FileStreamConsumer.php

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<?php

declare(strict_types=1);

namespace ILIAS\ResourceStorage\Consumer;

use ILIAS\Filesystem\Stream\FileStream;
use ILIAS\ResourceStorage\Consumer\StreamAccess\StreamAccess;
use ILIAS\ResourceStorage\Resource\StorableResource;

class FileStreamConsumer implements StreamConsumer
{
    use GetRevisionTrait;

    protected ?int $revision_number = null;
    private StorableResource $resource;
    private StreamAccess $stream_access;

    public function __construct(StorableResource $resource, StreamAccess $stream_access)
    {
        $this->resource = $resource;
        $this->stream_access = $stream_access;
    }

    public function getStream(): FileStream
    {
        $revision = $this->stream_access->populateRevision($this->getRevision());
        return $revision->maybeStreamResolver()?->getStream();
    }

    public function setRevisionNumber(int $revision_number): self
    {
        $this->revision_number = $revision_number;
        return $this;
    }
}