New 'getDownloadFilename' method for extensibility (#3504)

* New 'getDownloadFilename' method for extensibility
Added Symfony HeaderUtils to create content disposition

* Refactored how download file name is determined

---------

Co-authored-by: Chris Page <[email protected]>

src/MediaCollections/Models/Media.php

@@ -14,6 +14,7 @@
 use Illuminate\Mail\Attachment;
 use Illuminate\Support\Arr;
 use Illuminate\Support\Collection;
+use Illuminate\Support\Str;
 use Spatie\MediaLibrary\Conversions\Conversion;
 use Spatie\MediaLibrary\Conversions\ConversionCollection;
 use Spatie\MediaLibrary\Conversions\ImageGenerators\ImageGeneratorFactory;
@@ -138,6 +139,11 @@ public function getAvailableUrl(array $conversionNames): string
         return $this->getUrl();
     }
 
+    public function getDownloadFilename(): string
+    {
+        return $this->file_name;
+    }
+
     public function getAvailableFullUrl(array $conversionNames): string
     {
         foreach ($conversionNames as $conversionName) {
@@ -324,11 +330,13 @@ public function toInlineResponse($request)
 
     private function buildResponse($request, string $contentDispositionType)
     {
+        $filename = str_replace('"', '\'', Str::ascii($this->getDownloadFilename()));
+
         $downloadHeaders = [
             'Cache-Control' => 'must-revalidate, post-check=0, pre-check=0',
             'Content-Type' => $this->mime_type,
             'Content-Length' => $this->size,
-            'Content-Disposition' => $contentDispositionType.'; filename="'.$this->file_name.'"',
+            'Content-Disposition' => $contentDispositionType . '; filename="' . $filename . '"',
             'Pragma' => 'public',
         ];