feat(Zammad Node): Make it possible for Zammad to lookup and create users during ticket creation

packages/nodes-base/nodes/Zammad/Zammad.node.ts

@@ -662,13 +662,6 @@ export class Zammad implements INodeType {
 
 						// https://docs.zammad.org/en/latest/api/ticket/index.html#create
 
-						const body = {
-							article: {},
-							title: this.getNodeParameter('title', i) as string,
-							group: this.getNodeParameter('group', i) as string,
-							customer: this.getNodeParameter('customer', i) as string,
-						};
-
 						const article = this.getNodeParameter('article', i) as ZammadTypes.Article;
 
 						if (!Object.keys(article).length) {
@@ -679,11 +672,30 @@ export class Zammad implements INodeType {
 							articleDetails: { visibility, ...rest },
 						} = article;
 
-						body.article = {
-							...rest,
-							internal: visibility === 'internal',
+						const base = {
+							article: {
+								...rest,
+								internal: visibility === 'internal',
+							},
+							title: this.getNodeParameter('title', i) as string,
+							group: this.getNodeParameter('group', i) as string,
 						};
 
+						const createCustomerIfNotExists = this.getNodeParameter(
+							'createCustomerIfNotExists',
+							i,
+						) as boolean;
+
+						const body = createCustomerIfNotExists
+							? {
+									...base,
+									customer_id: 'guess:' + (this.getNodeParameter('customer', i) as string),
+								}
+							: {
+									...base,
+									customer: this.getNodeParameter('customer', i) as string,
+								};
+
 						responseData = await zammadApiRequest.call(this, 'POST', '/tickets', body);
 
 						const { id } = responseData;

packages/nodes-base/nodes/Zammad/descriptions/TicketDescription.ts

@@ -98,6 +98,20 @@ export const ticketDescription: INodeProperties[] = [
 			},
 		},
 	},
+	{
+		displayName: 'Create Customer if They Do Not Exist',
+		name: 'createCustomerIfNotExists',
+		description:
+			'Whether you want Zammad to find out the user ID or, if there is no user for the email address, create the user for you during ticket creation',
+		type: 'boolean',
+		default: false,
+		displayOptions: {
+			show: {
+				resource: ['ticket'],
+				operation: ['create'],
+			},
+		},
+	},
 	{
 		displayName: 'Ticket ID',
 		name: 'id',