/**
* Tax caclulation for shipping price
*
* @param Mage_Sales_Model_Quote_Address $address
* @param Varien_Object $taxRateRequest
* @return Mage_Tax_Model_Sales_Total_Quote
*/
protected function _calculateShippingTax(Mage_Sales_Model_Quote_Address $address, $taxRateRequest)
{
$taxRateRequest->setProductClassId($this->_config->getShippingTaxClass($this->_store));
$rate = $this->_calculator->getRate($taxRateRequest);
$inclTax = $address->getIsShippingInclTax();
$shipping = $address->getShippingTaxable();
$baseShipping = $address->getBaseShippingTaxable();
$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:
$tax = $this->_calculator->calcTaxAmount($shipping, $rate, $inclTax, false);
$baseTax = $this->_calculator->calcTaxAmount($baseShipping, $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:
$discountAmount = $address->getShippingDiscountAmount();
$baseDiscountAmount = $address->getBaseShippingDiscountAmount();
$tax = $this->_calculator->calcTaxAmount($shipping - $discountAmount, $rate, $inclTax, false);
$baseTax = $this->_calculator->calcTaxAmount($baseShipping - $baseDiscountAmount, $rate, $inclTax, false);
break;
}
if ($this->_config->getAlgorithm($this->_store) == Mage_Tax_Model_Calculation::CALC_TOTAL_BASE) {
$tax = $this->_deltaRound($tax, $rate, $inclTax);
$baseTax = $this->_deltaRound($baseTax, $rate, $inclTax, 'base');
} else {
$tax = $this->_calculator->round($tax);
$baseTax = $this->_calculator->round($baseTax);
}
if ($inclTax && !empty($discountAmount)) {
$hiddenTax = $shipping - $tax - $address->getShippingAmount();
$baseHiddenTax = $baseShipping - $baseTax - $address->getBaseShippingAmount();
}
$this->_addAmount(max(0, $tax));
$this->_addBaseAmount(max(0, $baseTax));
$address->setShippingTaxAmount(max(0, $tax));
$address->setBaseShippingTaxAmount(max(0, $baseTax));
$address->setShippingHiddenTaxAmount(max(0, $hiddenTax));
$address->setBaseShippingHiddenTaxAmount(max(0, $baseHiddenTax));
$address->addTotalAmount('shipping_hidden_tax', $hiddenTax);
$address->addBaseTotalAmount('shipping_hidden_tax', $baseHiddenTax);
$applied = $this->_calculator->getAppliedRates($taxRateRequest);
$this->_saveAppliedTaxes($address, $applied, $tax, $baseTax, $rate);
return $this;
}
/**
* Caclulate item price and row total with configured rounding level
*
* @param Mage_Sales_Model_Quote_Address $address
* @param Mage_Sales_Model_Quote_Item_Abstract $item
* @return Mage_Tax_Model_Sales_Total_Quote_Subtotal
*/
protected function _processItem($item, $taxRequest)
{
switch ($this->_config->getAlgorithm($this->_store)) {
case Mage_Tax_Model_Calculation::CALC_UNIT_BASE:
$this->_unitBaseCalculation($item, $taxRequest);
break;
case Mage_Tax_Model_Calculation::CALC_ROW_BASE:
$this->_rowBaseCalculation($item, $taxRequest);
break;
case Mage_Tax_Model_Calculation::CALC_TOTAL_BASE:
$this->_totalBaseCalculation($item, $taxRequest);
break;
default:
break;
}
return $this;
}
/**
* Collect tax totals for quote address
*
* @param Mage_Sales_Model_Quote_Address $address
* @return Mage_Tax_Model_Sales_Total_Quote
*/
public function collect(Mage_Sales_Model_Quote_Address $address)
{
parent::collect($address);
$store = $address->getQuote()->getStore();
$customer = $address->getQuote()->getCustomer();
if ($customer) {
$this->_calculator->setCustomer($customer);
}
if (!$address->getAppliedTaxesReset()) {
$address->setAppliedTaxes(array());
}
$items = $address->getAllItems();
if (!count($items)) {
return $this;
}
$request = $this->_calculator->getRateRequest($address, $address->getQuote()->getBillingAddress(), $address->getQuote()->getCustomerTaxClassId(), $store);
$this->_areTaxRequestsSimilar = $this->_calculator->compareRequests($this->_calculator->getRateOriginRequest($address->getQuote()->getStore()), $request);
switch ($this->_config->getAlgorithm($store)) {
case Mage_Tax_Model_Calculation::CALC_UNIT_BASE:
$this->_unitBaseCalculation($address, $request);
break;
case Mage_Tax_Model_Calculation::CALC_ROW_BASE:
$this->_rowBaseCalculation($address, $request);
break;
case Mage_Tax_Model_Calculation::CALC_TOTAL_BASE:
$this->_totalBaseCalculation($address, $request);
break;
default:
break;
}
/**
* Subtract taxes from subtotal amount if prices include tax
*/
if ($this->_usePriceIncludeTax($store)) {
$subtotal = $address->getSubtotalInclTax() - $address->getTotalAmount('tax');
$baseSubtotal = $address->getBaseSubtotalInclTax() - $address->getBaseTotalAmount('tax');
$address->setTotalAmount('subtotal', $subtotal);
$address->setBaseTotalAmount('subtotal', $baseSubtotal);
}
$this->_addAmount($address->getExtraTaxAmount());
$this->_addBaseAmount($address->getBaseExtraTaxAmount());
$this->_calculateShippingTax($address, $request);
return $this;
}
/**
* Calculates the weeeAmountInclTax for display purpose
*
* @param Mage_Sales_Model_Quote_Item_Abstract $item
* @param array $appliedRates
* @param bool $base
*/
protected function _calculateWeeeAmountInclTax($item, $appliedRates, $base = true)
{
foreach ($this->_weeeHelper->getApplied($item) as $tax) {
$weeeAmountInclTax = 0;
$weeeAmountExclTax = 0;
if ($base) {
$weeeAmountInclTax = isset($tax['base_amount_incl_tax']) ? $tax['base_amount_incl_tax'] : 0;
$weeeAmountExclTax = isset($tax['base_amount']) ? $tax['base_amount'] : 0;
$weeeRowAmountInclTax = isset($tax['base_row_amount_incl_tax']) ? $tax['base_row_amount_incl_tax'] : 0;
$weeeRowAmountExclTax = isset($tax['base_row_amount']) ? $tax['base_row_amount'] : 0;
} else {
$weeeAmountInclTax = isset($tax['amount_incl_tax']) ? $tax['amount_incl_tax'] : 0;
$weeeAmountExclTax = isset($tax['amount']) ? $tax['amount'] : 0;
$weeeRowAmountInclTax = isset($tax['row_amount_incl_tax']) ? $tax['row_amount_incl_tax'] : 0;
$weeeRowAmountExclTax = isset($tax['row_amount']) ? $tax['row_amount'] : 0;
}
$weeeTax = array();
$weeeRowTax = array();
foreach ($appliedRates as $appliedRate) {
$rate = $appliedRate['percent'];
$weeeTax[] = $this->_getWeeeTax($rate, $item, 0, $weeeAmountInclTax, $weeeAmountExclTax);
$weeeRowTax[] = $this->_getWeeeTax($rate, $item, 0, $weeeRowAmountInclTax, $weeeRowAmountExclTax);
}
//We want to update the tax calculated on Weee to the Item with out discount for display purpose
$weeeAmountInclTax = array_sum($weeeTax) + $weeeAmountExclTax;
$weeeRowAmountInclTax = array_sum($weeeRowTax) + $weeeRowAmountExclTax;
$calculationMethod = $this->_config->getAlgorithm($this->_store);
if ($calculationMethod == Mage_Tax_Model_Calculation::CALC_UNIT_BASE) {
$weeeRowAmountInclTax = $this->_calculator->round($weeeAmountInclTax * $item->getQty());
} else {
$weeeAmountInclTax = $this->_calculator->round($weeeRowAmountInclTax / $item->getQty());
}
if ($base) {
$this->_weeeHelper->setWeeeTaxesAppliedProperty($item, $tax['title'], 'base_amount_incl_tax', $weeeAmountInclTax);
$this->_weeeHelper->setWeeeTaxesAppliedProperty($item, $tax['title'], 'base_row_amount_incl_tax', $weeeRowAmountInclTax);
} else {
$this->_weeeHelper->setWeeeTaxesAppliedProperty($item, $tax['title'], 'amount_incl_tax', $weeeAmountInclTax);
$this->_weeeHelper->setWeeeTaxesAppliedProperty($item, $tax['title'], 'row_amount_incl_tax', $weeeRowAmountInclTax);
}
}
return;
}
/**
* Recollect item price and row total using after taxes subtract.
* Declare item price including tax attributes
*
* @deprecated after 1.4.1
*
* @param Mage_Sales_Model_Quote_Address $address
* @param Mage_Sales_Model_Quote_Item_Abstract $item
*
* @return Mage_Tax_Model_Sales_Total_Quote_Subtotal
*/
protected function _recollectItem($address, Mage_Sales_Model_Quote_Item_Abstract $item)
{
$store = $address->getQuote()->getStore();
$request = $this->_getStoreTaxRequest($address);
$request->setProductClassId($item->getProduct()->getTaxClassId());
$rate = $this->_calculator->getRate($request);
$qty = $item->getTotalQty();
$price = $taxPrice = $item->getCalculationPriceOriginal();
$basePrice = $baseTaxPrice = $item->getBaseCalculationPriceOriginal();
$subtotal = $taxSubtotal = $item->getRowTotal();
$baseSubtotal = $baseTaxSubtotal = $item->getBaseRowTotal();
if ($this->_config->discountTax($store)) {
$item->setDiscountCalculationPrice($price);
$item->setBaseDiscountCalculationPrice($basePrice);
}
/**
* Use original price for tax calculation
*/
if ($item->hasCustomPrice() && !$this->_helper->applyTaxOnCustomPrice($store)) {
$taxPrice = $item->getOriginalPrice();
$baseTaxPrice = $item->getBaseOriginalPrice();
$taxSubtotal = $taxPrice * $qty;
$baseTaxSubtotal = $baseTaxPrice * $qty;
}
if ($this->_areTaxRequestsSimilar) {
$item->setRowTotalInclTax($subtotal);
$item->setBaseRowTotalInclTax($baseSubtotal);
$item->setPriceInclTax($price);
$item->setBasePriceInclTax($basePrice);
$item->setTaxCalcPrice($taxPrice);
$item->setBaseTaxCalcPrice($baseTaxPrice);
$item->setTaxCalcRowTotal($taxSubtotal);
$item->setBaseTaxCalcRowTotal($baseTaxSubtotal);
}
$this->_subtotalInclTax += $subtotal;
$this->_baseSubtotalInclTax += $baseSubtotal;
if ($this->_config->getAlgorithm($store) == Mage_Tax_Model_Calculation::CALC_UNIT_BASE) {
$taxAmount = $this->_calculator->calcTaxAmount($taxPrice, $rate, true);
$baseTaxAmount = $this->_calculator->calcTaxAmount($baseTaxPrice, $rate, true);
$unitPrice = $this->_calculator->round($price - $taxAmount);
$baseUnitPrice = $this->_calculator->round($basePrice - $baseTaxAmount);
$subtotal = $this->_calculator->round($unitPrice * $qty);
$baseSubtotal = $this->_calculator->round($baseUnitPrice * $qty);
} else {
$taxAmount = $this->_calculator->calcTaxAmount($taxSubtotal, $rate, true, false);
$baseTaxAmount = $this->_calculator->calcTaxAmount($baseTaxSubtotal, $rate, true, false);
$unitPrice = ($subtotal - $taxAmount) / $qty;
$baseUnitPrice = ($baseSubtotal - $baseTaxAmount) / $qty;
$subtotal = $this->_calculator->round($subtotal - $taxAmount);
$baseSubtotal = $this->_calculator->round($baseSubtotal - $baseTaxAmount);
}
if ($item->hasCustomPrice()) {
$item->setCustomPrice($unitPrice);
$item->setBaseCustomPrice($baseUnitPrice);
}
$item->setPrice($baseUnitPrice);
$item->setOriginalPrice($unitPrice);
$item->setBasePrice($baseUnitPrice);
$item->setRowTotal($subtotal);
$item->setBaseRowTotal($baseSubtotal);
return $this;
}
/**
* Get tax calculation algorithm code
*
* @param null|int $store
* @return string
*/
public function getCalculationAgorithm($store = null)
{
return $this->_config->getAlgorithm($store);
}
