/**
* @return Double
**/
protected function LiveCalculatedTotal()
{
//________________ start caching mechanism
if (self::$calculations_done) {
return self::$actual_charges;
}
self::$calculations_done = true;
//________________ end caching mechanism
self::$actual_charges = 0;
//do we have enough information
$obj = $this->liveOptionObject();
if ($items = $this->Order()->Items() && is_object($obj) && $obj->exists()) {
$this->debugMessage .= "<hr />option selected: " . $obj->Title . ", and items present";
//lets check sub-total
$subTotalAmount = $this->LiveSubTotalAmount();
$this->debugMessage .= "<hr />sub total amount is: \$" . $subTotalAmount;
// no need to charge, order is big enough
$minForZeroRate = floatval($obj->MinimumOrderAmountForZeroRate);
$maxForZeroRate = floatval($obj->FreeShippingUpToThisOrderAmount);
if ($minForZeroRate > 0 && $minForZeroRate < $subTotalAmount) {
self::$actual_charges = 0;
$this->debugMessage .= "<hr />Minimum Order Amount For Zero Rate: " . $obj->MinimumOrderAmountForZeroRate . " is lower than amount ordered" . self::$actual_charges;
} elseif ($maxForZeroRate > 0 && $maxForZeroRate > $subTotalAmount) {
self::$actual_charges = 0;
$this->debugMessage .= "<hr />Maximum Order Amount For Zero Rate: " . $obj->FreeShippingUpToThisOrderAmount . " is higher than amount ordered" . self::$actual_charges;
} else {
$weight = $this->LiveTotalWeight();
if ($weight) {
$this->debugMessage .= "<hr />there is weight: {$weight}gr.";
//weight brackets
$weightBrackets = $obj->WeightBrackets();
$foundWeightBracket = null;
$weightBracketQuantity = 1;
$additionalWeightBracket = null;
if ($weightBrackets && $weightBrackets->Count()) {
$minimumMinimum = null;
$maximumMaximum = null;
foreach ($weightBrackets as $weightBracket) {
if (!$foundWeightBracket && $weightBracket->MinimumWeight <= $weight && $weight <= $weightBracket->MaximumWeight) {
$foundWeightBracket = $weightBracket;
}
//look for absolute min and max
if ($minimumMinimum == null || $weightBracket->MinimumWeight > $minimumMinimum->MinimumWeight) {
$minimumMinimum = $weightBracket;
}
if ($maximumMaximum == null || $weightBracket->MaximumWeight > $maximumMaximum->MaximumWeight) {
$maximumMaximum = $weightBracket;
}
}
if (!$foundWeightBracket) {
if ($weight < $minimumMinimum->MinimumWeight) {
$foundWeightBracket = $minimumMinimum;
} elseif ($weight > $maximumMaximum->MaximumWeight) {
$foundWeightBracket = $maximumMaximum;
$weightBracketQuantity = floor($weight / $maximumMaximum->MaximumWeight);
$restWeight = $weight - $maximumMaximum->MaximumWeight * $weightBracketQuantity;
$additionalWeightBracket = null;
foreach ($weightBrackets as $weightBracket) {
if ($weightBracket->MinimumWeight <= $restWeight && $restWeight <= $weightBracket->MaximumWeight) {
$additionalWeightBracket = $weightBracket;
break;
}
}
}
}
}
//we found some applicable weight brackets
if ($foundWeightBracket) {
self::$actual_charges += $foundWeightBracket->FixedCost * $weightBracketQuantity;
$this->debugMessage .= "<hr />found Weight Bracket (from {$foundWeightBracket->MinimumWeight}gr. to {$foundWeightBracket->MaximumWeight}gr.): \${$foundWeightBracket->FixedCost} ({$foundWeightBracket->Name}) from times {$weightBracketQuantity}";
if ($additionalWeightBracket) {
self::$actual_charges += $additionalWeightBracket->FixedCost;
$this->debugMessage .= "<hr />+ additional Weight Bracket (from {$additionalWeightBracket->MinimumWeight}gr. to {$additionalWeightBracket->MaximumWeight}gr.): \${$additionalWeightBracket->FixedCost} ({$foundWeightBracket->Name})";
}
} elseif ($weight && $obj->WeightMultiplier) {
// add weight based shipping
if (!$obj->WeightUnit) {
$obj->WeightUnit = 1;
}
$this->debugMessage .= "<hr />actual weight:" . $weight . " multiplier = " . $obj->WeightMultiplier . " weight unit = " . $obj->WeightUnit . " ";
//legacy fix
$units = ceil($weight / $obj->WeightUnit);
$weightCharge = $units * $obj->WeightMultiplier;
self::$actual_charges += $weightCharge;
$this->debugMessage .= "<hr />weight charge: " . $weightCharge;
}
}
// add percentage
if ($obj->Percentage) {
$percentageCharge = $subTotalAmount * $obj->Percentage;
self::$actual_charges += $percentageCharge;
$this->debugMessage .= "<hr />percentage charge: \$" . $percentageCharge;
}
// add fixed price
if ($obj->FixedCost != 0) {
self::$actual_charges += $obj->FixedCost;
$this->debugMessage .= "<hr />fixed charge: \$" . $obj->FixedCost;
}
//is it enough?
if (self::$actual_charges < $obj->MinimumDeliveryCharge && $obj->MinimumDeliveryCharge > 0) {
$oldActualCharge = self::$actual_charges;
self::$actual_charges = $obj->MinimumDeliveryCharge;
$this->debugMessage .= "<hr />too little: actual charge: " . $oldActualCharge . ", minimum delivery charge: " . $obj->MinimumDeliveryCharge;
}
// is it too much
if (self::$actual_charges > $obj->MaximumDeliveryCharge && $obj->MaximumDeliveryCharge > 0) {
self::$actual_charges = $obj->MaximumDeliveryCharge;
$this->debugMessage .= "<hr />too much: " . self::$actual_charges . ", maximum delivery charge is " . $obj->MaximumDeliveryCharge;
}
}
} else {
if (!$items) {
$this->debugMessage .= "<hr />no items present";
} else {
$this->debugMessage .= "<hr />no delivery option available";
}
}
$this->debugMessage .= "<hr />final score: \$" . self::$actual_charges;
//special case, we are using weight and there is no weight!
return self::$actual_charges;
}
