✨ Add Workable Trigger Node (#2522)

* ⚡ Workable Trigger

* ⚡ Improvements

* ⚡ Small improvement

* ⚡ Minor improvements

Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>

packages/nodes-base/nodes/Workable/WorkableTrigger.node.ts

@@ -0,0 +1,201 @@
+import {
+	IHookFunctions,
+	IWebhookFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+	ILoadOptionsFunctions,
+	INodePropertyOptions,
+	INodeType,
+	INodeTypeDescription,
+	IWebhookResponseData,
+} from 'n8n-workflow';
+
+import {
+	workableApiRequest,
+} from './GenericFunctions';
+
+import {
+	snakeCase,
+} from 'change-case';
+
+export class WorkableTrigger implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Workable Trigger',
+		name: 'workableTrigger',
+		icon: 'file:workable.png',
+		group: ['trigger'],
+		version: 1,
+		subtitle: '={{$parameter["triggerOn"]}}',
+		description: 'Starts the workflow when Workable events occur',
+		defaults: {
+			name: 'Workable Trigger',
+			color: '#29b6f6',
+		},
+		inputs: [],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'workableApi',
+				required: true,
+			},
+		],
+		webhooks: [
+			{
+				name: 'default',
+				httpMethod: 'POST',
+				responseMode: 'onReceived',
+				path: 'webhook',
+			},
+		],
+		properties: [
+			{
+				displayName: 'Trigger On',
+				name: 'triggerOn',
+				type: 'options',
+				options: [
+					{
+						name: 'Candidate Created',
+						value: 'candidateCreated',
+					},
+					{
+						name: 'Candidate Moved',
+						value: 'candidateMoved',
+					},
+				],
+				default: '',
+				required: true,
+			},
+			{
+				displayName: 'Filters',
+				name: 'filters',
+				type: 'collection',
+				placeholder: 'Add Filter',
+				default: {},
+				options: [
+					{
+						displayName: 'Job',
+						name: 'job',
+						type: 'options',
+						typeOptions: {
+							loadOptionsMethod: 'getJobs',
+						},
+						default: '',
+						description: `Get notifications only for one job`,
+					},
+					{
+						displayName: 'Stage',
+						name: 'stage',
+						type: 'options',
+						typeOptions: {
+							loadOptionsMethod: 'getStages',
+						},
+						default: '',
+						description: `Get notifications for specific stages. e.g. 'hired'`,
+					},
+				],
+			},
+		],
+	};
+
+	methods = {
+		loadOptions: {
+			async getJobs(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
+				const returnData: INodePropertyOptions[] = [];
+				const { jobs } = await workableApiRequest.call(this, 'GET', '/jobs');
+				for (const job of jobs) {
+					returnData.push({
+						name: job.full_title,
+						value: job.shortcode,
+					});
+				}
+				return returnData;
+			},
+			async getStages(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
+				const returnData: INodePropertyOptions[] = [];
+				const { stages } = await workableApiRequest.call(this, 'GET', '/stages');
+				for (const stage of stages) {
+					returnData.push({
+						name: stage.name,
+						value: stage.slug,
+					});
+				}
+				return returnData;
+			},
+		},
+	};
+
+	// @ts-ignore (because of request)
+	webhookMethods = {
+		default: {
+			async checkExists(this: IHookFunctions): Promise<boolean> {
+				const webhookUrl = this.getNodeWebhookUrl('default');
+				const webhookData = this.getWorkflowStaticData('node');
+				// Check all the webhooks which exist already if it is identical to the
+				// one that is supposed to get created.
+				const { subscriptions } = await workableApiRequest.call(this, 'GET', `/subscriptions`);
+				for (const subscription of subscriptions) {
+					if (subscription.target === webhookUrl) {
+						webhookData.webhookId = subscription.id as string;
+						return true;
+					}
+				}
+				return false;
+			},
+			async create(this: IHookFunctions): Promise<boolean> {
+				const credentials = await this.getCredentials('workableApi') as { accessToken: string, subdomain: string };
+				const webhookData = this.getWorkflowStaticData('node');
+				const webhookUrl = this.getNodeWebhookUrl('default');
+				const triggerOn = this.getNodeParameter('triggerOn') as string;
+				const { stage, job } = this.getNodeParameter('filters') as IDataObject;
+				const endpoint = '/subscriptions';
+
+				const body: IDataObject = {
+					event: snakeCase(triggerOn).toLowerCase(),
+					args: {
+						account_id: credentials.subdomain,
+						...(job) && { job_shortcode: job },
+						...(stage) && { stage_slug: stage },
+					},
+					target: webhookUrl,
+				};
+
+				const responseData = await workableApiRequest.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 workableApiRequest.call(this, 'DELETE', endpoint);
+					} catch (error) {
+						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 bodyData = this.getBodyData();
+		return {
+			workflowData: [
+				this.helpers.returnJsonArray(bodyData),
+			],
+		};
+	}
+}