updateproductpricesaction.php

См. документацию.

<?php
 
namespace Bitrix\Catalog\Document\Action\Price;
 
use Bitrix\Catalog\Document\Action;
use Bitrix\Catalog\Model\Price;
use Bitrix\Catalog\Model\Product;
use Bitrix\Catalog\GroupTable;
use Bitrix\Catalog\PriceTable;
use Bitrix\Currency\CurrencyManager;
use Bitrix\Main\Loader;
use Bitrix\Main\Result;

class UpdateProductPricesAction implements Action
{
    private int $productId;
    private ?float $purchasePrice;
    private ?string $purchasePriceCurrency;
    private ?float $basePrice;
    private ?string $basePriceCurrency;

    public function __construct(
        int $productId,
        ?float $purchasePrice,
        ?string $purchasePriceCurrency,
        ?float $basePrice = null,
        ?string $basePriceCurrency = null
    )
    {
        $this->productId = $productId;
        $this->purchasePrice = $purchasePrice;
        $this->purchasePriceCurrency = $purchasePriceCurrency;
        $this->basePrice = $basePrice;
        $this->basePriceCurrency = $basePriceCurrency;
    }

    private function getDefaultCurrency(): string
    {
        static $currency;
 
        if ($currency)
        {
            return $currency;
        }
        elseif (Loader::includeModule('currency'))
        {
            $currency = CurrencyManager::getBaseCurrency();
        }
        else
        {
            $currency = LANGUAGE_ID === 'ru' ? 'RUB' : 'EUR';
        }
 
        return $currency;
    }

    private function getBasePriceRowId(): ?int
    {
        $row = PriceTable::getRow([
            'select' => [
                'ID',
            ],
            'filter' => [
                '=PRODUCT_ID' => $this->productId,
                '=CATALOG_GROUP_ID' => $this->getBasePriceGroupId(),
            ],
            'order' => [
                'ID' => 'asc',
            ],
        ]);
        return $row['ID'] ?? null;
    }

    private function getBasePriceGroupId(): ?int
    {
        return GroupTable::getBasePriceTypeId();
    }

    public function canExecute(): Result
    {
        return new Result();
    }

    public function execute(): Result
    {
        $result = new Result();
 
        if (isset($this->purchasePrice))
        {
            $saveResult = Product::update($this->productId, [
                'PURCHASING_PRICE' => $this->purchasePrice ?: null, // if price is 0.0 - clear value
                'PURCHASING_CURRENCY' => $this->purchasePriceCurrency ?? $this->getDefaultCurrency(),
            ]);
            if (!$saveResult->isSuccess())
            {
                $result->addErrors(
                    $saveResult->getErrors()
                );
            }
        }
 
        if (isset($this->basePrice))
        {
            $basePriceRowId = $this->getBasePriceRowId();
            if ($basePriceRowId)
            {
                $saveResult = Price::update($basePriceRowId, [
                    'PRICE' => $this->basePrice,
                    'CURRENCY' => $this->basePriceCurrency,
                ]);
            }
            else
            {
                $saveResult = Price::add([
                    'PRODUCT_ID' => $this->productId,
                    'CATALOG_GROUP_ID' => $this->getBasePriceGroupId(),
                    'PRICE' => $this->basePrice,
                    'CURRENCY' => $this->basePriceCurrency ?? $this->getDefaultCurrency(),
                ]);
            }
 
            if (!$saveResult->isSuccess())
            {
                $result->addErrors(
                    $saveResult->getErrors()
                );
            }
        }
 
        return $result;
    }
}