<?php
    class Response {
        protected $code;
        protected $body;

        public function __construct($code = 404, $msg = "") {
            $this->code = $code;
            $this->body = $msg;
        }

        public static function okResponse($message = "")
        {
            return new Response(200, $message);
        }

        public static function errorResponse($message = "") {
            return new Response(400, $message);
        }

        public static function errorInParametersResponse($message = "")
        {
            return new Response(400, $message);
        }

        public static function unauthorizedResponse($message = "")
        {
            return new Response(401, $message);
        }

        public static function notFoundResponse($message = "")
        {
            return new Response(404, $message);
        }

        public static function serverErrorResponse($message = "")
        {
            return new Response(500, $message);
        }

        public static function interceptEchos() {
            ob_start();
        }

        public static function getEchos() {
            return ob_get_clean();
        }

        public function send() {
            // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Origin
            header("Access-Control-Allow-Origin: *");

            header("Content-Type: application/json; charset=UTF-8");

            // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Methods
            header("Access-Control-Allow-Methods: GET,POST,PUT,DELETE");

            header("Access-Control-Max-Age: 3600"); // Maximum number of seconds the results can be cached.

            // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Headers
            header("Access-Control-Allow-Headers: Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With");

            http_response_code($this->code);
            echo $this->body;
            exit; // do we keep that?
        }
    }
?>