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

import {
	OptionsWithUri,
} from 'request';

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

import {
	IDataObject,
} from 'n8n-workflow';

export async function mailerliteApiRequest(this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IHookFunctions, method: string, path: string, body: any = {}, qs: IDataObject = {}, option = {}): Promise<any> { // tslint:disable-line:no-any

	const credentials = this.getCredentials('mailerLiteApi') as IDataObject;

	const options: OptionsWithUri = {
		headers: {
			'X-MailerLite-ApiKey': credentials.apiKey,
		},
		method,
		body,
		qs,
		uri: `https://api.mailerlite.com/api/v2${path}`,
		json: true,
	};
	try {
		if (Object.keys(body).length === 0) {
			delete options.body;
		}
		//@ts-ignore
		return await this.helpers.request.call(this, options);
	} catch (error) {
		if (error.response && error.response.body && error.response.body.error) {

			const message = error.response.body.error.message;

			// Try to return the error prettier
			throw new Error(
				`Mailer Lite error response [${error.statusCode}]: ${message}`,
			);
		}
		throw error;
	}
}

export async function mailerliteApiRequestAllItems(this: IExecuteFunctions | ILoadOptionsFunctions | IHookFunctions, method: string, endpoint: string, body: any = {}, query: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
	const returnData: IDataObject[] = [];

	let responseData;

	query.limit = 1000;
	query.offset = 0;

	do {
		responseData = await mailerliteApiRequest.call(this, method, endpoint, body, query);
		returnData.push.apply(returnData, responseData);
		query.offset = query.offset + query.limit;
	} while (
		responseData.length !== 0
	);
	return returnData;
}