Lumen ApiController base

ApiController.php

<?php

namespace App\Http\Controllers;

use Laravel\Lumen\Routing\Controller;
use Symfony\Component\HttpFoundation\StreamedResponse;

class ApiController extends Controller
{
    /**
     * Http Statuscode
     * @var integer
     */
    protected $statusCode = 200;

    /**
     * Returns a Json response.
     *
     * @param  mixed $data
     * @param  array  $headers
     * @return Illuminate\Http\Response
     */
    public function respond($data, $headers = [])
    {
        return response()->json($data, $this->getStatusCode(), $headers);
    }

    /**
     * Outputs a file stream to the browser.
     *
     * @param  callable $callback
     * @param  array $headers
     * @return null
     */
    protected function respondWithStream(callable $callback, array $headers)
    {
        $response = new StreamedResponse($callback, $this->getStatusCode(), $headers);
        $response->send();
    }

    /**
     * Returns 404 Not found
     *
     * @param  string $message
     * @return Illuminate\Http\Response
     */
    public function respondNotFound($message = 'Not found!')
    {
        return $this->setStatusCode(404)->respondWithError($message);
    }

    /**
     * Returns 500 Server Error
     * @param  string $message
     * @return Illuminate\Http\Response
     */
    public function respondInternalError($message = 'Internal Error!')
    {
        return $this->setStatusCode(500)->respondWithError($message);
    }

    /**
     * Returns an error message with the response.
     *
     * @param  string $message
     * @return Illuminate\Http\Response
     */
    public function respondWithError($message)
    {
        return $this->respond([
            'error' => [
                'message' => $message,
                'status_code' => $this->getStatusCode()
            ]
        ]);
    }

    /**
     * Gets the value of statusCode.
     *
     * @return mixed
     */
    public function getStatusCode()
    {
        return $this->statusCode;
    }

    /**
     * Sets the value of statusCode.
     *
     * @param mixed $statusCode the status code
     *
     * @return self
     */
    protected function setStatusCode($statusCode)
    {
        $this->statusCode = $statusCode;

        return $this;
    }
}