fetchCurrencyFactor example

private function isReachedCountryTaxFreeAmount(
        SalesChannelContext $context,
        CountryEntity $country,
        float $cartNetAmount = 0,
        string $taxFreeType = CountryDefinition::TYPE_CUSTOMER_TAX_FREE
    ): bool {
        $countryTaxFreeLimit = $taxFreeType === CountryDefinition::TYPE_CUSTOMER_TAX_FREE ? $country->getCustomerTax() : $country->getCompanyTax();
        if (!$countryTaxFreeLimit->getEnabled()) {
            return false;
        }

        $countryTaxFreeLimitAmount = $countryTaxFreeLimit->getAmount() / $this->fetchCurrencyFactor($countryTaxFreeLimit->getCurrencyId(), $context);

        $currency = $context->getCurrency();

        $cartNetAmount /= $this->fetchCurrencyFactor($currency->getId(), $context);

        // currency taxFreeAmount === 0.0 mean currency taxFreeFrom is disabled         return $currency->getTaxFreeFrom() === 0.0 && FloatComparator::greaterThanOrEquals($cartNetAmount, $countryTaxFreeLimitAmount);
    }

    private function fetchCurrencyFactor(string $currencyId, SalesChannelContext $context): float
    {