var options = {
  series: [
    // George Washington
    {
      name: 'George Washington',
      data: [
        {
          x: 'President',
          y: [new Date(1789, 3, 30).getTime(), new Date(1797, 2, 4).getTime()],
        },
      ],
    },
    // John Adams
    {
      name: 'John Adams',
      data: [
        {
          x: 'President',
          y: [new Date(1797, 2, 4).getTime(), new Date(1801, 2, 4).getTime()],
        },
        {
          x: 'Vice President',
          y: [new Date(1789, 3, 21).getTime(), new Date(1797, 2, 4).getTime()],
        },
      ],
    },
    // Thomas Jefferson
    {
      name: 'Thomas Jefferson',
      data: [
        {
          x: 'President',
          y: [new Date(1801, 2, 4).getTime(), new Date(1809, 2, 4).getTime()],
        },
        {
          x: 'Vice President',
          y: [new Date(1797, 2, 4).getTime(), new Date(1801, 2, 4).getTime()],
        },
        {
          x: 'Secretary of State',
          y: [
            new Date(1790, 2, 22).getTime(),
            new Date(1793, 11, 31).getTime(),
          ],
        },
      ],
    },
    // Aaron Burr
    {
      name: 'Aaron Burr',
      data: [
        {
          x: 'Vice President',
          y: [new Date(1801, 2, 4).getTime(), new Date(1805, 2, 4).getTime()],
        },
      ],
    },
    // George Clinton
    {
      name: 'George Clinton',
      data: [
        {
          x: 'Vice President',
          y: [new Date(1805, 2, 4).getTime(), new Date(1812, 3, 20).getTime()],
        },
      ],
    },
    // John Jay
    {
      name: 'John Jay',
      data: [
        {
          x: 'Secretary of State',
          y: [new Date(1789, 8, 25).getTime(), new Date(1790, 2, 22).getTime()],
        },
      ],
    },
    // Edmund Randolph
    {
      name: 'Edmund Randolph',
      data: [
        {
          x: 'Secretary of State',
          y: [new Date(1794, 0, 2).getTime(), new Date(1795, 7, 20).getTime()],
        },
      ],
    },
    // Timothy Pickering
    {
      name: 'Timothy Pickering',
      data: [
        {
          x: 'Secretary of State',
          y: [new Date(1795, 7, 20).getTime(), new Date(1800, 4, 12).getTime()],
        },
      ],
    },
    // Charles Lee
    {
      name: 'Charles Lee',
      data: [
        {
          x: 'Secretary of State',
          y: [new Date(1800, 4, 13).getTime(), new Date(1800, 5, 5).getTime()],
        },
      ],
    },
    // John Marshall
    {
      name: 'John Marshall',
      data: [
        {
          x: 'Secretary of State',
          y: [new Date(1800, 5, 13).getTime(), new Date(1801, 2, 4).getTime()],
        },
      ],
    },
    // Levi Lincoln
    {
      name: 'Levi Lincoln',
      data: [
        {
          x: 'Secretary of State',
          y: [new Date(1801, 2, 5).getTime(), new Date(1801, 4, 1).getTime()],
        },
      ],
    },
    // James Madison
    {
      name: 'James Madison',
      data: [
        {
          x: 'Secretary of State',
          y: [new Date(1801, 4, 2).getTime(), new Date(1809, 2, 3).getTime()],
        },
      ],
    },
  ],
  chart: {
    height: 350,
    type: 'rangeBar',
  },
  plotOptions: {
    bar: {
      horizontal: true,
      barHeight: '50%',
      rangeBarGroupRows: true,
    },
  },
  colors: [
    '#008FFB',
    '#00E396',
    '#FEB019',
    '#FF4560',
    '#775DD0',
    '#3F51B5',
    '#546E7A',
    '#D4526E',
    '#8D5B4C',
    '#F86624',
    '#D7263D',
    '#1B998B',
    '#2E294E',
    '#F46036',
    '#E2C044',
  ],
  fill: {
    type: 'solid',
  },
  xaxis: {
    type: 'datetime',
  },
  legend: {
    position: 'right',
  },
  tooltip: {
    custom: function (opts) {
      const fromYear = new Date(opts.y1).getFullYear()
      const toYear = new Date(opts.y2).getFullYear()

      const w = opts.ctx.w
      let ylabel = ''
      if (
        w.config.series[opts.seriesIndex].data &&
        w.config.series[opts.seriesIndex].data[opts.dataPointIndex]
      ) {
        ylabel = w.config.series[opts.seriesIndex].data[opts.dataPointIndex].x
      }
      let seriesName = w.config.series[opts.seriesIndex].name
        ? w.config.series[opts.seriesIndex].name
        : ''
      const color = w.globals.colors[opts.seriesIndex]

      return (
        '<div class="apexcharts-tooltip-rangebar">' +
        '<div> <span class="series-name" style="color: ' +
        color +
        '">' +
        (seriesName ? seriesName : '') +
        '</span></div>' +
        '<div> <span class="category">' +
        ylabel +
        ' </span> <span class="value start-value">' +
        fromYear +
        '</span> <span class="separator">-</span> <span class="value end-value">' +
        toYear +
        '</span></div>' +
        '</div>'
      )
    },
  },
}

var chart = new ApexCharts(document.querySelector('#chart'), options)
chart.render()