearTimers()

    delayCheckRoutePathTimer = setTimeout(async () => {
      try {
        //没有屏保
        if (backTime.value[1] < 0) {
          return
        }
        await sleepToWallpaper()
        callback()
        nativeMethods.value?.goScreenSave()
      } catch (error) {
        clearTimers()
      }
    }, DELAY_CHECK_TIME)
  }

  //监听时间 大于等于0且小于等于5时显示弹框
  const stopHandler = watch(toWallpaperTime, wallpaperTime => {
    showCountDownDialog.value = wallpaperTime >= MIN_TIME && wallpaperTime <= MAX_TIME
  })

  const stopCheckHandleScreenHandler = watch(
    backTime,
    () => {
      checkHandleScreen()
    },
    { immediate: true }
  )

  onUnmounted(() => {
    clearTimers()
    stopHandler()
    stopCheckHandleScreenHandler()
    toWallpaperInterval = null
    delayCheckRoutePathTimer = null
  })

  return {
    checkHandleScreen,
    showCountDownDialog,
    title,
    toWallpaperTime
  }
}