From e557ac64640770364d2ced6a01731eca41d1c84f Mon Sep 17 00:00:00 2001
From: Uladzislau Lasitsa <Uladzislau_Lasitsa@epam.com>
Date: Mon, 21 Mar 2022 16:42:03 +0300
Subject: [PATCH] Add interval arg

---
 .../expression_xy/common/expression_functions/xy_vis.ts     | 6 ++++++
 .../expression_xy/common/types/expression_functions.ts      | 1 +
 .../expression_xy/public/helpers/interval.ts                | 5 ++++-
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/plugins/chart_expressions/expression_xy/common/expression_functions/xy_vis.ts b/src/plugins/chart_expressions/expression_xy/common/expression_functions/xy_vis.ts
index 8049d117b3389..8d4dbb0dd1b52 100644
--- a/src/plugins/chart_expressions/expression_xy/common/expression_functions/xy_vis.ts
+++ b/src/plugins/chart_expressions/expression_xy/common/expression_functions/xy_vis.ts
@@ -166,6 +166,12 @@ export const xyVisFunction: ExpressionFunctionDefinition<
         defaultMessage: 'Show values in legend',
       }),
     },
+    interval: {
+      types: ['number'],
+      help: i18n.translate('expressionXY.xyVis.interval.help', {
+        defaultMessage: 'Specifies the interval for x-axis in milliseconds',
+      }),
+    },
     ariaLabel: {
       types: ['string'],
       help: i18n.translate('expressionXY.xyVis.ariaLabel.help', {
diff --git a/src/plugins/chart_expressions/expression_xy/common/types/expression_functions.ts b/src/plugins/chart_expressions/expression_xy/common/types/expression_functions.ts
index 2fee0b418d642..fd8a811825af8 100644
--- a/src/plugins/chart_expressions/expression_xy/common/types/expression_functions.ts
+++ b/src/plugins/chart_expressions/expression_xy/common/types/expression_functions.ts
@@ -174,6 +174,7 @@ export interface XYArgs {
   hideEndzones?: boolean;
   valuesInLegend?: boolean;
   ariaLabel?: string;
+  interval?: number;
 }
 
 export interface XYReferenceLineLayerConfig {
diff --git a/src/plugins/chart_expressions/expression_xy/public/helpers/interval.ts b/src/plugins/chart_expressions/expression_xy/public/helpers/interval.ts
index 7e15b49c311d4..933ffdd8532ec 100644
--- a/src/plugins/chart_expressions/expression_xy/public/helpers/interval.ts
+++ b/src/plugins/chart_expressions/expression_xy/public/helpers/interval.ts
@@ -11,7 +11,7 @@ import { XYChartProps } from '../../common';
 import { getFilteredLayers } from './layers';
 import { isDataLayer } from './visualization';
 
-export function calculateMinInterval({ args: { layers }, data }: XYChartProps) {
+export function calculateMinInterval({ args: { layers, interval }, data }: XYChartProps) {
   const filteredLayers = getFilteredLayers(layers, data);
   if (filteredLayers.length === 0) return;
   const isTimeViz = filteredLayers.every((l) => isDataLayer(l) && l.xScaleType === 'time');
@@ -20,6 +20,9 @@ export function calculateMinInterval({ args: { layers }, data }: XYChartProps) {
   );
 
   if (!xColumn) return;
+  if (interval) {
+    return interval;
+  }
   if (!isTimeViz) {
     const histogramInterval = search.aggs.getNumberHistogramIntervalByDatatableColumn(xColumn);
     if (typeof histogramInterval === 'number') {