Google Ads Scripts Label-Manager

function main() {
  // ## load the LabelManager or add the code manually
  var url = "http://tools.internet-marketing-inside.de/adwords-scripts-label-manager.js";
  eval(UrlFetchApp.fetch(url).getContentText());
 
  // ## LabelManager caches all labels in the account to work efficient.
  // ## => Don't use label.remove() or AdWordsApp.createLabel() when using the LabelManager.
  // ## - Instead of label.remove() use LabelManager.removeFromAccount(label.getName());
  // ## - Instead of AdWordsApp.createLabel("label name") use LabelManager.create("label name")
  // ##
  // ## Examples
  var campaignIterator = AdWordsApp.campaigns().get();
  if (campaignIterator.hasNext() === true) {
    var campain1 = campaignIterator.next();
    
    // ## add 2 labels to the campaign1. They are created automatically if necessary!
    LabelManager.apply("LabelManager first", campain1, true);
    LabelManager.apply("LabelManager second", campain1, true);
 
    // ## add label "LabelManager first" again with _bCheckIfAlreadyExists = true
    // ##   => no error in log because LabelManager checks if the element has got this label already
    LabelManager.apply("LabelManager first", campain1, true);
 
    // ## try to remove "LabelManager dummy" again with _bCheckIfAlreadyExists = true
    // ##   => no error in change list because LabelManager checks if the element has got this label already
    LabelManager.remove("LabelManager dummy", campain1, true);
 
    // ## add label "LabelManager third" and remove label "LabelManager first"
    LabelManager.applyOrRemove({"LabelManager third":true, "LabelManager first":false}, campain1, true);
 
    
    // ## some statistics (only correct if _bCheckIfAlreadyExists was always set true
    Logger.log("label applied: "+JSON.stringify(LabelManager.getLabelAppliedPerLabel()));
    Logger.log("label removed: "+JSON.stringify(LabelManager.getLabelRemovedPerLabel()));
    Logger.log("label applied total: "+LabelManager.getLabelAppliedTotal()+
               " (requested applies: "+LabelManager.getLabelApplyRequested()+")");
    Logger.log("label removed total: "+LabelManager.getLabelRemovedTotal()+
               " (requested removes: "+LabelManager.getLabelRemoveRequested()+")");
    // ## Output:
    // ## label applied: {"LabelManager first":1,"LabelManager second":1,"LabelManager third":1}
    // ## label removed: {"LabelManager first":1}
    // ## label applied total: 3 (requested applies: 4)
    // ## label removed total: 1 (requested removes: 1)
 
    // ## add label "LabelManager second" now with _bCheckIfAlreadyExists = false
    // ##   => error in log because LabelManager does NOT check if the element has got this label already
    // ## Set _bCheckIfAlreadyExists = false only if performance is critical
    LabelManager.apply("LabelManager second", campain1, false);
 
    // ## get a label object
    LabelManager.getOrCreate("LabelManager second").setDescription("just a test");
    
    // ## remove all created labels from account again
    LabelManager.removeFromAccount("LabelManager first", "LabelManager second", "LabelManager third");
  }
}

function main() {
  // ## load the LabelManager this way to get updates automatically
  var url = "http://tools.internet-marketing-inside.de/adwords-scripts-label-manager.js";
  eval(UrlFetchApp.fetch(url).getContentText());