n8n/packages/nodes-base/nodes/FormIo/GenericFunctions.ts

import {
	IExecuteFunctions,
	ILoadOptionsFunctions,
} from 'n8n-core';

import {
	IDataObject,
	IHookFunctions,
	IWebhookFunctions,
	NodeApiError,
} from 'n8n-workflow';


interface IFormIoCredentials {
	environment: 'cloudHosted' | ' selfHosted';
	domain?: string;
	email: string,
	password: string,
}

/**
 * Method has the logic to get jwt token from Form.io
 * @param this
 */
async function getToken(this: IExecuteFunctions | IWebhookFunctions | IHookFunctions | ILoadOptionsFunctions, credentials: IFormIoCredentials) {
	const base = credentials.domain || 'https://formio.form.io';
	const options = {
		headers: {
			'Content-Type': 'application/json',
		},
		method: 'POST',
		body: {
			data: {
				email: credentials.email,
				password: credentials.password,
			},
		},
		uri: `${base}/user/login`,
		json: true,
		resolveWithFullResponse: true,
	};

	console.log('options');
	console.log(JSON.stringify(options, null, 2));

	try {
		const responseObject = await this.helpers.request!(options);
		return responseObject.headers['x-jwt-token'];
	} catch (error) {
		throw new Error(`Authentication Failed for Form.io. Please provide valid credentails/ endpoint details`);
	}
}

/**
 * Method will call register or list webhooks based on the passed method in the parameter
 * @param this
 * @param method
 */
export async function formIoApiRequest(this: IHookFunctions | ILoadOptionsFunctions | IWebhookFunctions, method: string, endpoint: string, body = {}, qs = {}): Promise<any> { // tslint:disable-line:no-any

	const credentials = await this.getCredentials('formIoApi') as unknown as IFormIoCredentials;

	const token = await getToken.call(this, credentials);

	const base = credentials.domain || 'https://api.form.io';

	const options = {
		headers: {
			'Content-Type': 'application/json',
			'x-jwt-token': token,
		},
		method,
		body,
		qs,
		uri: `${base}${endpoint}`,
		json: true,
	};

	try {
		return await this.helpers.request!.call(this, options);
	} catch (error) {
		throw new NodeApiError(this.getNode(), error);
	}
}