<?php

namespace App\Core;

class Router {
    protected $routes = [];

    public function add($method, $path, $handler) {
        $path = preg_replace('/\{([a-z]+)\}/', '(?P<\1>[^/]+)', $path);
        $this->routes[] = [
            'method' => strtoupper($method),
            'path' => '#^' . $path . '$#',
            'handler' => $handler
        ];
    }

    public function dispatch($method, $uri) {
        $uri = parse_url($uri, PHP_URL_PATH);
        
        foreach ($this->routes as $route) {
            if ($route['method'] === strtoupper($method) && preg_match($route['path'], $uri, $matches)) {
                $handler = $route['handler'];
                $params = array_filter($matches, 'is_string', ARRAY_FILTER_USE_KEY);
                
                if (is_array($handler)) {
                    [$controllerClass, $methodName] = $handler;
                    $controller = new $controllerClass();
                    return $controller->$methodName($params);
                }
                
                return $handler($params);
            }
        }

        header("HTTP/1.0 404 Not Found");
        echo "404 Not Found";
    }
}