CoreSerializer.php

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<?php

declare(strict_types=1);
namespace ILIAS\GlobalScreen\Identification\Serializer;

use ILIAS\GlobalScreen\Identification\CoreIdentificationProvider;
use ILIAS\GlobalScreen\Identification\IdentificationInterface;
use ILIAS\GlobalScreen\Identification\LostIdentification;
use ILIAS\GlobalScreen\Identification\Map\IdentificationMap;
use ILIAS\GlobalScreen\Provider\ProviderFactory;

class CoreSerializer implements SerializerInterface
{
    public const DIVIDER = '|';

    public function serialize(IdentificationInterface $identification): string
    {
        $divider = self::DIVIDER;

        $str = "{$identification->getClassName()}{$divider}{$identification->getInternalIdentifier()}";

        if (strlen($str) > SerializerInterface::MAX_LENGTH) {
            throw new \LogicException("Serialized Identifications MUST be shorter than " . SerializerInterface::MAX_LENGTH . " characters");
        }

        return $str;
    }

    public function unserialize(string $serialized_string, IdentificationMap $map, ProviderFactory $provider_factory): IdentificationInterface
    {
        list($class_name, $internal_identifier) = explode(self::DIVIDER, $serialized_string);

        if (!$provider_factory->isInstanceCreationPossible($class_name) || !$provider_factory->isRegistered($class_name)) {
            return new LostIdentification($serialized_string);
        }

        $f = new CoreIdentificationProvider($provider_factory->getProviderByClassName($class_name), $this, $map);

        return $f->identifier($internal_identifier);
    }

    public function canHandle(string $serialized_identification): bool
    {
        return preg_match('/(.*?)\|(.*)/m', $serialized_identification) > 0;
    }
}