/**
* @return null
*/
private function getConditionFromCart()
{
$condition = null;
if ($this->isFree($this->cart->getGross())) {
return 0.0;
}
switch ($this->getExtraType()) {
case 'by_price':
$condition = $this->cart->getGross();
break;
case 'by_quantity':
$condition = $this->cart->getCount();
break;
case 'by_service_attribute_1_sum':
$condition = $this->cart->getSumServiceAttribute1();
break;
case 'by_service_attribute_1_max':
$condition = $this->cart->getMaxServiceAttribute1();
break;
case 'by_service_attribute_2_sum':
$condition = $this->cart->getSumServiceAttribute2();
break;
case 'by_service_attribute_2_max':
$condition = $this->cart->getMaxServiceAttribute2();
break;
case 'by_service_attribute_3_sum':
$condition = $this->cart->getSumServiceAttribute3();
break;
case 'by_service_attribute_3_max':
$condition = $this->cart->getMaxServiceAttribute3();
break;
default:
}
return $condition;
}
