<template>
  <div style="background: #ececec; padding: 25px">
    <a-card title="按学院分析" :bordered="false">
      <template #extra>
        <!-- <a-select v-model:value="college" style="width: 300px" :options="collegeOptions"></a-select> -->
        <a-select v-model:value="batch" style="margin-left: 10px;width: 120px" :options="batchOptions"></a-select>
        <!-- <a-select v-model:value="level" style="margin-left: 10px;width: 120px" :options="levelOptions"></a-select> -->
        <a-button style="margin-left: 10px;" type="primary" @click="query">查询</a-button>
      </template>
      <a-row :gutter="24">
        <a-col :xl="24" :style="{ marginBottom: '24px' }">
          <div class="container">
            <div id="map1" style="width: 660px; height: 400px;"></div>
          </div>
        </a-col>
      </a-row>
    </a-card>
  </div>
</template>

<script>
import { defHttp } from '/@/utils/http/axios';
import * as echarts from 'echarts';

export default {
  name: "Analysis",
  data() {
    return {
      Url: {
        getBatch: '/cet/getBatch',
        getCollege: '/cet/getCollege',
        getRate: '/cet/getRateByBatch'
      },
      collegeOptions: [],
      batchOptions: [],
      levelOptions: [
        { value: 'cet4', label: '英语四级' },
        { value: 'cet6', label: '英语六级' }
      ],
      level: null,
      college: null,
      batch: null
    };
  },
  methods: {
    map1Chart() {
      // 基于准备好的dom，初始化echarts实例  这个和上面的main对应
      let myChart = echarts.init(document.getElementById("map1"));
      // 指定图表的配置项和数据
      let option = {
        title: {
          text: "总上座人数对比",
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'shadow'
          }
        },
        legend: {
          data: ["英国", "中国"],//上方的标签
        },
        xAxis: {
          data: ["一级", "二级", "三级", "四级"],
          axisLabel: {
            interval: 0,
            // rotate: 30
          }
        },
        yAxis: {
          name: '总上座人数(万)',
        },
        series: [
          {
            name: "英国",
            type: "bar",
            data: [1450, 1100, 450, 300],
            label: {
              formatter: '{@value}'
            }
          },
          {
            name: "中国",
            type: "bar",
            data: [552, 180, 200, 0],
            label: {
              formatter: '{@value}'
            }
          },
        ],
      };
      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(option);
    },
    // 获取批次数据
    async getBatch() {
      const getBatch = await defHttp.get({ url: this.Url.getBatch });
      // const getCollege = await defHttp.get({ url: this.Url.getCollege });

      // this.collegeOptions = getCollege.colleges;
      // 手动添加一个全校字段
      // this.collegeOptions.unshift({ value: '全校', label: '全校' });
      // this.college = this.collegeOptions[0].value;

      this.batchOptions = getBatch.batches;
      this.batch = this.batchOptions[0].value;
      this.level = this.levelOptions[0].value;

      // this.query();
    },
    // 查询数据
    async query() {
      let params = {
        batch: this.batch,
        level: 'cet4'
      }
      const data = await defHttp.get({ url: this.Url.getRate, params });
      this.$message.info(`查询结果：${JSON.stringify(data)}`);
    }
  },
  mounted() {
    this.getBatch();
    this.map1Chart();
  }

}
</script>

<style lang="less" scoped>
.container {
  display: flex;
  background-color: #fff;
  padding: 15px;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.09);
}

.title {
  font-size: 34px;
  color: rgb(8, 8, 8);
  font-weight: bold;
}
</style>
