urban-filehub/app/Http/Controllers/Api/FileController.php

<?php

namespace App\Http\Controllers\Api;

use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Routing\Controller as BaseController;

class FileController extends BaseController
{
    use AuthorizesRequests, DispatchesJobs, ValidatesRequests;

    /**
     *
     *  @return object
     *
     */
    public function index()
    {
        $files = scandir($dir);

        return response()->json([
            'files' => $files
        ]);
    }
}