sentry/static/app/components/charts/miniBarChart.tsx

// Import to ensure echarts components are loaded.
import './components/markPoint';

import React from 'react';
import set from 'lodash/set';

import {getFormattedDate} from 'app/utils/dates';
import theme from 'app/utils/theme';

import BarChart, {BarChartSeries} from './barChart';
import BaseChart from './baseChart';
import {truncationFormatter} from './utils';

type Marker = {
  name: string;
  value: string | number | Date;
  color: string;
  symbolSize?: number;
};

const defaultProps = {
  /**
   * Colors to use on the chart.
   */
  colors: [theme.gray200, theme.purple300, theme.purple300] as string[],
  /**
   * Show max/min values on yAxis
   */
  labelYAxisExtents: false,
  /**
   * Whether not the series should be stacked.
   *
   * Some of our stats endpoints return data where the 'total' series includes
   * breakdown data (issues). For these results `stacked` should be false.
   * Other endpoints return decomposed results that need to be stacked (outcomes).
   */
  stacked: false,
};

type ChartProps = React.ComponentProps<typeof BaseChart>;

type BarChartProps = React.ComponentProps<typeof BarChart>;

type Props = Omit<ChartProps, 'series'> &
  typeof defaultProps & {
    /**
     * A list of series to be rendered as markLine components on the chart
     * This is often used to indicate start/end markers on the xAxis
     */
    markers?: Marker[];
    /**
     * Whether timestamps are should be shown in UTC or local timezone.
     */
    utc?: boolean;
    /**
     * A list of colors to use on hover.
     * By default hover state will shift opacity from 0.6 to 1.0.
     * You can use this prop to also shift colors on hover.
     */
    emphasisColors?: string[];

    /**
     * Delay time for hiding tooltip, in ms.
     */
    hideDelay?: number;

    /**
     * Function to format tooltip values
     */
    tooltipFormatter?: (value: number) => string;

    series?: BarChartProps['series'];
  };

class MiniBarChart extends React.Component<Props> {
  static defaultProps = defaultProps;

  render() {
    const {
      markers,
      emphasisColors,
      colors,
      series: _series,
      labelYAxisExtents,
      stacked,
      series,
      hideDelay,
      tooltipFormatter,
      ...props
    } = this.props;

    const {ref: _ref, ...barChartProps} = props;

    let chartSeries: BarChartSeries[] = [];

    // Ensure bars overlap and that empty values display as we're disabling the axis lines.
    if (series && series.length) {
      chartSeries = series.map((original, i: number) => {
        const updated = {
          ...original,
          cursor: 'normal',
          type: 'bar',
        } as BarChartSeries;

        if (i === 0) {
          updated.barMinHeight = 1;
          if (stacked === false) {
            updated.barGap = '-100%';
          }
        }
        if (stacked) {
          updated.stack = 'stack1';
        }
        set(updated, 'itemStyle.color', colors[i]);
        set(updated, 'itemStyle.opacity', 0.6);
        set(updated, 'itemStyle.emphasis.opacity', 1.0);
        set(updated, 'itemStyle.emphasis.color', emphasisColors?.[i] ?? colors[i]);

        return updated;
      });
    }

    if (markers) {
      const markerTooltip = {
        show: true,
        trigger: 'item',
        formatter: ({data}) => {
          const time = getFormattedDate(data.coord[0], 'MMM D, YYYY LT', {
            local: !this.props.utc,
          });
          const name = truncationFormatter(data.name, props?.xAxis?.truncate);
          return [
            '<div class="tooltip-series">',
            `<div><span class="tooltip-label"><strong>${name}</strong></span></div>`,
            '</div>',
            '<div class="tooltip-date">',
            time,
            '</div>',
            '</div>',
            '<div class="tooltip-arrow"></div>',
          ].join('');
        },
      };

      const markPoint = {
        data: markers.map((marker: Marker) => ({
          name: marker.name,
          coord: [marker.value, 0],
          tooltip: markerTooltip,
          symbol: 'circle',
          symbolSize: marker.symbolSize ?? 8,
          itemStyle: {
            color: marker.color,
            borderColor: '#ffffff',
          },
        })),
      };
      chartSeries[0].markPoint = markPoint;
    }

    const yAxisOptions = labelYAxisExtents
      ? {
          showMinLabel: true,
          showMaxLabel: true,
          interval: Infinity,
        }
      : {
          axisLabel: {
            show: false,
          },
        };

    const chartOptions = {
      tooltip: {
        trigger: 'axis' as const,
        hideDelay,
        valueFormatter: tooltipFormatter
          ? (value: number) => tooltipFormatter(value)
          : undefined,
      },
      yAxis: {
        max(value) {
          // This keeps small datasets from looking 'scary'
          // by having full bars for < 10 values.
          return Math.max(10, value.max);
        },
        splitLine: {
          show: false,
        },
        ...yAxisOptions,
      },
      grid: {
        // Offset to ensure there is room for the marker symbols at the
        // default size.
        top: labelYAxisExtents ? 6 : 0,
        bottom: markers || labelYAxisExtents ? 4 : 0,
        left: markers ? 4 : 0,
        right: markers ? 4 : 0,
      },
      xAxis: {
        axisLine: {
          show: false,
        },
        axisTick: {
          show: false,
          alignWithLabel: true,
        },
        axisLabel: {
          show: false,
        },
        axisPointer: {
          type: 'line' as const,
          label: {
            show: false,
          },
          lineStyle: {
            width: 0,
          },
        },
      },
      options: {
        animation: false,
      },
    };
    return <BarChart series={chartSeries} {...chartOptions} {...barChartProps} />;
  }
}

export default MiniBarChart;