n8n/packages/nodes-base/nodes/Wise/WiseTrigger.node.ts

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import {
IHookFunctions,
IWebhookFunctions,
} from 'n8n-core';
import {
IDataObject,
ILoadOptionsFunctions,
INodeType,
INodeTypeDescription,
IWebhookResponseData,
} from 'n8n-workflow';
import {
getTriggerName,
livePublicKey,
Profile,
testPublicKey,
wiseApiRequest,
} from './GenericFunctions';
import {
createVerify,
} from 'crypto';
export class WiseTrigger implements INodeType {
description: INodeTypeDescription = {
displayName: 'Wise Trigger',
name: 'wiseTrigger',
icon: 'file:wise.svg',
group: ['trigger'],
version: 1,
subtitle: '={{$parameter["event"]}}',
description: 'Handle Wise events via webhooks',
defaults: {
name: 'Wise Trigger',
},
inputs: [],
outputs: ['main'],
credentials: [
{
name: 'wiseApi',
required: true,
},
],
webhooks: [
{
name: 'default',
httpMethod: 'POST',
responseMode: 'onReceived',
path: 'webhook',
},
],
properties: [
{
displayName: 'Profile',
name: 'profileId',
type: 'options',
required: true,
typeOptions: {
loadOptionsMethod: 'getProfiles',
},
default: '',
},
{
displayName: 'Event',
name: 'event',
type: 'options',
required: true,
default: '',
options: [
{
name: 'Balance Credit',
value: 'balanceCredit',
description: 'Triggered every time a balance account is credited.',
},
{
name: 'Transfer Active Case',
value: 'transferActiveCases',
description: `Triggered every time a transfer's list of active cases is updated.`,
},
{
name: 'Transfer State Changed',
value: 'tranferStateChange',
description: `Triggered every time a transfer's status is updated.`,
},
],
},
],
};
methods = {
loadOptions: {
async getProfiles(this: ILoadOptionsFunctions) {
const profiles = await wiseApiRequest.call(this, 'GET', 'v1/profiles');
return profiles.map(({ id, type }: Profile) => ({
name: type.charAt(0).toUpperCase() + type.slice(1),
value: id,
}));
},
},
};
// @ts-ignore
webhookMethods = {
default: {
async checkExists(this: IHookFunctions): Promise<boolean> {
const webhookData = this.getWorkflowStaticData('node');
const webhookUrl = this.getNodeWebhookUrl('default');
const profileId = this.getNodeParameter('profileId') as string;
const event = this.getNodeParameter('event') as string;
const webhooks = await wiseApiRequest.call(this, 'GET', `v3/profiles/${profileId}/subscriptions`);
const trigger = getTriggerName(event);
for (const webhook of webhooks) {
if (webhook.delivery.url === webhookUrl && webhook.scope.id === profileId && webhook.trigger_on === trigger) {
webhookData.webhookId = webhook.id;
return true;
}
}
return false;
},
async create(this: IHookFunctions): Promise<boolean> {
const webhookUrl = this.getNodeWebhookUrl('default');
const webhookData = this.getWorkflowStaticData('node');
const profileId = this.getNodeParameter('profileId') as string;
const event = this.getNodeParameter('event') as string;
const trigger = getTriggerName(event);
const body: IDataObject = {
name: `n8n Webhook`,
trigger_on: trigger,
delivery: {
version: '2.0.0',
url: webhookUrl,
},
};
const webhook = await wiseApiRequest.call(this, 'POST', `v3/profiles/${profileId}/subscriptions`, body);
webhookData.webhookId = webhook.id;
return true;
},
async delete(this: IHookFunctions): Promise<boolean> {
const webhookData = this.getWorkflowStaticData('node');
const profileId = this.getNodeParameter('profileId') as string;
try {
await wiseApiRequest.call(this, 'DELETE', `v3/profiles/${profileId}/subscriptions/${webhookData.webhookId}`);
} catch (error) {
return false;
}
delete webhookData.webhookId;
return true;
},
},
};
async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
const req = this.getRequestObject();
const headers = this.getHeaderData() as IDataObject;
const credentials = await this.getCredentials('wiseApi') as IDataObject;
if (headers['x-test-notification'] === 'true') {
const res = this.getResponseObject();
res.status(200).end();
return {
noWebhookResponse: true,
};
}
const signature = headers['x-signature'] as string;
const publicKey = (credentials.environment === 'test') ? testPublicKey : livePublicKey as string;
//@ts-ignore
const sig = createVerify('RSA-SHA1').update(req.rawBody);
const verified = sig.verify(
publicKey,
signature,
'base64',
);
if (verified === false) {
return {};
}
return {
workflowData: [
this.helpers.returnJsonArray(req.body),
],
};
}
}