Website Monitor with Google Scripts Easy Guide!

Use Google Apps Script to monitors website domains and send SMS text alerts when any of these sites are down or inaccessible. Thus, enabling you in Website Monitor with Google Scripts.

Code for Website Monitor with Google Scripts:

function init() {
  if (ScriptApp.getScriptTriggers().length == 0) {
    // Set up a monitor that triggers every 5 minutes
    ScriptApp.newTrigger('websiteMonitor').timeBased().everyMinutes(5).create();
  }
}

function websiteMonitor() {
  var response, error, code, urls;

  // The script can monitor multiple website URLs (comma separated)
  urls = SpreadsheetApp.getActiveSheet().getRange('B2').getValue();
  urls = urls.replace(/\s/g, '').split(',');

  for (var i = 0; i < urls.length; i++) {
    var url = urls[i];

    if (!ScriptProperties.getProperty(url)) {
      ScriptProperties.setProperty(url, 200);
    }

    // Trying to connect to the website URL
    try {
      response = UrlFetchApp.fetch(url);
    } catch (error) {
      // If URLFetchApp fails, the site is probably down
      updateLog(url, -1);
      continue;
    }

    code = response.getResponseCode();
    updateLog(url, code);
  }
}

function updateLog(url, code) {
  if (ScriptProperties.getProperty(url) == code) return;

  ScriptProperties.setProperty(url, code);

  var sheet = SpreadsheetApp.getActiveSheet();

  var row = sheet.getLastRow() + 1;
  var time = new Date();
  var msg = 'Down';

  if (code == 200) msg = 'Up';

  msg = 'Website is ' + msg + '  ' + url;

  sheet.getRange(row, 1).setValue(time);
  sheet.getRange(row, 2).setValue(msg);

  // Send an email notification when the site status changes
  var email = sheet.getRange('B3').getValue();
  MailApp.sendEmail(email, msg, url);

  var now = new Date(time.getTime() + 10000);

  // Create an event in Google Calendar with an SMS reminder
  if (sheet.getRange('B4').getValue().toLowerCase() == 'yes') CalendarApp.createEvent(msg, now, now).addSmsReminder(0);
}

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