pagecard.php

См. документацию.

<?php
 
namespace Bitrix\Seo\BusinessSuite\Configuration\Facebook\Fields\Config;
 
final class PageCard extends AbstractConfigField
{
 
    const BUTTON_TEXT_BOOK = 'Book';
    const SEE_ALL_TEXT = 'see_all_text';
 
    private static function checkButtonText($value) : bool
    {
        return array_key_exists('cta_button_text',$value) && in_array($value['cta_button_text'],[
                static::BUTTON_TEXT_BOOK,
            ]);
    }
    private static function checkSeeAllText($value) : bool
    {
        return array_key_exists('see_all_text',$value) && in_array($value['see_all_text'],[
                static::SEE_ALL_TEXT
            ]);
 
    }
    private static function checkUrl($value) : bool
    {
        return array_key_exists('see_all_url',$value) &&
            is_string($value['see_all_url']) &&
            preg_match(static::URL_PATTERN,$value['see_all_url']);
    }
 
    protected static function checkValueFields($value): bool
    {
        return static::checkButtonText($value) && static::checkSeeAllText($value) && static::checkUrl($value);
    }
 
    protected static function setDefaultFields($value)
    {
        $value['see_all_text'] = static::SEE_ALL_TEXT;
        $value['cta_button_text'] = static::BUTTON_TEXT_BOOK;
        return $value;
    }

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

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