SUPER AUTH

auth.js

auth.singInWebapi = (user) => {
    return new $q((resolve, reject) => {
      const address = `${$API.url}Token`;
      const request = new XMLHttpRequest;

      const handleResponse = () => {
        const { status } = request;
        if (request.readyState === request.DONE) {
          if (status > 0) {
            const body = JSON.parse(request.response);
            const { access_token, error, error_description } = body;

            if (!(error || error_description)) {
              $rootScope.$broadcast('tokenReceived', access_token);
              resolve(body);
            } else {
              reject([error_description || error]);
            }
          } else {
            reject(Error('Request Failed'));
          }
        }
      };

      const creds = {
        username: user.Email,
        password: user.Password,
        grant_type: 'password'
      };

      const data = `username=${creds.username}&password=${creds.password}&grant_type=${creds.grant_type}`;

      request.onreadystatechange = handleResponse;
      request.open('POST', address)

      $API.httpHeaders.forEach((value, key) => {
        request.setRequestHeader(key, value);
      });

      request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')
      request.send(data);

    });
  };