Replace separate minecraft access tokens with JWT

api/modules/authserver/validators/ClientTokenValidator.php

@@ -1,20 +1,23 @@
 <?php
+declare(strict_types=1);
+
 namespace api\modules\authserver\validators;
 
 use api\modules\authserver\exceptions\IllegalArgumentException;
+use yii\validators\Validator;
 
 /**
  * The maximum length of clientToken for our database is 255.
  * If the token is longer, we do not accept the passed token at all.
  */
-class ClientTokenValidator extends \yii\validators\RequiredValidator {
+class ClientTokenValidator extends Validator {
 
     /**
      * @param string $value
      * @return null
      * @throws \api\modules\authserver\exceptions\AuthserverException
      */
-    protected function validateValue($value) {
+    protected function validateValue($value): ?array {
         if (mb_strlen($value) > 255) {
             throw new IllegalArgumentException('clientToken is too long.');
         }