<template>
  <div class="my-L-breadcrumb">
    <el-breadcrumb class="app-breadcrumb" separator="/">
      <transition-group name="breadcrumb">
        <el-breadcrumb-item v-for="(item, index) in levelList" :key="item.path">
          <span
            v-if="item.redirect === 'noRedirect' || index == levelList.length - 1"
            class="no-redirect"
            :class="index == levelList.length - 1 ? 'lastItem' : ''"
            >{{ item.meta.title }}</span
          >
          <a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
        </el-breadcrumb-item>
      </transition-group>
    </el-breadcrumb>
    <!-- <i class="icon iconfont icon-jc-55fanhui" @click="back" v-show="$route.meta.title == '项目详情'"></i> -->
    <el-button
      type="primary"
      v-show="$route.meta.title == '项目详情'"
      icon="icon iconfont icon-jc-55fanhui"
      size="mini"
      @click="back"
    >返回</el-button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      levelList: null,
    };
  },
  watch: {
    $route(route) {
      // if you go to the redirect page, do not update the breadcrumbs
      if (route.path.startsWith("/redirect/")) {
        return;
      }
      this.getBreadcrumb();
    },
  },
  created() {
    this.getBreadcrumb();
  },
  methods: {
    getBreadcrumb() {
      // only show routes with meta.title
      let matched = this.$route.matched.filter(
        (item) => item.meta && item.meta.title
      );
      const first = matched[0];

      // if (!this.isDashboard(first)) {
      //   matched = [{ path: "/index", meta: { title: "首页" } }].concat(matched);
      // }
      this.levelList = matched.filter(
        (item) => item.meta && item.meta.title && item.meta.title != '项目列表' && item.meta.breadcrumb !== false
      );
    },
    isDashboard(route) {
      const name = route && route.name;
      if (!name) {
        return false;
      }
      return name.trim() === "Index";
    },
    handleLink(item) {
      const { redirect, path } = item;
      if (redirect) {
        this.$router.push(redirect);
        return;
      }
      this.$router.push(path);
    },
    // 返回到项目库页面
    back(){
      this.$router.replace({path: '/project/index'})
    },
  },
};
</script>

<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
  height: 100%;
  display: flex;
  align-items: center;
  font-size: 14px;

  margin-left: 8px;

  .no-redirect {
    color: #000;
    cursor: text;
  }
}
.lastItem {
  font-weight: 600;
}
</style>
