<!--
 * @Description:
 * @Autor: renchao
 * @LastEditTime: 2023-06-08 14:01:11
-->
<template>
  <div v-if="!item.hidden">
    <template
      v-if="hasOneShowingChild(item.children, item) && (!onlyOneChild.children || onlyOneChild.noShowingChildren)">
      <app-link v-if="onlyOneChild.meta" :to="resolvePath(onlyOneChild.path)">
        <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{ 'submenu-title-noDropdown': !isNest }">
          <item :icon="onlyOneChild.meta.icon || (item.meta && item.meta.icon)" :title="onlyOneChild.meta.title"
            class="menu-icon" />
        </el-menu-item>
      </app-link>
    </template>

    <el-submenu v-else ref="subMenu" :index="resolvePath(item.path)" popper-append-to-body>
      <template slot="title">
        <item v-if="item.meta" :icon="item.meta && item.meta.icon" :title="item.meta.title" />
      </template>
      <sidebar-item v-for="child in item.children" :key="child.path" :is-nest="true" :item="child"
        :base-path="resolvePath(child.path)" class="nest-menu" />
    </el-submenu>
  </div>
</template>

<script>
  import path from 'path'
  import { isExternal } from '@/utils/validate'
  import Item from './Item'
  import AppLink from './Link'
  import FixiOSBug from './FixiOSBug'

  export default {
    name: 'SidebarItem',
    components: { Item, AppLink },
    mixins: [FixiOSBug],
    props: {
      // route object
      item: {
        type: Object,
        required: true
      },
      isNest: {
        type: Boolean,
        default: false
      },
      basePath: {
        type: String,
        default: ''
      }
    },
    data () {
      // To fix https://github.com/PanJiaChen/vue-admin-template/issues/237
      // TODO: refactor with render function
      this.onlyOneChild = null
      return {}
    },
    methods: {
      /**
       * @description: hasOneShowingChild
       * @param {*} children
       * @param {*} parent
       * @author: renchao
       */
      hasOneShowingChild (children = [], parent) {
        const showingChildren = children.filter(item => {
          if (item.hidden) {
            return false
          } else {
            // Temp set(will be used if only has one showing child)
            this.onlyOneChild = item
            return true
          }
        })
        // When there is only one child router, the child router is displayed by default
        if (showingChildren.length >= 1 && (showingChildren[0].path == 'qxjr')) {
          return true
        }

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

        return false
      },
      /**
       * @description: resolvePath
       * @param {*} routePath
       * @author: renchao
       */
      resolvePath (routePath) {
        if (isExternal(routePath)) {
          return routePath
        }
        if (isExternal(this.basePath)) {
          return this.basePath
        }
        return path.resolve(this.basePath, routePath)
      }
    }
  }
</script>