<script>
export default {
  name: 'MenuItem',
  functional: true,
  props: {
    icon: {
      type: String,
      default: ''
    },
    title: {
      type: String,
      default: ''
    }
  },
  render(h, context) {
    const { icon, title } = context.props
    const vnodes = []
    if (icon) {
      vnodes.push(<svg-icon icon-class={icon}/>)
    }
    if (title) {
      vnodes.push(<span class="sidebarSpan" slot='title'>{(title)}</span>)
    }
    return vnodes
  }
}
</script>
<style scoped>
  .sidebarSpan{
    font-size: 17px;
    font-family: “Arial”,”Microsoft YaHei”,”黑体”,”宋体”,sans-serif;
    font-weight: bold;
  }
</style>

<template>
  <el-breadcrumb class="app-breadcrumb" separator="/">
    <transition-group name="breadcrumb">
      <el-breadcrumb-item v-for="(item,index) in levelList" v-if="item.meta.title" :key="item.path">
        <span v-if="item.redirect==='noredirect'||index==levelList.length-1" class="no-redirect">{{ item.meta.title }}</span>
        <a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
      </el-breadcrumb-item>
    </transition-group>
  </el-breadcrumb>
</template>
<script>
import pathToRegexp from 'path-to-regexp'
export default {
  data() {
    return {
      levelList: null
    }
  },
  watch: {
    $route() {
      this.getBreadcrumb()
    }
  },
  created() {
    this.getBreadcrumb()
  },
  methods: {
    getBreadcrumb() {
      let matched = this.$route.matched.filter(item => {
        if (item.name) {
          return true
        }
      })
      const first = matched[0]
      // if (first && first.name !== 'dashboard') {
      //   matched = [{ path: '/dashboard', meta: { title: '多箱装箱测试系统' }}].concat(matched)
      // }
      this.levelList = matched
    },
    pathCompile(path) {
      // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
      const { params } = this.$route
      var toPath = pathToRegexp.compile(path)
      return toPath(params)
    },
    handleLink(item) {
      const { redirect, path } = item
      if (redirect) {
        this.$router.push(redirect)
        return
      }
      this.$router.push(this.pathCompile(path))
    }
  }
}
</script>
<style rel="stylesheet/scss" lang="scss" scoped>
  .app-breadcrumb.el-breadcrumb {
    display: inline-block;
    font-size: 14px;
    line-height: 50px;
    margin-left: 10px;
    .no-redirect {
      color: #000000;
      cursor: text;
      font-size: 17px;
      font-family: “Arial”,”Microsoft YaHei”,”黑体”,”宋体”,sans-serif;
      font-weight: bold;
    }
  }
</style>