<template>
  <div class="app-container calendar-list-container">

    <el-table :data="list" v-loading.body="listLoading" border fit highlight-current-row style="width: 100%">

      <el-table-column align="center" label="序号" width="65">
        <template scope="scope">
          <span>{{scope.row.id}}</span>
        </template>
      </el-table-column>

      <el-table-column width="180px" align="center" label="时间">
        <template scope="scope">
          <span>{{scope.row.timestamp | parseTime('{y}-{m}-{d} {h}:{i}')}}</span>
        </template>
      </el-table-column>

      <el-table-column min-width="300px" label="标题">
        <template scope="scope">
          <span>{{scope.row.title}}</span>
        </template>
      </el-table-column>

      <el-table-column width="110px" align="center" label="作者">
        <template scope="scope">
          <span>{{scope.row.author}}</span>
        </template>
      </el-table-column>

      <el-table-column width="80px" label="重要性">
        <template scope="scope">
          <icon-svg v-for="n in +scope.row.importance" icon-class="star" class="meta-item__icon" :key="n"></icon-svg>
        </template>
      </el-table-column>

      <el-table-column align="center" label="阅读数" width="95">
        <template scope="scope">
          <span>{{scope.row.pageviews}}</span>
        </template>
      </el-table-column>

      <el-table-column class-name="status-col" label="状态" width="90">
        <template scope="scope">
          <el-tag :type="scope.row.status | statusFilter">{{scope.row.status}}</el-tag>
        </template>
      </el-table-column>

      <el-table-column align="center" label="拖拽" width="95">
        <template scope="scope">
          <icon-svg class='drag-handler' icon-class="drag"></icon-svg>
        </template>
      </el-table-column>

    </el-table>

    <div class='show-d'>默认顺序 &nbsp; {{ olderList}}</div>
    <div class='show-d'>拖拽后顺序{{newList}}</div>

  </div>
</template>

<script>
import { fetchList } from '@/api/article'
import Sortable from 'sortablejs'

export default {
  name: 'drag-table_demo',
  data() {
    return {
      list: null,
      total: null,
      listLoading: true,
      listQuery: {
        page: 1,
        limit: 10
      },
      sortable: null,
      olderList: [],
      newList: []
    }
  },
  filters: {
    statusFilter(status) {
      const statusMap = {
        published: 'success',
        draft: 'gray',
        deleted: 'danger'
      }
      return statusMap[status]
    }
  },
  created() {
    this.getList()
  },
  methods: {
    getList() {
      this.listLoading = true
      fetchList(this.listQuery).then(response => {
        this.list = response.data.items
        this.total = response.data.total
        this.listLoading = false
        this.olderList = this.list.map(v => v.id)
        this.newList = this.olderList.slice()
        this.$nextTick(() => {
          this.setSort()
        })
      })
    },
    setSort() {
      const el = document.querySelectorAll('.el-table__body-wrapper > table > tbody')[0]
      this.sortable = Sortable.create(el, {
        onEnd: evt => {
          const tempIndex = this.newList.splice(evt.oldIndex, 1)[0]
          this.newList.splice(evt.newIndex, 0, tempIndex)
        }
      })
    }
  }
}
</script>

<style scoped>
.drag-handler{
  width: 30px;
  height: 30px;
  cursor: pointer;
}
.show-d{
  margin-top: 15px;
}
</style>
