percentprice.php

См. документацию.

<?php
 
namespace Bitrix\Sale\Services\PaySystem\Restrictions;
 
use Bitrix\Main\Localization\Loc;
use Bitrix\Sale\PriceMaths;
 
Loc::loadMessages(__FILE__);
 
class PercentPrice extends Price
{
    protected static function getPrice($entityParams, $paramValue)
    {
        $percent = (float)$paramValue / 100;
        $price = (float)$entityParams['PRICE_ORDER'] * $percent;
 
        return PriceMaths::roundPrecision($price);
    }

    public static function getClassTitle()
    {
        return Loc::getMessage('SALE_PS_RESTRICTIONS_BY_PERCENT_PRICE');
    }

    public static function getClassDescription()
    {
        return Loc::getMessage('SALE_PS_RESTRICTIONS_BY_PERCENT_PRICE_DESC');
    }
 
    public static function getOnApplyErrorMessage(): string
    {
        return Loc::getMessage('SALE_PS_RESTRICTIONS_BY_PERCENT_PRICE_ON_APPLY_ERROR_MSG');
    }

    public static function getParamsStructure($entityId = 0)
    {
        return array(
            "MIN_VALUE" => array(
                'TYPE' => 'NUMBER',
                'DEFAULT' => 0,
                'LABEL' => Loc::getMessage("SALE_PS_RESTRICTIONS_BY_PRICE_PERCENT_TYPE_MORE")
            ),
            "MAX_VALUE" => array(
                'TYPE' => 'NUMBER',
                'DEFAULT' => 0,
                'LABEL' => Loc::getMessage("SALE_PS_RESTRICTIONS_BY_PRICE_PERCENT_TYPE_LESS")
            )
        );
    }
}