ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
require_once __DIR__ . '/includes/cart.php';

$uri = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
$uri = rtrim($uri, '/') ?: '/';

// Remove base path if project is in a subdirectory
$scriptDir = dirname($_SERVER['SCRIPT_NAME']);
if ($scriptDir !== '/' && strpos($uri, $scriptDir) === 0) {
    $uri = substr($uri, strlen($scriptDir));
}
$uri = rtrim($uri, '/') ?: '/';

// Handle cart actions
if ($_SERVER['REQUEST_METHOD'] === 'POST' && $uri === '/cart/add') {
    $product_id = $_POST['product_id'] ?? '';
    $qty = (int)($_POST['qty'] ?? 1);
    if ($product_id) {
        cart_add($product_id, $qty);
    }
    header('Location: ' . script_base() . '/cart');
    exit;
}

if ($uri === '/cart/update') {
    $id = $_GET['id'] ?? '';
    $qty = (int)($_GET['qty'] ?? 1);
    if ($id) {
        cart_update($id, $qty);
    }
    header('Location: ' . script_base() . '/cart');
    exit;
}

if ($uri === '/cart/remove') {
    $id = $_GET['id'] ?? '';
    if ($id) {
        cart_remove($id);
    }
    header('Location: ' . script_base() . '/cart');
    exit;
}

// Route to pages
$routes = [
    '/' => ['file' => 'pages/home.php', 'params' => []],
    '/shop' => ['file' => 'pages/shop.php', 'params' => []],
    '/collections' => ['file' => 'pages/collections.php', 'params' => []],
    '/about' => ['file' => 'pages/about.php', 'params' => []],
    '/contact' => ['file' => 'pages/contact.php', 'params' => []],
    '/returns-exchanges' => ['file' => 'pages/returns.php', 'params' => []],
    '/cart' => ['file' => 'pages/cart.php', 'params' => []],
    '/checkout' => ['file' => 'pages/checkout.php', 'params' => []],
];

// Dynamic routes
if (preg_match('#^/product/(.+)$#', $uri, $matches)) {
    $route_params = ['slug' => $matches[1]];
    include __DIR__ . '/pages/product.php';
    exit;
}

if (preg_match('#^/collection/(.+)$#', $uri, $matches)) {
    $route_params = ['slug' => $matches[1]];
    include __DIR__ . '/pages/collection_detail.php';
    exit;
}

if (isset($routes[$uri])) {
    $route_params = $routes[$uri]['params'];
    include __DIR__ . '/' . $routes[$uri]['file'];
    exit;
}

// 404
http_response_code(404);
require_once __DIR__ . '/includes/header.php';
echo '<div class="container"><div class="empty-state"><h3>404 - Page Not Found</h3><p>The page you are looking for does not exist.</p><a href="' . script_base() . '/" class="btn btn-primary">Back to Home</a></div></div>';
require_once __DIR__ . '/includes/footer.php';

function script_base() {
    $dir = dirname($_SERVER['SCRIPT_NAME']);
    return $dir === '/' ? '' : $dir;
}