Website Health check with google Sheet

Code.gs

var spreadSheet = SpreadsheetApp.openById('####')
/**
 * Helper Section
 */
function ping(url) {
  try {
    return UrlFetchApp.fetch(url).getResponseCode();
  } catch (err) {
    return 500;
  }
}

function log(url, resCode) {
  var timestamp = new Date().toLocaleString();
  var logSheet = spreadSheet.getSheetByName('Log');
  for (let i = 1; i < 1000000000000; i++) {
    if (logSheet.getRange('A' + i).getValue() == "") {
      logSheet.getRange('A' + i).setValue(timestamp);
      logSheet.getRange('B' + i).setValue(url);
      logSheet.getRange('C' + i).setValue(resCode);
      return;
    }
  }
}

function report(url, resCode) {
  var discordUrl = '####';
  var payload = JSON.stringify({
    content: `URL: ${url} \nStatus Code: ${resCode} \nOn : ${new Date().toLocaleString()}`
  });
  var params = {
    headers: { 'Content-Type': 'application/json' },
    method: "POST",
    payload: payload,
    muteHttpExceptions: true
  };

  UrlFetchApp.fetch(discordUrl, params);
}

/**
 * Main Thread
 */
function main() {
  for (let i = 2; i < 5; i++) {
    var urlSheet = spreadSheet.getSheetByName('Url');
    var url = urlSheet.getRange('A' + i).getValue();
    var resCode = ping(url);
    log(url, resCode);
    if (resCode >= 400) {
      report(url, resCode);
    }
  }
}