<template>
  <div>
    <div id="chart">
      <apexchart
        type="sunburst"
        height="480"
        :options="chartOptions"
        :series="series"
      ></apexchart>
    </div>
  </div>
</template>

<script>
import VueApexCharts from 'vue-apexcharts'

// A sunburst reads the SAME `series` + `drilldown.series` config a drilldown
// donut uses, so an existing drilldown chart becomes a sunburst by flipping
// `chart.type`. Each level is tinted with shades of its parent slice's hue.
var deviceColors = ['#1565C0', '#2E7D32', '#EF6C00'] // Mobile / Desktop / Tablet
var mobileOsColors = ['#0D47A1', '#1976D2', '#64B5F6'] // Mobile by OS
var iosColors = ['#1565C0', '#42A5F5', '#90CAF9'] // iOS versions
var desktopOsColors = ['#1B5E20', '#388E3C', '#66BB6A'] // Desktop by OS
var tabletOsColors = ['#E65100', '#FB8C00'] // Tablet by OS

export default {
  components: {
    apexchart: VueApexCharts,
  },
  data: function () {
    return {
      series: [
        {
          name: 'Devices',
          data: [
            { x: 'Mobile', y: 55, drilldown: 'mobile' },
            { x: 'Desktop', y: 33, drilldown: 'desktop' },
            { x: 'Tablet', y: 12, drilldown: 'tablet' },
          ],
        },
      ],
      chartOptions: {
        chart: {
          type: 'sunburst',
          height: 480,
        },
        colors: deviceColors,
        legend: {
          position: 'bottom',
        },
        title: {
          text: 'Website traffic by device',
          align: 'left',
        },
        subtitle: {
          text: 'The same series + drilldown.series config as a drilldown donut, rendered as one sunburst.',
          align: 'left',
        },
        plotOptions: {
          sunburst: {
            innerSize: '20%',
          },
        },
        stroke: {
          width: 1,
          colors: ['#fff'],
        },
        drilldown: {
          series: [
            {
              id: 'mobile',
              name: 'Mobile by OS',
              colors: mobileOsColors,
              data: [
                { x: 'iOS', y: 30, drilldown: 'mobile-ios' },
                { x: 'Android', y: 23 },
                { x: 'Other', y: 2 },
              ],
            },
            {
              id: 'mobile-ios',
              name: 'iOS Versions',
              colors: iosColors,
              data: [
                { x: 'iOS 17', y: 18 },
                { x: 'iOS 16', y: 9 },
                { x: 'iOS 15', y: 3 },
              ],
            },
            {
              id: 'desktop',
              name: 'Desktop by OS',
              colors: desktopOsColors,
              data: [
                { x: 'Windows', y: 20 },
                { x: 'macOS', y: 10 },
                { x: 'Linux', y: 3 },
              ],
            },
            {
              id: 'tablet',
              name: 'Tablet by OS',
              colors: tabletOsColors,
              data: [
                { x: 'iPadOS', y: 8 },
                { x: 'Android', y: 4 },
              ],
            },
          ],
        },
      },
    }
  },
}
</script>

<style>
#chart {
  max-width: 520px;
  margin: 35px auto;
}
</style>