Make signed-in requests to LDS.org from Google Apps Scripts

lds.gs

function example() {
  // This cookie is good for many subsequent requests (until it expires)
  var cookie = getCookie('[username]', '[password]');
  
  var response = ldsGet(cookie, 'https://www.lds.org/mobiledirectory/services/v2/ldstools/current-user-detail');
  Logger.log(response.getContentText());
}

function getCookie(username, password) {
  var response = UrlFetchApp.fetch('https://signin.lds.org/login.html', {
    method: 'post',
    payload: {username: username, password: password},
    followRedirects: false,
  });

  var cookieHeader = response.getAllHeaders()['Set-Cookie'][0];
  var cookie = decodeURIComponent(cookieHeader.match(/ObSSOCookie=([^;]+)/)[1]);

  return cookie;
}

function ldsGet(cookie, url) {
  return UrlFetchApp.fetch(url, {
    headers: {
      'Cookie': 'ObSSOCookie=' + encodeURIComponent(cookie),
    },
  });
}

Thanks this helped me out quite a bit. I'm pulling in the member list into a spreadsheet.