<?php

add_action( 'toolbox_add_conditional_options' , 'add_geo_detect', 10, 1 );

function add_geo_detect() {
	toolboxExtender::add_conditional_option(
									// filter name
									'geo_detect',
									// option key and title
									array('key'=> 'geo_check' , 'title' => __('Geo Check', 'textdomain') ),
									// fields that are part of this options settings.
									// No toggling of subfields or forms
									array(
										'query_parameter' => array(
											'type'          => 'text',
											'label'			=> __( 'isoCode to check for', 'textdomain' ),
											'default'		=> 'US',
										),
									)
								);

  add_filter( 'geo_detect' , 'check_geo_location' , 10, 3 );

	function check_geo_location ( $is_visible, $param , $node ) {
		$record = geoip_detect2_get_info_from_current_ip();
		if ( $record->country->isoCode !== strtoupper($param['query_parameter']) ) return false;
	    return $is_visible;
	}

}