class Middleware
{
    /**
     * Saves order acting data with `amazonCheckoutSessionId`
     *
     * @author Evan D Shaw <evandanielshaw@gmail.com>
     * @return Closure&#Function#5abe872d
     */
    public function saveOrderActingData() {
        return function ($res, $args) {
            if ($res instanceof GenericError) {
                return $res;
            }
            // save order data preprocessing
            usces_save_order_acting_data($args['id']);
            return $res;
        };
    }

    /**
     * Updates `$_SESSION['usces_entry']`
     *
     * @author Evan D Shaw <evandanielshaw@gmail.com>
     * @return Closure&#Function#bea97561
     */
    public function updateWelcartEntries() {
        return function () {
            (new API\WelcartEntries())->setEntry();
        };
    }

    /**
     * Updates price data
     *
     * @author Evan D Shaw <evandanielshaw@gmail.com>
     * @return Closure&#Function#66087043
     */
    public function updateFees() {
        return function () {
            (new API\Fees())->setFees();
        };
    }

    /**
     * Sets order condition if not yet set. Also sets reserve pre-order ID.
     *
     * @author Evan D Shaw <evandanielshaw@gmail.com>
     * @return Closure&#Function#90bb46d6
     */
    public function setOrderConditions() {
        return function () {
            global $usces;

            if (!$usces->cart->is_order_condition()) {
                $order_conditions = $usces->get_condition();
                $usces->cart->set_order_condition($order_conditions);
            }
            $usces->set_reserve_pre_order_id();
        };
    }

    /**
     * Sets `$_SESSION['usces_member']['point']` with member points if member is logged in
     * and Welcart point system is turned on
     *
     * @author Evan D Shaw <evandanielshaw@gmail.com>
     * @return Closure&#Function#54f1ed46
     */
    public function setMemberPoints() {
        return function () {
            global $usces, $wpdb;

            if (usces_is_member_system() && usces_is_member_system_point() && $usces->is_member_logged_in()) {
                $member_table = $wpdb->prefix . 'usces_member';
                $query = $wpdb->prepare(
                    "SELECT mem_point
                    FROM $member_table
                    WHERE ID = %d",
                    $_SESSION['usces_member']['ID']
                );
                $mem_point = $wpdb->get_var($query);
                $_SESSION['usces_member']['point'] = $mem_point;
            }
        };
    }
}