authenticatedCall.js

const querystring = require('querystring');
const https = require('https');

const authenticatedCall = (url, options) =>
  new Promise((resolve, reject) => {
    const body = options.body && querystring.stringify(options.body);
    const json = options.json && JSON.stringify(options.json);
    const query = options.query
      ? `?${querystring.stringify(options.query)}`
      : '';
    if (body) {
      options.headers['Content-Type'] = 'application/x-www-form-urlencoded';
      options.headers['Content-Length'] = body.length;
    }
    if (json) {
      options.headers['Content-Type'] = 'application/json';
      options.headers['Content-Length'] = json.length;
    }
    const req = https.request(url + query, options, res => {
      if (res.statusCode === 200 || res.statusCode === 201) {
        res.data = '';
        res.on('data', d => {
          res.data += d;
        });
        res.on('end', () => {
          const parsedResponse = JSON.parse(res.data);
          if (parsedResponse.error) {
            reject(parsedResponse);
          }
          resolve(parsedResponse);
        });
      } else {
        const { statusCode, statusMessage } = res;
        reject({ statusCode, statusMessage });
      }
    });
    req.on('error', error => {
      reject(error);
    });
    if (body) {
      req.write(body);
    }
    if (json) {
      req.write(json);
    }
    req.end();
  });

module.exports = authenticatedCall;