Make /files/primary return only file and /download shouldn't download w/o primary file

Author: Luffyyy

backend/app/Http/Controllers/FileController.php

@@ -419,12 +419,14 @@ function downloadLatestFileVersion(Request $request, Mod $mod) {
     /**
      * Get Primary File
      *
-     * Returns the primary file of the mod (the primary download)
+     * Returns the primary file of the mod or the only file
      */
     public function getPrimaryFile(Request $request, Mod $mod) {
-        if ($mod->download_type == 'file') {
-            return $mod->downloadRelation;
+        $file = $mod->download;
+        if (!$file instanceof File) {
+            abort(404);
         }
+        return $file;
     }
 
     /**

backend/app/Http/Controllers/ModController.php

@@ -679,14 +679,12 @@ public function report(Request $request, Mod $mod)
      * @group Files
      */
     public function downloadPrimaryFile(Mod $mod) {
-        $file = $mod->downloadRelation;
-        if (!$file instanceof File) {
-            $file = $mod->files()->firstOrFail();
-        }
+        $file = $mod->download;
+
         if (isset($file)) {
             return redirect($file->downloadUrl);
         } else {
-            return abort(404, 'Mod has no files!');
+            return abort(404, 'Mod has no files or has no primary file');
         }
     }