SerializerFactory.php

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<?php namespace ILIAS\GlobalScreen\Identification\Serializer;

class SerializerFactory
{

    private static $core_instance;
    private static $plugin_instance;


    public function core() : SerializerInterface
    {
        if (!isset(self::$core_instance)) {
            self::$core_instance = new CoreSerializer();
        }

        return self::$core_instance;
    }


    public function plugin() : SerializerInterface
    {
        if (!isset(self::$plugin_instance)) {
            self::$plugin_instance = new PluginSerializer();
        }

        return self::$plugin_instance;
    }


    public function fromSerializedIdentification(string $serialized_identification) : SerializerInterface
    {
        $plugin = $this->plugin();
        if ($plugin->canHandle($serialized_identification)) {
            return $plugin;
        }

        $core = $this->core();
        if ($core->canHandle($serialized_identification)) {
            return $core;
        }

        throw new \InvalidArgumentException("Nobody can handle serialized identification '$serialized_identification'.");
    }
}