<?php
/**
 * Routeur simple pour API REST
 */

declare(strict_types=1);

class Router
{
    private array $routes = [];
    private Request $request;

    public function __construct()
    {
        $this->request = new Request();
        $this->registerRoutes();
    }

    private function registerRoutes(): void
    {
        // Auth (routes publiques)
        $this->post('/auth/register', 'AuthController@register');
        $this->post('/auth/login', 'AuthController@login');
        $this->post('/auth/logout', 'AuthController@logout');
        $this->get('/auth/me', 'AuthController@me');

        // Projects
        $this->get('/projects', 'ProjectController@index');
        $this->get('/projects/{id}', 'ProjectController@show');
        $this->post('/projects', 'ProjectController@store');
        $this->put('/projects/{id}', 'ProjectController@update');
        $this->delete('/projects/{id}', 'ProjectController@destroy');

        // Tasks
        $this->get('/tasks', 'TaskController@index');
        $this->get('/tasks/{id}', 'TaskController@show');
        $this->post('/tasks', 'TaskController@store');
        $this->put('/tasks/{id}', 'TaskController@update');
        $this->delete('/tasks/{id}', 'TaskController@destroy');

        // Tags
        $this->get('/tags', 'TagController@index');
        $this->get('/tags/{id}', 'TagController@show');
        $this->post('/tags', 'TagController@store');
        $this->put('/tags/{id}', 'TagController@update');
        $this->delete('/tags/{id}', 'TagController@destroy');

        // Statuses
        $this->get('/statuses', 'StatusController@index');
        $this->get('/statuses/{id}', 'StatusController@show');
        $this->post('/statuses', 'StatusController@store');
        $this->put('/statuses/{id}', 'StatusController@update');
        $this->delete('/statuses/{id}', 'StatusController@destroy');
    }

    private function addRoute(string $method, string $path, string $handler): void
    {
        $this->routes[] = [
            'method' => $method,
            'path' => $path,
            'handler' => $handler,
        ];
    }

    public function get(string $path, string $handler): void
    {
        $this->addRoute('GET', $path, $handler);
    }

    public function post(string $path, string $handler): void
    {
        $this->addRoute('POST', $path, $handler);
    }

    public function put(string $path, string $handler): void
    {
        $this->addRoute('PUT', $path, $handler);
    }

    public function delete(string $path, string $handler): void
    {
        $this->addRoute('DELETE', $path, $handler);
    }

    public function dispatch(): void
    {
        $method = $this->request->getMethod();
        $uri = $this->request->getUri();

        foreach ($this->routes as $route) {
            if ($route['method'] !== $method) {
                continue;
            }

            $params = $this->matchRoute($route['path'], $uri);
            if ($params !== false) {
                $this->request->setParams($params);
                $this->callHandler($route['handler']);
                return;
            }
        }

        Response::notFound('Route not found');
    }

    private function matchRoute(string $routePath, string $uri): array|false
    {
        // Convertir /projects/{id} en regex /projects/([^/]+)
        $pattern = preg_replace('#\{(\w+)\}#', '([^/]+)', $routePath);
        $pattern = '#^' . $pattern . '$#';

        if (preg_match($pattern, $uri, $matches)) {
            array_shift($matches); // Retirer le match complet

            // Extraire les noms des paramètres
            preg_match_all('#\{(\w+)\}#', $routePath, $paramNames);
            $params = [];

            foreach ($paramNames[1] as $index => $name) {
                $params[$name] = $matches[$index] ?? null;
            }

            return $params;
        }

        return false;
    }

    private function callHandler(string $handler): void
    {
        [$controllerName, $methodName] = explode('@', $handler);

        if (!class_exists($controllerName)) {
            Response::error("Controller {$controllerName} not found", 500);
        }

        $controller = new $controllerName($this->request);

        if (!method_exists($controller, $methodName)) {
            Response::error("Method {$methodName} not found", 500);
        }

        $controller->$methodName();
    }
}