import { onBeforeUnmount, provide, ref } from 'vue'
import { useRoute } from 'vue-router'
import { isArray } from '@cip/utils/util'

// 菜单徽标hook
/**
 * 定时更新时间
 * @param timer 为0时不进行更新 单位ms
 * @return {{badgeMap: ToRef<{}>, badgeFnMap: ToRef<{}>, collectBadgeFn: collectBadgeFn, consumptionBadgeFn: ((function(*): Promise<void>)|*)}}
 */
export const useBadge = (times) => {
  const badgeMap = ref({}) // 徽标key-value关系
  const badgeFnMap = ref({}) // 徽标key-fn关系
  const collectBadgeFn = (menu = [], { key, fnKey, childrenKey = 'children' }) => {
    menu.forEach(item => {
      const fn = item?.[fnKey]
      if (typeof fn === 'function') {
        badgeFnMap.value[item[key]] = { fn, used: false, privilege: false }
      }
      const children = item[childrenKey]
      if (isArray(children)) {
        collectBadgeFn(children, { key, fnKey, childrenKey })
      }
    })
  }
  // 定时更新时使用
  const resetComputed = () => {
    Object.keys(badgeFnMap.value).forEach(key => {
      badgeFnMap.value[key].used = false
      // !!!有权限的菜单的badge方法才会执行
      if (badgeFnMap.value[key].privilege) {
        consumptionBadgeFn(key)
      }
    })
  }
  if (times > 0) {
    const timer = setInterval(() => {
      resetComputed()
    }, times)
    onBeforeUnmount(() => {
      clearInterval(timer)
    })
  }

  const consumptionBadgeFn = async (key) => {
    const badgeFn = badgeFnMap.value?.[key]
    if (badgeFn && !badgeFn.used) {
      badgeFn.used = true // 删除防止多次触发
      badgeFn.privilege = true // 触发过一次及判断为拥有权限
      const total = await badgeFn.fn()
      badgeMap.value[key] = total
    }
  }

  const setBadge = (key, badge) => {
    badgeMap.value[key] = badge
  }
  // 子孙组件直接修改徽标
  provide('setBadge', setBadge)
  const refreshBadge = (key) => {
    const badgeFn = badgeFnMap.value?.[key]
    if (badgeFn) {
      badgeFn.used = false // 先把used设置为false才能触发更新
      consumptionBadgeFn(key)
    }
  }
  // 子孙组件根据触发修改徽标
  provide('refreshBadge', refreshBadge)
  return {
    badgeMap,
    badgeFnMap,
    collectBadgeFn,
    consumptionBadgeFn
  }
}

export const useMenuTitle = () => {
  const route = useRoute()

  const menuNameMap = ref(new Map()) // name 与 title 的关系
  const menuPathMap = ref({}) // fullPath 与 title 的关系

  const setCurrentTitle = (title) => {
    setTitle(route.fullPath, route.name, title)
  }

  const setTitle = (fullPath, name, title) => {
    menuNameMap.value.set(name, title)
    menuPathMap.value[fullPath] = title
  }

  // 兼容老代码[addMenuName]不建议再使用
  provide('addMenuName', setCurrentTitle)
  provide('setCurrentTitle', setCurrentTitle)
  provide('setTitle', setTitle)
  return {
    menuNameMap,
    menuPathMap
  }
}