<template>
  <div>
    <div id="chart">
      <apexchart
        type="bar"
        height="420"
        :options="chartOptions"
        :series="series"
      ></apexchart>
    </div>
  </div>
</template>

<script>
import VueApexCharts from 'vue-apexcharts'

export default {
  components: {
    apexchart: VueApexCharts,
  },
  data: function () {
    return {
      series: [
        {
          name: 'Revenue',
          data: [
            { x: '2021', y: 480, drilldown: '2021' },
            { x: '2022', y: 530, drilldown: '2022' },
            { x: '2023', y: 610, drilldown: '2023' },
            { x: '2024', y: 705, drilldown: '2024' },
          ],
        },
      ],
      chartOptions: {
        chart: {
          type: 'bar',
          height: 420,
          toolbar: {
            show: false,
          },
        },
        plotOptions: {
          bar: {
            distributed: true,
            columnWidth: '55%',
            borderRadius: 6,
            borderRadiusApplication: 'end',
          },
        },
        legend: {
          show: false,
        },
        dataLabels: {
          enabled: false,
        },
        colors: ['#1565C0', '#2E7D32', '#EF6C00', '#6A1B9A'],
        title: {
          text: 'Revenue by Year',
          align: 'left',
        },
        subtitle: {
          text: 'Click a year: its quarterly breakdown unfolds outward from the column you click. Use the breadcrumb to go back.',
          align: 'left',
        },
        yaxis: {
          title: {
            text: 'Revenue ($k)',
          },
        },
        drilldown: {
          enabled: true,
          // Anchor the drill transition at the clicked column: the child's bars unfold
          // outward from that column rather than the chart simply re-rendering.
          animation: {
            enabled: true,
            zoomFromPoint: true,
            speed: 260,
          },
          breadcrumb: {
            show: true,
            position: 'top-right',
            rootLabel: 'All Years',
            separator: ' / ',
          },
          series: [
            {
              id: '2021',
              name: '2021 by Quarter',
              data: [
                { x: 'Q1', y: 105 },
                { x: 'Q2', y: 118 },
                { x: 'Q3', y: 125 },
                { x: 'Q4', y: 132 },
              ],
            },
            {
              id: '2022',
              name: '2022 by Quarter',
              data: [
                { x: 'Q1', y: 121 },
                { x: 'Q2', y: 130 },
                { x: 'Q3', y: 138 },
                { x: 'Q4', y: 141 },
              ],
            },
            {
              id: '2023',
              name: '2023 by Quarter',
              data: [
                { x: 'Q1', y: 140 },
                { x: 'Q2', y: 152 },
                { x: 'Q3', y: 158 },
                { x: 'Q4', y: 160 },
              ],
            },
            {
              id: '2024',
              name: '2024 by Quarter',
              data: [
                { x: 'Q1', y: 165 },
                { x: 'Q2', y: 174 },
                { x: 'Q3', y: 182 },
                { x: 'Q4', y: 184 },
              ],
            },
          ],
        },
      },
    }
  },
}
</script>

<style>
#chart {
  max-width: 650px;
  margin: 35px auto;
}
</style>