<template>
  <div style="background: #ececec; padding: 25px">
    <a-card title="按学院分析" :loading="loading" :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: 100%; 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'
      },
      loading: false,
      collegeOptions: [],
      batchOptions: [],
      levelOptions: [
        { value: 'cet4', label: '英语四级' },
        { value: 'cet6', label: '英语六级' }
      ],
      level: null,
      college: null,
      batch: null
    };
  },
  methods: {
    dataChart(data) {
      let xData = [];
      let yData = [];
      for (let key in data) {
        xData.push(key);
        // 将数据转换为百分比（加上%）
        yData.push((data[key] * 100).toFixed(2));
      }
      let myChart = echarts.init(document.getElementById("map1"));
      // 指定图表的配置项和数据
      let option = {
        title: {
          text: "本批次学院通过率排名",
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'shadow'
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            type: 'category',
            data: xData,
            axisTick: {
              alignWithLabel: true
            }
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ],
        series: [
          {
            name: 'Direct',
            type: 'bar',
            barWidth: '60%',
            data: yData
          }
        ]
      };
      // 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 });
      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 data = null;
      try {
        this.loading = true;
        let params = {
          batch: this.batch,
          level: 'cet4'
        }
        data = await defHttp.get({ url: this.Url.getRate, params });
      } finally {
        this.loading = false;
        this.$nextTick(() => {
          this.dataChart(data);
        })
      }
    }
  },
  mounted() {
    this.getBatch();
  }

}
</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>
