/**
* Retrieve customer email
*
* @param OnePica_AvaTax_Model_Sales_Quote_Address|Mage_Sales_Model_Order $object
* @param Mage_Customer_Model_Customer $customer
* @return string
*/
protected function _getCustomerEmail($object, $customer)
{
$email = null;
if ($object instanceof OnePica_AvaTax_Model_Sales_Quote_Address) {
$email = $object->getEmail();
if (!$email) {
// get email from billing in case the $object is shipping address
$email = $object->getQuote()->getBillingAddress() ? $object->getQuote()->getBillingAddress()->getEmail() : null;
}
} elseif ($object instanceof Mage_Sales_Model_Order) {
$email = $object->getCustomerEmail();
}
if (!$email) {
$email = $customer->getEmail();
}
return $email;
}
