import React from 'react'
import ReactApexChart from 'react-apexcharts'
import './styles.css'

// This demo also loads: https://cdn.jsdelivr.net/npm/apexcharts/dist/unit-shapes.js

const ApexChart = () => {
  const [state, setState] = React.useState({
    series: [28800, 8400, 2100, 1700],
    options: {
      chart: {
        type: 'unit',
        height: 470,
        animations: {
          enabled: true,
          speed: 900,
        },
      },
      labels: ['Oak', 'Silver birch', 'Rowan', 'Wild cherry'],
      // Green where the canopy is dense, then earth tones for the smaller species:
      // four greens would be a single unreadable mass at this dot size, while green
      // plus ochre plus bark keeps the tree looking like a tree.
      colors: ['#2E7D32', '#7CB342', '#C9A227', '#8D6E63'],
      plotOptions: {
        unit: {
          layout: 'custom',
          // One of the shapes in apexcharts/unit-shapes.
          positions: 'tree',
          transition: 'flow',
          unitValue: 50,
          clusterLabels: {
            external: {
              show: true,
            },
          },
        },
      },
      legend: {
        show: false,
      },
    },
  })

  return (
    <div>
      <div className="wrap">
        <h1>41,000 saplings, one dot per 50</h1>
        <p>
          A lobed canopy over a flared trunk, packed with dots. The outline is
          two overlapping subpaths, which the layout unions before it packs, so
          a canopy with nine bumps and a trunk with roots is one shape rather
          than a circle balanced on a rectangle.
        </p>

        <div className="chart-wrap">
          <div id="chart">
            <ReactApexChart
              options={state.options}
              series={state.series}
              type="unit"
              height={470}
            />
          </div>
        </div>

        <p className="note">1 dot = 50 saplings planted this season</p>
      </div>
    </div>
  )
}

export default ApexChart