/**
* Round discount amounts and bound them to the total row price
*
* @param Mage_Sales_Model_Quote_Item_Abstract $item
* @param string $currencyCode
* @param string $baseCurrencyCode
*
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
protected function fixDiscounts(Mage_Sales_Model_Quote_Item_Abstract $item, $currencyCode, $baseCurrencyCode)
{
// Get discount amounts
$itemDiscountAmount = $item->getDiscountAmount();
$itemOriginalDiscountAmount = $item->getOriginalDiscountAmount();
$itemBaseDiscountAmount = $item->getBaseDiscountAmount();
$itemBaseOriginalDiscountAmount = $item->getBaseOriginalDiscountAmount();
// Round discount amounts
$itemDiscountAmount = $this->round($itemDiscountAmount, $currencyCode);
$itemOriginalDiscountAmount = $this->round($itemOriginalDiscountAmount, $currencyCode);
$itemBaseDiscountAmount = $this->round($itemBaseDiscountAmount, $baseCurrencyCode);
$itemBaseOriginalDiscountAmount = $this->round($itemBaseOriginalDiscountAmount, $baseCurrencyCode);
// Get item unit prices
$itemPrice = $this->getItemPrice($item);
$baseItemPrice = $this->getItemBasePrice($item);
$itemOriginalPrice = $this->getItemOriginalPrice($item);
$baseItemOriginalPrice = $this->getItemBaseOriginalPrice($item);
// Discount cannot exceed row total
$itemDiscountAmount = min($itemDiscountAmount, $itemPrice * $item->getQty());
$itemOriginalDiscountAmount = min($itemOriginalDiscountAmount, $itemOriginalPrice * $item->getQty());
$itemBaseDiscountAmount = min($itemBaseDiscountAmount, $baseItemPrice * $item->getQty());
$itemBaseOriginalDiscountAmount = min($itemBaseOriginalDiscountAmount, $baseItemOriginalPrice * $item->getQty());
// Save fixed discount amounts
$item->setDiscountAmount($itemDiscountAmount);
$item->setOriginalDiscountAmount($itemOriginalDiscountAmount);
$item->setBaseDiscountAmount($itemBaseDiscountAmount);
$item->setBaseOriginalDiscountAmount($itemBaseOriginalDiscountAmount);
return $item;
}
/**
* Aggregate row totals per tax rate in array
*
* @param Mage_Sales_Model_Quote_Item_Abstract $item
* @param float $rate
* @param array $taxGroups
* @return Mage_Tax_Model_Sales_Total_Quote
*/
protected function _aggregateTaxPerRate($item, $rate, &$taxGroups)
{
$inclTax = $item->getIsPriceInclTax();
$rateKey = (string) $rate;
$taxSubtotal = $subtotal = $item->getTaxableAmount() + $item->getExtraRowTaxableAmount();
$baseTaxSubtotal = $baseSubtotal = $item->getBaseTaxableAmount() + $item->getBaseExtraRowTaxableAmount();
$item->setTaxPercent($rate);
if (!isset($taxGroups[$rateKey]['totals'])) {
$taxGroups[$rateKey]['totals'] = array();
$taxGroups[$rateKey]['base_totals'] = array();
}
$hiddenTax = null;
$baseHiddenTax = null;
switch ($this->_helper->getCalculationSequence($this->_store)) {
case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_EXCL:
case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_INCL:
$rowTax = $this->_calculator->calcTaxAmount($subtotal, $rate, $inclTax, false);
$baseRowTax = $this->_calculator->calcTaxAmount($baseSubtotal, $rate, $inclTax, false);
break;
case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_EXCL:
case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_INCL:
if ($this->_helper->applyTaxOnOriginalPrice($this->_store)) {
$discount = $item->getOriginalDiscountAmount();
$baseDiscount = $item->getBaseOriginalDiscountAmount();
} else {
$discount = $item->getDiscountAmount();
$baseDiscount = $item->getBaseDiscountAmount();
}
$taxSubtotal = max($subtotal - $discount, 0);
$baseTaxSubtotal = max($baseSubtotal - $baseDiscount, 0);
$rowTax = $this->_calculator->calcTaxAmount($taxSubtotal, $rate, $inclTax, false);
$baseRowTax = $this->_calculator->calcTaxAmount($baseTaxSubtotal, $rate, $inclTax, false);
if ($inclTax && $discount > 0) {
$hiddenTax = $this->_calculator->calcTaxAmount($discount, $rate, $inclTax, false);
$baseHiddenTax = $this->_calculator->calcTaxAmount($baseDiscount, $rate, $inclTax, false);
$this->_hiddenTaxes[] = array('rate_key' => $rateKey, 'qty' => 1, 'item' => $item, 'value' => $hiddenTax, 'base_value' => $baseHiddenTax, 'incl_tax' => $inclTax);
}
break;
}
$rowTax = $this->_deltaRound($rowTax, $rateKey, $inclTax);
$baseRowTax = $this->_deltaRound($baseRowTax, $rateKey, $inclTax, 'base');
$item->setTaxAmount(max(0, $rowTax));
$item->setBaseTaxAmount(max(0, $baseRowTax));
$taxGroups[$rateKey]['totals'][] = max(0, $taxSubtotal);
$taxGroups[$rateKey]['base_totals'][] = max(0, $baseTaxSubtotal);
return $this;
}
/**
* Aggregate row totals per tax rate in array
*
* @param Mage_Sales_Model_Quote_Item_Abstract $item
* @param float $rate
* @param array $taxGroups
* @return Mage_Tax_Model_Sales_Total_Quote
*/
protected function _aggregateTaxPerRate($item, $rate, &$taxGroups)
{
$inclTax = $item->getIsPriceInclTax();
$rateKey = (string) $rate;
$taxSubtotal = $subtotal = $item->getTaxableAmount();
$baseTaxSubtotal = $baseSubtotal = $item->getBaseTaxableAmount();
$isWeeeEnabled = $this->_weeeHelper->isEnabled();
$isWeeeTaxable = $this->_weeeHelper->isTaxable();
$item->setTaxPercent($rate);
if (!isset($taxGroups[$rateKey]['totals'])) {
$taxGroups[$rateKey]['totals'] = array();
$taxGroups[$rateKey]['base_totals'] = array();
$taxGroups[$rateKey]['weee_tax'] = array();
$taxGroups[$rateKey]['base_weee_tax'] = array();
}
$hiddenTax = null;
$baseHiddenTax = null;
switch ($this->_helper->getCalculationSequence($this->_store)) {
case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_EXCL:
case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_INCL:
$rowTax = $this->_calculator->calcTaxAmount($subtotal, $rate, $inclTax, false);
$baseRowTax = $this->_calculator->calcTaxAmount($baseSubtotal, $rate, $inclTax, false);
if ($isWeeeEnabled && $isWeeeTaxable) {
$weeeTax = $item->getWeeeTaxAppliedRowAmount() * $rate / 100;
$baseWeeeTax = $item->getBaseWeeeTaxAppliedRowAmount() * $rate / 100;
$rowTax += $weeeTax;
$baseRowTax += $baseWeeeTax;
$taxGroups[$rateKey]['weee_tax'][] = $this->_deltaRound($weeeTax, $rateKey, $inclTax);
$taxGroups[$rateKey]['base_weee_tax'][] = $this->_deltaRound($baseWeeeTax, $rateKey, $inclTax);
}
break;
case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_EXCL:
case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_INCL:
if ($this->_helper->applyTaxOnOriginalPrice($this->_store)) {
$discount = $item->getOriginalDiscountAmount();
$baseDiscount = $item->getBaseOriginalDiscountAmount();
} else {
$discount = $item->getDiscountAmount();
$baseDiscount = $item->getBaseDiscountAmount();
}
//weee discount should be removed when calculating hidden tax
if ($isWeeeEnabled) {
$discount = $discount - $item->getWeeeDiscount();
$baseDiscount = $baseDiscount - $item->getBaseWeeeDiscount();
}
$taxSubtotal = max($subtotal - $discount, 0);
$baseTaxSubtotal = max($baseSubtotal - $baseDiscount, 0);
$rowTax = $this->_calculator->calcTaxAmount($taxSubtotal, $rate, $inclTax, false);
$baseRowTax = $this->_calculator->calcTaxAmount($baseTaxSubtotal, $rate, $inclTax, false);
if ($isWeeeEnabled && $this->_weeeHelper->isTaxable()) {
$weeeTax = ($item->getWeeeTaxAppliedRowAmount() - $item->getWeeeDiscount()) * $rate / 100;
$rowTax += $weeeTax;
$baseWeeeTax = ($item->getBaseWeeeTaxAppliedRowAmount() - $item->getBaseWeeeDiscount()) * $rate / 100;
$baseRowTax += $baseWeeeTax;
$taxGroups[$rateKey]['weee_tax'][] = $weeeTax;
$taxGroups[$rateKey]['base_weee_tax'][] = $baseWeeeTax;
}
if (!$item->getNoDiscount() && $item->getWeeeTaxApplied()) {
$rowTaxBeforeDiscount = $this->_calculator->calcTaxAmount($subtotal, $rate, $inclTax, false);
$baseRowTaxBeforeDiscount = $this->_calculator->calcTaxAmount($baseSubtotal, $rate, $inclTax, false);
if ($isWeeeTaxable) {
$rowTaxBeforeDiscount += $item->getWeeeTaxAppliedRowAmount() * $rate / 100;
$baseRowTaxBeforeDiscount += $item->getBaseWeeeTaxAppliedRowAmount() * $rate / 100;
}
}
if ($inclTax && $discount > 0) {
$hiddenTax = $this->_calculator->calcTaxAmount($discount, $rate, $inclTax, false);
$baseHiddenTax = $this->_calculator->calcTaxAmount($baseDiscount, $rate, $inclTax, false);
$this->_hiddenTaxes[] = array('rate_key' => $rateKey, 'qty' => 1, 'item' => $item, 'value' => $hiddenTax, 'base_value' => $baseHiddenTax, 'incl_tax' => $inclTax);
}
break;
}
$rowTax = $this->_deltaRound($rowTax, $rateKey, $inclTax);
$baseRowTax = $this->_deltaRound($baseRowTax, $rateKey, $inclTax, 'base');
$item->setTaxAmount(max(0, $rowTax));
$item->setBaseTaxAmount(max(0, $baseRowTax));
if (isset($rowTaxBeforeDiscount) && isset($baseRowTaxBeforeDiscount)) {
$taxBeforeDiscount = max(0, $this->_deltaRound($rowTaxBeforeDiscount, $rateKey, $inclTax, 'tax_before_discount'));
$baseTaxBeforeDiscount = max(0, $this->_deltaRound($baseRowTaxBeforeDiscount, $rateKey, $inclTax, 'tax_before_discount_base'));
$item->setDiscountTaxCompensation($taxBeforeDiscount - max(0, $rowTax));
$item->setBaseDiscountTaxCompensation($baseTaxBeforeDiscount - max(0, $baseRowTax));
}
$rowTotalInclTax = $item->getRowTotalInclTax();
if (!isset($rowTotalInclTax)) {
$weeeTaxBeforeDiscount = 0;
$baseWeeeTaxBeforeDiscount = 0;
if ($isWeeeTaxable) {
$weeeTaxBeforeDiscount = $item->getWeeeTaxAppliedRowAmount() * $rate / 100;
$baseWeeeTaxBeforeDiscount = $item->getBaseWeeeTaxAppliedRowAmount() * $rate / 100;
}
if ($this->_config->priceIncludesTax($this->_store)) {
$item->setRowTotalInclTax($subtotal + $weeeTaxBeforeDiscount);
$item->setBaseRowTotalInclTax($baseSubtotal + $baseWeeeTaxBeforeDiscount);
} else {
$taxCompensation = $item->getDiscountTaxCompensation() ? $item->getDiscountTaxCompensation() : 0;
$item->setRowTotalInclTax($subtotal + $rowTax + $taxCompensation);
$item->setBaseRowTotalInclTax($baseSubtotal + $baseRowTax + $item->getBaseDiscountTaxCompensation());
}
}
$taxGroups[$rateKey]['totals'][] = max(0, $taxSubtotal);
$taxGroups[$rateKey]['base_totals'][] = max(0, $baseTaxSubtotal);
return $this;
}
