n8n/packages/nodes-base/nodes/WooCommerce/WooCommerceTrigger.node.ts
2021-08-01 21:33:21 +02:00

189 lines
4.4 KiB
TypeScript

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',
color: '#96588a',
},
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.updated',
value: 'coupon.updated',
},
{
name: 'coupon.deleted',
value: 'coupon.deleted',
},
{
name: 'customer.created',
value: 'customer.created',
},
{
name: 'customer.updated',
value: 'customer.updated',
},
{
name: 'customer.deleted',
value: 'customer.deleted',
},
{
name: 'order.created',
value: 'order.created',
},
{
name: 'order.updated',
value: 'order.updated',
},
{
name: 'order.deleted',
value: 'order.deleted',
},
{
name: 'product.created',
value: 'product.created',
},
{
name: 'product.updated',
value: 'product.updated',
},
{
name: 'product.deleted',
value: 'product.deleted',
},
],
description: 'Determines which resource events the webhook is triggered for.',
},
],
};
// @ts-ignore
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 = 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;
},
},
};
//@ts-ignore
async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
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),
],
};
}
}