const parseString = require('xml2js').parseString;
import fetch from 'node-fetch';
import { Result } from '../types';

type Response = {
  body: string;
  tokenValue: string;
};

const fetchData = ({ body, tokenValue }: Response): Promise<Result> => {
  return new Promise((resolve, reject) => {
    if (!body || !tokenValue) {
      reject(new Error('Error with credentials'));
    } else {
      fetch('https://lite.realtime.nationalrail.co.uk/OpenLDBWS/ldb11.asmx', {
        method: 'POST',
        headers: {
          'Content-Type': 'text/xml',
        },
        body: `<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:typ="http://thalesgroup.com/RTTI/2013-11-28/Token/types" xmlns:ldb="http://thalesgroup.com/RTTI/2017-10-01/ldb/">
                  <soap:Header>
                    <typ:AccessToken>
                      <typ:TokenValue>${tokenValue}</typ:TokenValue>
                    </typ:AccessToken>
                  </soap:Header>
                  <soap:Body>
                    ${body}
                  </soap:Body>
                </soap:Envelope>`,
      })
        .then(response => response.text())
        .then(response => response.replace(/(<\/?)(\w*:)/gm, '$1'))
        .then(response => {
          parseString(response, (error: Error, result: any) => {
            if (error) {
              return reject(error);
            } else {
              return resolve(result.Envelope.Body[0]);
            }
          });
        })
        .catch((err: Error) => {
          // console.error("Error returned from fetch", err);
          return reject(err);
        });
    }
  });
};

export default fetchData;