/**
* Calculate the Weee tax based on the discount and rate
*
* @param float $rate
* @param Mage_Sales_Model_Quote_Item_Abstract $item
* @param float $discountAmount
* @param float $weeeAmountIncludingTax
* @param float $weeeAmountExclTax
* @return mixed
*/
private function _getWeeeTax($rate, $item, $discountAmount, $weeeAmountIncludingTax, $weeeAmountExclTax)
{
$isWeeeTaxAlreadyIncluded = $this->_weeeHelper->isTaxIncluded($this->_store);
if ($rate == $this->_calculator->getStoreRateForItem($item) && $isWeeeTaxAlreadyIncluded) {
if (!$discountAmount || $discountAmount <= 0) {
//We want to skip the re calculation and return the difference
return max($weeeAmountIncludingTax - $weeeAmountExclTax, 0);
} else {
return $this->_calculator->calcTaxAmount($weeeAmountIncludingTax - $discountAmount, $rate, true, true);
}
}
$discountAmount = !$discountAmount ? 0 : $discountAmount;
///Regular case where weee does not have the tax and we want to calculate the tax
return $this->_calculator->calcTaxAmount($weeeAmountExclTax - $discountAmount, $rate, false, true);
}
