class.ilObjBibliographicUploadHandlerGUI.php

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<?php

declare(strict_types=1);

use ILIAS\FileUpload\Handler\BasicHandlerResult;
use ILIAS\FileUpload\DTO\UploadResult;
use ILIAS\FileUpload\Handler\HandlerResult;

class ilObjBibliographicUploadHandlerGUI extends ilCtrlAwareStorageUploadHandler
{
    public function __construct(private string $rid = "")
    {
        parent::__construct(new ilObjBibliographicStakeholder());
    }

    #[\Override]
    protected function getUploadResult(): HandlerResult
    {
        $this->upload->process();

        $result_array = $this->upload->getResults();
        $result = end($result_array);

        if ($result instanceof UploadResult && $result->isOK()) {
            $resource_identification = $this->storage->manage()->find($this->rid);
            if ($resource_identification !== null) {
                $identifier = $this->storage->manage()->replaceWithUpload(
                    $resource_identification,
                    $result,
                    $this->stakeholder
                )->getIdentification()->serialize();
            } else {
                $identifier = $this->storage->manage()->upload($result, $this->stakeholder)->serialize();
            }
            $status = HandlerResult::STATUS_OK;
            $message = "file upload OK";
        } else {
            $identifier = '';
            $status = HandlerResult::STATUS_FAILED;
            $message = $result->getStatus()->getMessage();
        }

        return new BasicHandlerResult(
            $this->getFileIdentifierParameterName(),
            $status,
            $identifier,
            $message
        );
    }
}