Prevent notifications from being sent when the user signs a document he asked to himself

src/Bundle/ChillMainBundle/Workflow/EventSubscriber/NotificationOnTransition.php

@@ -103,7 +103,10 @@ class NotificationOnTransition implements EventSubscriberInterface
 
         foreach ($dests as $subscriber) {
             if (
+                // prevent to send a notification to the one who created the step
                 $this->security->getUser() === $subscriber
+                // prevent to send a notification if the user applyied a signature on the previous step
+                || $this->isStepCreatedByPreviousSignature($entityWorkflow, $subscriber)
             ) {
                 continue;
             }
@@ -131,4 +134,31 @@ class NotificationOnTransition implements EventSubscriberInterface
             $this->entityManager->persist($notification);
         }
     }
+
+    /**
+     * Checks if the current step in the workflow was created by a previous signature of the specified user.
+     *
+     * This method retrieves the current step of the workflow and its preceding step. It iterates through
+     * the signatures of the preceding step to verify if the provided user is the signer of any of those
+     * signatures. Returns true if the user matches any signer; otherwise, returns false.
+     *
+     * @param EntityWorkflow $entityWorkflow the workflow entity containing the current step and its details
+     * @param User           $user           the user to check against the signatures of the previous step in the workflow
+     *
+     * @return bool true if the specified user created the step via a previous signature, false otherwise
+     */
+    private function isStepCreatedByPreviousSignature(EntityWorkflow $entityWorkflow, User $user): bool
+    {
+        $step = $entityWorkflow->getCurrentStepChained();
+        $previous = $step->getPrevious();
+
+
+        foreach ($previous->getSignatures() as $signature) {
+            if ($signature->getSigner() === $user) {
+                return true;
+            }
+        }
+
+        return false;
+    }
 }