Factory.php

Go to the documentation of this file.

<?php

declare(strict_types=1);

namespace ILIAS\ResourceStorage\Flavour\Engine;

use ILIAS\ResourceStorage\Flavour\Machine\FlavourMachine;

class Factory
{
    private array $engines_strings = [];
    private array $engines = [];

    public function __construct(array $additional_engines = [])
    {
        $this->engines_strings = array_merge($additional_engines, [
            ImagickEngine::class,
            GDEngine::class,
            FFMpegEngine::class,
            ImagickEngineWithOptionalFFMpeg::class,
            NoEngine::class
        ]);
    }

    public function get(FlavourMachine $machine): ?Engine
    {
        $depends_on = $machine->dependsOnEngine();
        if (!in_array($depends_on, $this->engines_strings, true)) {
            return null;
        }
        if (isset($this->engines[$depends_on])) {
            return $this->engines[$depends_on];
        }

        try {
            $engine = $this->engines[$depends_on] = new $depends_on();
        } catch (\Throwable) {
            return null;
        }
        return $engine;
    }
}