Services.php

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<?php

declare(strict_types=1);

namespace ILIAS\FileDelivery;

use ILIAS\FileDelivery\Delivery\StreamDelivery;
use ILIAS\FileDelivery\Token\DataSigner;
use ILIAS\Filesystem\Stream\FileStream;
use ILIAS\FileDelivery\Delivery\Disposition;
use ILIAS\FileDelivery\Delivery\LegacyDelivery;
use ILIAS\Data\URI;

class Services
{
    public const DELIVERY_ENDPOINT = '/deliver.php/';

    private ?string $base_uri = null;

    public function __construct(
        private StreamDelivery $delivery,
        private LegacyDelivery $legacy_delivery,
        private DataSigner $data_signer,
        private \ILIAS\HTTP\Services $http
    ) {
    }

    public function delivery(): StreamDelivery
    {
        return $this->delivery;
    }

    public function legacyDelivery(): LegacyDelivery
    {
        return $this->legacy_delivery;
    }

    public function buildTokenURL(
        FileStream $stream,
        string $filename,
        Disposition $disposition,
        int $user_id,
        int $valid_for_at_least_hours
    ): URI {
        // a new DateTimeImmutable which is set to the end of now + $valid_for_at_least_hours hours
        $valid_for_at_least_hours++;
        $until = new \DateTimeImmutable(
            (new \DateTimeImmutable("now +$valid_for_at_least_hours hours"))->format('Y-m-d H:00')
        );

        $token = $this->data_signer->getSignedStreamToken(
            $stream,
            $filename,
            $disposition,
            $user_id,
            $until
        );
        return new URI(
            $this->getBaseURI() . self::DELIVERY_ENDPOINT . $token
        );
    }

    protected function getBaseURI(): string
    {
        return $this->base_uri ?? $this->base_uri = rtrim(
            $this->http->request()->getUri()->getScheme()
            . '://' . $this->http->request()->getUri()->getHost()
            . ($this->http->request()->getUri()->getPort() ? ':' . $this->http->request()->getUri()->getPort() : '')
            . dirname($this->http->request()->getUri()->getPath()),
            "/"
        );
    }
}