notificaiton: improve NotificationHandlerInterface + mark notification

as unread if a comment is appended

src/Bundle/ChillMainBundle/Entity/NotificationComment.php

@@ -15,11 +15,14 @@ use Chill\MainBundle\Doctrine\Model\TrackCreationInterface;
 use Chill\MainBundle\Doctrine\Model\TrackUpdateInterface;
 use DateTimeImmutable;
 use DateTimeInterface;
+use Doctrine\ORM\Event\LifecycleEventArgs;
+use Doctrine\ORM\Event\PreFlushEventArgs;
 use Doctrine\ORM\Mapping as ORM;
 
 /**
  * @ORM\Entity
  * @ORM\Table("chill_main_notification_comment")
+ * @ORM\HasLifecycleCallbacks
  */
 class NotificationComment implements TrackCreationInterface, TrackUpdateInterface
 {
@@ -52,6 +55,13 @@ class NotificationComment implements TrackCreationInterface, TrackUpdateInterfac
      */
     private ?Notification $notification = null;
 
+    /**
+     * Internal variable which detect if the comment is just persisted.
+     *
+     * @internal
+     */
+    private bool $recentlyPersisted = false;
+
     /**
      * @ORM\Column(type="datetime_immutable", nullable=true)
      */
@@ -98,6 +108,32 @@ class NotificationComment implements TrackCreationInterface, TrackUpdateInterfac
         return $this->updatedBy;
     }
 
+    /**
+     * @ORM\PreFlush
+     */
+    public function onFlushMarkNotificationAsUnread(PreFlushEventArgs $eventArgs): void
+    {
+        if ($this->recentlyPersisted) {
+            foreach ($this->getNotification()->getAddressees() as $addressee) {
+                if ($this->getCreatedBy() !== $addressee) {
+                    $this->getNotification()->markAsUnreadBy($addressee);
+                }
+            }
+
+            if ($this->getNotification()->getSender() !== $this->getCreatedBy()) {
+                $this->getNotification()->markAsUnreadBy($this->getNotification()->getSender());
+            }
+        }
+    }
+
+    /**
+     * @ORM\PrePersist
+     */
+    public function onPrePersist(LifecycleEventArgs $eventArgs): void
+    {
+        $this->recentlyPersisted = true;
+    }
+
     public function setContent(string $content): self
     {
         $this->content = $content;