class.ilSecureTokenSrcBuilder.php

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<?php
declare(strict_types=1);

use ILIAS\ResourceStorage\Consumer\InlineSrcBuilder;
use ILIAS\ResourceStorage\Consumer\SrcBuilder;
use ILIAS\ResourceStorage\Flavour\Flavour;
use ILIAS\ResourceStorage\Revision\Revision;
use ILIAS\FileDelivery\Delivery\Disposition;
use ILIAS\FileDelivery\Services;

class ilSecureTokenSrcBuilder implements SrcBuilder
{
    private InlineSrcBuilder $inline;

    public function __construct(
        private Services $file_delivery,
    ) {
        $this->inline = new InlineSrcBuilder($file_delivery);
    }

    public function getRevisionURL(
        Revision $revision,
        bool $signed = true,
        float $valid_for_at_least_minutes = 60.0,
        string $filename = null
    ): string {
        // get stream from revision
        $stream = $revision->maybeStreamResolver()?->getStream();

        return (string) $this->file_delivery->buildTokenURL(
            $stream,
            $filename ?? $revision->getTitle(),
            Disposition::INLINE,
            $GLOBALS['ilUser']->getId() ?? 0,
            (int) (ceil($valid_for_at_least_minutes / 60))
        );
    }

    public function getFlavourURLs(Flavour $flavour, bool $signed = true): \Generator
    {
        foreach ($flavour->getStreamResolvers() as $stream_resolver) {
            $stream = $stream_resolver->getStream();
            if ($stream_resolver->isInMemory() || $stream->getMetadata()['uri'] === 'php://memory') {
                // must deliver as data uri
                yield $this->inline->buildDataURLFromStream($stream);
            } else {
                yield (string) $this->file_delivery->buildTokenURL(
                    $stream,
                    '',
                    Disposition::INLINE,
                    $GLOBALS['ilUser']->getId() ?? 0,
                    1
                );
            }
        }
    }

}