messengerchat.php

См. документацию.

<?php
 
namespace Bitrix\Seo\BusinessSuite\Configuration\Facebook\Fields\Config;
 
final class MessengerChat extends AbstractConfigField
{
    private static function checkUrl($url) : bool
    {
        return
            is_string($url) &&
            preg_match('/^((https:\/\/)|(http:\/\/)){1}[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,6}$/i',$url);
    }
    private static function checkDomains($value)
    {
        if (array_key_exists('domains', $value) && is_array($value['domains']) && !empty($value['domains']))
        {
            foreach ($value['domains'] as $url)
            {
                if(!static::checkUrl($url))
                {
                    return false;
                }
            }
            return true;
        }
        return false;
 
    }
 
    static function prepareValue($value)
    {
        if(is_array($value) && array_key_exists('domains', $value) && is_array($value['domains']))
        {
            $value['domains'] = array_values(array_filter($value['domains']));
        }
        return parent::prepareValue($value);
    }
 
    protected static function checkValueFields($value): bool
    {
        return static::checkDomains($value);
    }

    static function available(): bool
    {
        return true;
    }

    static function required(): bool
    {
        return false;
    }
 
    protected static function getFields() : array
    {
        return array_merge(parent::getFields(),['domains']);
    }
}