add pdf reader modul

src/Entity/DocumentVersion.php

@@ -181,4 +181,26 @@ class DocumentVersion
     {
         return $this->isActive;
     }
+
+    //#########################################################
+    // Helper
+    //#########################################################
+    public function getFileExtension(): string
+    {
+        if (!$this->filePath) {
+            return '';
+        }
+
+        return mb_strtolower(pathinfo($this->filePath, PATHINFO_EXTENSION));
+    }
+
+    public function getFileTypeLabel(): string
+    {
+        return match ($this->getFileExtension()) {
+            'pdf' => 'PDF',
+            'txt' => 'Text',
+            'md'  => 'Markdown',
+            default => strtoupper($this->getFileExtension()),
+        };
+    }
 }