feat: Add Twilio Trigger Node

packages/nodes-base/nodes/Twilio/GenericFunctions.ts

@@ -4,6 +4,8 @@ import type {
 	IDataObject,
 	IHttpRequestMethods,
 	IRequestOptions,
+	IHttpRequestOptions,
+	ILoadOptionsFunctions,
 } from 'n8n-workflow';
 
 /**
@@ -40,6 +42,24 @@ export async function twilioApiRequest(
 	return await this.helpers.requestWithAuthentication.call(this, 'twilioApi', options);
 }
 
+export async function twilioTriggerApiRequest(
+	this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions,
+	method: IHttpRequestMethods,
+	endpoint: string,
+	body: FormData | IDataObject = {},
+): Promise<any> {
+	const options: IHttpRequestOptions = {
+		method,
+		body,
+		headers: {
+			'Content-Type': 'application/x-www-form-urlencoded',
+		},
+		url: `https://events.twilio.com/v1/${endpoint}`,
+		json: true,
+	};
+	return await this.helpers.requestWithAuthentication.call(this, 'twilioApi', options);
+}
+
 const XML_CHAR_MAP: { [key: string]: string } = {
 	'<': '&lt;',
 	'>': '&gt;',

packages/nodes-base/nodes/Twilio/TwilioTrigger.node.json

@@ -0,0 +1,19 @@
+{
+	"node": "n8n-nodes-base.twilioTrigger",
+	"nodeVersion": "1.0",
+	"codexVersion": "1.0",
+	"categories": ["Communication", "Development"],
+	"resources": {
+		"credentialDocumentation": [
+			{
+				"url": "https://docs.n8n.io/credentials/twilio"
+			}
+		],
+		"primaryDocumentation": [
+			{
+				"url": "https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.twilio-trigger/"
+			}
+		]
+	},
+	"alias": ["SMS", "Phone", "Voice"]
+}

packages/nodes-base/nodes/Twilio/TwilioTrigger.node.ts

@@ -0,0 +1,196 @@
+import type {
+	IHookFunctions,
+	IWebhookFunctions,
+	INodeType,
+	INodeTypeDescription,
+	IWebhookResponseData,
+} from 'n8n-workflow';
+
+import { twilioTriggerApiRequest } from './GenericFunctions';
+
+export class TwilioTrigger implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Twilio Trigger',
+		name: 'twilioTrigger',
+		icon: 'file:twilio.svg',
+		group: ['trigger'],
+		version: [1],
+		defaultVersion: 1,
+		subtitle: '=Updates: {{$parameter["updates"].join(", ")}}',
+		description: 'Starts the workflow on a Twilio update',
+		defaults: {
+			name: 'Twilio Trigger',
+		},
+		inputs: [],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'twilioApi',
+				required: true,
+			},
+		],
+		webhooks: [
+			{
+				name: 'default',
+				httpMethod: 'POST',
+				responseMode: 'onReceived',
+				path: 'webhook',
+			},
+		],
+		properties: [
+			{
+				displayName: 'Trigger On',
+				name: 'updates',
+				type: 'multiOptions',
+				options: [
+					{
+						name: 'New SMS',
+						value: 'com.twilio.messaging.inbound-message.received',
+						description: 'When an SMS message is received',
+					},
+					{
+						name: 'New Call',
+						value: 'com.twilio.voice.insights.call-summary.complete',
+						description: 'When a call is received',
+					},
+				],
+				required: true,
+				default: [],
+			},
+			{
+				displayName: "The 'New Call' event may take up to thirty minutes to be triggered",
+				name: 'callTriggerNotice',
+				type: 'notice',
+				default: '',
+				displayOptions: {
+					show: {
+						updates: ['com.twilio.voice.insights.call-summary.complete'],
+					},
+				},
+			},
+		],
+	};
+
+	webhookMethods = {
+		default: {
+			async checkExists(this: IHookFunctions): Promise<boolean> {
+				const webhookUrl = this.getNodeWebhookUrl('default');
+
+				const { sinks } = (await twilioTriggerApiRequest.call(this, 'GET', 'Sinks')) || {};
+
+				const sink = sinks.find(
+					(entry: { sink_configuration: { destination: string | undefined } }) =>
+						entry.sink_configuration.destination === webhookUrl,
+				);
+
+				if (sink) {
+					const { subscriptions } =
+						(await twilioTriggerApiRequest.call(this, 'GET', 'Subscriptions')) || {};
+
+					const subscription = subscriptions.find(
+						(entry: { sink_sid: any }) => entry.sink_sid === sink.sid,
+					);
+
+					if (subscription) {
+						const { types } =
+							(await twilioTriggerApiRequest.call(
+								this,
+								'GET',
+								`Subscriptions/${subscription.sid}/SubscribedEvents`,
+							)) || {};
+
+						const typesFound = types.map((type: { type: any }) => type.type);
+
+						const allowedUpdates = this.getNodeParameter('updates') as string[];
+
+						if (typesFound.sort().join(',') === allowedUpdates.sort().join(',')) {
+							return true;
+						} else {
+							return false;
+						}
+					}
+				}
+				return false;
+			},
+
+			async create(this: IHookFunctions): Promise<boolean> {
+				const workflowData = this.getWorkflowStaticData('node');
+				const webhookUrl = this.getNodeWebhookUrl('default');
+
+				const allowedUpdates = this.getNodeParameter('updates') as string[];
+
+				const bodySink = {
+					Description: 'Sink created by n8n Twilio Trigger Node.',
+					SinkConfiguration: `{	"destination": "${webhookUrl}",	"method": "POST"	}`,
+					SinkType: 'webhook',
+				};
+
+				const sink = await twilioTriggerApiRequest.call(this, 'POST', 'Sinks', bodySink);
+
+				workflowData.sinkId = sink.sid;
+
+				const body = {
+					Description: 'Subscription created by n8n Twilio Trigger Node.',
+					Types: `{ "type": "${allowedUpdates[0]}" }`,
+					SinkSid: sink.sid,
+				};
+
+				const subscription = await twilioTriggerApiRequest.call(
+					this,
+					'POST',
+					'Subscriptions',
+					body,
+				);
+				workflowData.subscriptionId = subscription.sid;
+				// if there is more than one event type add the others on the existing subscription
+				if (allowedUpdates.length > 1) {
+					for (let index = 1; index < allowedUpdates.length; index++) {
+						await twilioTriggerApiRequest.call(
+							this,
+							'POST',
+							`Subscriptions/${workflowData.subscriptionId}/SubscribedEvents`,
+							{
+								Type: allowedUpdates[index],
+							},
+						);
+					}
+				}
+
+				return true;
+			},
+
+			async delete(this: IHookFunctions): Promise<boolean> {
+				const workflowData = this.getWorkflowStaticData('node');
+				const sinkId = workflowData.sinkId;
+				const subscriptionId = workflowData.subscriptionId;
+
+				try {
+					if (sinkId) {
+						await twilioTriggerApiRequest.call(this, 'DELETE', `Sinks/${sinkId}`, {});
+						workflowData.sinkId = '';
+					}
+					if (subscriptionId) {
+						await twilioTriggerApiRequest.call(
+							this,
+							'DELETE',
+							`Subscriptions/${subscriptionId}`,
+							{},
+						);
+						workflowData.subscriptionId = '';
+					}
+				} catch (error) {
+					return false;
+				}
+				return true;
+			},
+		},
+	};
+
+	async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
+		const bodyData = this.getBodyData();
+
+		return {
+			workflowData: [this.helpers.returnJsonArray(bodyData)],
+		};
+	}
+}

packages/nodes-base/package.json

@@ -754,6 +754,7 @@
       "dist/nodes/Trello/TrelloTrigger.node.js",
       "dist/nodes/Twake/Twake.node.js",
       "dist/nodes/Twilio/Twilio.node.js",
+      "dist/nodes/Twilio/TwilioTrigger.node.js",
       "dist/nodes/Twist/Twist.node.js",
       "dist/nodes/Twitter/Twitter.node.js",
       "dist/nodes/Typeform/TypeformTrigger.node.js",