RelationProvider.php

См. документацию.

<?php
 
namespace Bitrix\Calendar\Relation;
 
use Bitrix\Calendar\Core\Event\Event;
use Bitrix\Calendar\Core\Mappers;
use Bitrix\Calendar\Relation\Exception\RelationException;
use Bitrix\Calendar\Relation\Result\RelationResult;
use Bitrix\Calendar\Relation\Strategy;
use Bitrix\Main\Error;
 
class RelationProvider
{
    public function getEventRelation(int $userId, int $eventId): RelationResult
    {
        $result = new RelationResult();

        $event = (new Mappers\Event())->getById($eventId);
        if (!$event)
        {
            $result->addError(new Error('Event not found'));
 
            return $result;
        }
 
        $strategy = Strategy\Factory::getInstance()->getStrategy($userId, $event);
 
        try
        {
            $result->setRelation($strategy->getRelation());
        }
        catch (RelationException $exception)
        {
            $result->addError(Error::createFromThrowable($exception));
        }
 
        return $result;
    }
}