<template>
  <div class="container">
    <!-- 查询配置 -->
    <div style="padding: 0px 20px">
      <div ref="lxHeader">
        <LxHeader icon="md-apps" text="停车年度统计报表" style="margin-bottom: 10px; border: 0px; margin-top: 15px">
          <div slot="content"></div>
          <slot>
            <div>
              <el-date-picker
                    v-model="searchFields.year"
                    type="year"
                    value-format="yyyy"
                    placeholder="选择年份">
              </el-date-picker>

              <Button type="primary" @click="load" style="margin-left: 10px">查询</Button>
              <Button type="primary" @click="viewPart" style="margin-left: 10px">{{btnText}}</Button>
              <Button type="primary" style="margin-left: 10px" @click="handleGo">导出</Button>
            </div>
          </slot>
        </LxHeader>
      </div>
      <div class="table-tree" v-if="showData">
        <el-table :data="tableData" :height="tableHeight" class="v-table" style="width: 100%">
          <el-table-column type="index" align="center">
          </el-table-column>
          <el-table-column prop="month" label="月份" sortable width="180">
          </el-table-column>
          <el-table-column prop="plan_total" label="预约车辆数" sortable>
          </el-table-column>
          <el-table-column prop="use_total" label="入场车辆数" sortable>
          </el-table-column>
          <el-table-column prop="cancel_total" label="取消车辆数" sortable>
          </el-table-column>
          <el-table-column prop="expire_total" label="过期车辆数" sortable>
          </el-table-column>
        </el-table>
      </div>
      <div v-else>
        <line-chart :chartData="rptData" :height="chartHeight"/>
      </div>
    </div>

  </div>
</template>
<script>
  import LxHeader from "@/components/LxHeader/index.vue";
  import LineChart from './components/LineChart'
  import { ElMapExportTable } from "table-excel";
  // import {export_json_to_excel} from '@/Excel/Export2Excel';
  import {
    carparkRpt
  } from "@/api/report/parking.js";
  export default {
    components: {
      LxHeader,
      LineChart
    },
    created() {
      this.initLoad()
      this.load()
    },
    mounted() {},
    data() {
      return {
        showData: false,
        searchFields: {
          year:""
        },
        tableData: [],
        tableHeight: 0,
        chartHeight:"",
        btnText:"数据展示",
        rptData: {
          xArr:[],
          series:{},
          legendArr:["预约人数","入场人数"]
        }
      }
    },
    methods: {
      /** 导出按钮操作 */
      handleGo(){
        var data = this.tableData; // 这里面是数据列表
        const column = [
          { title: "月份", dataIndex: "month" }, // dataIndex为数据列表中的数据字段
          { title: "预约车辆数", dataIndex: "plan_total" },
          { title: "入场车辆数", dataIndex: "use_total" },
        ];
        const instance = new ElMapExportTable(
          { column, data },
          { progress: progress => console.log(progress) }// 进度条回调
        );
        instance.download("停车年度统计报表"); // 导出的文件名
      },
      viewPart() {
        this.showData = !this.showData;
        this.btnText = this.showData ? "图表展示" : "数据展示"
      },
      initLoad() {
        var that = this;
        var clientHeight = document.documentElement.clientHeight
        var lxHeader_height = 96.5; //查询 头部
        var paginationHeight = 37; //分页的高度
        var topHeight = 50; //页面 头部
        let tableHeight = clientHeight - lxHeader_height - topHeight - paginationHeight - 20;
        that.tableHeight = tableHeight;
        that.chartHeight = tableHeight+"px"

      },
      load() {
        // this.showData = true;
        var xarr = [];
        var planarr=[];
        var usearr=[];
        carparkRpt({
          year:this.searchFields.year
        }).then((res) => {
          for (var m of res) {
            m.month =  m.month+"月";
            xarr.push(m.month);
            planarr.push(
              m.plan_total
            )
            usearr.push(
              m.use_total
            )
          }

          this.rptData.xArr = xarr;
          this.rptData.series=[
            {
              name:"预约车辆数",
              type: 'bar',
              data:planarr
            },
            {
              name:"入场车辆数",
              type: 'bar',
              data:usearr
            }

          ]
          this.tableData = res;
        }).catch((res) => {})
      }

    }
  };
</script>
