[Fix]: threshold in alerts (#4074)

frontend/src/container/FormAlertRules/ChartPreview/index.tsx

@@ -2,6 +2,7 @@ import { InfoCircleOutlined } from '@ant-design/icons';
 import Spinner from 'components/Spinner';
 import { initialQueriesMap, PANEL_TYPES } from 'constants/queryBuilder';
 import GridPanelSwitch from 'container/GridPanelSwitch';
+import { getFormatNameByOptionId } from 'container/NewWidget/RightContainer/alertFomatCategories';
 import { timePreferenceType } from 'container/NewWidget/RightContainer/timeItems';
 import { Time } from 'container/TopNav/DateTimeSelection/config';
 import { useGetQueryRange } from 'hooks/queryBuilder/useGetQueryRange';
@@ -19,7 +20,7 @@ import { EQueryType } from 'types/common/dashboard';
 import { GlobalReducer } from 'types/reducer/globalTime';
 
 import { ChartContainer, FailedMessageContainer } from './styles';
-import { covertIntoDataFormats } from './utils';
+import { getThresholdLabel } from './utils';
 
 export interface ChartPreviewProps {
 	name: string;
@@ -50,12 +51,6 @@ function ChartPreview({
 		(state) => state.globalTime,
 	);
 
-	const thresholdValue = covertIntoDataFormats({
-		value: threshold,
-		sourceUnit: alertDef?.condition.targetUnit,
-		targetUnit: query?.unit,
-	});
-
 	const canQuery = useMemo((): boolean => {
 		if (!query || query == null) {
 			return false;
@@ -110,6 +105,9 @@ function ChartPreview({
 
 	const isDarkMode = useIsDarkMode();
 
+	const optionName =
+		getFormatNameByOptionId(alertDef?.condition.targetUnit || '') || '';
+
 	const options = useMemo(
 		() =>
 			getUPlotChartOptions({
@@ -124,10 +122,16 @@ function ChartPreview({
 						keyIndex: 0,
 						moveThreshold: (): void => {},
 						selectedGraph: PANEL_TYPES.TIME_SERIES, // no impact
-						thresholdValue,
+						thresholdValue: threshold,
 						thresholdLabel: `${t(
 							'preview_chart_threshold_label',
-						)} (y=${thresholdValue} ${query?.unit || ''})`,
+						)} (y=${getThresholdLabel(
+							optionName,
+							threshold,
+							alertDef?.condition.targetUnit,
+							query?.unit,
+						)})`,
+						thresholdUnit: alertDef?.condition.targetUnit,
 					},
 				],
 			}),
@@ -136,8 +140,10 @@ function ChartPreview({
 			queryResponse?.data?.payload,
 			containerDimensions,
 			isDarkMode,
+			threshold,
 			t,
-			thresholdValue,
+			optionName,
+			alertDef?.condition.targetUnit,
 		],
 	);
 

frontend/src/container/FormAlertRules/ChartPreview/utils.ts

@@ -51,6 +51,21 @@ export function covertIntoDataFormats({
 	return Number.isNaN(result) ? 0 : result;
 }
 
+export const getThresholdLabel = (
+	optionName: string,
+	value: number,
+	unit?: string,
+	yAxisUnit?: string,
+): string => {
+	if (
+		unit === MiscellaneousFormats.PercentUnit ||
+		yAxisUnit === MiscellaneousFormats.PercentUnit
+	) {
+		return `${value * 100}%`;
+	}
+	return `${value} ${optionName}`;
+};
+
 interface IUnit {
 	value: number;
 	sourceUnit?: string;

frontend/src/container/NewWidget/RightContainer/alertFomatCategories.ts

@@ -6,6 +6,8 @@ import {
 	CategoryNames,
 	DataFormats,
 	DataRateFormats,
+	HelperCategory,
+	HelperFormat,
 	MiscellaneousFormats,
 	ThroughputFormats,
 	TimeFormats,
@@ -119,3 +121,10 @@ export const getCategoryByOptionId = (id: string): Category | undefined =>
 
 export const isCategoryName = (name: string): name is CategoryNames =>
 	alertsCategory.some((category) => category.name === name);
+
+const allFormats: HelperFormat[] = alertsCategory.flatMap(
+	(category: HelperCategory) => category.formats,
+);
+
+export const getFormatNameByOptionId = (id: string): string | undefined =>
+	allFormats.find((format) => format.id === id)?.name;

frontend/src/container/NewWidget/RightContainer/types.ts

@@ -362,3 +362,13 @@ export type Category = {
 };
 
 export type DataTypeCategories = Category[];
+
+export interface HelperFormat {
+	name: string;
+	id: string;
+}
+
+export interface HelperCategory {
+	name: string;
+	formats: Format[];
+}

frontend/src/lib/getConvertedValue.ts

@@ -265,10 +265,15 @@ function findUnitObject(
 
 export function convertValue(
 	value: number,
-	currentUnit: string,
-	targetUnit: string,
+	currentUnit?: string,
+	targetUnit?: string,
 ): number | null {
-	if (targetUnit === 'none') {
+	if (
+		targetUnit === 'none' ||
+		!currentUnit ||
+		!targetUnit ||
+		currentUnit === targetUnit
+	) {
 		return value;
 	}
 	const currentUnitObj = findUnitObject(currentUnit);

frontend/src/lib/uPlotLib/getUplotChartOptions.ts

@@ -15,6 +15,7 @@ import onClickPlugin, { OnClickPluginOpts } from './plugins/onClickPlugin';
 import tooltipPlugin from './plugins/tooltipPlugin';
 import getAxes from './utils/getAxes';
 import getSeries from './utils/getSeriesData';
+import { getYAxisScale } from './utils/getYAxisScale';
 
 interface GetUPlotChartOptions {
 	id?: string;
@@ -79,7 +80,11 @@ export const getUPlotChartOptions = ({
 				auto: true, // Automatically adjust scale range
 			},
 			y: {
-				auto: true,
+				...getYAxisScale(
+					thresholds,
+					apiResponse?.data.newResult.data.result,
+					yAxisUnit,
+				),
 			},
 		},
 		plugins: [

frontend/src/lib/uPlotLib/utils/getYAxisScale.ts

@@ -0,0 +1,83 @@
+import { ThresholdProps } from 'container/NewWidget/RightContainer/Threshold/types';
+import { convertValue } from 'lib/getConvertedValue';
+import { QueryDataV3 } from 'types/api/widgets/getQuery';
+
+function findMinMaxValues(data: QueryDataV3[]): [number, number] {
+	let min = 0;
+	let max = 0;
+	data?.forEach((entry) => {
+		entry.series?.forEach((series) => {
+			series.values.forEach((valueObj) => {
+				const value = parseFloat(valueObj.value);
+				if (!value) return;
+				min = Math.min(min, value);
+				max = Math.max(max, value);
+			});
+		});
+	});
+
+	return [min, max];
+}
+
+function findMinMaxThresholdValues(
+	thresholds: ThresholdProps[],
+	yAxisUnit?: string,
+): [number, number] {
+	let minThresholdValue = 0;
+	let maxThresholdValue = 0;
+
+	thresholds.forEach((entry) => {
+		const { thresholdValue, thresholdUnit } = entry;
+		if (thresholdValue === undefined) return;
+		minThresholdValue = Math.min(
+			minThresholdValue,
+			convertValue(thresholdValue, thresholdUnit, yAxisUnit) || 0,
+		);
+		maxThresholdValue = Math.max(
+			maxThresholdValue,
+			convertValue(thresholdValue, thresholdUnit, yAxisUnit) || 0,
+		);
+	});
+
+	return [minThresholdValue, maxThresholdValue];
+}
+
+function getRange(
+	thresholds: ThresholdProps[],
+	series: QueryDataV3[],
+	yAxisUnit?: string,
+): [number, number] {
+	const [minThresholdValue, maxThresholdValue] = findMinMaxThresholdValues(
+		thresholds,
+		yAxisUnit,
+	);
+	const [minSeriesValue, maxSeriesValue] = findMinMaxValues(series);
+
+	const min = Math.min(minThresholdValue, minSeriesValue);
+	const max = Math.max(maxThresholdValue, maxSeriesValue);
+
+	return [min, max];
+}
+
+function areAllSeriesEmpty(series: QueryDataV3[]): boolean {
+	return series.every((entry) => {
+		if (!entry.series) return true;
+		return entry.series.every((series) => series.values.length === 0);
+	});
+}
+
+export const getYAxisScale = (
+	thresholds?: ThresholdProps[],
+	series?: QueryDataV3[],
+	yAxisUnit?: string,
+): {
+	auto: boolean;
+	range?: [number, number];
+} => {
+	if (!thresholds || !series) return { auto: true };
+
+	if (areAllSeriesEmpty(series)) return { auto: true };
+
+	const [min, max] = getRange(thresholds, series, yAxisUnit);
+	return { auto: false, range: [min, max] };
+};