/**
* Get VAT class
*
* @param string $customerCountryCode
* @param Varien_Object $vatValidationResult
* @param Mage_Core_Model_Store|string|int|null $store
* @return null|string
*/
public function getCustomerVatClass($customerCountryCode, $vatValidationResult, $store = null)
{
$vatClass = null;
$isVatNumberValid = $vatValidationResult->getIsValid();
if (is_string($customerCountryCode) && !empty($customerCountryCode) && $customerCountryCode === Mage::helper('core')->getMerchantCountryCode($store) && $isVatNumberValid) {
$vatClass = self::VAT_CLASS_DOMESTIC;
} elseif ($isVatNumberValid) {
$vatClass = self::VAT_CLASS_INTRA_UNION;
} else {
$vatClass = self::VAT_CLASS_INVALID;
}
if (!$vatValidationResult->getRequestSuccess()) {
$vatClass = self::VAT_CLASS_ERROR;
}
return $vatClass;
}
