if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['client-email']) && isset($_POST['id']) && isset($_POST['name']) && isset($_POST['price'])) {
    $productId = $_POST['id'];

    try {
        $stmt = $pdo->prepare("UPDATE products SET is_on_stock = 0, reserved_at = NOW() WHERE id = :id");
        $stmt->bindValue(':id', $productId, PDO::PARAM_INT);
        $stmt->execute();

        $bookingCode = 'RES-' . date('dm') . '-' . bin2hex(random_bytes(3));

        $data = array(
            'client-email' => $_POST['client-email'],
            'id' => $_POST['id'],
            'price' => $_POST['price'],
            'name' => $_POST['name'],
            'booking-code' => $bookingCode,
            'email-template' => ['reservation-confirmation'],
        );

        $_SESSION['reservation'] = [
            'product-id' => $_POST['id'],
            'product-name' => $_POST['name'],
            'price' => $_POST['price'],
            'client-email' => $_POST['client-email'],
        ];

        // For demo.web-street.fr
        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, "https://demo.web-street.fr/send-reservation.php");
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
        //curl_setopt($ch, CURLOPT_CAINFO, "/etc/ssl/certs/cacert.pem");


        //curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true); // включаем проверку
        //curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);    // проверка CN в сертификате
        //curl_setopt($ch, CURLOPT_CAINFO, "/etc/ssl/certs/ca-certificates.crt"); // явный путь

        $response = curl_exec($ch);

        if ($response === false) {
            error_log("cURL Error: " . curl_error($ch));
        } else {
            error_log("cURL Success: " . $response);
        }


        //curl_setopt($ch, CURLOPT_CAPATH, "/etc/ssl/certs");

        // Optional: Temporarily disable SSL verification for debugging
        /* curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0); */

        // For localhost
        /* $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, "http://verre.local/send-reservation.php");
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $response = curl_exec($ch);
        $error = curl_error($ch);
        curl_close($ch); */

        $error = curl_error($ch);
        error_log("RESPONSE: $response");
        error_log("CURL ERROR: $error");
        curl_close($ch);  // Close the cURL connection here

        error_log("cURL response: " . ($error ?: $response));

        if ($error) {
            // Handle cURL error if needed
            error_log('cURL error: ' . $error);
        } else {
            // Redirect on success
            header('Location: success-reservation.php');
        }
    } catch (PDOException $e) {
        // Log the error if needed
        error_log('Database error: ' . $e->getMessage());
        die('Error while booking. Try again later..');
    }
}