notification: add show action

src/Bundle/ChillMainBundle/Security/Authorization/NotificationVoter.php

@@ -0,0 +1,51 @@
+<?php
+
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Chill\MainBundle\Security\Authorization;
+
+use Chill\MainBundle\Entity\Notification;
+use Chill\MainBundle\Entity\User;
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Authorization\Voter\Voter;
+use UnexpectedValueException;
+
+final class NotificationVoter extends Voter
+{
+    public const SEE = 'chill_main_notification_see';
+
+    public const UPDATE = 'chill_main_notification_update';
+
+    protected function supports($attribute, $subject): bool
+    {
+        return $subject instanceof Notification;
+    }
+
+    /**
+     * @param string $attribute
+     * @param Notification $subject
+     */
+    protected function voteOnAttribute($attribute, $subject, TokenInterface $token): bool
+    {
+        $user = $token->getUser();
+
+        if (!$user instanceof User) {
+            return false;
+        }
+
+        switch ($attribute) {
+            case self::SEE:
+                return $subject->getSender() === $user || $subject->getAddressees()->contains($user);
+
+            default:
+                throw new UnexpectedValueException("this subject {$subject} is not implemented");
+        }
+    }
+}