import { ICredentialDataDecryptedObject, IDataObject, ILoadOptionsFunctions, INodePropertyOptions, INodeType, INodeTypeDescription, IWebhookFunctions, IWebhookResponseData, } from 'n8n-workflow'; import { IHookFunctions, } from 'n8n-core'; import { getAutomaticSecret, taigaApiRequest, } from './GenericFunctions'; // import { // createHmac, // } from 'crypto'; export class TaigaTrigger implements INodeType { description: INodeTypeDescription = { displayName: 'Taiga Trigger', name: 'taigaTrigger', icon: 'file:taiga.png', group: ['trigger'], version: 1, subtitle: '={{"project:" + $parameter["projectSlug"]}}', description: 'Handle Taiga events via webhook', defaults: { name: 'Taiga Trigger', color: '#772244', }, inputs: [], outputs: ['main'], credentials: [ { name: 'taigaCloudApi', displayOptions: { show: { version: [ 'cloud', ], }, }, required: true, }, { name: 'taigaServerApi', displayOptions: { show: { version: [ 'server', ], }, }, required: true, }, ], webhooks: [ { name: 'default', httpMethod: 'POST', responseMode: 'onReceived', path: 'webhook', }, ], properties: [ { displayName: 'Taiga Version', name: 'version', type: 'options', options: [ { name: 'Cloud', value: 'cloud', }, { name: 'Server (Self Hosted)', value: 'server', }, ], default: 'cloud', }, { displayName: 'Project ID', name: 'projectId', type: 'options', typeOptions: { loadOptionsMethod: 'getUserProjects', }, default: '', description: 'Project ID', required: true, }, ], }; methods = { loadOptions: { // Get all the available projects to display them to user so that he can // select them easily async getUserProjects(this: ILoadOptionsFunctions): Promise { const returnData: INodePropertyOptions[] = []; const { id } = await taigaApiRequest.call(this, 'GET', '/users/me'); const projects = await taigaApiRequest.call(this, 'GET', '/projects', {}, { member: id }); for (const project of projects) { const projectName = project.name; const projectId = project.id; returnData.push({ name: projectName, value: projectId, }); } return returnData; }, }, }; // @ts-ignore webhookMethods = { default: { async checkExists(this: IHookFunctions): Promise { const webhookUrl = this.getNodeWebhookUrl('default') as string; const webhookData = this.getWorkflowStaticData('node'); const endpoint = `/webhooks`; const webhooks = await taigaApiRequest.call(this, 'GET', endpoint); for (const webhook of webhooks) { if (webhook.url === webhookUrl) { webhookData.webhookId = webhook.id; webhookData.key = webhook.key; return true; } } return false; }, async create(this: IHookFunctions): Promise { const version = this.getNodeParameter('version') as string; let credentials; if (version === 'server') { credentials = this.getCredentials('taigaServerApi') as ICredentialDataDecryptedObject; } else { credentials = this.getCredentials('taigaCloudApi') as ICredentialDataDecryptedObject; } const webhookUrl = this.getNodeWebhookUrl('default') as string; const webhookData = this.getWorkflowStaticData('node'); const projectId = this.getNodeParameter('projectId') as string; const key = getAutomaticSecret(credentials); const body: IDataObject = { name: `n8n-webhook:${webhookUrl}`, url: webhookUrl, key, //can't validate the secret, see: https://github.com/taigaio/taiga-back/issues/1031 project: projectId, }; const { id } = await taigaApiRequest.call(this, 'POST', '/webhooks', body); webhookData.webhookId = id; webhookData.key = key; return true; }, async delete(this: IHookFunctions): Promise { const webhookData = this.getWorkflowStaticData('node'); try { await taigaApiRequest.call(this, 'DELETE', `/webhooks/${webhookData.webhookId}`); } catch (error) { return false; } delete webhookData.webhookId; delete webhookData.key; return true; }, }, }; async webhook(this: IWebhookFunctions): Promise { //const webhookData = this.getWorkflowStaticData('node'); const req = this.getRequestObject(); const bodyData = req.body; //const headerData = this.getHeaderData(); // TODO // Validate signature // https://github.com/taigaio/taiga-back/issues/1031 // //@ts-ignore // const requestSignature: string = headerData['x-taiga-webhook-signature']; // if (requestSignature === undefined) { // return {}; // } // //@ts-ignore // const computedSignature = createHmac('sha1', webhookData.key as string).update(JSON.stringify(bodyData)).digest('hex'); // if (requestSignature !== computedSignature) { // return {}; // } return { workflowData: [ this.helpers.returnJsonArray(bodyData), ], }; } }