n8n/packages/nodes-base/nodes/Postmark/PostmarkTrigger.node.ts
2020-06-26 13:32:48 +02:00

239 lines
5.5 KiB
TypeScript

import {
IHookFunctions,
IWebhookFunctions,
} from 'n8n-core';
import {
INodeTypeDescription,
INodeType,
IWebhookResponseData,
} from 'n8n-workflow';
import {
convertTriggerObjectToStringArray,
eventExists,
postmarkApiRequest
} from './GenericFunctions';
export class PostmarkTrigger implements INodeType {
description: INodeTypeDescription = {
displayName: 'Postmark Trigger',
name: 'postmarkTrigger',
icon: 'file:postmark.png',
group: ['trigger'],
version: 1,
description: 'Starts the workflow when Postmark events occur.',
defaults: {
name: 'Postmark Trigger',
color: '#fedd00',
},
inputs: [],
outputs: ['main'],
credentials: [
{
name: 'postmarkApi',
required: true,
},
],
webhooks: [
{
name: 'default',
httpMethod: 'POST',
responseMode: 'onReceived',
path: 'webhook',
},
],
properties: [
{
displayName: 'Events',
name: 'events',
type: 'multiOptions',
options: [
{
name: 'Open',
value: 'open',
description: 'Trigger webhook on open.'
},
{
name: 'First Open',
value: 'firstOpen',
description: 'Trigger on first open only.'
},
{
name: 'Click',
value: 'click',
},
{
name: 'Delivery',
value: 'delivery',
},
{
name: 'Bounce',
value: 'bounce',
},
{
name: 'Bounce Content',
value: 'bounceContent',
description: 'Webhook will send full bounce content.'
},
{
name: 'Spam Complaint',
value: 'spamComplaint',
},
{
name: 'Spam Complaint Content',
value: 'spamComplaintContent',
description: 'Webhook will send full bounce content.'
},
{
name: 'Subscription Change',
value: 'subscriptionChange',
},
],
default: [],
required: true,
description: 'Webhook events that will be enabled for that endpoint.',
},
],
};
// @ts-ignore (because of request)
webhookMethods = {
default: {
async checkExists(this: IHookFunctions): Promise<boolean> {
const webhookData = this.getWorkflowStaticData('node');
const webhookUrl = this.getNodeWebhookUrl('default');
const events = this.getNodeParameter('events') as string[];
// Get all webhooks
const endpoint = `/webhooks`;
const responseData = await postmarkApiRequest.call(this, 'GET', endpoint, {});
// No webhooks exist
if (responseData.Webhooks.length === 0) {
return false;
}
// If webhooks exist, check if any match current settings
for (const webhook of responseData.Webhooks) {
if (webhook.Url === webhookUrl && eventExists(events, convertTriggerObjectToStringArray(webhook))) {
webhookData.webhookId = webhook.ID;
// webhook identical to current settings. re-assign webhook id to found webhook.
return true;
}
}
return false;
},
async create(this: IHookFunctions): Promise<boolean> {
const webhookUrl = this.getNodeWebhookUrl('default');
const endpoint = `/webhooks`;
// tslint:disable-next-line: no-any
const body : any = {
Url: webhookUrl,
Triggers: {
Open:{
Enabled: false,
PostFirstOpenOnly: false
},
Click:{
Enabled: false
},
Delivery:{
Enabled: false
},
Bounce:{
Enabled: false,
IncludeContent: false
},
SpamComplaint:{
Enabled: false,
IncludeContent: false
},
SubscriptionChange: {
Enabled: false
}
}
};
const events = this.getNodeParameter('events') as string[];
if (events.includes('open')) {
body.Triggers.Open.Enabled = true;
}
if (events.includes('firstOpen')) {
body.Triggers.Open.Enabled = true;
body.Triggers.Open.PostFirstOpenOnly = true;
}
if (events.includes('click')) {
body.Triggers.Click.Enabled = true;
}
if (events.includes('delivery')) {
body.Triggers.Delivery.Enabled = true;
}
if (events.includes('bounce')) {
body.Triggers.Bounce.Enabled = true;
}
if (events.includes('bounceContent')) {
body.Triggers.Bounce.IncludeContent = true;
}
if (events.includes('spamComplaint')) {
body.Triggers.SpamComplaint.Enabled = true;
}
if (events.includes('spamComplaintContent')) {
body.Triggers.SpamComplaint.IncludeContent = true;
}
if (events.includes('subscriptionChange')) {
body.Triggers.SubscriptionChange.Enabled = true;
}
const responseData = await postmarkApiRequest.call(this, 'POST', endpoint, body);
if (responseData.ID === undefined) {
// Required data is missing so was not successful
return false;
}
const webhookData = this.getWorkflowStaticData('node');
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 = `/webhooks/${webhookData.webhookId}`;
const body = {};
try {
await postmarkApiRequest.call(this, 'DELETE', endpoint, body);
} catch (e) {
return false;
}
// Remove from the static workflow data so that it is clear
// that no webhooks are registred anymore
delete webhookData.webhookId;
delete webhookData.webhookEvents;
}
return true;
},
},
};
async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
const req = this.getRequestObject();
return {
workflowData: [
this.helpers.returnJsonArray(req.body)
],
};
}
}