StaticUrlHandler.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Exercise\PermanentLink;
 
use ILIAS\StaticURL\Response\Response;
use ILIAS\StaticURL\Response\Factory;
use ILIAS\StaticURL\Handler\BaseHandler;
use ILIAS\StaticURL\Handler\Handler;
use ILIAS\StaticURL\Request\Request;
use ILIAS\StaticURL\Context;
 
class StaticURLHandler extends BaseHandler implements Handler
{
    public function getNamespace(): string
    {
        return 'exc';
    }
 
    public function handle(Request $request, Context $context, Factory $response_factory): Response
    {
        global $DIC;
        $main_tpl = $DIC->ui()->mainTemplate();
        $lng = $DIC->language();
        $uri = null;
 
        $ref_id = $request->getReferenceId()?->toInt() ?? 0;
        $additional_params = $request->getAdditionalParameters() ?? [];
        $last = "";
        if (count($additional_params) > 0) {
            $last = (string) $additional_params[count($additional_params) - 1];
        }
        $ass_id = (int) ($additional_params[0] ?? 0);
        $action = null;
        $member = null;
 
        if (!$context->exists($ref_id) || ($ass_id > 0
            && \ilExAssignment::lookupExerciseId($ass_id) !== \ilObject::_lookupObjectId($ref_id))) {
            return $response_factory->cannot();
        }
 
        switch ($last) {
            case "download":
            case "setdownload":
                $action = $additional_params[2] ?? "";
                $member = $additional_params[1];
                break;
 
            case "given":
                $action = $additional_params[2] ?? "";
                $peer_id = (int) ($additional_params[1] ?? 0);
                break;
 
            case "grades":
            case "received":
                $action = $additional_params[1] ?? "";
                break;
        }
 
        $ctrl = $context->ctrl();
 
        $ctrl->setParameterByClass(\ilExerciseHandlerGUI::class, "ref_id", $ref_id);
 
        if ($context->checkPermission("read", $ref_id)) {
 
            if ($ass_id > 0) {
                $ctrl->setParameterByClass(\ilExerciseManagementGUI::class, "ass_id", $ass_id);
            }
 
            switch ($action) {
                case "grades":
                    $uri = $ctrl->getLinkTargetByClass(
                        [\ilExerciseHandlerGUI::class, \ilObjExerciseGUI::class, \ilExerciseManagementGUI::class],
                        "members"
                    );
                    break;
 
                case "setdownload":
                    $ctrl->setParameterByClass(\ilExerciseHandlerGUI::class, "member_id", $member);
                    $uri = $ctrl->getLinkTargetByClass(
                        array(\ilExerciseHandlerGUI::class, \ilObjExerciseGUI::class, \ilExerciseManagementGUI::class),
                        "waitingDownload"
                    );
                    break;
 
                case "given":
                    $ctrl->setParameterByClass(\ilObjExerciseGUI::class, "ass_id", $ass_id);
                    $ctrl->setParameterByClass(\ilObjExerciseGUI::class, "peer_id", $peer_id);
                    $uri = $ctrl->getLinkTargetByClass(
                        array(\ilExerciseHandlerGUI::class, \ilObjExerciseGUI::class, \ilAssignmentPresentationGUI::class,
                              \ilExSubmissionGUI::class, \ilExPeerReviewGUI::class),
                        "editPeerReviewItem"
                    );
                    break;
 
                case "received":
                    $ctrl->setParameterByClass(\ilObjExerciseGUI::class, "ass_id", $ass_id);
                    $uri = $ctrl->getLinkTargetByClass(
                        array(\ilExerciseHandlerGUI::class, \ilObjExerciseGUI::class, \ilAssignmentPresentationGUI::class,
                              \ilExSubmissionGUI::class, \ilExPeerReviewGUI::class),
                        "showReceivedPeerReview"
                    );
                    break;
 
                default:
                    if ($ass_id > 0) {
                        $ctrl->setParameterByClass(\ilObjExerciseGUI::class, "ass_id", $ass_id);
                        $uri = $ctrl->getLinkTargetByClass(
                            [\ilExerciseHandlerGUI::class, \ilObjExerciseGUI::class, \ilAssignmentPresentationGUI::class],
                            ""
                        );
                    } else {
                        $uri = $ctrl->getLinkTargetByClass(
                            [\ilExerciseHandlerGUI::class, \ilObjExerciseGUI::class],
                            "showOverview"
                        );
                    }
                    break;
 
            }
        } elseif ($context->checkPermission("visible", $ref_id)) {
            $uri = $ctrl->getLinkTargetByClass(
                [\ilExerciseHandlerGUI::class, \ilObjExerciseGUI::class],
                "infoScreen"
            );
        }
        if (is_null($uri)) {
            if (!$context->isUserLoggedIn()) {
                return $response_factory->loginFirst();
            }
            return $response_factory->cannotReach();
        }
        return $response_factory->can($uri);
    }
 
}