Source of file BlameableSubscriber.php

<?php

namespace TIC\DormBundle\EventSubscriber;

use Doctrine\ORM\Event\PrePersistEventArgs;

use Doctrine\ORM\Event\PreUpdateEventArgs;

use Doctrine\ORM\Events;

use Doctrine\Bundle\DoctrineBundle\EventSubscriber\EventSubscriberInterface;

use http\Exception\InvalidArgumentException;

use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;

use TIC\CoreBundle\Util\ClassHelper;

use TIC\DormBundle\Traits\EntityBlameable;

class BlameableSubscriber implements EventSubscriberInterface

{

    private $tokenStorage;

    public function __construct(TokenStorageInterface $tokenStorage)

    {

        $this->tokenStorage = $tokenStorage;

    }

    public function getSubscribedEvents(): array

    {

        return [

            Events::prePersist,

            Events::preUpdate,

        ];

    }

    public function prePersist(PrePersistEventArgs $args): void

    {

        $object = $args->getObject();

        if (!$this->isBlameable($object)) return;

        $user = $this->checkUser();

        if ($user && is_object($object)) {

            $object->setCreatedBy($user);

            $object->setUpdatedBy($user);

        }

    }

    public function preUpdate(PreUpdateEventArgs $args): void

    {

        $object = $args->getObject();

        if (!$this->isBlameable($object)) return;

        $user = $this->checkUser();

        if ($user && is_object($object)) {

            $object->setUpdatedBy($user);

        }

    }

    public function isBlameable($object): bool

    {

        return ClassHelper::hasTrait($object, EntityBlameable::class);

    }

    public function checkUser()

    {

        $user = $this->tokenStorage->getToken() ? $this->tokenStorage->getToken()->getUser() : null;

        if ($user === null) {

            $user = (PHP_SAPI === "cli") ? 'admin' : 'anonymous';

        }

        if (is_object($user)) {

            if (method_exists($user, 'getBlameableName')) {

                return $user->getBlameableName();

            }

            if (method_exists($user, '__toString')) {

                return $user->__toString();

            }

            throw new InvalidArgumentException('User must be a string, or object shoud have method __toString');

        }

        return $user;

    }

}