⚡ Asana OAuth2 support (#669)

* OAuth2 support

* ⚡ Improvements

* ⚡ Improvements

* ⚡ Improvements to Asana Trigger Node

Co-authored-by: Rupenieks <ru@myos,co>
Co-authored-by: ricardo <ricardoespinoza105@gmail.com>
Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>

packages/nodes-base/credentials/AsanaApi.credentials.ts

@@ -3,7 +3,6 @@ import {
 	NodePropertyTypes,
 } from 'n8n-workflow';
 
-
 export class AsanaApi implements ICredentialType {
 	name = 'asanaApi';
 	displayName = 'Asana API';

packages/nodes-base/credentials/AsanaOAuth2Api.credentials.ts

@@ -0,0 +1,47 @@
+import {
+	ICredentialType,
+	NodePropertyTypes,
+} from 'n8n-workflow';
+
+export class AsanaOAuth2Api implements ICredentialType {
+	name = 'asanaOAuth2Api';
+	extends = [
+		'oAuth2Api',
+	];
+	displayName = 'Asana OAuth2 API';
+	properties = [
+		{
+			displayName: 'Authorization URL',
+			name: 'authUrl',
+			type: 'hidden' as NodePropertyTypes,
+			default: 'https://app.asana.com/-/oauth_authorize',
+			required: true,
+		},
+		{
+			displayName: 'Access Token URL',
+			name: 'accessTokenUrl',
+			type: 'hidden' as NodePropertyTypes,
+			default: 'https://app.asana.com/-/oauth_token',
+			required: true,
+		},
+		{
+			displayName: 'Scope',
+			name: 'scope',
+			type: 'hidden' as NodePropertyTypes,
+			default: '',
+		},
+		{
+			displayName: 'Auth URI Query Parameters',
+			name: 'authQueryParameters',
+			type: 'hidden' as NodePropertyTypes,
+			default: '',
+		},
+		{
+			displayName: 'Authentication',
+			name: 'authentication',
+			type: 'hidden' as NodePropertyTypes,
+			default: 'body',
+			description: 'Resource to consume.',
+		},
+	];
+}

packages/nodes-base/nodes/Asana/Asana.node.ts

@@ -14,6 +14,7 @@ import {
 import {
 	asanaApiRequest,
 	asanaApiRequestAllItems,
+	getWorkspaces,
 } from './GenericFunctions';
 
 export class Asana implements INodeType {
@@ -35,9 +36,44 @@ export class Asana implements INodeType {
 			{
 				name: 'asanaApi',
 				required: true,
+				displayOptions: {
+					show: {
+						authentication: [
+							'accessToken',
+						],
+					},
+				},
+			},
+			{
+				name: 'asanaOAuth2Api',
+				required: true,
+				displayOptions: {
+					show: {
+						authentication: [
+							'oAuth2',
+						],
+					},
+				},
 			},
 		],
 		properties: [
+			{
+				displayName: 'Authentication',
+				name: 'authentication',
+				type: 'options',
+				options: [
+					{
+						name: 'Access Token',
+						value: 'accessToken',
+					},
+					{
+						name: 'OAuth2',
+						value: 'oAuth2',
+					},
+				],
+				default: 'accessToken',
+				description: 'The resource to operate on.',
+			},
 			{
 				displayName: 'Resource',
 				name: 'resource',
@@ -1004,32 +1040,7 @@ export class Asana implements INodeType {
 		loadOptions: {
 			// Get all the available workspaces to display them to user so that he can
 			// select them easily
-			async getWorkspaces(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
-				const endpoint = '/workspaces';
-				const responseData = await asanaApiRequestAllItems.call(this, 'GET', endpoint, {});
-
-				const returnData: INodePropertyOptions[] = [];
-				for (const workspaceData of responseData) {
-					if (workspaceData.resource_type !== 'workspace') {
-						// Not sure if for some reason also ever other resources
-						// get returned but just in case filter them out
-						continue;
-					}
-
-					returnData.push({
-						name: workspaceData.name,
-						value: workspaceData.gid,
-					});
-				}
-
-				returnData.sort((a, b) => {
-					if (a.name < b.name) { return -1; }
-					if (a.name > b.name) { return 1; }
-					return 0;
-				});
-
-				return returnData;
-			},
+			getWorkspaces,
 
 			// Get all the available projects to display them to user so that they can be
 			// selected easily
@@ -1215,12 +1226,6 @@ export class Asana implements INodeType {
 		const items = this.getInputData();
 		const returnData: IDataObject[] = [];
 
-		const credentials = this.getCredentials('asanaApi');
-
-		if (credentials === undefined) {
-			throw new Error('No credentials got returned!');
-		}
-
 		const resource = this.getNodeParameter('resource', 0) as string;
 		const operation = this.getNodeParameter('operation', 0) as string;
 

packages/nodes-base/nodes/Asana/AsanaTrigger.node.ts

@@ -5,6 +5,8 @@ import {
 
 import {
 	IDataObject,
+	ILoadOptionsFunctions,
+	INodePropertyOptions,
 	INodeTypeDescription,
 	INodeType,
 	IWebhookResponseData,
@@ -12,9 +14,12 @@ import {
 
 import {
 	asanaApiRequest,
+	getWorkspaces,
 } from './GenericFunctions';
 
-import { createHmac } from 'crypto';
+import {
+	createHmac,
+} from 'crypto';
 
 export class AsanaTrigger implements INodeType {
 	description: INodeTypeDescription = {
@@ -26,7 +31,7 @@ export class AsanaTrigger implements INodeType {
 		description: 'Starts the workflow when Asana events occure.',
 		defaults: {
 			name: 'Asana-Trigger',
-			color: '#559922',
+			color: '#FC636B',
 		},
 		inputs: [],
 		outputs: ['main'],
@@ -34,7 +39,25 @@ export class AsanaTrigger implements INodeType {
 			{
 				name: 'asanaApi',
 				required: true,
-			}
+				displayOptions: {
+					show: {
+						authentication: [
+							'accessToken',
+						],
+					},
+				},
+			},
+			{
+				name: 'asanaOAuth2Api',
+				required: true,
+				displayOptions: {
+					show: {
+						authentication: [
+							'oAuth2',
+						],
+					},
+				},
+			},
 		],
 		webhooks: [
 			{
@@ -45,6 +68,23 @@ export class AsanaTrigger implements INodeType {
 			},
 		],
 		properties: [
+			{
+				displayName: 'Authentication',
+				name: 'authentication',
+				type: 'options',
+				options: [
+					{
+						name: 'Access Token',
+						value: 'accessToken',
+					},
+					{
+						name: 'OAuth2',
+						value: 'oAuth2',
+					},
+				],
+				default: 'accessToken',
+				description: 'The resource to operate on.',
+			},
 			{
 				displayName: 'Resource',
 				name: 'resource',
@@ -56,13 +96,31 @@ export class AsanaTrigger implements INodeType {
 			{
 				displayName: 'Workspace',
 				name: 'workspace',
-				type: 'string',
+				type: 'options',
+				typeOptions: {
+					loadOptionsMethod: 'getWorkspaces',
+				},
+				options: [],
 				default: '',
 				required: false,
 				description: 'The workspace ID the resource is registered under. This is only required if you want to allow overriding existing webhooks.',
 			},
 		],
+	};
 
+	methods = {
+		loadOptions: {
+			// Get all the available workspaces to display them to user so that he can
+			// select them easily
+			async getWorkspaces(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
+				const workspaces = await getWorkspaces.call(this);
+				workspaces.unshift({
+					name: '',
+					value: '',
+				});
+				return workspaces;
+			},
+		},
 	};
 
 	// @ts-ignore (because of request)
@@ -71,32 +129,29 @@ export class AsanaTrigger implements INodeType {
 			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 webhookUrl = this.getNodeWebhookUrl('default') as string;
+
+				const resource = this.getNodeParameter('resource') as string;
+
+				const workspace = this.getNodeParameter('workspace') as string;
+
+				const endpoint = '/webhooks';
+
+				const { data } = await asanaApiRequest.call(this, 'GET', endpoint, {}, { workspace });
+
+				for (const webhook of data) {
+					if (webhook.resource.gid === resource && webhook.target === webhookUrl) {
+						webhookData.webhookId = webhook.gid;
+						return true;
 					}
-
-				// Webhook got created before so check if it still exists
-				const endpoint = `webhooks/${webhookData.webhookId}`;
-
-				try {
-					await asanaApiRequest.call(this, 'GET', endpoint, {});
-				} catch (e) {
-					if (e.statusCode === 404) {
-						// Webhook does not exist
-						delete webhookData.webhookId;
-
-						return false;
-					}
-
-					// Some error occured
-					throw e;
 				}
 
 				// If it did not error then the webhook exists
-				return true;
+				return false;
 			},
 			async create(this: IHookFunctions): Promise<boolean> {
+				const webhookData = this.getWorkflowStaticData('node');
+
 				const webhookUrl = this.getNodeWebhookUrl('default') as string;
 
 				if (webhookUrl.includes('%20')) {
@@ -105,9 +160,7 @@ export class AsanaTrigger implements INodeType {
 
 				const resource = this.getNodeParameter('resource') as string;
 
-				const workspace = this.getNodeParameter('workspace') as string;
-
-				const endpoint = `webhooks`;
+				const endpoint = `/webhooks`;
 
 				const body = {
 					resource,
@@ -115,29 +168,15 @@ export class AsanaTrigger implements INodeType {
 				};
 
 				let responseData;
-				try {
-					 responseData = await asanaApiRequest.call(this, 'POST', endpoint, body);
-				} catch(error) {
-					// delete webhook if it already exists
-					if (error.statusCode === 403) {
-						const webhookData = await asanaApiRequest.call(this, 'GET', endpoint, {}, { workspace });
-						const webhook = webhookData.data.find((webhook: any) => { // tslint:disable-line:no-any
-							return webhook.target === webhookUrl && webhook.resource.gid === resource;
-						});
-						await asanaApiRequest.call(this, 'DELETE', `${endpoint}/${webhook.gid}`, {});
-						responseData = await asanaApiRequest.call(this, 'POST', endpoint, body);
-					} else {
-						throw error;
-					}
-				}
 
-				if (responseData.data === undefined || responseData.data.id === undefined) {
+				responseData = await asanaApiRequest.call(this, 'POST', endpoint, body);
+
+				if (responseData.data === undefined || responseData.data.gid === undefined) {
 					// Required data is missing so was not successful
 					return false;
 				}
 
-				const webhookData = this.getWorkflowStaticData('node');
-				webhookData.webhookId = responseData.data.id as string;
+				webhookData.webhookId = responseData.data.gid as string;
 
 				return true;
 			},
@@ -145,7 +184,7 @@ export class AsanaTrigger implements INodeType {
 				const webhookData = this.getWorkflowStaticData('node');
 
 				if (webhookData.webhookId !== undefined) {
-					const endpoint = `webhooks/${webhookData.webhookId}`;
+					const endpoint = `/webhooks/${webhookData.webhookId}`;
 					const body = {};
 
 					try {
@@ -165,15 +204,12 @@ export class AsanaTrigger implements INodeType {
 		},
 	};
 
-
-
 	async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
 		const bodyData = this.getBodyData() as IDataObject;
 		const headerData = this.getHeaderData() as IDataObject;
 		const req = this.getRequestObject();
 
-		const webhookData = this.getWorkflowStaticData('node') as IDataObject;
-
+		const webhookData = this.getWorkflowStaticData('node');
 
 		if (headerData['x-hook-secret'] !== undefined) {
 			// Is a create webhook confirmation request
@@ -182,6 +218,7 @@ export class AsanaTrigger implements INodeType {
 			const res = this.getResponseObject();
 			res.set('X-Hook-Secret', webhookData.hookSecret as string);
 			res.status(200).end();
+
 			return {
 				noWebhookResponse: true,
 			};
@@ -198,7 +235,7 @@ export class AsanaTrigger implements INodeType {
 
 		// Check if the request is valid
 		// (if the signature matches to data and hookSecret)
-		const computedSignature = createHmac("sha256", webhookData.hookSecret as string).update(JSON.stringify(req.body)).digest("hex");
+		const computedSignature = createHmac('sha256', webhookData.hookSecret as string).update(JSON.stringify(req.body)).digest('hex');
 		if (headerData['x-hook-signature'] !== computedSignature) {
 			// Signature is not valid so ignore call
 			return {};
@@ -206,7 +243,7 @@ export class AsanaTrigger implements INodeType {
 
 		return {
 			workflowData: [
-				this.helpers.returnJsonArray(req.body)
+				this.helpers.returnJsonArray(req.body.events)
 			],
 		};
 	}

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

@@ -10,6 +10,7 @@ import {
 
 import {
 	IDataObject,
+	INodePropertyOptions,
 } from 'n8n-workflow';
 
 import {
@@ -26,16 +27,10 @@ import {
  * @returns {Promise<any>}
  */
 export async function asanaApiRequest(this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions, method: string, endpoint: string, body: object, query?: object, uri?: string | undefined): Promise<any> { // tslint:disable-line:no-any
-	const credentials = this.getCredentials('asanaApi');
-
-	if (credentials === undefined) {
-		throw new Error('No credentials got returned!');
-	}
+	const authenticationMethod = this.getNodeParameter('authentication', 0);
 
 	const options: OptionsWithUri = {
-		headers: {
-			Authorization: `Bearer ${credentials.accessToken}`,
-		},
+		headers: {},
 		method,
 		body: { data: body },
 		qs: query,
@@ -44,13 +39,30 @@ export async function asanaApiRequest(this: IHookFunctions | IExecuteFunctions |
 	};
 
 	try {
+		if (authenticationMethod === 'accessToken') {
+			const credentials = this.getCredentials('asanaApi');
+
+			if (credentials === undefined) {
+				throw new Error('No credentials got returned!');
+			}
+
+			options.headers!['Authorization'] = `Bearer ${credentials.accessToken}`;
+
 			return await this.helpers.request!(options);
+		} else {
+			//@ts-ignore
+			return await this.helpers.requestOAuth2.call(this, 'asanaOAuth2Api', options);
+		}
 	} catch (error) {
 		if (error.statusCode === 401) {
 			// Return a clear error
 			throw new Error('The Asana credentials are not valid!');
 		}
 
+		if (error.statusCode === 403) {
+			throw error;
+		}
+
 		if (error.response && error.response.body && error.response.body.errors) {
 			// Try to return the error prettier
 			const errorMessages = error.response.body.errors.map((errorData: { message: string }) => {
@@ -82,3 +94,30 @@ export async function asanaApiRequestAllItems(this: IExecuteFunctions | ILoadOpt
 
 	return returnData;
 }
+
+export async function getWorkspaces(this: ILoadOptionsFunctions): Promise < INodePropertyOptions[] > {
+	const endpoint = '/workspaces';
+	const responseData = await asanaApiRequestAllItems.call(this, 'GET', endpoint, {});
+
+	const returnData: INodePropertyOptions[] = [];
+	for(const workspaceData of responseData) {
+		if (workspaceData.resource_type !== 'workspace') {
+			// Not sure if for some reason also ever other resources
+			// get returned but just in case filter them out
+			continue;
+		}
+
+		returnData.push({
+			name: workspaceData.name,
+			value: workspaceData.gid,
+		});
+	}
+
+				returnData.sort((a, b) => {
+		if (a.name < b.name) { return -1; }
+		if (a.name > b.name) { return 1; }
+		return 0;
+	});
+
+	return returnData;
+}

packages/nodes-base/package.json

@@ -33,6 +33,7 @@
       "dist/credentials/AirtableApi.credentials.js",
       "dist/credentials/Amqp.credentials.js",
       "dist/credentials/AsanaApi.credentials.js",
+      "dist/credentials/AsanaOAuth2Api.credentials.js",
       "dist/credentials/Aws.credentials.js",
       "dist/credentials/AffinityApi.credentials.js",
       "dist/credentials/BannerbearApi.credentials.js",