Base class for Laravel Api controller

ApiController.php

<?php

use Backend\Classes\Controller;
use Illuminate\Http\Response;

class ApiController extends Controller {

    protected $statusCode = Response::HTTP_OK;

    public function setStatusCode($code)
    {
        $this->statusCode = $code;

        return $this;
    }

    public function respondNotFound(ApiError $error)
    {
        return $this->setStatusCode(Response::HTTP_NOT_FOUND)->respondError($error);
    }

    public function respondInternalError(ApiError $error)
    {
        return $this->setStatusCode(Response::HTTP_INTERNAL_SERVER_ERROR)->respondError($error);
    }

    protected function respond($data, $headers = [])
    {
        return response()->json($data, $this->statusCode, $headers);
    }

    public function respondValidationError(ApiError $error)
    {
        return $this->setStatusCode(Response::HTTP_NOT_ACCEPTABLE)->respondError($error);
    }

    public function respondUnauthorizedError(ApiError $error)
    {
        return $this->setStatusCode(Response::HTTP_UNAUTHORIZED)->respondError($error);
    }

    public function respondSuccess($data = [])
    {
        return $this->respond([
            'success' => true,
            'error' => null,
            'data' => $data
        ]);
    }

    public function respondError(ApiError $error)
    {
        return $this->respond([
            'success' => false,
            'error' => [
                'code' => $error->getCode(),
                'message' => $error->getMessage()
            ]
        ]);
    }
}

ApiError.php

<?php namespace Progforce\Dermadetect\Api;
class ApiError {
    protected $code;
    protected $message;
    const ERROR_TYPES = [
        'token_absent' => [
            'code' => 101,
            'message' => 'Token was not provided'
        ],
        // ...
    ];
    public function __construct($code, $message)
    {
        $this->code = $code;
        $this->message = $message;
    }
    public function setMessage($msg)
    {
        $this->message = $msg;
    }
    public function getMessage()
    {
        return $this->message;
    }
    public function getCode()
    {
        return $this->code;
    }
    public static function create($type, $msg = null)
    {
        $errorData = self::ERROR_TYPES[$type];
        $error = new static($errorData['code'], $msg ? $msg : $errorData['message']);
        return $error;
    }
}