Labels (and optionally pauses) campaigns that are overspending too much, and emails you a warning.

Campaign Budget Overspend Monitoring

/**
*
* Campaign Budget Overspend Monitoring
*
* This script labels campaigns whose spend today is more than their daily
* budgets. Optionally, it also pauses campaigns whose spend exceeds the
* budget by too much. An email is then sent, listing the newly labelled
* and paused campaigns.
* When spend no longer exceeds budget, the campaigns are reactivated and
* labels are removed.
*
* Version: 1.0
* Google AdWords Script maintained on brainlabsdigital.com
*
**/

//////////////////////////////////////////////////////////////////////////////
// Options

var campaignNameContains = [];
// Use this if you only want to look at some campaigns.
// For example ["Generic"] would only look at campaigns with 'generic' in the name,
// while ["Generic", "Competitor"] would only look at campaigns with either
// 'generic' or 'competitor' in the name.
// Leave as [] to include all campaigns.

var campaignNameDoesNotContain = [];
// Use this if you want to exclude some campaigns.
// For example ["Brand"] would ignore any campaigns with 'brand' in the name,
// while ["Brand", "Key Terms"] would ignore any campaigns with 'brand' or
// 'key terms' in the name.
// Leave as [] to not exclude any campaigns.

var email = ["[email protected]"];
// The email address you want the hourly update to be sent to.
// If you'd like to send to multiple addresses then have them separated by commas,
// for example ["[email protected]", "[email protected]"]

var currencySymbol = "£";
// Used for formatting in the email.

var thousandsSeparator = ",";
// Numbers will be formatted with this as the thousands separator.
// eg If this is ",", 1000 will appear in the email as 1,000
// If this is ".", 1000 will appear in the email as 1.000
// If this is "" 1000 will appear as 1000.

var decimalMark = ".";
// Numbers will be formatted with this as the decimal mark
// eg if this is ".", one and a half will appear in the email as 1.5
// and if this is "," it will be 1,5

var labelThreshold = 1.0;
// This is multiplied by the campaign's daily budget to create a threshold.
// If the campaign spend is higher than the threshold, it will be labelled
// (and you will be emailed).
// For example if labelThreshold = 1.0 then campaigns are labelled when
// their spend is greater than or equal to their budget.

var labelName = "Over Budget";
// The name of the label you want to apply to campaigns that have gone
// over budget.

var campaignPauser = false;
// Set this to true to pause campaigns if spend exceeds the pauseThreshold.
// Set to false if campaigns are to be kept enabled.

var pauseThreshold = 1.2;
// This is multiplied by the campaign's daily budget to create a threshold.
// If campaignPauser is true and the campaign spend is higher than this threshold,
// it will be paused (and you will be emailed).
// For example if pauseThreshold = 1.2 then campaigns are paused when
// their spend is greater than or equal to 120% of their budget.
// pauseThreshold MUST be greater than or equal to the labelThreshold, so that all
// campaigns that the script pauses are also labelled.


//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
// Functions

function main() {
  checkInputs();
  
  //Get the campaign IDs (based on campaignNameDoesNotContain and campaignNameContains)
  var campaignData = getCampaignIds();
  
  var campaignsToAddLabel = [];
  var campaignsToRemoveLabel = [];
  var campaignsToPause = [];
  var campaignsToEnable = [];
  
  for (var campaignId in campaignData){
    var currentCampaign = campaignData[campaignId];
    
    var budget = currentCampaign.Budget;
    var status = currentCampaign.CampaignStatus;
    var spend = currentCampaign.Spend;
    var label = currentCampaign.Labels;   
    
    var pauseBudgetCap = pauseThreshold * budget;
    var labelBudgetCap = labelThreshold * budget;
    
    if (status == 'enabled' && label.indexOf('"' + labelName + '"') == -1){
      if(spend >= labelBudgetCap){
        campaignsToAddLabel.push(currentCampaign);
      }
    }
    if (status == 'enabled'){
      if (spend >= pauseBudgetCap){
        campaignsToPause.push(currentCampaign);
      }
    }   
    if (status == 'paused' && label.indexOf('"' + labelName + '"') != -1){
      if(spend <= pauseBudgetCap){
        campaignsToEnable.push(currentCampaign);
      }
    }     
    if (status == 'enabled' && label.indexOf('"' + labelName + '"') != -1){
      if(spend <= labelBudgetCap){
        campaignsToRemoveLabel.push(currentCampaign);
      }
    }
  }
  
  //Change and update campaigns
  if (campaignsToEnable.length > 0 && campaignPauser === true){
    Logger.log(campaignsToEnable.length + " campaigns to enable");
    enableCampaigns(campaignsToEnable);  
  }
  if (campaignsToRemoveLabel.length > 0){
    Logger.log(campaignsToRemoveLabel.length + " campaigns to unlabel");
    removeLabel(campaignsToRemoveLabel);  
  }
  if (campaignsToAddLabel.length > 0){
    Logger.log(campaignsToAddLabel.length + " campaigns to label");
    addLabel(campaignsToAddLabel);  
  }
  if (campaignsToPause.length > 0 && campaignPauser === true){
    Logger.log(campaignsToPause.length + " campaigns to pause");
    pauseCampaigns(campaignsToPause);  
  }
  
  // Send an email, if actions were taken
  sendSummaryEmail(campaignsToAddLabel, campaignsToPause, campaignPauser, email);
}


// Check the inputs
function checkInputs() {
  if (!isValidNumber(labelThreshold)) {
    throw "labelThreshold '" + labelThreshold + "' is not a valid, positive number.";
  }
  if (labelThreshold > 2) {
    Logger.log("Warning: labelThreshold '" + labelThreshold + "' is greater than 2. As AdWords does not spend more than twice the budget, this threshold will not be reached.");
  }
  if (campaignPauser) {
    if (!isValidNumber(pauseThreshold)) {
      throw "pauseThreshold '" + pauseThreshold + "' is not a valid, positive number.";
    }
    if (pauseThreshold < labelThreshold) {
      throw "pauseThreshold '" + pauseThreshold + "' is less than labelThreshold '" + labelThreshold + "'. It should be greater than or equal to labelThreshold.";
    }
    if (pauseThreshold > 2) {
      Logger.log("Warning: pauseThreshold '" + pauseThreshold + "' is greater than 2. As AdWords does not spend more than twice the budget, this threshold will not be reached.");
    }
  }
  
}


// Checks the input is a number that's finite and greater than zero
function isValidNumber(number) {
  var isANumber = !isNaN(number) && isFinite(number);
  var isPositive = number > 0;
  return isANumber && isPositive;
}


// Get the IDs of campaigns which match the given options
function getCampaignIds() {
  var whereStatement = "WHERE CampaignStatus IN ['ENABLED','PAUSED'] ";
  var whereStatementsArray = [];
  var campData = {};
  
  for (var i=0; i<campaignNameDoesNotContain.length; i++) {
    whereStatement += "AND CampaignName DOES_NOT_CONTAIN_IGNORE_CASE '" + campaignNameDoesNotContain[i].replace(/"/g,'\\\"') + "' ";
  }
  
  if (campaignNameContains.length == 0) {
    whereStatementsArray = [whereStatement];
  } else {
    for (var i=0; i<campaignNameContains.length; i++) {
      whereStatementsArray.push(whereStatement + 'AND CampaignName CONTAINS_IGNORE_CASE "' + campaignNameContains[i].replace(/"/g,'\\\"') + '" ');
    }
  }
  
  for (var i=0; i<whereStatementsArray.length; i++) {
    var report = AdWordsApp.report(
      "SELECT CampaignId, CampaignName, CampaignStatus, Amount, Labels, LabelIds, Cost " +
      "FROM   CAMPAIGN_PERFORMANCE_REPORT " +
      whereStatementsArray[i] +
      "AND AdvertisingChannelType IN ['SEARCH', 'DISPLAY'] " +
      "DURING TODAY");
    
    var rows = report.rows();
    while (rows.hasNext()) {
      var row = rows.next();
      var budget = parseFloat(row['Amount'].replace(/,/g, ""));
      var spend = parseFloat(row['Cost'].replace(/,/g, ""));
      var campaignId = row['CampaignId'];
      
      campData[campaignId] = 
        {CampaignId : campaignId,
         CampaignName : row['CampaignName'],
         CampaignStatus : row['CampaignStatus'],
         Spend : spend,
         Budget : budget,
         Labels : row['Labels'],
         LabelId : row['LabelIds']
        };
    }
  }
  
  var campaignIds = Object.keys(campData);
  if (campaignIds.length == 0) {
    throw("No campaigns found with the given settings.");
  }
  Logger.log(campaignIds.length + " campaigns found");
  
  return campData;
}


// Create the label if it doesn't exist, and return its ID.
// (Returns a dummy ID if the label does not exist and this is a preview run,
// because we can't create or apply the label)
function getOrCreateLabelId(labelName) {
  var labels = AdWordsApp.labels().withCondition("Name = '" + labelName + "'").get();
  
  if (!labels.hasNext()) {
    AdWordsApp.createLabel(labelName);
    labels = AdWordsApp.labels().withCondition("Name = '" + labelName + "'").get();
  }
  
  if (AdWordsApp.getExecutionInfo().isPreview() && !labels.hasNext()) {
    var labelId = 0;
  } else {
    var labelId = labels.next().getId();
  }
  return labelId;
}


//Pause Campaigns
function pauseCampaigns(campaignData) {
  for(j=0; j <campaignData.length; j++){
    var campaignIterator = AdWordsApp.campaigns()
    .withCondition('CampaignId = '+ campaignData[j].CampaignId)
    .get();
    if (campaignIterator.hasNext()) {
      var campaign = campaignIterator.next();
      campaign.pause();
      campaignData[j].CampaignStatus = 'paused';
    }
  }
}


//Enable Campaigns that were paused
function enableCampaigns(campaignData) {
  for(j=0; j <campaignData.length; j++){
    var campaignIterator = AdWordsApp.campaigns()
    .withCondition('CampaignId = '+ campaignData[j].CampaignId)
    .get();
    if (campaignIterator.hasNext()) {
      var campaign = campaignIterator.next();
      campaign.enable();
      campaignData[j].CampaignStatus = 'enabled';
    }
  }
}


//Add Labels to campaigns
function addLabel(campaignData){
  for(j=0; j <campaignData.length; j++){
    var campaign = AdWordsApp.campaigns()
    .withCondition('CampaignId = '+ campaignData[j].CampaignId).get().next();
    getOrCreateLabelId(labelName);
    campaign.applyLabel(labelName);
  }
}


//Remove Labels from campaigns 
function removeLabel(campaignData){
  for(j=0; j <campaignData.length; j++){
    var campaign = AdWordsApp.campaigns()
    .withCondition('CampaignId = '+ campaignData[j].CampaignId).get().next();
    campaign.removeLabel(labelName);
  }
}


// Combines information on labelled and paused campaigns and emails this
function sendSummaryEmail(campaignsToAddLabel, campaignsToPause, campaignPauser, email) {
  var localDate = Utilities.formatDate(new Date(), AdWordsApp.currentAccount().getTimeZone(), "yyyy-MM-dd");
  var localTime = Utilities.formatDate(new Date(), AdWordsApp.currentAccount().getTimeZone(), "HH:mm");
  
  // Assemble the email message
  var subject = AdWordsApp.currentAccount().getName() + " - Budget Overspend Email";
  var message = "";
  message += makeChangeMessage(campaignsToAddLabel, 'labelled');
  if (campaignPauser) {
    message += makeChangeMessage(campaignsToPause, 'paused');
  }
  if (message == "") {
    Logger.log("No message to send.");
    return; 
  }
  message = localDate +" at " + localTime +" :" + message;
  MailApp.sendEmail({
    to: email.join(','), 
    subject: subject,
    htmlBody: message
  });
  Logger.log("Message to " + email.join(',') + " sent.");
}


// Turns campaign data into an HTML table
function makeChangeMessage(campaignData, changed) {
  if (campaignData.length == 0) {
    return ""; 
  }
  var message = "<br><br>Campaigns that have been " + changed + "<br><br>";
  var table = "<table border=1 style='border: 1px solid black; border-collapse: collapse;'>";
  table += "<tr><th>Campaign ID</th><th>Campaign Name</th><th>Status</th><th>Spend</th><th>Budget</th></tr>";
  for (var k=0; k<campaignData.length; k++){
    table += "<tr><td>"+campaignData[k].CampaignId+"</td><td>"+campaignData[k].CampaignName+"</td><td>"+
      campaignData[k].CampaignStatus+"</td><td>"+formatNumber(campaignData[k].Spend, true)+"</td><td>"+formatNumber(campaignData[k].Budget, true)+"</td>";
    table += "</tr>";
  }
  table += "</table>";
  message += table;
  return message;
}


// Formats a number with the specified thousand separator and decimal mark
// Adds the currency symbol and two decimal places if isCurrency is true
function formatNumber(number, isCurrency) {
  if (isCurrency) {
    var formattedNumber = number.toFixed(2);
    formattedNumber = formattedNumber.substr(0,formattedNumber.length-3);
    formattedNumber = formattedNumber.split('').reverse().join('').replace(/(...)/g,"$1 ").trim().split('').reverse().join('').replace(/ /g,thousandsSeparator);
    formattedNumber = currencySymbol + formattedNumber + decimalMark + number.toFixed(2).substr(-2);
  } else {
    var formattedNumber = number.toFixed(0).split('').reverse().join('').replace(/(...)/g,"$1 ").trim().split('').reverse().join('').replace(/ /g,thousandsSeparator); 
  }
  return formattedNumber;
}