NEW: Add the ability to specify the MimeTypeDetector for the LocalFil…

…esystemAdapter

src/Flysystem/AssetAdapter.php

@@ -36,6 +36,16 @@ class AssetAdapter extends LocalFilesystemAdapter
      */
     private static $default_server = 'apache';
 
+    /**
+     * Default mime type detector to use. If not defined, the default mime type detector from Flysystem will be used.
+     * If you want to define one, this must be the name of a class that implements the interface
+     * League\MimeTypeDetection\MimeTypeDetector
+     *
+     * @config
+     * @var string
+     */
+    private static $default_mime_type_detector;
+
     /**
      * Config compatible permissions configuration
      *
@@ -68,7 +78,19 @@ public function __construct($root = null, $writeFlags = LOCK_EX, $linkHandling =
         $permissions = PortableVisibilityConverter::fromArray(
             $this->normalisePermissions($this->config()->get('file_permissions'))
         );
-        parent::__construct($root, $permissions, $writeFlags, $linkHandling);
+
+        // Get the mimetype detector from config, if defined, and ensure it's valid
+        $mimeTypeDetector = null;
+
+        if ($mimeTypeDetectorClassName = $this->config()->get('default_mime_type_detector')) {
+            $mimeTypeDetector = Injector::inst()->get($mimeTypeDetectorClassName);
+
+            if (!$mimeTypeDetector instanceof MimeTypeDetector) {
+                $mimeTypeDetector = null;
+            }
+        }
+
+        parent::__construct($root, $permissions, $writeFlags, $linkHandling, $mimeTypeDetector);
 
         // Configure server
         $this->configureServer();