How to prevent the addition of items no more than three per day?

Question

1C-Bitrix

I have a feedback functionality, reviews on the site are added to the info block. How can I make it so that one user cannot add reviews, no more than three per day.

function getCountTodayMessages(){
  $today=date("Y.m.d H:i:s");
  $arFilter = array('IBLOCK_ID' => 5,"=TIMESTAMP_X" => $today);
  $arSort = array ('TIMESTAMP_X' => 'DESC');
  $items = CIBlockElement::GetList($arSort,$arFilter);
  while ($obItem = $items->GetNextElement()){
     $arItem = $obItem->GetFields();
     print_r( $arItem["NAME"]."sdfsdf");
     }
     
}

Answer 1

Use the OnBeforeIBlockElementAdd
event. Make a request to the feedback infoblock with the current date and user parameters. Count the reviews. If the number of reviews == 3, the OnBeforeIBlockElementAdd event must return false. Then the element will not be added.
If you add reviews from a self-written script via ajax, then check for the number of reviews in this script.