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<?php |
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/** |
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* Selami Router |
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* PHP version 7.1+ |
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* |
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* @category Library |
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* @package Router |
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* @author Mehmet Korkmaz <[email protected]> |
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* @license https://github.com/selamiphp/router/blob/master/LICENSE (MIT License) |
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* @link https://github.com/selamiphp/router |
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*/ |
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declare(strict_types = 1); |
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namespace Selami\Router; |
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use Selami\Router\Exceptions\InvalidRequestMethodException; |
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/** |
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* Router |
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* |
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* This class is responsible for registering route objects, |
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* determining aliases if available and finding requested route |
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*/ |
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final class Router |
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{ |
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public const HTML = 1; |
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public const JSON = 2; |
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public const TEXT = 3; |
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public const XML = 4; |
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public const REDIRECT = 5; |
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public const DOWNLOAD = 6; |
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public const CUSTOM = 7; |
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public const OPTIONS = 'OPTIONS'; |
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public const HEAD = 'HEAD'; |
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public const GET = 'GET'; |
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public const POST = 'POST'; |
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public const PUT = 'PUT'; |
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public const DELETE = 'DELETE'; |
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public const PATCH = 'PATCH'; |
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/** |
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* Routes array to be registered. |
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* Some routes may have aliases to be used in templating system |
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* Route item can be defined using array key as an alias key. |
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* Each route item is an array has items respectively: Request Method, Request Uri, Controller/Action, Return Type. |
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* |
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* @var array |
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*/ |
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private $routes = []; |
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/** |
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* Aliases array to be registered. |
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* |
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* @var array |
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*/ |
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private $aliases = []; |
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/** |
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* HTTP request Method |
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* |
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* @var string |
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*/ |
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private $method; |
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/** |
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* Request Uri |
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* |
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* @var string |
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*/ |
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private $requestedPath; |
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/** |
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* Default return type if not noted in the $routes |
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* |
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* @var int |
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*/ |
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private $defaultReturnType; |
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/** |
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* @var null|string |
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*/ |
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private $cachedFile; |
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/** |
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* Valid Request Methods array. |
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* Make sures about requested methods. |
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* |
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* @var array |
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*/ |
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private static $validRequestMethods = [ |
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'GET', |
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'OPTIONS', |
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'HEAD', |
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'POST', |
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'PUT', |
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'DELETE', |
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'PATCH' |
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]; |
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/* |
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* Router constructor. |
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* Create new router. |
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*/ |
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public function __construct( |
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int $defaultReturnType, |
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string $method, |
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string $requestedPath |
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) { |
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if (!in_array($method, self::$validRequestMethods, true)) { |
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$message = sprintf('%s is not valid Http request method.', $method); |
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throw new InvalidRequestMethodException($message); |
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} |
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$this->method = $method; |
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$this->requestedPath = $requestedPath; |
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$this->defaultReturnType = ($defaultReturnType >=1 && $defaultReturnType <=7) ? $defaultReturnType : self::HTML; |
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} |
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public function withSubFolder(string $folder) : self |
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{ |
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$new = clone $this; |
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$new->requestedPath = $this->extractFolder($this->requestedPath, $folder); |
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return $new; |
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} |
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public function withCacheFile(string $fileName) : self |
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{ |
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$new = clone $this; |
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$new->cachedFile = $fileName; |
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return $new; |
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} |
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/* |
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* Remove sub folder from requestedPath if defined |
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*/ |
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private function extractFolder(string $requestPath, string $folder) : string |
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{ |
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if (!empty($folder)) { |
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$requestPath = '/' . trim((string) preg_replace('#^/' . $folder . '#msi', '/', $requestPath), '/'); |
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} |
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if ($requestPath === '') { |
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$requestPath = '/'; |
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} |
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return $requestPath; |
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} |
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public function add( |
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$requestMethods, |
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string $route, |
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$action, |
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?int $returnType = null, |
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?string $alias = null |
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) : void { |
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$requestMethodsGiven = is_array($requestMethods) ? $requestMethods : [$requestMethods]; |
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$returnType = $this->determineReturnType($returnType); |
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foreach ($requestMethodsGiven as $requestMethod) { |
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$this->checkRequestMethodIsValid($requestMethod); |
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if ($alias !== null) { |
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$this->aliases[$alias] = $route; |
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} |
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$this->routes[] = [strtoupper($requestMethod), $route, $action, $returnType]; |
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} |
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} |
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public function __call(string $method, array $args) : void |
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{ |
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$defaults = [ |
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null, |
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null, |
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$this->defaultReturnType, |
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null |
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]; |
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[$route, $action, $returnType, $alias] = array_merge($args, $defaults); |
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$this->add($method, $route, $action, $returnType, $alias); |
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} |
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private function determineReturnType(?int $returnType) : int |
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{ |
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if ($returnType === null) { |
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return $this->defaultReturnType; |
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} |
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return ($returnType >=1 && $returnType <=7) ? $returnType : self::HTML; |
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} |
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private function checkRequestMethodIsValid(string $requestMethod) : void |
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{ |
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if (!in_array(strtoupper($requestMethod), self::$validRequestMethods, true)) { |
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$message = sprintf('%s is not valid Http request method.', $requestMethod); |
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throw new InvalidRequestMethodException($message); |
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} |
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} |
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public function getRoute() : Route |
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{ |
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$selamiDispatcher = new Dispatcher($this->routes, $this->defaultReturnType, $this->cachedFile); |
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$routeInfo = $selamiDispatcher->dispatcher() |
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->dispatch($this->method, $this->requestedPath); |
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return $selamiDispatcher->runDispatcher($routeInfo) |
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->withAliases($this->aliases); |
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} |
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} |
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selamiphp /
router
