<?php

namespace Api\Core;

class Router {
    private $routes = [];

    public function add($method, $path, $handler) {
        $this->routes[] = [
            'method' => $method,
            'path' => $path,
            'handler' => $handler
        ];
    }

    public function handle($method, $uri) {
        // Simple router logic: match path exactly or with :id
        foreach ($this->routes as $route) {
            $pattern = preg_replace('/\/:\w+/', '/(\d+)', $route['path']);
            if ($route['method'] === $method && preg_match('#^' . $pattern . '$#', $uri, $matches)) {
                array_shift($matches); // remove the full match
                return $this->executeHandler($route['handler'], $matches);
            }
        }
        Response::error('Route not found', 404);
    }

    private function executeHandler($handler, $params) {
        list($controllerName, $methodName) = explode('@', $handler);
        $controllerClass = "Api\\Controllers\\" . $controllerName;
        
        if (class_exists($controllerClass)) {
            $controller = new $controllerClass();
            if (method_exists($controller, $methodName)) {
                return call_user_func_array([$controller, $methodName], $params);
            }
        }
        Response::error('Controller or method not found', 500);
    }
}