StaticUrlHandler.php

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<?php

declare(strict_types=1);

namespace ILIAS\Export\ExportHandler;

use ilDashboardGUI;
use ILIAS\Export\ExportHandler\Factory as ilExportHandler;
use ILIAS\StaticURL\Context;
use ILIAS\StaticURL\Request\Request;
use ILIAS\StaticURL\Response\Factory;
use ILIAS\StaticURL\Response\Response;

class StaticUrlHandler
{
    public const NAMESPACE = "export";
    public const DOWNLOAD = 'download';

    protected ilExportHandler $export_handler;


    public function __construct()
    {
        $this->export_handler = new ilExportHandler();
    }

    public function getNamespace(): string
    {
        return self::NAMESPACE;
    }

    public function handle(Request $request, Context $context, Factory $response_factory): Response
    {
        $ref_id = $request->getReferenceId();
        if (is_null($request->getReferenceId())) {
            return $response_factory->can($context->ctrl()->getLinkTargetByClass(ilDashboardGUI::class));
        }
        $operation = $request->getAdditionalParameters()[0] ?? "";
        $object_id = $ref_id->toObjectId();
        $access_granted = false;
        $pa_possible = false;
        $key = $this->export_handler->publicAccess()->repository()->key()->handler()->withObjectId($object_id);
        $element = $this->export_handler->publicAccess()->repository()->handler()->getElement($key);
        $export_option = is_null($element)
            ? null
            : $this->export_handler->consumer()->exportOption()->exportOptionWithId($element->getValues()->getExportOptionId());
        if ($context->isUserLoggedIn() and $context->checkPermission("read", $ref_id->toInt())) {
            $access_granted = true;
        }
        if (
            $context->getUserId() === ANONYMOUS_USER_ID and
            $context->isPublicSectionActive() and
            $context->checkPermission('read', $ref_id->toInt())
        ) {
            $access_granted = true;
        }
        if (
            is_null($element) or
            is_null($export_option) or
            !$export_option->isPublicAccessPossible() or
            !$access_granted or
            $operation !== self::DOWNLOAD
        ) {
            return $response_factory->can($context->ctrl()->getLinkTargetByClass(ilDashboardGUI::class));
        }
        $export_option->onDownloadWithLink(
            $ref_id,
            $this->export_handler->consumer()->file()->identifier()->handler()->withIdentifier($element->getValues()->getIdentification())
        );
        return $response_factory->cannot();
    }
}