first commit

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

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+import { createVerify } from 'crypto';
+import type {
+	IHookFunctions,
+	IWebhookFunctions,
+	IDataObject,
+	ILoadOptionsFunctions,
+	INodeType,
+	INodeTypeDescription,
+	IWebhookResponseData,
+} from 'n8n-workflow';
+import { NodeConnectionTypes } from 'n8n-workflow';
+
+import type { Profile } from './GenericFunctions';
+import { getTriggerName, livePublicKey, testPublicKey, wiseApiRequest } from './GenericFunctions';
+
+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: [NodeConnectionTypes.Main],
+		credentials: [
+			{
+				name: 'wiseApi',
+				required: true,
+			},
+		],
+		webhooks: [
+			{
+				name: 'default',
+				httpMethod: 'POST',
+				responseMode: 'onReceived',
+				path: 'webhook',
+			},
+		],
+		properties: [
+			{
+				displayName: 'Profile Name or ID',
+				name: 'profileId',
+				type: 'options',
+				description:
+					'Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>',
+				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: 'Balance Update',
+						value: 'balanceUpdate',
+						description: 'Triggered every time a balance account is credited or debited',
+					},
+					{
+						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,
+				}));
+			},
+		},
+	};
+
+	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');
+
+		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);
+
+		const sig = createVerify('RSA-SHA1').update(req.rawBody);
+		const verified = sig.verify(publicKey, signature, 'base64');
+
+		if (!verified) {
+			return {};
+		}
+
+		return {
+			workflowData: [this.helpers.returnJsonArray(req.body as IDataObject)],
+		};
+	}
+}