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

import 'apexcharts/features/raincloud'

// Raw observations per group (Box-Muller Gaussian; Math.random is seeded by
// the sample template). One group is deliberately bimodal: the cloud shows
// the two modes that the box alone would hide, which is the whole point of
// stacking all three layers.
function sample(mean, sd, n) {
  var points = []
  for (var k = 0; k < n; k++) {
    var u1 = Math.random(),
      u2 = Math.random()
    var g = Math.sqrt(-2 * Math.log(u1)) * Math.cos(2 * Math.PI * u2)
    points.push(Math.round((mean + g * sd) * 100) / 100)
  }
  return points
}

const ApexChart = () => {
  const [state, setState] = React.useState({
    series: [
      {
        name: 'Bill ratio',
        data: [
          { x: 'Adelie', points: sample(2.12, 0.16, 150) },
          { x: 'Chinstrap', points: sample(2.65, 0.14, 70) },
          {
            x: 'Gentoo',
            points: sample(3.08, 0.1, 60).concat(sample(3.28, 0.09, 60)),
          },
        ],
      },
    ],
    options: {
      chart: {
        type: 'raincloud',
        height: 420,
      },
      colors: ['#FE9C64', '#00A29B', '#2E93fA'],
      title: {
        text: 'Bill ratios of three penguin species',
      },
      subtitle: {
        text: 'Horizontal layout: cloud above the axis line, box and rain below',
      },
      plotOptions: {
        bar: {
          horizontal: true,
          distributed: true,
        },
      },
      legend: {
        show: false,
      },
      xaxis: {
        title: {
          text: 'Bill ratio (length / depth)',
        },
      },
    },
  })

  return (
    <div>
      <div id="chart">
        <ReactApexChart
          options={state.options}
          series={state.series}
          type="raincloud"
          height={420}
        />
      </div>
    </div>
  )
}

export default ApexChart