class.ilObjectRequestRetriever.php

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<?php

declare(strict_types=1);

use ILIAS\HTTP\Wrapper\WrapperFactory;
use ILIAS\Refinery\Factory;
use ILIAS\Refinery\Transformation;

class ilObjectRequestRetriever
{
    protected WrapperFactory $wrapper;
    protected Factory $refinery;

    public function __construct(WrapperFactory $wrapper, Factory $refinery)
    {
        $this->wrapper = $wrapper;
        $this->refinery = $refinery;
    }

    private function getFromRequest(string $key, Transformation $t)
    {
        if ($this->wrapper->query()->has($key)) {
            return $this->wrapper->query()->retrieve($key, $t);
        }
        if ($this->wrapper->post()->has($key)) {
            return $this->wrapper->post()->retrieve($key, $t);
        }
        return null;
    }

    public function has(string $key): bool
    {
        return $this->wrapper->query()->has($key)
            || $this->wrapper->post()->has($key);
    }

    public function getMaybeInt(string $key, ?int $fallback = null): ?int
    {
        return $this->getFromRequest($key, $this->refinery->kindlyTo()->int()) ?? $fallback;
    }

    public function getMaybeString(string $key, ?string $fallback = null): ?string
    {
        return $this->getFromRequest($key, $this->refinery->kindlyTo()->string()) ?? $fallback;
    }

    public function getBool(string $key): bool
    {
        return $this->getFromRequest($key, $this->refinery->kindlyTo()->bool()) ?? false;
    }
}