refactor(meter-explorer): convert bar to stacked bar

frontend/src/container/MeterExplorer/Explorer/TimeSeries.tsx

@@ -167,6 +167,7 @@ function TimeSeries({
 								dataSource={DataSource.METRICS}
 								yAxisUnit={yAxisUnit}
 								panelType={PANEL_TYPES.BAR}
+								stackBarChart
 							/>
 						</div>
 					))}

frontend/src/container/TimeSeriesView/TimeSeriesView.tsx

@@ -30,6 +30,7 @@ import useUrlQuery from 'hooks/useUrlQuery';
 import GetMinMax from 'lib/getMinMax';
 import getTimeString from 'lib/getTimeString';
 import history from 'lib/history';
+import { stackSeries } from 'container/DashboardContainer/visualization/charts/utils/stackSeriesUtils';
 import { getUPlotChartOptions } from 'lib/uPlotLib/getUplotChartOptions';
 import { getUPlotChartData } from 'lib/uPlotLib/utils/getUplotChartData';
 import { isEmpty } from 'lodash-es';
@@ -57,6 +58,7 @@ function TimeSeriesView({
 	dataSource,
 	setWarning,
 	panelType = PANEL_TYPES.TIME_SERIES,
+	stackBarChart = false,
 }: TimeSeriesViewProps): JSX.Element {
 	const graphRef = useRef<HTMLDivElement>(null);
 
@@ -65,11 +67,29 @@ function TimeSeriesView({
 	const location = useLocation();
 	const { currentQuery } = useQueryBuilder();
 
-	const chartData = useMemo(
+	const rawChartData = useMemo(
 		() => getUPlotChartData(data?.payload),
 		[data?.payload],
 	);
 
+	const { chartData, stackedBands } = useMemo(() => {
+		// AlignedData format: [timeAxis, series1, series2, ...]. Need 2+ data series to stack.
+		const minSeriesForStacking = 3;
+		if (
+			!stackBarChart ||
+			!rawChartData ||
+			rawChartData.length < minSeriesForStacking
+		) {
+			return { chartData: rawChartData, stackedBands: null };
+		}
+		const noSeriesHidden = (): boolean => false;
+		const { data: stacked, bands } = stackSeries(
+			rawChartData as uPlot.AlignedData,
+			noSeriesHidden,
+		);
+		return { chartData: stacked, stackedBands: bands };
+	}, [rawChartData, stackBarChart]);
+
 	useEffect(() => {
 		if (data?.payload) {
 			setWarning?.(data?.warning);
@@ -189,7 +209,7 @@ function TimeSeriesView({
 
 	const { timezone } = useTimezone();
 
-	const chartOptions = getUPlotChartOptions({
+	const baseChartOptions = getUPlotChartOptions({
 		id: 'time-series-explorer',
 		onDragSelect,
 		yAxisUnit: yAxisUnit || '',
@@ -220,8 +240,17 @@ function TimeSeriesView({
 		}) => {
 			legendScrollPositionRef.current = position;
 		},
+		stackBarChart,
 	});
 
+	const chartOptions = useMemo(
+		() =>
+			stackedBands
+				? { ...baseChartOptions, bands: stackedBands }
+				: baseChartOptions,
+		[baseChartOptions, stackedBands],
+	);
+
 	return (
 		<div className="time-series-view">
 			{isError && error && <ErrorInPlace error={error as APIError} />}
@@ -282,6 +311,7 @@ interface TimeSeriesViewProps {
 	dataSource: DataSource;
 	setWarning?: Dispatch<SetStateAction<Warning | undefined>>;
 	panelType?: PANEL_TYPES;
+	stackBarChart?: boolean;
 }
 
 TimeSeriesView.defaultProps = {
@@ -290,6 +320,7 @@ TimeSeriesView.defaultProps = {
 	error: undefined,
 	setWarning: undefined,
 	panelType: PANEL_TYPES.TIME_SERIES,
+	stackBarChart: false,
 };
 
 export default TimeSeriesView;