do not allow to sign if the signature is already applyied

src/Bundle/ChillMainBundle/Controller/WorkflowAddSignatureController.php

@@ -12,12 +12,15 @@ declare(strict_types=1);
 namespace Chill\MainBundle\Controller;
 
 use Chill\DocStoreBundle\Service\Signature\PDFSignatureZoneAvailable;
+use Chill\MainBundle\Entity\Workflow\EntityWorkflowSignatureStateEnum;
 use Chill\MainBundle\Entity\Workflow\EntityWorkflowStepSignature;
 use Chill\MainBundle\Workflow\EntityWorkflowManager;
+use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Symfony\Component\Routing\Annotation\Route;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 use Twig\Environment;
 
@@ -28,6 +31,7 @@ final readonly class WorkflowAddSignatureController
         private PDFSignatureZoneAvailable $PDFSignatureZoneAvailable,
         private NormalizerInterface $normalizer,
         private Environment $twig,
+        private UrlGeneratorInterface $urlGenerator,
     ) {}
 
     #[Route(path: '/{_locale}/main/workflow/signature/{id}/sign', name: 'chill_main_workflow_signature_add', methods: 'GET')]
@@ -35,6 +39,16 @@ final readonly class WorkflowAddSignatureController
     {
         $entityWorkflow = $signature->getStep()->getEntityWorkflow();
 
+        if (EntityWorkflowSignatureStateEnum::PENDING !== $signature->getState()) {
+            if ($request->query->has('returnPath')) {
+                return new RedirectResponse($request->query->get('returnPath'));
+            }
+
+            return new RedirectResponse(
+                $this->urlGenerator->generate('chill_main_workflow_show', ['id' => $entityWorkflow->getId()])
+            );
+        }
+
         $storedObject = $this->entityWorkflowManager->getAssociatedStoredObject($entityWorkflow);
         if (null === $storedObject) {
             throw new NotFoundHttpException('No stored object found');