Added setMimeHeader, works for PDF,PNG and GIFs. Need to check other mimes.

app/Http/Controllers/FileController.php

@@ -31,13 +31,22 @@ class FileController extends Controller
 
         foreach($mimes as $key=>$value){
             if(strpos($hex,$value) !== FALSE){
-                echo $key;
+                return $key;
             }
         }
     }
 
-    public function setMimeHeader(){
-        // set correct header for showing the data type
+    public function setMimeHeader($mimetype){
+        $headers = [
+            'PDF' => 'application/pdf',
+            'PNG' => 'image/png',
+            'GIF' => 'image/gif',
+        ];
+
+        // error supressing @headers[$mimetype] because it might fatal err to undefined index
+        if(@$headers[$mimetype] != NULL){
+            header('Content-Type:'.$headers[$mimetype]);
+        }
     }
 
     /**
@@ -79,8 +88,10 @@ class FileController extends Controller
      */
     public function show($hash)
     {
-        // echo $this->ipfs->cat($hash);
-        self::getMime($hash);
+        $mime = self::getMime($hash);
+        self::setMimeHeader($mime);
+
+        echo $this->ipfs->cat($hash);
     }
 
     /**