excludedateshandler.php

<?php
 
namespace Bitrix\Calendar\Sync\Util;
 
use Bitrix\Calendar\Core;
use Bitrix\Calendar\Core\Base\Map;
use Bitrix\Calendar\Core\Event\Event;
 
class ExcludeDatesHandler
{
    public function prepareEventExcludeDates(Event $event, ?Core\Base\Map $exceptionEvents)
    {
        if (
            $exceptionEvents === null
            || $exceptionEvents->count() === 0
            || !$event->getExcludedDateCollection()
            || $event->getExcludedDateCollection()->count() === 0
        )
        {
            return;
        }
        
        foreach ($event->getExcludedDateCollection() as $key => $date)
        {
            if ($exceptionEvents->has($date->format('Ymd')))
            {
                $event->getExcludedDateCollection()->remove($key);
            }
        }
    }
}