✨ Add Pushcut Node & Trigger (#1075)

* ✨ Pushcut Node & Trigger

* ⚡ Small improvements

Co-authored-by: Jan <janober@users.noreply.github.com>

packages/nodes-base/nodes/Pushcut/PushcutTrigger.node.ts

@@ -0,0 +1,130 @@
+import {
+	IHookFunctions,
+	IWebhookFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+	INodeType,
+	INodeTypeDescription,
+	IWebhookResponseData,
+} from 'n8n-workflow';
+
+import {
+	pushcutApiRequest,
+} from './GenericFunctions';
+
+export class PushcutTrigger implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Pushcut Trigger',
+		name: 'pushcutTrigger',
+		icon: 'file:pushcut.png',
+		group: ['trigger'],
+		version: 1,
+		description: 'Starts the workflow when a Github events occurs.',
+		defaults: {
+			name: 'Pushcut Trigger',
+			color: '#1f2957',
+		},
+		inputs: [],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'pushcutApi',
+				required: true,
+			},
+		],
+		webhooks: [
+			{
+				name: 'default',
+				httpMethod: 'POST',
+				responseMode: 'onReceived',
+				path: 'webhook',
+			},
+		],
+		properties: [
+			{
+				displayName: 'Action Name',
+				name: 'actionName',
+				type: 'string',
+				description: 'Choose any name you would like. It will show up as a server action in the app',
+				default: '',
+			},
+		],
+	};
+
+	// @ts-ignore (because of request)
+	webhookMethods = {
+		default: {
+			async checkExists(this: IHookFunctions): Promise<boolean> {
+				const webhookUrl = this.getNodeWebhookUrl('default');
+				const webhookData = this.getWorkflowStaticData('node');
+				const actionName = this.getNodeParameter('actionName');
+				// Check all the webhooks which exist already if it is identical to the
+				// one that is supposed to get created.
+				const endpoint = '/subscriptions';
+				const webhooks = await pushcutApiRequest.call(this, 'GET', endpoint, {});
+
+				for (const webhook of webhooks) {
+					if (webhook.url === webhookUrl &&
+						webhook.actionName === actionName) {
+						webhookData.webhookId = webhook.id;
+						return true;
+					}
+				}
+
+				return false;
+			},
+			async create(this: IHookFunctions): Promise<boolean> {
+				const webhookData = this.getWorkflowStaticData('node');
+				const webhookUrl = this.getNodeWebhookUrl('default');
+				const actionName = this.getNodeParameter('actionName');
+
+				const endpoint = '/subscriptions';
+
+				const body = {
+					actionName,
+					url: webhookUrl
+				};
+
+				const responseData = await pushcutApiRequest.call(this, 'POST', endpoint, body);
+
+				if (responseData.id === undefined) {
+					// Required data is missing so was not successful
+					return false;
+				}
+
+				webhookData.webhookId = responseData.id as string;
+				return true;
+			},
+			async delete(this: IHookFunctions): Promise<boolean> {
+				const webhookData = this.getWorkflowStaticData('node');
+				if (webhookData.webhookId !== undefined) {
+
+					const endpoint = `/subscriptions/${webhookData.webhookId}`;
+
+					try {
+						await pushcutApiRequest.call(this, 'DELETE', endpoint);
+					} catch (e) {
+						return false;
+					}
+
+					// Remove from the static workflow data so that it is clear
+					// that no webhooks are registred anymore
+					delete webhookData.webhookId;
+				}
+				return true;
+			},
+		},
+	};
+
+	async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
+		const body = this.getBodyData() as IDataObject;
+
+		return {
+			workflowData: [
+				this.helpers.returnJsonArray(body)
+			],
+		};
+	}
+}