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

const ApexChart = () => {
  const [state, setState] = React.useState({
    series: [
      {
        data: [
          {
            x: 'Analysis',
            y: [
              new Date('2019-02-27').getTime(),
              new Date('2019-03-04').getTime(),
            ],
            fillColor: '#008FFB',
          },
          {
            x: 'Design',
            y: [
              new Date('2019-03-04').getTime(),
              new Date('2019-03-08').getTime(),
            ],
            fillColor: '#00E396',
          },
          {
            x: 'Coding',
            y: [
              new Date('2019-03-07').getTime(),
              new Date('2019-03-10').getTime(),
            ],
            fillColor: '#775DD0',
          },
          {
            x: 'Testing',
            y: [
              new Date('2019-03-08').getTime(),
              new Date('2019-03-12').getTime(),
            ],
            fillColor: '#FEB019',
          },
          {
            x: 'Deployment',
            y: [
              new Date('2019-03-12').getTime(),
              new Date('2019-03-17').getTime(),
            ],
            fillColor: '#FF4560',
          },
        ],
      },
    ],
    options: {
      chart: {
        height: 350,
        type: 'rangeBar',
      },
      title: {
        text: 'Project Phases (per-bar colors)',
      },
      plotOptions: {
        bar: {
          horizontal: true,
          distributed: true,
          dataLabels: {
            hideOverflowingLabels: false,
          },
        },
      },
      dataLabels: {
        enabled: true,
        formatter: function (val, opts) {
          var label = opts.w.globals.labels[opts.dataPointIndex]
          var diff = Math.round((val[1] - val[0]) / (1000 * 60 * 60 * 24))
          return label + ': ' + diff + (diff > 1 ? ' days' : ' day')
        },
        style: {
          colors: ['#f3f4f5', '#fff'],
        },
      },
      xaxis: {
        type: 'datetime',
      },
      yaxis: {
        show: false,
      },
      grid: {
        row: {
          colors: ['#f3f4f5', '#fff'],
          opacity: 1,
        },
      },
    },
  })

  return (
    <div>
      <div id="chart">
        <ReactApexChart
          options={state.options}
          series={state.series}
          type="rangeBar"
          height={350}
        />
      </div>
    </div>
  )
}

export default ApexChart