<script type="module">
  // Get raw data
  const rawData = [
    {% for sample in measurement.samples %}
      [{{ sample.commit_num }}, {{ sample.mean.gv_value() }}, {{ sample.start_time }}, '{{sample.commit}}'],
    {% endfor %}
  ];

  const convertToMinute = (time) => {
    return time[0]*60 + time[1] + time[2]/60 + time[3]/3600;
  }

  // Update value format to either minutes or leave as size value
  const updateValue = (value) => {
    // Assuming the array values are duration in the format [hours, minutes, seconds, milliseconds]
    return Array.isArray(value) ? convertToMinute(value) : value
  }

  // Convert raw data to the format: [time, value]
  const data = rawData.map(([commit, value, time]) => {
    return [
      // The Date object takes values in milliseconds rather than seconds. So to use a Unix timestamp we have to multiply it by 1000.
      new Date(time * 1000).getTime(),
      // Assuming the array values are duration in the format [hours, minutes, seconds, milliseconds]
      updateValue(value)
    ]
  });

  // Set chart options
  const option = {
    tooltip: {
      trigger: 'axis',
      enterable: true,
      position: function (point, params, dom, rect, size) {
        return [point[0]-150, '10%'];
      },
      formatter: function (param) {
        const value = param[0].value[1]
        const sample  = rawData.filter(([commit, dataValue]) => updateValue(dataValue) === value)
        // Add commit hash to the tooltip as a link
        const commitLink = `https://git.yoctoproject.org/poky/commit/?id=${sample[0][3]}`
        if ('{{ measurement.value_type.quantity }}' == 'time') {
          const hours = Math.floor(value/60)
          const minutes = Math.floor(value % 60)
          const seconds = Math.floor((value * 60) % 60)
          return `<strong>Duration:</strong> ${hours}:${minutes}:${seconds}, <br/> <strong>Commit number:</strong> <a href="${commitLink}" target="_blank" rel="noreferrer noopener">${sample[0][0]}</a>`
        }
        return `<strong>Size:</strong> ${value.toFixed(2)} MB, <br/> <strong>Commit number:</strong> <a href="${commitLink}" target="_blank" rel="noreferrer noopener">${sample[0][0]}</a>`
      ;}
    },
    xAxis: {
      type: 'time',
    },
    yAxis: {
      name: '{{ measurement.value_type.quantity }}' == 'time' ? 'Duration in minutes' : 'Disk size in MB',
      type: 'value',
      min: function(value) {
        return Math.round(value.min - 0.5);
      },
      max: function(value) {
        return Math.round(value.max + 0.5);
      }
    },
    dataZoom: [
      {
        type: 'slider',
        xAxisIndex: 0,
        filterMode: 'none'
      },
    ],
    series: [
      {
        name: '{{ measurement.value_type.quantity }}',
        type: 'line',
        step: 'start',
        symbol: 'none',
        data: data
      }
    ]
  };

  // Draw chart
  const chart_div = document.getElementById('{{ chart_elem_id }}');
  // Set dark mode
  let measurement_chart
  if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
      measurement_chart= echarts.init(chart_div, 'dark', {
      height: 320
    });
  } else {
      measurement_chart= echarts.init(chart_div, null, {
      height: 320
    });
  }
  // Change chart size with browser resize
  window.addEventListener('resize', function() {
    measurement_chart.resize();
  });
  measurement_chart.setOption(option);
</script>
