import { IHookFunctions, IWebhookFunctions, } from 'n8n-core'; import { IDataObject, INodeType, INodeTypeDescription, IWebhookResponseData, } from 'n8n-workflow'; import { getAutomaticSecret, woocommerceApiRequest, } from './GenericFunctions'; import { createHmac, } from 'crypto'; 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: ['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', }, ], }; // @ts-ignore webhookMethods = { default: { async checkExists(this: IHookFunctions): Promise { 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 { 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 { 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; }, }, }; //@ts-ignore async webhook(this: IWebhookFunctions): Promise { const req = this.getRequestObject(); const headerData = this.getHeaderData(); const webhookData = this.getWorkflowStaticData('node'); //@ts-ignore if (headerData['x-wc-webhook-id'] === undefined) { return {}; } //@ts-ignore const computedSignature = createHmac('sha256',webhookData.secret as string).update(req.rawBody).digest('base64'); //@ts-ignore if (headerData['x-wc-webhook-signature'] !== computedSignature) { // Signature is not valid so ignore call return {}; } return { workflowData: [ this.helpers.returnJsonArray(req.body), ], }; } }