[Branda Pro] - Exclude hub pages from the website(maintenance) mode

branda-exclude-hub-page-maintenance.php

<?php
/**
 * Plugin Name: [Branda Pro] Exclude hub pages from website mode
 * Description: Exclude hub pages from website mode.
 * Author: Prashant @ WPMUDEV
 * Task: SLS-5779
 * Author URI: https://premium.wpmudev.org
 * License: GPLv2 or later
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

add_filter( 'ub_get_value', function( $data, $module, $section, $name ) {
    if ( is_admin() ) {
        return $data;
    }

    if ( 'maintenance' !== $module && 'mode' !== $section ) {
        return $data;
    }

    $auto_front_page = get_site_option( 'wpmudev_hub_auto_front_page', array() );
    $auto_front_page = is_array( $auto_front_page ) ? $auto_front_page : array();

    if ( ! empty( $auto_front_page['page_id'] ) ) {
        $target_page = $auto_front_page['page_id'];
        if ( $target_page == get_the_ID() ) {
            return 'off';
        }
    }
    return $data;
}, 10, 4 );