我有以下一段代码，只要用户购买了订阅包，就会发布其帖子，并在其包过期后将帖子的状态更改为草稿。我只是想知道如何编辑它，以便用户可以创建一篇帖子，并且帖子会自动设置为草稿，然后在用户完成包付款后，帖子的状态会更新为发布？任何帮助都将不胜感激。

if ( ! in_array( $new_status, array( \'active\', \'trial\' ) ) ) {
        $user_limits = stm_get_post_limits( $user_id );

        $posts_args = array(
            \'orderby\'        => \'post_date\',
            \'order\'          => \'DESC\',
            \'post_type\'      => \'listings\',
            \'post_status\'    => \'publish\',
            \'posts_per_page\' => - 1,
            \'meta_query\'     => array(
                array(
                    \'key\'     => \'stm_car_user\',
                    \'value\'   => $user_id,
                    \'compare\' => \'\'
                )
            ),
            \'fields\'         => \'ids\'
        );

        $user_posts = get_posts( $posts_args );
        if ( count( $user_posts ) > $user_limits[\'posts_allowed\'] ) {
            array_splice( $user_posts, 0, $user_limits[\'posts_allowed\'] );
            foreach ( $user_posts as $user_post ) {
                $draft_post = array(
                    \'ID\'          => $user_post,
                    \'post_status\' => \'draft\'
                );
                wp_update_post( $draft_post );
            }
        }

        /*Change user back to private if not admin*/
        if(!user_can($user_id, \'manage_options\')) {
            wp_update_user( array(
                \'ID\'   => $user_id,
                \'role\' => \'privateseller\'
            ) );
        }

    } else {
        /*If plan includes dealeship, change user role to dealer*/
        if ( $role == \'dealer\' ) {
            wp_update_user( array(
                \'ID\'   => $user_id,
                \'role\' => \'stm_dealer\'
            ) );
        }
    }