View file app/Controllers/Controller.php

<?php

declare(strict_types=1);

namespace App\Controllers;

use Psr\Http\Message\ResponseInterface as Response;

/**
 * Controller
 */
abstract class Controller
{
    /**
     * Creates a JSON response.
     *
     * @param Response $response
     * @param mixed    $data
     * @param int      $status
     * @param int      $flags
     *
     * @return Response
     */
    protected function json(Response $response, mixed $data, int $status = 200, int $flags = 0): Response
    {
        $response->getBody()->write((string) json_encode($data, $flags));

        return $response->withStatus($status)->withHeader('Content-Type', 'application/json');
    }

    /**
     * Creates a redirect response.
     *
     * @param Response $response
     * @param string   $url
     * @param int      $status
     *
     * @return Response
     */
    protected function redirect(Response $response, string $url, int $status = 302): Response
    {
        return $response->withStatus($status)->withHeader('Location', $url);
    }
}