✨ Paypal trigger done

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

@@ -5,6 +5,7 @@ import {
 	IHookFunctions,
 	ILoadOptionsFunctions,
 	IExecuteSingleFunctions,
+	IWebhookFunctions,
 	BINARY_ENCODING
 } from 'n8n-core';
 
@@ -12,7 +13,7 @@ import {
 	IDataObject,
 } from 'n8n-workflow';
 
-export async function paypalApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, endpoint: string, method: string, body: any = {}, query?: IDataObject, uri?: string): Promise<any> { // tslint:disable-line:no-any
+export async function paypalApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IWebhookFunctions, endpoint: string, method: string, body: any = {}, query?: IDataObject, uri?: string): Promise<any> { // tslint:disable-line:no-any
 	const credentials = this.getCredentials('paypalApi');
 	const env = getEnviroment(credentials!.env as string);
 	const tokenInfo =  await getAccessToken.call(this);
@@ -29,11 +30,6 @@ export async function paypalApiRequest(this: IHookFunctions | IExecuteFunctions
 	try {
 		return await this.helpers.request!(options);
 	} catch (error) {
-		const errorMessage = error.response.body.message || error.response.body.Message;
-
-		if (errorMessage !== undefined) {
-			throw errorMessage;
-		}
 		throw error.response.body;
 	}
 }
@@ -46,7 +42,7 @@ function getEnviroment(env: string): string {
 	}[env];
 }
 
-async function getAccessToken(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions): Promise<any> { // tslint:disable-line:no-any
+async function getAccessToken(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IWebhookFunctions): Promise<any> { // tslint:disable-line:no-any
 	const credentials = this.getCredentials('paypalApi');
 	if (credentials === undefined) {
 		throw new Error('No credentials got returned!');
@@ -116,3 +112,9 @@ export function validateJSON(json: string | undefined): any { // tslint:disable-
 	}
 	return result;
 }
+
+export function upperFist(s: string): string {
+	return s.split('.').map(e => {
+		return e.toLowerCase().charAt(0).toUpperCase() + e.toLowerCase().slice(1);
+	}).join(' ');
+}

packages/nodes-base/nodes/Paypal/PayPalTrigger.node.ts

@@ -0,0 +1,195 @@
+import {
+	IHookFunctions,
+	IWebhookFunctions,
+  } from 'n8n-core';
+
+  import {
+	IDataObject,
+	INodeTypeDescription,
+	INodeType,
+	IWebhookResponseData,
+	ILoadOptionsFunctions,
+	INodePropertyOptions,
+  } from 'n8n-workflow';
+  import {
+	paypalApiRequest,
+	upperFist
+ } from './GenericFunctions';
+import { queryResult } from 'pg-promise';
+
+  export class PayPalTrigger implements INodeType {
+	description: INodeTypeDescription = {
+	  displayName: 'PayPal Trigger',
+	  name: 'PayPal',
+	  icon: 'file:paypal.png',
+	  group: ['trigger'],
+	  version: 1,
+	  description: 'Handle PayPal events via webhooks',
+	  defaults: {
+		name: 'PayPal Trigger',
+		color: '#32325d',
+	  },
+	  inputs: [],
+	  outputs: ['main'],
+	  credentials: [
+			  {
+				  name: 'paypalApi',
+				  required: true,
+			  }
+		  ],
+	  webhooks: [
+		{
+		  name: 'default',
+		  httpMethod: 'POST',
+		  reponseMode: 'onReceived',
+		  path: 'webhook',
+		},
+	  ],
+	  properties: [
+		{
+			displayName: 'Events',
+			name: 'events',
+			type: 'multiOptions',
+			required: true,
+			default: [],
+			description: 'The event to listen to.',
+			typeOptions: {
+				loadOptionsMethod: 'getEvents'
+			},
+			options: [],
+		},
+	  ],
+	};
+
+	methods = {
+		loadOptions: {
+			// Get all the events types to display them to user so that he can
+			// select them easily
+			async getEvents(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
+				const returnData: INodePropertyOptions[] = [];
+				let events;
+				try {
+					const endpoint = '/notifications/webhooks-event-types';
+					events = await paypalApiRequest.call(this, endpoint, 'GET');
+				} catch (err) {
+					throw new Error(`PayPal Error: ${err}`);
+				}
+				for (const event of events.event_types) {
+					const eventName = upperFist(event.name);
+					const eventId = event.name;
+					const eventDescription = event.description;
+
+					returnData.push({
+						name: eventName,
+						value: eventId,
+						description: eventDescription,
+					});
+				}
+				return returnData;
+			},
+		},
+	};
+	// @ts-ignore (because of request)
+	webhookMethods = {
+		default: {
+			async checkExists(this: IHookFunctions): Promise<boolean> {
+				const webhookData = this.getWorkflowStaticData('node');
+				if (webhookData.webhookId === undefined) {
+					// No webhook id is set so no webhook can exist
+					return false;
+				}
+				const endpoint = `/notifications/webhooks/${webhookData.webhookId}`;
+				try {
+					await paypalApiRequest.call(this, endpoint, 'GET');
+				} catch (err) {
+					if (err.response && err.response.name === 'INVALID_RESOURCE_ID') {
+						// Webhook does not exist
+						delete webhookData.webhookId;
+						return false;
+					}
+					throw new Error(`PayPal Error: ${err}`);
+				}
+				return true;
+			},
+
+			async create(this: IHookFunctions): Promise<boolean> {
+				let webhook;
+				const webhookUrl = this.getNodeWebhookUrl('default');
+				const events = this.getNodeParameter('events', []) as string[];
+				const body = {
+					url: webhookUrl,
+					event_types: events.map(event => {
+						return { name: event };
+					 }),
+				};
+				const endpoint = '/notifications/webhooks';
+				try {
+					webhook = await paypalApiRequest.call(this, endpoint, 'POST', body);
+				} catch (e) {
+					throw e;
+				}
+
+				if (webhook.id === undefined) {
+					return false;
+				}
+				const webhookData = this.getWorkflowStaticData('node');
+				webhookData.webhookId = webhook.id as string;
+				return true;
+			},
+
+			async delete(this: IHookFunctions): Promise<boolean> {
+				const webhookData = this.getWorkflowStaticData('node');
+				if (webhookData.webhookId !== undefined) {
+					const endpoint = `/notifications/webhooks/${webhookData.webhookId}`;
+					try {
+						await paypalApiRequest.call(this, endpoint, 'DELETE', {});
+					} catch (e) {
+						return false;
+					}
+					delete webhookData.webhookId;
+				}
+				return true;
+			},
+		},
+	  };
+
+	async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
+		let webhook;
+		const webhookData = this.getWorkflowStaticData('node') as IDataObject;
+		const bodyData = this.getBodyData() as IDataObject;
+		const req = this.getRequestObject();
+		const headerData = this.getHeaderData() as IDataObject;
+		const endpoint = '/notifications/verify-webhook-signature';
+
+		if (headerData['PAYPAL-AUTH-ALGO'] !== undefined
+		&& headerData['PAYPAL-CERT-URL'] !== undefined
+		&& headerData['PAYPAL-TRANSMISSION-ID'] !== undefined
+		&& headerData['PAYPAL-TRANSMISSION-SIG'] !== undefined
+		&& headerData['PAYPAL-TRANSMISSION-TIME'] !== undefined) {
+			const body = {
+				auth_algo: headerData['PAYPAL-AUTH-ALGO'],
+				cert_url: headerData['PAYPAL-CERT-URL'],
+				transmission_id: headerData['PAYPAL-TRANSMISSION-ID'],
+				transmission_sig: headerData['PAYPAL-TRANSMISSION-SIG'],
+				transmission_time: headerData['PAYPAL-TRANSMISSION-TIME'],
+				webhook_id: webhookData.webhookId,
+				webhook_event: bodyData,
+			};
+			try {
+				webhook = await paypalApiRequest.call(this, endpoint, 'POST', body);
+			} catch (e) {
+				throw e;
+			}
+			if (webhook.verification_status !== 'SUCCESS') {
+				return {};
+			}
+		} else {
+			return {};
+		}
+		return {
+			workflowData: [
+				this.helpers.returnJsonArray(req.body)
+			],
+		};
+	}
+  }

packages/nodes-base/nodes/Paypal/PaypalTriger.node.ts

@@ -1,121 +0,0 @@
-import {
-	IHookFunctions,
-	IWebhookFunctions,
-  } from 'n8n-core';
-
-  import {
-	IDataObject,
-	INodeTypeDescription,
-	INodeType,
-	IWebhookResponseData,
-	ILoadOptionsFunctions,
-	INodePropertyOptions,
-  } from 'n8n-workflow';
-  import {
-	paypalApiRequest,
- } from './GenericFunctions';
-
-  export class PayPalTrigger implements INodeType {
-	description: INodeTypeDescription = {
-	  displayName: 'PayPal Trigger',
-	  name: 'PayPal',
-	  icon: 'file:paypal.png',
-	  group: ['trigger'],
-	  version: 1,
-	  description: 'Handle PayPal events via webhooks',
-	  defaults: {
-		name: 'PayPal Trigger',
-		color: '#32325d',
-	  },
-	  inputs: [],
-	  outputs: ['main'],
-	  credentials: [
-			  {
-				  name: 'paypalApi',
-				  required: true,
-			  }
-		  ],
-	  webhooks: [
-		{
-		  name: 'default',
-		  httpMethod: 'POST',
-		  reponseMode: 'onReceived',
-		  path: 'webhook',
-		},
-	  ],
-	  properties: [
-		{
-		  displayName: 'Events',
-		  name: 'events',
-		  type: 'multiOptions',
-		  required: true,
-		  default: [],
-		  description: 'The event to listen to.',
-		  typeOptions: {
-			  loadOptionsMethod: 'getEvents'
-		  }
-		}
-	  ],
-	};
-
-	methods = {
-		loadOptions: {
-			// Get all the events types to display them to user so that he can
-			// select them easily
-			async getEvents(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
-				const returnData: INodePropertyOptions[] = [];
-				let events;
-				try {
-					events = await paypalApiRequest.call(this, '/webhooks-event-types', 'GET');
-				} catch (err) {
-					throw new Error(`PayPal Error: ${err}`);
-				}
-				for (const event of events.event_types) {
-					const eventName = event.name;
-					const eventId = event.name;
-					const eventDescription = event.description;
-
-					returnData.push({
-						name: eventName,
-						value: eventId,
-						description: eventDescription,
-					});
-				}
-				return returnData;
-			},
-		},
-	};
-
-	// @ts-ignore (because of request)
-	  webhookMethods = {
-		  default: {
-			  async checkExists(this: IHookFunctions): Promise<boolean> {
-		  const webhookData = this.getWorkflowStaticData('node');
-
-
-				  return true;
-			  },
-			  async delete(this: IHookFunctions): Promise<boolean> {
-				  const webhookData = this.getWorkflowStaticData('node');
-
-
-				  return true;
-			  },
-		  },
-	  };
-
-	async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
-	  const bodyData = this.getBodyData() as IDataObject;
-		  const req = this.getRequestObject();
-
-		  const events = this.getNodeParameter('events', []) as string[];
-
-		  const eventType = bodyData.type as string | undefined;
-
-		  return {
-			  workflowData: [
-				  this.helpers.returnJsonArray(req.body)
-			  ],
-		  };
-	}
-  }

packages/nodes-base/package.json

@@ -110,8 +110,8 @@
             "dist/nodes/Pipedrive/Pipedrive.node.js",
             "dist/nodes/Pipedrive/PipedriveTrigger.node.js",
 			"dist/nodes/Postgres/Postgres.node.js",
-			"dist/nodes/Paypal/Paypal.node.js",
+			"dist/nodes/Paypal/PayPal.node.js",
-			"dist/nodes/Paypal/PaypalTriger.node.js",
+			"dist/nodes/Paypal/PayPalTrigger.node.js",
             "dist/nodes/Rocketchat/Rocketchat.node.js",
             "dist/nodes/ReadBinaryFile.node.js",
             "dist/nodes/ReadBinaryFiles.node.js",