<template>
  <v-chart class="chart" :option="option" autoresize />
</template>

<script lang="ts" setup>
import { use } from 'echarts/core';
import { SVGRenderer } from 'echarts/renderers';
import { PieChart } from 'echarts/charts';
import { TitleComponent, TooltipComponent, LegendComponent } from 'echarts/components';
import VChart, { THEME_KEY } from 'vue-echarts';
import { watch, provide, reactive } from 'vue';
use([SVGRenderer, PieChart, TitleComponent, TooltipComponent, LegendComponent]);

const props = defineProps({
  title: {
    type: String,
    default: '标题'
  },
  seriesName: {
    type: String,
    default: '详情'
  },
  seriesData: {
    type: Array,
    default: () => []
  }
});

const option = reactive({
  title: {
    text: props.title,
    left: 'center'
  },
  tooltip: {
    trigger: 'item',
    formatter: '{a} <br/>{b} : {c} ({d}%)'
  },
  legend: {
    orient: 'vertical',
    left: 'left'
  },
  series: [
    {
      name: props.seriesName,
      type: 'pie',
      radius: '55%',
      center: ['50%', '60%'],
      data: props.seriesData,
      emphasis: {
        itemStyle: {
          shadowBlur: 10,
          shadowOffsetX: 0,
          shadowColor: 'rgba(0, 0, 0, 0.5)'
        }
      }
    }
  ]
});
watch(props, (new_val) => {
  option.title.text = new_val.title;
  option.series[0].name = new_val.seriesName;
  option.series[0].data = new_val.seriesData;
});
</script>

<style scoped>
.chart {
  height: 100%;
  width: 100%;
}
</style>
