n8n/packages/nodes-base/nodes/Taiga/TaigaTrigger.node.ts
2021-11-25 14:12:31 +01:00

256 lines
5.6 KiB
TypeScript

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.svg',
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: 'taigaApi',
required: true,
},
],
webhooks: [
{
name: 'default',
httpMethod: 'POST',
responseMode: 'onReceived',
path: 'webhook',
},
],
properties: [
{
displayName: 'Project ID',
name: 'projectId',
type: 'options',
typeOptions: {
loadOptionsMethod: 'getUserProjects',
},
default: '',
description: 'Project ID',
required: true,
},
{
displayName: 'Resources',
name: 'resources',
type: 'multiOptions',
required: true,
default: [
'all',
],
options: [
{
name: 'All',
value: 'all',
},
{
name: 'Issue',
value: 'issue',
},
{
name: 'Milestone (Sprint)',
value: 'milestone',
},
{
name: 'Task',
value: 'task',
},
{
name: 'User Story',
value: 'userstory',
},
{
name: 'Wikipage',
value: 'wikipage',
},
],
description: 'Resources to listen to',
},
{
displayName: 'Operations',
name: 'operations',
type: 'multiOptions',
required: true,
default: [
'all',
],
description: 'Operations to listen to',
options: [
{
name: 'All',
value: 'all',
},
{
name: 'Create',
value: 'create',
},
{
name: 'Delete',
value: 'delete',
},
{
name: 'Update',
value: 'change',
},
],
},
],
};
methods = {
loadOptions: {
// Get all the available projects to display them to user so that he can
// select them easily
async getUserProjects(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
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<boolean> {
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<boolean> {
const credentials = await this.getCredentials('taigaApi') 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,
project: projectId,
};
const { id } = await taigaApiRequest.call(this, 'POST', '/webhooks', body);
webhookData.webhookId = id;
webhookData.key = key;
return true;
},
async delete(this: IHookFunctions): Promise<boolean> {
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<IWebhookResponseData> {
const body = this.getRequestObject().body as WebhookPayload;
const operations = this.getNodeParameter('operations', []) as Operations[];
const resources = this.getNodeParameter('resources', []) as Resources[];
if (!operations.includes('all') && !operations.includes(body.action)) {
return {};
}
if (!resources.includes('all') && !resources.includes(body.type)) {
return {};
}
// TODO: Signature does not match payload hash
// https://github.com/taigaio/taiga-back/issues/1031
// const webhookData = this.getWorkflowStaticData('node');
// const headerData = this.getHeaderData();
// // @ts-ignore
// const requestSignature = headerData['x-taiga-webhook-signature'];
// if (requestSignature === undefined) {
// return {};
// }
// const computedSignature = createHmac('sha1', webhookData.key as string).update(JSON.stringify(body)).digest('hex');
// if (requestSignature !== computedSignature) {
// return {};
// }
return {
workflowData: [
this.helpers.returnJsonArray(body),
],
};
}
}