feat(AI Transform Node): New node (#9990)

Co-authored-by: Giulio Andreini <[email protected]>
Co-authored-by: Shireen Missi <[email protected]>

packages/@n8n/nodes-langchain/nodes/trigger/ManualChatTrigger/ManualChatTrigger.node.ts

@@ -50,7 +50,9 @@ export class ManualChatTrigger implements INodeType {
 				name: 'openChat',
 				type: 'button',
 				typeOptions: {
-					action: 'openChat',
+					buttonConfig: {
+						action: 'openChat',
+					},
 				},
 				default: '',
 			},

packages/cli/src/controllers/dynamicNodeParameters.controller.ts

@@ -1,4 +1,4 @@
-import type { INodePropertyOptions } from 'n8n-workflow';
+import type { INodePropertyOptions, NodeParameterValueType } from 'n8n-workflow';
 
 import { Post, RestController } from '@/decorators';
 import { getBase } from '@/WorkflowExecuteAdditionalData';
@@ -92,4 +92,28 @@ export class DynamicNodeParametersController {
 			credentials,
 		);
 	}
+
+	@Post('/action-result')
+	async getActionResult(
+		req: DynamicNodeParametersRequest.ActionResult,
+	): Promise<NodeParameterValueType> {
+		const { currentNodeParameters, nodeTypeAndVersion, path, credentials, handler, payload } =
+			req.body;
+
+		const additionalData = await getBase(req.user.id, currentNodeParameters);
+
+		if (handler) {
+			return await this.service.getActionResult(
+				handler,
+				path,
+				additionalData,
+				nodeTypeAndVersion,
+				currentNodeParameters,
+				payload,
+				credentials,
+			);
+		}
+
+		return;
+	}
 }

packages/cli/src/requests.ts

@@ -418,6 +418,12 @@ export declare namespace DynamicNodeParametersRequest {
 	type ResourceMapperFields = BaseRequest<{
 		methodName: string;
 	}>;
+
+	/** POST /dynamic-node-parameters/action-result */
+	type ActionResult = BaseRequest<{
+		handler: string;
+		payload: IDataObject | string | undefined;
+	}>;
 }
 
 // ----------------------------------

packages/cli/src/services/dynamicNodeParameters.service.ts

@@ -15,6 +15,8 @@ import type {
 	INodeCredentials,
 	INodeParameters,
 	INodeTypeNameVersion,
+	NodeParameterValueType,
+	IDataObject,
 } from 'n8n-workflow';
 import { Workflow, RoutingNode, ApplicationError } from 'n8n-workflow';
 import { NodeExecuteFunctions } from 'n8n-core';
@@ -156,6 +158,24 @@ export class DynamicNodeParametersService {
 		return method.call(thisArgs);
 	}
 
+	/** Returns the result of the action handler */
+	async getActionResult(
+		handler: string,
+		path: string,
+		additionalData: IWorkflowExecuteAdditionalData,
+		nodeTypeAndVersion: INodeTypeNameVersion,
+		currentNodeParameters: INodeParameters,
+		payload: IDataObject | string | undefined,
+		credentials?: INodeCredentials,
+	): Promise<NodeParameterValueType> {
+		const nodeType = this.getNodeType(nodeTypeAndVersion);
+		const method = this.getMethod('actionHandler', handler, nodeType);
+		const workflow = this.getWorkflow(nodeTypeAndVersion, currentNodeParameters, credentials);
+		const thisArgs = this.getThisArg(path, additionalData, workflow);
+		// eslint-disable-next-line @typescript-eslint/no-unsafe-return
+		return method.call(thisArgs, payload);
+	}
+
 	private getMethod(
 		type: 'resourceMapping',
 		methodName: string,
@@ -175,9 +195,14 @@ export class DynamicNodeParametersService {
 		methodName: string,
 		nodeType: INodeType,
 	): (this: ILoadOptionsFunctions) => Promise<INodePropertyOptions[]>;
+	private getMethod(
+		type: 'actionHandler',
+		methodName: string,
+		nodeType: INodeType,
+	): (this: ILoadOptionsFunctions, payload?: string) => Promise<NodeParameterValueType>;
 
 	private getMethod(
-		type: 'resourceMapping' | 'listSearch' | 'loadOptions',
+		type: 'resourceMapping' | 'listSearch' | 'loadOptions' | 'actionHandler',
 		methodName: string,
 		nodeType: INodeType,
 	) {

packages/editor-ui/src/Interface.ts

@@ -1564,6 +1564,11 @@ export declare namespace DynamicNodeParameters {
 	interface ResourceMapperFieldsRequest extends BaseRequest {
 		methodName: string;
 	}
+
+	interface ActionResultRequest extends BaseRequest {
+		handler: string;
+		payload: IDataObject | string | undefined;
+	}
 }
 
 export interface EnvironmentVariable {

packages/editor-ui/src/api/nodeTypes.ts

@@ -5,6 +5,7 @@ import type {
 	INodePropertyOptions,
 	INodeTypeDescription,
 	INodeTypeNameVersion,
+	NodeParameterValueType,
 	ResourceMapperFields,
 } from 'n8n-workflow';
 import axios from 'axios';
@@ -57,3 +58,15 @@ export async function getResourceMapperFields(
 		sendData,
 	);
 }
+
+export async function getNodeParameterActionResult(
+	context: IRestApiContext,
+	sendData: DynamicNodeParameters.ActionResultRequest,
+): Promise<NodeParameterValueType> {
+	return await makeRestApiRequest(
+		context,
+		'POST',
+		'/dynamic-node-parameters/action-result',
+		sendData,
+	);
+}