<template>
  <div ref="chartRef" :style="{ height, width }"></div>
</template>
<script lang="ts">
  import { defineComponent, PropType, ref, Ref, reactive, watchEffect, watch } from 'vue';
  import { useECharts } from '@/hooks/web/useECharts';

  export default defineComponent({
    name: 'StackBar',
    props: {
      chartData: {
        type: Array,
        default: () => [],
        required: true,
      },
      size: {
        type: Object,
        default: () => {},
      },
      option: {
        type: Object,
        default: () => ({}),
      },
      type: {
        type: String as PropType<string>,
        default: 'bar',
      },
      width: {
        type: String as PropType<string>,
        default: '100%',
      },
      height: {
        type: String as PropType<string>,
        default: 'calc(100vh - 78px)',
      },
    },
    setup(props) {
      const chartRef = ref<HTMLDivElement | null>(null);
      const { setOptions, echarts, resize } = useECharts(chartRef as Ref<HTMLDivElement>);
      const option = reactive({
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'shadow',
            label: {
              show: true,
              backgroundColor: '#333',
            },
          },
        },
        legend: {
          top: 30,
        },
        grid: {
          top: 60,
        },
        xAxis: {
          type: 'value',
        },
        yAxis: {
          type: 'category',
          data: [],
        },
        series: [],
      });

      watchEffect(() => {
        props.chartData && initCharts();
      });
      /**
       * 监听拖拽大小变化
       */
      watch(
        () => props.size,
        () => {
          console.log('props.size', props.size);
          resize();
        },
        {
          immediate: true,
        }
      );
      function initCharts() {
        if (props.option) {
          Object.assign(option, props.option);
        }
        //图例类型
        let typeArr = Array.from(new Set(props.chartData.map((item) => item.type)));
        //轴数据
        let yAxisData = Array.from(new Set(props.chartData.map((item) => item.name)));
        let seriesData = [];
        typeArr.forEach((type) => {
          let obj = { name: type, type: props.type, stack: 'total' };
          let chartArr = props.chartData.filter((item) => type === item.type);
          //data数据
          obj['data'] = chartArr.map((item) => item.value);
          seriesData.push(obj);
        });
        option.series = seriesData;
        option.yAxis.data = yAxisData;
        setOptions(option);
      }

      return { chartRef };
    },
  });
</script>
