driver: detect array file param gracefully

Author: nerg4l

src/Driver/BaseHandler.php

@@ -9,6 +9,7 @@
 use Illuminate\Http\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;
 
 abstract class BaseHandler
 {
@@ -62,17 +63,21 @@ protected function triggerFileUploadedEvent($disk, $path, Closure $fileUploaded
     /**
      * Validate an uploaded file. An exception is thrown when it is invalid.
      *
-     * @param \Illuminate\Http\UploadedFile|null $file
+     * @param \Illuminate\Http\UploadedFile|array|null $file
      *
      * @throws \Symfony\Component\HttpKernel\Exception\BadRequestHttpException when given file is null.
      * @throws \CodingSocks\UploadHandler\Exception\InternalServerErrorHttpException when given file is invalid.
      */
-    protected function validateUploadedFile(UploadedFile $file = null): void
+    protected function validateUploadedFile($file): void
     {
         if (null === $file) {
             throw new BadRequestHttpException('File not found in request body');
         }
 
+        if (is_array($file)) {
+            throw new UnprocessableEntityHttpException('File parameter cannot be an array');
+        }
+
         if (! $file->isValid()) {
             throw new InternalServerErrorHttpException($file->getErrorMessage());
         }