Added declare strict types to all files

src/Services/UserSystem/PasswordResetManager.php

@@ -63,7 +63,7 @@ class PasswordResetManager
         $expiration_date->add(date_interval_create_from_date_string('1 day'));
         $user->setPwResetExpires($expiration_date);
 
-        if (!empty($user->getEmail())) {
+        if ($user->getEmail() !== null && $user->getEmail() !== '') {
             $address = new Address($user->getEmail(), $user->getFullName());
             $mail = new TemplatedEmail();
             $mail->to($address);

src/Services/UserSystem/PermissionPresetsHelper.php

@@ -1,4 +1,7 @@
 <?php
+
+declare(strict_types=1);
+
 /*
  * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
  *
@@ -17,7 +20,6 @@
  *  You should have received a copy of the GNU Affero General Public License
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-
 namespace App\Services\UserSystem;
 
 use App\Entity\UserSystem\PermissionData;
@@ -181,4 +183,4 @@ class PermissionPresetsHelper
         $this->permissionResolver->setAllPermissions($perm_holder, PermissionData::ALLOW);
         return $perm_holder;
     }
-}
+}

src/Services/UserSystem/PermissionSchemaUpdater.php

@@ -1,4 +1,7 @@
 <?php
+
+declare(strict_types=1);
+
 /*
  * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
  *
@@ -17,7 +20,6 @@
  *  You should have received a copy of the GNU Affero General Public License
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-
 namespace App\Services\UserSystem;
 
 use App\Entity\UserSystem\Group;
@@ -138,4 +140,4 @@ class PermissionSchemaUpdater
             $holder->getPermissions()->removePermission('devices');
         }
     }
-}
+}

src/Services/UserSystem/TFA/BackupCodeManager.php

@@ -40,7 +40,7 @@ class BackupCodeManager
      */
     public function enableBackupCodes(User $user): void
     {
-        if (empty($user->getBackupCodes())) {
+        if ($user->getBackupCodes() === []) {
             $this->regenerateBackupCodes($user);
         }
     }

src/Services/UserSystem/UserAvatarHelper.php

@@ -1,4 +1,7 @@
 <?php
+
+declare(strict_types=1);
+
 /*
  * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
  *
@@ -17,7 +20,6 @@
  *  You should have received a copy of the GNU Affero General Public License
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-
 namespace App\Services\UserSystem;
 
 use Imagine\Exception\RuntimeException;
@@ -115,7 +117,7 @@ class UserAvatarHelper
     private function getGravatar(User $user, int $s = 80, string $d = 'identicon', string $r = 'g'): string
     {
         $email = $user->getEmail();
-        if (empty($email)) {
+        if ($email === null || $email === '') {
             $email = 'Part-DB';
         }
 
@@ -161,4 +163,4 @@ class UserAvatarHelper
 
         return $attachment;
     }
-}
+}