Add components:

Add core files to components directory,
Add response class.

app/Core/Request.php → app/Core/Components/Http/Request.php

@@ -1,7 +1,11 @@
 <?php
 
-namespace App\Core;
+namespace App\Core\Components\Http;
 
+/**
+ * Request Class
+ * @package App\Core\Components\Http\Request
+ */
 class Request
 {
     private array $request_data = [];
@@ -72,7 +76,7 @@ public function isset(string $key = 'params', string $params_key = null): bool
      */
     public function redirect(string $route): void
     {
-        header('Location: ' . siteUrl($route));
+        header('Location: ' . app_url($route));
         die();
     }
 

app/Core/Components/Http/Response.php

@@ -0,0 +1,245 @@
+<?php
+
+namespace App\Core\Components\Http;
+
+/**
+ * Response Class
+ * @package App\Core\Components\Http\Response
+ */
+class Response
+{
+    public const HTTP_CONTINUE = 100;
+    public const HTTP_SWITCHING_PROTOCOLS = 101;
+    public const HTTP_PROCESSING = 102;            // RFC2518
+    public const HTTP_EARLY_HINTS = 103;           // RFC8297
+    public const HTTP_OK = 200;
+    public const HTTP_CREATED = 201;
+    public const HTTP_ACCEPTED = 202;
+    public const HTTP_NON_AUTHORITATIVE_INFORMATION = 203;
+    public const HTTP_NO_CONTENT = 204;
+    public const HTTP_RESET_CONTENT = 205;
+    public const HTTP_PARTIAL_CONTENT = 206;
+    public const HTTP_MULTI_STATUS = 207;          // RFC4918
+    public const HTTP_ALREADY_REPORTED = 208;      // RFC5842
+    public const HTTP_IM_USED = 226;               // RFC3229
+    public const HTTP_MULTIPLE_CHOICES = 300;
+    public const HTTP_MOVED_PERMANENTLY = 301;
+    public const HTTP_FOUND = 302;
+    public const HTTP_SEE_OTHER = 303;
+    public const HTTP_NOT_MODIFIED = 304;
+    public const HTTP_USE_PROXY = 305;
+    public const HTTP_RESERVED = 306;
+    public const HTTP_TEMPORARY_REDIRECT = 307;
+    public const HTTP_PERMANENTLY_REDIRECT = 308;  // RFC7238
+    public const HTTP_BAD_REQUEST = 400;
+    public const HTTP_UNAUTHORIZED = 401;
+    public const HTTP_PAYMENT_REQUIRED = 402;
+    public const HTTP_FORBIDDEN = 403;
+    public const HTTP_NOT_FOUND = 404;
+    public const HTTP_METHOD_NOT_ALLOWED = 405;
+    public const HTTP_NOT_ACCEPTABLE = 406;
+    public const HTTP_PROXY_AUTHENTICATION_REQUIRED = 407;
+    public const HTTP_REQUEST_TIMEOUT = 408;
+    public const HTTP_CONFLICT = 409;
+    public const HTTP_GONE = 410;
+    public const HTTP_LENGTH_REQUIRED = 411;
+    public const HTTP_PRECONDITION_FAILED = 412;
+    public const HTTP_REQUEST_ENTITY_TOO_LARGE = 413;
+    public const HTTP_REQUEST_URI_TOO_LONG = 414;
+    public const HTTP_UNSUPPORTED_MEDIA_TYPE = 415;
+    public const HTTP_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
+    public const HTTP_EXPECTATION_FAILED = 417;
+    public const HTTP_I_AM_A_TEAPOT = 418;                                               // RFC2324
+    public const HTTP_MISDIRECTED_REQUEST = 421;                                         // RFC7540
+    public const HTTP_UNPROCESSABLE_ENTITY = 422;                                        // RFC4918
+    public const HTTP_LOCKED = 423;                                                      // RFC4918
+    public const HTTP_FAILED_DEPENDENCY = 424;                                           // RFC4918
+    public const HTTP_TOO_EARLY = 425;                                                   // RFC-ietf-httpbis-replay-04
+    public const HTTP_UPGRADE_REQUIRED = 426;                                            // RFC2817
+    public const HTTP_PRECONDITION_REQUIRED = 428;                                       // RFC6585
+    public const HTTP_TOO_MANY_REQUESTS = 429;                                           // RFC6585
+    public const HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE = 431;                             // RFC6585
+    public const HTTP_UNAVAILABLE_FOR_LEGAL_REASONS = 451;
+    public const HTTP_INTERNAL_SERVER_ERROR = 500;
+    public const HTTP_NOT_IMPLEMENTED = 501;
+    public const HTTP_BAD_GATEWAY = 502;
+    public const HTTP_SERVICE_UNAVAILABLE = 503;
+    public const HTTP_GATEWAY_TIMEOUT = 504;
+    public const HTTP_VERSION_NOT_SUPPORTED = 505;
+    public const HTTP_VARIANT_ALSO_NEGOTIATES_EXPERIMENTAL = 506;                        // RFC2295
+    public const HTTP_INSUFFICIENT_STORAGE = 507;                                        // RFC4918
+    public const HTTP_LOOP_DETECTED = 508;                                               // RFC5842
+    public const HTTP_NOT_EXTENDED = 510;                                                // RFC2774
+    public const HTTP_NETWORK_AUTHENTICATION_REQUIRED = 511;                             // RFC6585
+
+    /**
+     * @var string
+     */
+    public $headers;
+
+    /**
+     * @var string $charset
+     */
+    protected $charset = 'utf-8';
+
+    /**
+     * @var string
+     */
+    protected $content;
+
+    /**
+     * @var string
+     */
+    protected $version = '1.1';
+
+    /**
+     * @var int
+     */
+    protected $status_code;
+
+    /**
+     * @var string
+     */
+    protected $status_text;
+
+    /**
+     * Status codes translation table.
+     *
+     * Unless otherwise noted, the status code is defined in RFC2616.
+     *
+     * @var array
+     */
+    public static $status_texts = [
+        100 => 'Continue',
+        101 => 'Switching Protocols',
+        102 => 'Processing',            // RFC2518
+        103 => 'Early Hints',
+        200 => 'OK',
+        201 => 'Created',
+        202 => 'Accepted',
+        203 => 'Non-Authoritative Information',
+        204 => 'No Content',
+        205 => 'Reset Content',
+        206 => 'Partial Content',
+        207 => 'Multi-Status',          // RFC4918
+        208 => 'Already Reported',      // RFC5842
+        226 => 'IM Used',               // RFC3229
+        300 => 'Multiple Choices',
+        301 => 'Moved Permanently',
+        302 => 'Found',
+        303 => 'See Other',
+        304 => 'Not Modified',
+        305 => 'Use Proxy',
+        307 => 'Temporary Redirect',
+        308 => 'Permanent Redirect',    // RFC7238
+        400 => 'Bad Request',
+        401 => 'Unauthorized',
+        402 => 'Payment Required',
+        403 => 'Forbidden',
+        404 => 'Not Found',
+        405 => 'Method Not Allowed',
+        406 => 'Not Acceptable',
+        407 => 'Proxy Authentication Required',
+        408 => 'Request Timeout',
+        409 => 'Conflict',
+        410 => 'Gone',
+        411 => 'Length Required',
+        412 => 'Precondition Failed',
+        413 => 'Content Too Large',                                           // RFC-ietf-httpbis-semantics
+        414 => 'URI Too Long',
+        415 => 'Unsupported Media Type',
+        416 => 'Range Not Satisfiable',
+        417 => 'Expectation Failed',
+        418 => 'I\'m a teapot',                                               // RFC2324
+        421 => 'Misdirected Request',                                         // RFC7540
+        422 => 'Unprocessable Content',                                       // RFC-ietf-httpbis-semantics
+        423 => 'Locked',                                                      // RFC4918
+        424 => 'Failed Dependency',                                           // RFC4918
+        425 => 'Too Early',                                                   // RFC-ietf-httpbis-replay-04
+        426 => 'Upgrade Required',                                            // RFC2817
+        428 => 'Precondition Required',                                       // RFC6585
+        429 => 'Too Many Requests',                                           // RFC6585
+        431 => 'Request Header Fields Too Large',                             // RFC6585
+        451 => 'Unavailable For Legal Reasons',                               // RFC7725
+        500 => 'Internal Server Error',
+        501 => 'Not Implemented',
+        502 => 'Bad Gateway',
+        503 => 'Service Unavailable',
+        504 => 'Gateway Timeout',
+        505 => 'HTTP Version Not Supported',
+        506 => 'Variant Also Negotiates',                                     // RFC2295
+        507 => 'Insufficient Storage',                                        // RFC4918
+        508 => 'Loop Detected',                                               // RFC5842
+        510 => 'Not Extended',                                                // RFC2774
+        511 => 'Network Authentication Required',                             // RFC6585
+    ];
+
+    public function __construct(?string $content = '', int $status = 200, string $headers = '')
+    {
+        $this->content = $content;
+        $this->status_code = $status;
+        $this->headers = $headers;
+    }
+
+    public function __toString()
+    {
+        return sprintf('HTTP/%s %s %s', $this->version, $this->status_code, $this->status_text) . "\r\n" .
+            $this->headers . "\r\n" .
+            $this->getContent();
+    }
+
+    public function setStatusCode(int $status): Response
+    {
+        $this->status_code = $status;
+
+        return $this;
+    }
+
+    public function getStatusCode(): int
+    {
+        return $this->status_code;
+    }
+
+    public function setCharset(string $charset): Response
+    {
+        $this->charset = $charset;
+
+        return $this;
+    }
+
+    public function getCharset(): string
+    {
+        return $this->charset;
+    }
+
+    public function setContent(?string $content): Response
+    {
+        $this->content = $content ?? '';
+
+        return $this;
+    }
+
+    public function getContent(): string
+    {
+        return $this->content;
+    }
+
+    /**
+     * Json encode
+     * 
+     * @param  $data
+     * @throws RuntimeException
+     * @return string|null
+     */
+    public function jsonEncode($data): ?string
+    {
+        return json_encode($data, JSON_THROW_ON_ERROR | JSON_PRETTY_PRINT);
+    }
+
+    public function setHeader(string $header): Response
+    {
+        $this->headers = header("Content-Type: $header");
+
+        return $this;
+    }
+}

app/Core/Routing/Route.php → app/Core/Components/Routing/Route.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Core\Routing;
+namespace App\Core\Components\Routing;
 
 class Route
 {

app/Core/Routing/Router.php → app/Core/Components/Routing/Router.php

@@ -1,10 +1,10 @@
 <?php
 
-namespace App\Core\Routing;
+namespace App\Core\Components\Routing;
 
 use Closure;
-use App\Core\Request;
-use App\Core\Routing\Route;
+use App\Core\Components\Http\Request;
+use App\Core\Components\Routing\Route;
 use App\Exceptions\ClassNotFoundException;
 use App\Exceptions\MethodNotFoundException;
 use App\Http\Middleware\Middleware as GlobalMiddleware;

bootstrap/init.php

@@ -10,6 +10,6 @@
 $whoops->pushHandler(new \Whoops\Handler\PrettyPageHandler);
 $whoops->register();
 
-$request = new \App\Core\Request();
+$request = new \App\Core\Components\Http\Request();
 
 include base_path('routes/web.php');

public/index.php

@@ -2,7 +2,7 @@
 
 require_once '../bootstrap/init.php';
 
-use App\Core\Routing\Router;
+use App\Core\Components\Routing\Router;
 
 $router = new Router();
 $router->run();

routes/web.php

@@ -1,6 +1,6 @@
 <?php
 
-use App\Core\Routing\Route;
+use App\Core\Components\Routing\Route;
 use App\Http\Middleware\BlockIE;
 
 Route::get('/', function () {