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<?php |
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namespace alkemann\h2l; |
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use Closure; |
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/** |
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* Class Router |
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* |
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* @package alkemann\h2l |
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*/ |
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class Router |
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{ |
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public static $DELIMITER = '|'; |
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private static $aliases = []; |
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private static $routes = []; |
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/** |
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* @param string $alias |
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* @param string $real |
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*/ |
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public static function alias(string $alias, string $real): void |
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{ |
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self::$aliases[$alias] = $real; |
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} |
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/** |
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* Add new dynamic route to application |
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* |
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* @param string $url Regex that is valid for preg_match, including named groups |
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* @param callable $callable |
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* @param mixed $methods a single Request::<GET/POST/PUT/PATCH/DELETE> or an array of multiple |
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* @internal param Closure $closure Code to run on this match |
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*/ |
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public static function add(string $url, callable $callable, $methods = [Request::GET]): void |
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{ |
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if ($callable instanceof Closure) { |
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$closure = $callable; |
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} else { |
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$closure = Closure::fromCallable($callable); |
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} |
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foreach ((array)$methods as $method) { |
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self::$routes[$method][$url] = $closure; |
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} |
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} |
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/** |
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* Given a request url and request method, identify dynamic route or return fixed route |
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* |
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* @param string $url Request url, i.e. '/api/user/32' |
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* @param string $method Request::<GET/POST/PATCH/PUT/DELETE> |
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* @return interfaces\Route |
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*/ |
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public static function match(string $url, string $method = Request::GET): interfaces\Route |
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{ |
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$url = self::$aliases[$url] ?? $url; |
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if (isset(self::$routes[$method])) { |
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if (isset(self::$routes[$method][$url])) { |
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return new Route($url, self::$routes[$method][$url]); |
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} |
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// TODO cache of previous matched dynamic routes |
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$route = self::matchDynamicRoute($url, $method); |
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if ($route) { |
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return $route; |
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} |
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} |
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// TODO cache of valid static routes, maybe with a try, catch, finally? |
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return new Route($url, function (Request $request) { |
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$page = response\Page::fromRequest($request); |
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if ($page->isValid()) { |
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return $page; |
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} |
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}); |
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} |
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private static function matchDynamicRoute(string $url, string $method = Request::GET): ?interfaces\Route |
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{ |
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foreach (self::$routes[$method] as $route => $cb) { |
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if ($route[0] !== substr($route, -1) || $route[0] !== static::$DELIMITER) { |
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continue; |
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} |
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$result = preg_match($route, $url, $matches); |
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if (!$result) { |
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continue; |
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} |
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$parameters = array_filter( |
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$matches, |
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function ($v) { |
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return !is_int($v); |
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}, |
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\ARRAY_FILTER_USE_KEY |
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); |
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return new Route($url, $cb, $parameters); |
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} |
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return null; |
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} |
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} |
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alkemann /
h2l
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