This is a sample static class for returning json

Message.php

<?php

namespace App\Library;

class Message
{
    public static function error($msg = 'Something went wrong', $code = 400, $reference = null)
    {
        return response()->json(
            [
                'error' => true,
                'message' => $msg,
                'reference' => $reference,
            ],
            $code
        );
    }

    public static function success($msg = 'Request Success', $code = 200, $obj = null)
    {
        return response()->json(
            [
                'error' => false,
                'message' => $msg,
                'data' => $obj,
            ],
            $code
        );
    }
}

Sample.php

<?php

return Message::error("Unauthorized user. Please Contact Admin to Active", 401);