<template>
  <template v-if="!item.hidden">
    <template v-if="hasOneShowingChild(item.children, item) && (!onlyOneChild.children || onlyOneChild.noShowingChildren) && !item.alwaysShow">
      <app-link v-if="onlyOneChild.meta" :data="item" :to="resolvePath(onlyOneChild.path, onlyOneChild.query)">
        <el-menu-item :index="resolvePath(onlyOneChild.path)">
          <svg-icon class="menu-icon" :name="onlyOneChild.meta.icon || (item.meta && item.meta.icon)" />
          <span v-if="props.isCollapse && !onlyOneChild.meta.icon">{{ hasTitle2(onlyOneChild.meta.title) }}</span>
          <template #title>
            <span v-if="onlyOneChild.meta.titleKey">{{ $t(onlyOneChild.meta.titleKey) }}</span>
            <span v-else-if="onlyOneChild.meta.title">{{ onlyOneChild.meta.title }}</span>
            <svg-icon
              name="new"
              color="#fff"
              style="width: 50px; height: 25px"
              v-if="onlyOneChild.meta.title && onlyOneChild.meta.isNew == 1 && defaultSettings.menuShowNew" />
          </template>
        </el-menu-item>
      </app-link>
    </template>

    <el-sub-menu v-else ref="subMenu" :index="resolvePath(item.path)">
      <template #title>
        <svg-icon class="menu-icon" :name="item.meta && item.meta.icon" />
        <span v-if="item.meta && item.meta.titleKey">{{ $t(item.meta.titleKey) }}</span>
        <span v-else-if="item.meta && item.meta.title">{{ item.meta.title }}</span>
        <svg-icon
          name="new"
          color="#fff"
          style="width: 50px; height: 25px"
          v-if="item.meta.title && item.meta.isNew == 1 && defaultSettings.menuShowNew" />
      </template>

      <sidebar-item
        v-for="(child, index) in item.children"
        :key="child.path + index"
        :is-nest="true"
        :item="child"
        :base-path="resolvePath(child.path)" />
    </el-sub-menu>
  </template>
</template>

<script setup>
import { isExternal } from '@/utils/validate'
import AppLink from './Link'
import { getNormalPath } from '@/utils/ruoyi'
import defaultSettings from '@/settings'
const props = defineProps({
  // route object
  item: {
    type: Object,
    required: true
  },
  isNest: {
    type: Boolean,
    default: false
  },
  basePath: {
    type: String,
    default: ''
  },
  isCollapse: {
    type: Boolean,
    default: false
  }
})

const onlyOneChild = ref({})

function hasOneShowingChild(children = [], parent) {
  if (!children) {
    children = []
  }
  const showingChildren = children.filter((item) => {
    if (item.hidden) {
      return false
    } else {
      // Temp set(will be used if only has one showing child)
      onlyOneChild.value = item
      return true
    }
  })

  // When there is only one child router, the child router is displayed by default
  if (showingChildren.length === 1) {
    return true
  }

  // Show parent if there are no child router to display
  if (showingChildren.length === 0) {
    onlyOneChild.value = { ...parent, path: '', noShowingChildren: true }
    return true
  }

  return false
}

function resolvePath(routePath, routeQuery) {
  if (isExternal(routePath)) {
    return routePath
  }
  if (isExternal(props.basePath)) {
    return props.basePath
  }
  if (routeQuery) {
    console.log(`路由参数${routePath}-${routeQuery}`)
    let query = JSON.parse(routeQuery)
    return {
      path: getNormalPath(props.basePath + '/' + routePath),
      query: query
    }
  }
  return getNormalPath(props.basePath + '/' + routePath)
}

function hasTitle2(title) {
  if (title.length >= 1) {
    return title.charAt(0) + '...'
  } else {
    return ''
  }
}
</script>
