first commit

packages/nodes-base/nodes/WooCommerce/WooCommerceTrigger.node.ts

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+import { createHmac } from 'crypto';
+import type {
+	IHookFunctions,
+	IWebhookFunctions,
+	IDataObject,
+	INodeType,
+	INodeTypeDescription,
+	IWebhookResponseData,
+} from 'n8n-workflow';
+import { NodeConnectionTypes } from 'n8n-workflow';
+
+import { getAutomaticSecret, woocommerceApiRequest } from './GenericFunctions';
+
+export class WooCommerceTrigger implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'WooCommerce Trigger',
+		name: 'wooCommerceTrigger',
+		icon: 'file:wooCommerce.svg',
+		group: ['trigger'],
+		version: 1,
+		description: 'Handle WooCommerce events via webhooks',
+		defaults: {
+			name: 'WooCommerce Trigger',
+		},
+		inputs: [],
+		outputs: [NodeConnectionTypes.Main],
+		credentials: [
+			{
+				name: 'wooCommerceApi',
+				required: true,
+			},
+		],
+		webhooks: [
+			{
+				name: 'default',
+				httpMethod: 'POST',
+				responseMode: 'onReceived',
+				path: 'webhook',
+			},
+		],
+		properties: [
+			{
+				displayName: 'Event',
+				name: 'event',
+				type: 'options',
+				required: true,
+				default: '',
+				options: [
+					{
+						name: 'coupon.created',
+						value: 'coupon.created',
+					},
+					{
+						name: 'coupon.deleted',
+						value: 'coupon.deleted',
+					},
+					{
+						name: 'coupon.updated',
+						value: 'coupon.updated',
+					},
+					{
+						name: 'customer.created',
+						value: 'customer.created',
+					},
+					{
+						name: 'customer.deleted',
+						value: 'customer.deleted',
+					},
+					{
+						name: 'customer.updated',
+						value: 'customer.updated',
+					},
+					{
+						name: 'order.created',
+						value: 'order.created',
+					},
+					{
+						name: 'order.deleted',
+						value: 'order.deleted',
+					},
+					{
+						name: 'order.updated',
+						value: 'order.updated',
+					},
+					{
+						name: 'product.created',
+						value: 'product.created',
+					},
+					{
+						name: 'product.deleted',
+						value: 'product.deleted',
+					},
+					{
+						name: 'product.updated',
+						value: 'product.updated',
+					},
+				],
+				description: 'Determines which resource events the webhook is triggered for',
+			},
+		],
+	};
+
+	webhookMethods = {
+		default: {
+			async checkExists(this: IHookFunctions): Promise<boolean> {
+				const webhookUrl = this.getNodeWebhookUrl('default');
+				const webhookData = this.getWorkflowStaticData('node');
+				const currentEvent = this.getNodeParameter('event') as string;
+				const endpoint = '/webhooks';
+
+				const webhooks = await woocommerceApiRequest.call(
+					this,
+					'GET',
+					endpoint,
+					{},
+					{ status: 'active', per_page: 100 },
+				);
+
+				for (const webhook of webhooks) {
+					if (
+						webhook.status === 'active' &&
+						webhook.delivery_url === webhookUrl &&
+						webhook.topic === currentEvent
+					) {
+						webhookData.webhookId = webhook.id;
+						return true;
+					}
+				}
+				return false;
+			},
+			async create(this: IHookFunctions): Promise<boolean> {
+				const credentials = await this.getCredentials('wooCommerceApi');
+				const webhookUrl = this.getNodeWebhookUrl('default');
+				const webhookData = this.getWorkflowStaticData('node');
+				const event = this.getNodeParameter('event') as string;
+				const secret = getAutomaticSecret(credentials);
+				const endpoint = '/webhooks';
+				const body: IDataObject = {
+					delivery_url: webhookUrl,
+					topic: event,
+					secret,
+				};
+				const { id } = await woocommerceApiRequest.call(this, 'POST', endpoint, body);
+				webhookData.webhookId = id;
+				webhookData.secret = secret;
+				return true;
+			},
+			async delete(this: IHookFunctions): Promise<boolean> {
+				const webhookData = this.getWorkflowStaticData('node');
+				const endpoint = `/webhooks/${webhookData.webhookId}`;
+				try {
+					await woocommerceApiRequest.call(this, 'DELETE', endpoint, {}, { force: true });
+				} catch (error) {
+					return false;
+				}
+				delete webhookData.webhookId;
+				delete webhookData.secret;
+				return true;
+			},
+		},
+	};
+
+	async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
+		const req = this.getRequestObject();
+		const headerData = this.getHeaderData();
+		const webhookData = this.getWorkflowStaticData('node');
+		if (headerData['x-wc-webhook-id'] === undefined) {
+			return {};
+		}
+
+		const computedSignature = createHmac('sha256', webhookData.secret as string)
+			.update(req.rawBody)
+			.digest('base64');
+		if (headerData['x-wc-webhook-signature'] !== computedSignature) {
+			// Signature is not valid so ignore call
+			return {};
+		}
+		return {
+			workflowData: [this.helpers.returnJsonArray(req.body as IDataObject)],
+		};
+	}
+}