middlewares fixed govno

Reviewed-on: #22

README.md

@@ -1,14 +1,8 @@
-The MINIMAL framework that does **not limit your project with its own rules**, has **no dependencies**, implements the **best practices** of popular MVC-frameworks, it **VERY fast** and **optimized** for all the innovations in **PHP 8.2** 🤟
+# MINIMAL
+The best code-to-utility framework
 
-Can be configured to work with **any database** `core::$session` and **any HTML template engine** `$this->view`
-*personally, i prefer **ArangoDB** and **Twig***
-
-## Nearest plans (first half of 2025)
-1. Add **middlewares** technology
-2. Route sorting in the router `router::sort()`
-3. Add trigger routes from within routes
-4. Think about adding asynchronous executions
-5. Write an article describing the principles of the framework
+## Nearest plans (2025)
+1. Routes sorting `router::sort()`
 
 ## Installation 
 Execute: `composer require mirzaev/minimal`
@@ -16,49 +10,19 @@ Execute: `composer require mirzaev/minimal`
 ## Usage
 *index.php*
 ```php
-// Initializing the router
-$router = new router;
-
-// Initializing of routes
-$router
-    ->write('/', 'catalog', 'index', 'GET')
-	->write('/search', 'catalog', 'search', 'POST')
-	->write('/session/connect/telegram', 'session', 'telegram', 'POST')
-	->write('/product/$id', 'catalog', 'product', 'POST')
-	->write('/$categories...', 'catalog', 'index', 'POST'); // Collector (since 0.3.0)
-
 // Initializing the core
-$core = new core(namespace: __NAMESPACE__, router: $router, controller: new controller(false), model: new model(false));
+$core = new core(namespace: __NAMESPACE__);
 
-// Handle the request
-echo $core->start();
+// Initializing routes
+$core->router
+	->write('/', new route('index', 'index'), 'GET')
+	->write('/search', new route('search', 'search'), 'POST')
+	->write('/product/create', new route('product', 'create'), 'PUT')
+	->write('/product/$id', new route('product', 'read'), 'GET')
+	->write('/product/$id', new route('product', 'read'), 'POST')
+	->write('/$categories', new route('categories', 'read'), 'GET') // Collector (since 0.3.0)
+;
+
+// Handling the request
+$core->start();
 ```
-
-## Examples of projects based on MINIMAL
-
-### ebala
-**Repository:** https://git.mirzaev.sexy/mirzaev/ebala<br>
-**Github mirror:** https://github.com/mature-woman/ebala<br>
-*I earned more than a **million rubles** from this project*<br>
-*Repositories **may** be closed at the request of the customer*<br>
-
-### huesos 
-**Repository:** https://git.mirzaev.sexy/mirzaev/huesos<br>
-**Guthub mirror:** https://github.com/mature-woman/huesos<br>
-*The basis for developing chat-robots with Web App technology (for example for Telegram)*<br>
-
-### arming_bot 
-**Repository:** https://git.mirzaev.sexy/mirzaev/arming_bot<br>
-**Guthub mirror:** https://github.com/mature-woman/arming_bot<br>
-*Chat-robot based on huesos*<br>
-
-### notchat
-**Repository:** https://git.mirzaev.sexy/mirzaev/notchat<br>
-**Github mirror:** https://github.com/mature-woman/notchat<br>
-*P2P chat project with different blockchains and smart stuff*<br>
-
-### site-repression
-**Link:** https://repression.mirzaev.sexy<br>
-**Repository:** https://git.mirzaev.sexy/mirzaev/site-repression<br>
-**Github mirror:** https://github.com/mature-woman/site-repression<br>
-*A simple site for my article about **political repressions in Russia** and my **kidnapping by Wagner PMC operatives** from my house*<br>

composer.json

@@ -1,14 +1,14 @@
 {
     "name": "mirzaev/minimal",
     "type": "framework",
-    "description": "My vision of a good framework",
+    "description": "The best code-to-utility framework",
     "keywords": [
         "mvc",
         "framework",
         "lightweight"
     ],
     "license": "WTFPL",
-    "homepage": "https://git.mirzaev.sexy/mirzaev/minimal",
+    "homepage": "https://git.svoboda.works/mirzaev/minimal",
     "authors": [
         {
             "name": "Arsen Mirzaev Tatyano-Muradovich",
@@ -18,8 +18,8 @@
         }
     ],
     "support": {
-        "docs": "https://git.mirzaev.sexy/mirzaev/minimal/wiki",
-        "issues": "https://git.mirzaev.sexy/mirzaev/minimal/issues"
+        "docs": "https://git.svoboda.works/mirzaev/minimal/wiki",
+        "issues": "https://git.svoboda.works/mirzaev/minimal/issues"
     },
     "require": {
         "php": "~8.4"

mirzaev/minimal/system/controller.php

@@ -11,12 +11,15 @@ use mirzaev\minimal\model,
 	mirzaev\minimal\http\request,
 	mirzaev\minimal\http\enumerations\status;
 
-// Build-in libraries
-use exception;
+// Built-in libraries
+use exception,
+	RuntimeException as exception_runtime;
 
 /**
  * Controller
  *
+ * @package mirzaev\minimal
+ *
  * @var core $core An instance of the core
  * @var request $request Request
  * @var model $model An instance of the model connected in the core
@@ -24,8 +27,6 @@ use exception;
  *
  * @method void __construct(core $core) Constructor
  *
- * @package mirzaev\minimal
- *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */
@@ -56,12 +57,32 @@ class controller
 	/**
 	 * Model
 	 *
+	 * @throws exception_runtime if reinitialize the property
+	 * @throws exception_runtime if an attempt to write null
+	 *
 	 * @var model $model An instance of the model connected in the core
 	 */
-	public model $model {
+	public ?model $model = null {
 		// Write
-		set (model $model) {
-				$this->model ??= $model;
+		set (model|null $model) {
+			if (isset($this->{__PROPERTY__})) {
+				// The property is already initialized
+
+				// Exit (fail)
+				throw new exception_runtime('The property is already initialized: ' . __PROPERTY__, status::internal_server_error->value);
+			}
+
+			if ($model instanceof model) {
+				// Validated model
+
+				// Writing
+				$this->model = $model;
+			} else {
+				// Not validated model
+	
+				// Exit (fail)
+				throw new exception_runtime('The property must be an instance of model', status::internal_server_error->value);
+			}
 		}
 
 		// Read

mirzaev/minimal/system/core.php

@@ -14,7 +14,9 @@ use mirzaev\minimal\router,
 	mirzaev\minimal\http\enumerations\status;
 
 // Built-in libraries
-use exception,
+use Closure as closure,
+	Exception as exception,
+	RuntimeException as exception_runtime,
 	BadMethodCallException as exception_method,
 	DomainException as exception_domain,
 	InvalidArgumentException as exception_argument,
@@ -25,6 +27,8 @@ use exception,
 /**
  * Core
  *
+ * @package mirzaev\minimal
+ *
  * @param string $namespace Namespace where the core was initialized from
  * @param controller $controller An instance of the controller
  * @param model $model An instance of the model
@@ -36,8 +40,6 @@ use exception,
  * @method string|null request(request $request, array $parameters = []) Handle request
  * @method string|null route(route $route, string $method) Handle route
  *
- * @package mirzaev\minimal
- *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */
@@ -112,7 +114,27 @@ final class core
 	 */
 	public function start(): ?string
 	{
-		// Handle request and exit (success)
+		if (php_sapi_name() === 'cli') {
+			// Processing from CLI
+
+			// Initializing options
+			$options = getopt('', [
+				'method::',
+				'uri::',
+				'protocol::'
+			]);
+
+			// Writing method into the environment constant
+			$_SERVER["REQUEST_METHOD"] = $options['method'] ?? 'GET';
+
+			// Writing URI into the environment constant
+			$_SERVER['REQUEST_URI'] =  $options['uri'] ?? '/';
+
+			// Writing verstion of HTTP protocol into the environment constant
+			$_SERVER['SERVER_PROTOCOL'] = $options['protocol'] ?? 'CLI';
+		}
+
+		// Processing the request and exit (success)
 		return $this->request(new request(environment: true));
 	}
 
@@ -122,30 +144,59 @@ final class core
 	 * Handle request
 	 *
 	 * @param request $request The request
-	 * @paam array $parameters parameters for merging with route parameters
+	 * @param array $parameters parameters for merging with route parameters
 	 *
 	 * @return string|null Response 
 	 */
 	public function request(request $request, array $parameters = []): ?string
 	{
-		// Matching a route 
+		// Matching the route 
 		$route = $this->router->match($request);
 
 		if ($route) {
-			// Initialized a route
+			// Initialized the route
 
 			if (!empty($parameters)) {
 				// Recaived parameters
 
-				// Merging parameters with route parameters
+				// Merging parameters with the route parameters
 				$route->parameters = $parameters + $route->parameters;
 			}
 
-			// Writing request options from route options
-			$request->options = $route->options;
+			// Preparing the route function
+			$action = function() use ($request, $route): string {
+				// Writing the request options from the route options
+				$request->options = $route->options;
 
-			// Handling a route and exit (success)
-			return $this->route($route, $request);
+				// Preparing the route function
+				$action = fn(): string => (string) $this->route($route, $request);
+
+				foreach ($route->middlewares as $middleware) {
+					// Iterating over the route middlewares
+
+					// Preparing the middleware function
+					$action = fn(): string => $middleware(next: $action);
+				}
+
+				// Processing middlewares and the route functions
+				$response = $action();
+
+				// Exit (success)
+				return $response;
+			};
+
+			foreach ($this->router->middlewares as $middleware) {
+				// Iterating over the router middlewares
+
+				// Preparing the middleware function
+				$action = fn(): string => $middleware(next: $action);
+			}
+
+			// Processing middlewares and the router request function
+			$response = $action();
+
+			// Exit (success)
+			return $response;
 		}
 
 		// Exit (fail)
@@ -193,31 +244,35 @@ final class core
 		// Deinitializing name of the controller class
 		unset($controller);
 
-		// Initializing name if the model class
-		$model = $route->model;
+		if (!isset($route->controller->model)) {
+			// Not initialized the model in the controller
 
-		if ($route->model instanceof model) {
-			// Initialized the model
-		} else if (class_exists($model = "$this->namespace\\models\\$model")) {
-			// Found the model by its name
+			// Initializing name if the model class
+			$model = $route->model;
 
-			// Initializing the model
-			$route->model = new $model;
-		} else if (!empty($route->model)) {
-			// Not found the model and $route->model has a value
+			if ($route->model instanceof model) {
+				// Initialized the model
+			} else if (class_exists($model = "$this->namespace\\models\\$model")) {
+				// Found the model by its name
 
-			// Exit (fail)
-			throw new exception_domain("Failed to find the model: $model", status::not_implemented->value);
-		}
+				// Initializing the model
+				$route->model = new $model;
+			} else if (!empty($route->model)) {
+				// Not found the model and $route->model has a value
 
-		// Deinitializing name of the model class
-		unset($model);
+				// Exit (fail)
+				throw new exception_domain("Failed to find the model: $model", status::not_implemented->value);
+			}
 
-		if ($route->model instanceof model) {
-			// Initialized the model
+			// Deinitializing name of the model class
+			unset($model);
 
-			// Writing the model to the controller
-			$route->controller->model = $route->model;
+			if ($route->model instanceof model) {
+				// Initialized the model
+
+				// Writing the model to the controller
+				$route->controller->model = $route->model;
+			}
 		}
 
 		// Writing the request to the controller
@@ -226,8 +281,15 @@ final class core
 		if (method_exists($route->controller, $route->method)) {
 			// Found the method of the controller
 
-			// Executing method of the controller and exit (success)
-			return $route->controller->{$route->method}(...($route->parameters + $request->parameters));
+			try {
+				// Executing method of the controller and exit (success)
+				return $route->controller->{$route->method}(...($route->parameters + $request->parameters));
+			} catch (exception $exception) {
+				// Catched an exception
+
+				// Exit (fail)
+				throw new exception_runtime('Caught an error while processing the route', status::internal_server_error->value, $exception);
+			}
 		} else {
 			// Not found the method of the controller
 

mirzaev/minimal/system/http/enumerations/content.php

@@ -4,6 +4,13 @@ declare(strict_types=1);
 
 namespace mirzaev\minimal\http\enumerations;
 
+// Files of the project
+use mirzaev\minimal\http\enumerations\status;
+
+// Built-in libraries
+use InvalidArgumentException as exception_argument,
+	DomainException as exception_domain;
+
 /**
  * Content
  *
@@ -18,7 +25,7 @@ enum content: string
 {
 	case any = '*/*';
 
-	// Text
+		// Text
 
 	case txt = 'text/plain';
 	case css = 'text/css';
@@ -26,7 +33,7 @@ enum content: string
 	case html = 'text/html';
 	case js = 'text/javascript'; // js + mjs (https://www.rfc-editor.org/rfc/rfc9239#name-text-javascript)
 
-	// Applications
+		// Applications
 
 	case binary = 'application/octet-stream';
 	case encoded = 'application/x-www-form-urlencoded';
@@ -49,7 +56,7 @@ enum content: string
 	case sh = 'application/x-sh';
 	case xhtml = 'application/xhtml+xml';
 
-	// Audio
+		// Audio
 
 	case aac = 'audio/aac';
 	case mp3 = 'audio/mpeg';
@@ -57,7 +64,7 @@ enum content: string
 	case oga = 'audio/ogg';
 	case weba = 'audio/webm';
 
-	// Images
+		// Images
 
 	case gif = 'image/gif';
 	case jpeg = 'image/jpeg';
@@ -70,7 +77,7 @@ enum content: string
 	case bmp = 'image/bmp';
 	case ico = 'image/vnd.microsoft.icon';
 
-	// Videos
+		// Videos
 
 	case avi = 'video/x-msvideo';
 	case mp4 = 'video/mp4';
@@ -78,17 +85,39 @@ enum content: string
 	case ogv = 'video/ogg';
 	case ts = 'video/mp2t';
 
-	// Fonts
+		// Fonts
 
 	case otf = 'font/otf';
 	case ttf = 'font/ttf';
 	case woff = 'font/woff';
 	case woff2 = 'font/woff2';
 
-	// Multipart
+		// Multipart
 
 	case form = 'multipart/form-data';
 	case mixed = 'multipart/mixed';
 	case alternative = 'multipart/alternative';
 	case related = 'multipart/related';
+
+	/**
+	 * Extension
+	 *
+	 * Returns the file extension without a dot
+	 *
+	 * @throws exception_argument if content can not have file extension
+	 * @throws exception_domain if failed to recognize content
+	 *
+	 * @return string File extension
+	 */
+	public function extension(): string
+	{
+		// Exit (success)
+		return match ($this) {
+			self::jpeg => 'jpg',
+			self::png => 'png',
+			self::webp => 'webp',
+			self::form, self::mixed, self::alternative, self::related => throw new exception_argument('Content can not have file extension', status::internal_server_error->value),
+			default => throw new exception_domain('Failed to recognize content: ' . $this->value, status::not_found->value)
+		};
+	}
 }

mirzaev/minimal/system/http/enumerations/protocol.php

@@ -16,9 +16,11 @@ namespace mirzaev\minimal\http\enumerations;
  */
 enum protocol: string
 {
-	case HTTP_3 = 'HTTP/3';
-	case HTTP_2 = 'HTTP/2';
-	case HTTP_1_1 = 'HTTP/1.1';
-	case HTTP_1_0 = 'hTTP/1.0';
-	case HTTP_0_9 = 'HTTP/0.9';
+	case http_3 = 'HTTP/3.0';
+	case http_2 = 'HTTP/2.0';
+	case http_1_1 = 'HTTP/1.1';
+	case http_1 = 'HTTP/1.0';
+	case http_0_9 = 'HTTP/0.9';
+
+	case cli = 'CLI';
 }

mirzaev/minimal/system/http/request.php

@@ -20,6 +20,8 @@ use DomainException as exception_domain,
 /**
  * Request
  *
+ * @package mirzaev\minimal\http
+ *
  * @param method $method Method
  * @param string $uri URI
  * @param protocol $protocol Version of HTTP protocol
@@ -32,8 +34,6 @@ use DomainException as exception_domain,
  * @method response response() Generate response for request
  * @method self header(string $name, string $value) Write a header to the headers property
  *
- * @package mirzaev\minimal\http
- *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */
@@ -51,7 +51,7 @@ final class request
 	 */
 	public method $method {
 		// Write
-		set (method|string $value) {
+		set(method|string $value) {
 			if (isset($this->{__PROPERTY__})) {
 				// The property is already initialized
 
@@ -96,7 +96,7 @@ final class request
 	 */
 	public string $uri {
 		// Write
-		set (string $value) {
+		set(string $value) {
 			if (isset($this->{__PROPERTY__})) {
 				// The property is already initialized
 
@@ -121,7 +121,7 @@ final class request
 	 */
 	public protocol $protocol {
 		// Write
-		set (protocol|string $value) {
+		set(protocol|string $value) {
 			if (isset($this->{__PROPERTY__})) {
 				// The property is already initialized
 
@@ -187,7 +187,7 @@ final class request
 	 */
 	public array $parameters {
 		// Write
-		set (array $value) {
+		set(array $value) {
 			if (isset($this->{__PROPERTY__})) {
 				// The property is already initialized
 
@@ -222,7 +222,7 @@ final class request
 	 */
 	public array $files {
 		// Write
-		set (array $value) {
+		set(array $value) {
 			if (isset($this->{__PROPERTY__})) {
 				// The property is already initialized
 
@@ -233,7 +233,7 @@ final class request
 			if (isset($this->method)) {
 				// Initialized method 
 
-				if ($this->method->body())	{
+				if ($this->method->body()) {
 					// Request with this method can has body
 
 					// Writing
@@ -270,7 +270,7 @@ final class request
 	 */
 	public array $options {
 		// Write
-		set (array $value) {
+		set(array $value) {
 			if (isset($this->{__PROPERTY__})) {
 				// The property is already initialized
 
@@ -324,49 +324,60 @@ final class request
 		bool $environment = false
 	) {
 		// Writing method from argument into the property
-		if (isset($method)) $this->method = $method;
+		if (isset($method))
+			$this->method = $method;
 
 		// Writing URI from argument into the property
-		if (isset($uri)) $this->uri = $uri;
+		if (isset($uri))
+			$this->uri = $uri;
 
 		// Writing verstion of HTTP protocol from argument into the property
-		if (isset($protocol)) $this->protocol = $protocol;
+		if (isset($protocol))
+			$this->protocol = $protocol;
 
-		if (isset($headers)) {
-			// Received headers
+		// Declaring the buffer of headers
+		$buffer = [];
 
-			// Declaring the buffer of headers
-			$buffer = [];
+		foreach (
+			match (true) {
+				isset($headers) => $headers,
+				php_sapi_name() !== 'cli' => getallheaders(),
+				default => []
+			} as $name => $value
+		) {
+			// Iterating over headers
 
-			foreach ($headers ?? [] as $name => $value) {
-				// Iterating over headers
+			// Normalizing name of header (https://www.rfc-editor.org/rfc/rfc7540#section-8.1.2)
+			$name = mb_strtolower($name, 'UTF-8');
 
-				// Normalizing name of header (https://www.rfc-editor.org/rfc/rfc7540#section-8.1.2)
-				$name = mb_strtolower($name, 'UTF-8');
+			if (empty($name)) {
+				// Not normalized name of header
 
-				if (empty($name)) {
-					// Not normalized name of header
-					
-					// Exit (fail)
-					throw new exception_domain('Failed to normalize name of header', status::internal_server_error->value);
-				} 
-
-				// Writing into the buffer of headers
-				$buffer[$name] = $value;
+				// Exit (fail)
+				throw new exception_domain('Failed to normalize name of header', status::internal_server_error->value);
 			}
 
-			// Writing headers from argument into the property
-			$this->headers = $buffer;
-
-			// Deinitializing the buffer of headers
-			unset($buffer);
+			// Writing into the buffer of headers
+			$buffer[$name] = $value;
 		}
 
+		if (!empty($buffer)) {
+			// Initialized at lease one header
+
+			// Writing headers into the property
+			$this->headers = $buffer;
+		}
+
+		// Deinitializing the buffer of headers
+		unset($buffer);
+
 		// Writing parameters from argument into the property
-		if (isset($parameters)) $this->parameters = $parameters;
+		if (isset($parameters))
+			$this->parameters = $parameters;
 
 		// Writing files from argument into the property
-		if (isset($files)) $this->files = $files;
+		if (isset($files))
+			$this->files = $files;
 
 		if ($environment) {
 			// Requested to write values from environment
@@ -380,37 +391,7 @@ final class request
 			// Writing verstion of HTTP protocol from environment into the property
 			$this->protocol ??= $_SERVER['SERVER_PROTOCOL'];
 
-			if (!isset($headers)) {
-				// Received headers
-			
-				// Declaring the buffer of headers
-				$buffer = [];
-
-				foreach (getallheaders() ?? [] as $name => $value) {
-					// Iterating over headers
-
-					// Normalizing name of header (https://www.rfc-editor.org/rfc/rfc7540#section-8.1.2)
-					$name = mb_strtolower($name, 'UTF-8');
-
-					if (empty($name)) {
-						// Not normalized name of header
-					
-						// Exit (fail)
-						throw new exception_domain('Failed to normalize name of header', status::internal_server_error->value);
-					} 
-
-					// Writing into the buffer of headers
-					$buffer[$name] = $value;
-				}
-
-				// Writing headers from environment into the property
-				$this->headers = $buffer;
-
-				// Deinitializing the buffer of headers
-				unset($buffer);
-			}
-
-			if ($this->headers['content-type'] === content::json->value) {
+			if (str_starts_with($this->headers['content-type'] ?? '', content::json->value)) {
 				// The body contains "application/json"
 
 				// Initializing data from the input buffer
@@ -438,10 +419,13 @@ final class request
 
 				// Writing files from environment into the property
 				$this->files = $_FILES ?? [];
-			}	else if ($this->method->body())	{
+			} else if ($this->method->body()) {
 				// Non POST method and can has body
 
-				if (match($this->headers['content-type']) { content::form->value, content::encoded->value => true, default => false }) {
+				if (
+					str_starts_with($this->headers['content-type'], content::form->value) ||
+					str_starts_with($this->headers['content-type'], content::encoded->value)
+				) {
 					// Non POST method and the body content type is "multipart/form-data" or "application/x-www-form-urlencoded"
 
 					// Writing parameters and files from environment into the properties
@@ -464,8 +448,10 @@ final class request
 		}
 
 		// Validating of required properties
-		if (empty($this->method)) throw new exception_argument('Failed to initialize method of the request', status::internal_server_error->value);
-		if (empty($this->uri)) throw new exception_argument('Failed to initialize URI of the request', status::internal_server_error->value);
+		if (empty($this->method))
+			throw new exception_argument('Failed to initialize method of the request', status::internal_server_error->value);
+		if (empty($this->uri))
+			throw new exception_argument('Failed to initialize URI of the request', status::internal_server_error->value);
 	}
 
 	/**
@@ -481,7 +467,7 @@ final class request
 		return new response(protocol: $this->protocol, status: status::ok);
 	}
 
-  /**
+	/**
 	 * Header
 	 *
 	 * Write a header to the headers property

mirzaev/minimal/system/http/response.php

@@ -20,6 +20,8 @@ use DomainException as exception_domain,
 /**
  * Response
  *
+ * @package mirzaev\minimal\http
+ *
  * @param protocol $protocol Version of HTTP protocol
  * @param status $status Status
  * @param array $headers Headers
@@ -37,8 +39,6 @@ use DomainException as exception_domain,
  * @method self clean() Delete everything in the output buffer
  * @method self end() Initializes response headers and flushes the output buffer
  *
- * @package mirzaev\minimal\http
- *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */
@@ -49,7 +49,6 @@ final class response
 	 *
 	 * @see https://wiki.php.net/rfc/property-hooks (find a table about backed and virtual hooks)
 	 * 
-	 * @throws exception_runtime if reinitialize the property
 	 * @throws exception_domain if failed to recognize HTTP version
 	 *
 	 * @var protocol $protocol Version of HTTP protocol
@@ -57,12 +56,6 @@ final class response
 	public protocol $protocol {
 		// Write
 		set (protocol|string $value) {
-			if (isset($this->{__PROPERTY__})) {
-				// The property is already initialized
-
-				// Exit (fail)
-				throw new exception_runtime('The property is already initialized: ' . __PROPERTY__, status::internal_server_error->value);
-			}
 
 			if ($value instanceof protocol) {
 				// Received implementation of HTTP version
@@ -95,7 +88,6 @@ final class response
 	 *
 	 * @see https://wiki.php.net/rfc/property-hooks (find a table about backed and virtual hooks)
 	 * 
-	 * @throws exception_runtime if reinitialize the property
 	 * @throws exception_domain if failed to recognize status
 	 *
 	 * @var status $status Status
@@ -103,12 +95,6 @@ final class response
 	public status $status {
 		// Write
 		set (status|string $value) {
-			if (isset($this->{__PROPERTY__})) {
-				// The property is already initialized
-
-				// Exit (fail)
-				throw new exception_runtime('The property is already initialized: ' . __PROPERTY__, status::internal_server_error->value);
-			}
 
 			if ($value instanceof status) {
 				// Received implementation of status
@@ -161,10 +147,10 @@ final class response
 		set (string $value) {
 			// Writing
 			$this->body = $value;
-		};
+		}
 
 		// Read
-		&get => $this->body;
+		get => $this->body;
 	}
 
 	/**
@@ -334,7 +320,7 @@ final class response
 	 */
 	public function validate(request $request): self|false
 	{
-		if (str_contains($request->headers['accept'], $this->headers['content-type'] ?? '')) {
+		if (str_contains($request->headers['accept'] ?? '', $this->headers['content-type'] ?? '')) {
 			// Validated with "accept" and "content-type"
 	
 			// Exit (success)
@@ -353,12 +339,42 @@ final class response
 	 *
 	 * Generates the status line (HTTP/2 200 OK)
 	 *
+	 * @param protocol|null $protocol Version of HTTP
+	 * @param status|null $status Status code and status text
+	 *
 	 * @return string The status line
 	 */
-	public function status(): string 
+	public function status(?protocol $protocol = null, ?status $status = null): string 
 	{
+		// Declaring buffer of status line
+		$buffer = '';
+
+		if ($protocol instanceof protocol) {
+			// Received version of HTTP
+
+			// Writing to buffer of status line
+			$buffer .= $protocol->value . ' ';
+		} else {
+			// Not received version of HTTP
+
+			// Writing to buffer of status line
+			$buffer .= $this->protocol->value . ' ';
+		}
+
+		if ($status instanceof status) {
+			// Received status
+
+			// Writing to buffer of status line
+			$buffer .= $status->value . ' ' . $status->label();
+		} else {
+			// Not received status
+
+			// Writing to buffer of status line
+			$buffer .= $this->status->value . ' ' . $this->status->label();
+		}
+
 		// Exit (success)
-		return $this->protocol->value . ' ' . $this->status->value . ' ' . $this->status->label();
+		return $buffer;
 	}
 
   /**
@@ -437,10 +453,10 @@ final class response
 		flush();
 
 		// Deinitializing headers property
-		unset($this->headers);
+		$this->headers = [];
 	
 		// Deinitializing headers
-		header_remove();
+		/* header_remove(); */
 		
 		// Exit (success)
 		return $this;

mirzaev/minimal/system/middleware.php

@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace mirzaev\minimal;
+
+// Files of the project
+use mirzaev\minimal\http\request,
+	mirzaev\minimal\route;
+
+// Built-in libraries
+use Closure as closure;
+
+/**
+ * Middleware
+ *
+ * @see https://en.wikipedia.org/wiki/Middleware Middlewares
+ *
+ * @package mirzaev\minimal
+ *
+ * @param closure $function Function
+ *
+ * @method void __construct(closure $function) Constructor
+ *
+ * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
+ * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
+ */
+final class middleware
+{
+	/**
+	 * Function
+	 * 
+	 * @var closure $function Function
+	 */
+	 public readonly closure $function;
+
+	/**
+	 * Constructor
+	 *
+	 * @param closure $function Function
+	 *
+	 * @return void
+	 */
+	public function __construct(closure $function)
+	{
+		// Writing the function
+		$this->function = $function;
+	}
+
+	/**
+	 * Invoke
+	 *
+	 * @param callable $next
+	 *
+	 * @return string Output
+	 */
+	 public function __invoke(callable $next): string
+	 {
+		 // Processing the middleware (entering into recursion)
+		
+		 return (string) ($this->function)(next: $next);
+	 }
+}

mirzaev/minimal/system/model.php

@@ -10,10 +10,10 @@ use	mirzaev\minimal\traits\magic;
 /**
  * Model
  *
- * @method void __construct() Constructor
- *
  * @package mirzaev\minimal
  *
+ * @method void __construct() Constructor
+ *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */

mirzaev/minimal/system/route.php

@@ -4,24 +4,33 @@ declare(strict_types=1);
 
 namespace mirzaev\minimal;
 
+// Files of the project
+use mirzaev\minimal\controller,
+	mirzaev\minimal\middleware,
+	mirzaev\minimal\traits\middleware as middleware_trait;
+
 /**
  * Route
  *
+ * @package mirzaev\minimal
+ *
  * @param string|controller $controller Name of the controller
  * @param string $method Name of the method of the method of $this->controller
  * @param string|model $model Name of the model
  * @param array $parameters Arguments for the $this->method (will be concatenated together with generated request parameters)
  * @param array $options Options for `request_parse_body($options)`
+ * @param array $middlewares Stack of middlewares
  *
- * @method void __construct(string|controller $controller, ?string $method, string|model|null $model, array $parameters, array $options) Constructor
- *
- * @package mirzaev\minimal
+ * @method void __construct(string|controller $controller, ?string $method, string|model|null $model, array $parameters, array $options, array $middlewares) Constructor
+ * @method self middleware(middleware $middleware) Middleware
  *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */
 final class route
 {
+	use middleware_trait;
+
 	/**
 	 * Controller
 	 * 
@@ -37,7 +46,7 @@ final class route
 	 * 
 	 * @var string $method Name of the method of the method of $this->controller
 	 */
-	public string $method{
+	public string $method {
 		// Read
 		get => $this->method;
 	}
@@ -69,8 +78,8 @@ final class route
 	 *
 	 * Required if $this->method !== method::post
 	 *
-	 * @see https://wiki.php.net/rfc/rfc1867-non-post about request_parse_body()
-	 * @see https://wiki.php.net/rfc/property-hooks (find a table about backed and virtual hooks)
+	 * @see https://wiki.php.net/rfc/rfc1867-non-post About request_parse_body()
+	 * @see https://wiki.php.net/rfc/property-hooks Hooks (find a table about backed and virtual hooks)
 	 *
 	 * @throws exception_runtime if reinitialize the property
 	 * 
@@ -78,7 +87,7 @@ final class route
 	 */
 	public array $options {
 		// Write
-		set (array $value) {
+		set(array $value) {
 			if (isset($this->{__PROPERTY__})) {
 				// The property is already initialized
 
@@ -113,6 +122,7 @@ final class route
 	 * @param string|model|null $model Name of the model
 	 * @param array $parameters Arguments for the $method (will be concatenated together with generated request parameters)
 	 * @param array $options Options for `request_parse_body` (Only for POST method)
+	 * @param array $middlewares Middlewares stack
 	 *
 	 * @return void
 	 */
@@ -121,7 +131,8 @@ final class route
 		?string $method = 'index',
 		string|model|null $model = null,
 		array $parameters = [],
-		array $options = []
+		array $options = [],
+		array $middlewares = []
 	) {
 		// Writing name of the controller
 		$this->controller = $controller;
@@ -135,6 +146,32 @@ final class route
 		// Writing parameters
 		$this->parameters = $parameters;
 
+		// Declaring the register of the middlewares stack validity
+		$stack = true;
+
+		foreach ($middlewares as $middleware) {
+			// Iterating over middlewares
+
+			if ($middleware instanceof middleware) {
+				// Initialized the middleware
+			} else {
+				// Not initialized the middleware
+
+				// Writing the register of the middlewares stack validity
+				$stack = false;
+
+				// Exit (fail)
+				break;
+			}
+		}
+
+		if ($stack) {
+			// The middlewares stack is valid
+
+			// Writing the middlewares stack
+			$this->middlewares = $middlewares;
+		}
+
 		// Writing options
 		if (match ($method) {
 			'GET', 'PUT', 'PATCH', 'DELETE' => true,

mirzaev/minimal/system/router.php

@@ -7,7 +7,8 @@ namespace mirzaev\minimal;
 // Files of the project
 use mirzaev\minimal\route,
 	mirzaev\minimal\http\request,
-	mirzaev\minimal\traits\singleton;
+	mirzaev\minimal\traits\singleton,
+	mirzaev\minimal\traits\middleware as middleware_trait;
 
 // Build-ing libraries
 use InvalidArgumentException as exception_argument;
@@ -15,21 +16,23 @@ use InvalidArgumentException as exception_argument;
 /**
  * Router
  *
+ * @package mirzaev\minimal
+ *
  * @param array $routes Registry of routes
  *
  * @method self write(string $urn, route $route, string|array $method) Write route to registry of routes (fluent interface)
  * @method route|null match(request $request) Match request URI with registry of routes
- * @method self sort() Sort routes (DEV)
+ * @method self sort() Sort routes (DEVELOPMENT)
  * @method string universalize(string $urn) Universalize URN
- *
- * @package mirzaev\minimal
+ * @method self middleware(middleware $middleware) Middleware
+ * @param array $middlewares Stack of middlewares
  *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */
 final class router
 {
-	use singleton;
+	use singleton, middleware_trait;
 
 	/**
 	 * Routes

mirzaev/minimal/system/traits/magic.php

@@ -13,13 +13,13 @@ use exception;
 /**
  * Trait of magical methods
  *
+ * @package mirzaev\minimal\traits
+ *
  * @method void __set(string $name, mixed $value) Write property
  * @method mixed __get(string $name) Read property
  * @method void __unset(string $name) Delete property
  * @method bool __isset(string $name) Check property for initialization
  *
- * @package mirzaev\minimal\traits
- *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */

mirzaev/minimal/system/traits/middleware.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+namespace mirzaev\minimal\traits;
+
+// Files of the project
+use mirzaev\minimal\middleware as instance;
+
+/**
+ * Trait of middleware
+ *
+ * @see https://en.wikipedia.org/wiki/Middleware Middlewares
+ *
+ * @package mirzaev\minimal\traits
+ *
+ * @param array $middlewares Stack of middlewares
+ *
+ * @method self middleware(middleware $middleware) Middleware
+ *
+ * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
+ * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
+ */
+trait middleware
+{
+	/**
+	 * Middlewares
+	 * 
+	 * @var array $middlewares The middlewares stack
+	 */
+	public array $middlewares = [] {
+		// Read
+		&get => $this->middlewares;
+	}
+
+	/**
+	 * Middleware
+	 *
+	 * Write the middleware into the middlewares stack
+	 *
+	 * @param instance $middleware The middleware
+	 *
+	 * @return self The instance from which the method was called (fluent interface)
+	 */
+	public function middleware(instance $middleware): self
+	{
+		// Writing into the middlewares stack
+		$this->middlewares[] = $middleware;
+
+		// Exit (success)
+		return $this;
+	}
+}

mirzaev/minimal/system/traits/singleton.php

@@ -10,10 +10,10 @@ use exception;
 /**
  * Trait of singleton
  *
- * @method static initialize() Initialize an instance
- *
  * @package mirzaev\minimal\traits
  *
+ * @method static initialize() Initialize an instance
+ *
  * @license http://www.wtfpl.net/ Do What The Fuck You Want To Public License
  * @author Arsen Mirzaev Tatyano-Muradovich <arsen@mirzaev.sexy>
  */