fix(editor): Differentiate $fromAI overrides within lists (#14696)

packages/frontend/editor-ui/src/utils/fromAIOverrideUtils.test.ts

@@ -1,6 +1,7 @@
 import type { INodeUi } from '@/Interface';
 import type { FromAIOverride, OverrideContext } from './fromAIOverrideUtils';
 import {
+	buildUniqueName,
 	buildValueFromOverride,
 	fromAIExtraProps,
 	isFromAIOverrideValue,
@@ -213,3 +214,40 @@ describe('FromAiOverride', () => {
 		);
 	});
 });
+
+describe('buildUniqueName', () => {
+	test.each<[string, string, string]>([
+		['no list segments', 'parameters.someParameter', DISPLAY_NAME],
+		[
+			'list segments in the path',
+			'parameters.someList[0].someParameter',
+			'someList0_' + DISPLAY_NAME,
+		],
+		[
+			'multiple list segments in the path',
+			'parameters.someList[0].nestedList[1].someParameter',
+			'someList0_nestedList1_' + DISPLAY_NAME,
+		],
+		[
+			'paths without parameters',
+			'someList[0].nestedList[1]',
+			'someList0_nestedList1_' + DISPLAY_NAME,
+		],
+		['empty paths', '', DISPLAY_NAME],
+		[
+			'path with multiple lists and segment exceeding 63 characters',
+			'parameters.someLoooooongList[0].nestedListWithAVeryLongNameThatExceedsTheLimit[1].someParameter',
+			`someLoooooongList0_nestedListWithAVeryLongNameThatExceedsTheLimit1_${DISPLAY_NAME}`.slice(
+				-63,
+			),
+		],
+		[
+			'path with multiple long segments and truncation',
+			'parameters.someExtremelyLongListNameThatExceedsTheLimit.anotherLongSegmentName.finalParameter',
+			DISPLAY_NAME,
+		],
+	])('should build a unique name with %s', (_description, path, expected) => {
+		const context = makeContext('value', path);
+		expect(buildUniqueName(context)).toEqual(expected);
+	});
+});

packages/frontend/editor-ui/src/utils/fromAIOverrideUtils.ts

@@ -119,14 +119,38 @@ function getBestQuoteChar(description: string) {
 	return "'";
 }
 
+// Note that this is not *technically* unique, as two lists with the
+// same list name and the same property display name could theoretically
+// exist within one node. However, this is unlikely to happen in practice.
+export function buildUniqueName(props: Pick<OverrideContext, 'parameter' | 'path'>) {
+	const path = props.path.split('.');
+
+	// include any list segments in the path (e.g. .myListName[0].) for uniqueness
+	// but drop brackets to avoid token limits
+	const filteredPaths = path
+		.filter((x) => /\[\d+\]/i.test(x))
+		.map((x) => x.replaceAll(/[\[\]]/gi, ''));
+	let result = [...filteredPaths, props.parameter.displayName].join('_');
+
+	// Langchain requires the name to be <64 characters
+	if (filteredPaths.length > 1) {
+		// Prefer clipping the list names over the display name
+		result = result.slice(-63);
+	} else {
+		result = result.slice(0, 63);
+	}
+
+	return result;
+}
+
 export function buildValueFromOverride(
 	override: FromAIOverride,
-	props: Pick<OverrideContext, 'parameter'>,
+	props: Pick<OverrideContext, 'parameter' | 'path'>,
 	includeMarker: boolean,
 ) {
 	const { extraPropValues, extraProps } = override;
 	const marker = includeMarker ? `${FROM_AI_AUTO_GENERATED_MARKER} ` : '';
-	const key = sanitizeFromAiParameterName(props.parameter.displayName);
+	const key = sanitizeFromAiParameterName(buildUniqueName(props));
 	const description =
 		extraPropValues?.description?.toString() ?? extraProps.description.initialValue;