import { IExecuteFunctions } from 'n8n-core'; import { IDataObject, ILoadOptionsFunctions, INodeExecutionData, INodePropertyOptions, INodeType, INodeTypeDescription, } from 'n8n-workflow'; import { bannerbearApiRequest, keysToSnakeCase } from './GenericFunctions'; import { imageFields, imageOperations } from './ImageDescription'; import { templateFields, templateOperations } from './TemplateDescription'; export class Bannerbear implements INodeType { description: INodeTypeDescription = { displayName: 'Bannerbear', name: 'bannerbear', // eslint-disable-next-line n8n-nodes-base/node-class-description-icon-not-svg icon: 'file:bannerbear.png', group: ['output'], version: 1, subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}', description: 'Consume Bannerbear API', defaults: { name: 'Bannerbear', }, inputs: ['main'], outputs: ['main'], credentials: [ { name: 'bannerbearApi', required: true, }, ], properties: [ { displayName: 'Resource', name: 'resource', type: 'options', noDataExpression: true, options: [ { name: 'Image', value: 'image', }, { name: 'Template', value: 'template', }, ], default: 'image', }, // IMAGE ...imageOperations, ...imageFields, // TEMPLATE ...templateOperations, ...templateFields, ], }; methods = { loadOptions: { // Get all the available templates to display them to user so that he can // select them easily async getTemplates(this: ILoadOptionsFunctions): Promise { const returnData: INodePropertyOptions[] = []; const templates = await bannerbearApiRequest.call(this, 'GET', '/templates'); for (const template of templates) { const templateName = template.name; const templateId = template.uid; returnData.push({ name: templateName, value: templateId, }); } return returnData; }, // Get all the available modifications to display them to user so that he can // select them easily async getModificationNames(this: ILoadOptionsFunctions): Promise { const templateId = this.getCurrentNodeParameter('templateId'); const returnData: INodePropertyOptions[] = []; const { available_modifications } = await bannerbearApiRequest.call( this, 'GET', `/templates/${templateId}`, ); for (const modification of available_modifications) { const modificationName = modification.name; const modificationId = modification.name; returnData.push({ name: modificationName, value: modificationId, }); } return returnData; }, }, }; async execute(this: IExecuteFunctions): Promise { const items = this.getInputData(); const returnData: IDataObject[] = []; const length = items.length; let responseData; const resource = this.getNodeParameter('resource', 0) as string; const operation = this.getNodeParameter('operation', 0) as string; for (let i = 0; i < length; i++) { if (resource === 'image') { //https://developers.bannerbear.com/#create-an-image if (operation === 'create') { const templateId = this.getNodeParameter('templateId', i) as string; const additionalFields = this.getNodeParameter('additionalFields', i) as IDataObject; const modifications = (this.getNodeParameter('modificationsUi', i) as IDataObject) .modificationsValues as IDataObject; const body: IDataObject = { template: templateId, }; if (additionalFields.webhookUrl) { body.webhook_url = additionalFields.webhookUrl as string; } if (additionalFields.metadata) { body.metadata = additionalFields.metadata as string; } if (modifications) { body.modifications = keysToSnakeCase(modifications) as IDataObject[]; // delete all fields set to empty for (const modification of body.modifications as IDataObject[]) { for (const key of Object.keys(modification)) { if (modification[key] === '') { delete modification[key]; } } } } responseData = await bannerbearApiRequest.call(this, 'POST', '/images', body); if (additionalFields.waitForImage && responseData.status !== 'completed') { let maxTries = (additionalFields.waitForImageMaxTries as number) || 3; const promise = (uid: string) => { let data: IDataObject = {}; return new Promise((resolve, reject) => { const timeout = setInterval(async () => { data = await bannerbearApiRequest.call(this, 'GET', `/images/${uid}`); if (data.status === 'completed') { clearInterval(timeout); resolve(data); } if (--maxTries === 0) { clearInterval(timeout); reject(new Error('Image did not finish processing after multiple tries.')); } }, 2000); }); }; responseData = await promise(responseData.uid); } } //https://developers.bannerbear.com/#get-a-specific-image if (operation === 'get') { const imageId = this.getNodeParameter('imageId', i) as string; responseData = await bannerbearApiRequest.call(this, 'GET', `/images/${imageId}`); } } if (resource === 'template') { //https://developers.bannerbear.com/#get-a-specific-template if (operation === 'get') { const templateId = this.getNodeParameter('templateId', i) as string; responseData = await bannerbearApiRequest.call(this, 'GET', `/templates/${templateId}`); } //https://developers.bannerbear.com/#list-templates if (operation === 'getAll') { responseData = await bannerbearApiRequest.call(this, 'GET', '/templates'); } } if (Array.isArray(responseData)) { returnData.push.apply(returnData, responseData as IDataObject[]); } else { returnData.push(responseData); } } return [this.helpers.returnJsonArray(returnData)]; } }