add all controllers logic

app/Http/Resources/Frontend/FrontendUserResource.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Http\Resources\Frontend;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class FrontendUserResource extends JsonResource
+{
+    public function toArray(Request $request): array
+    {
+        return [
+            'firstname' => $this->firstname ?? null,
+            'lastname' => $this->lastname ?? null,
+        ];
+    }
+}