public function applyRule(ISC_QUOTE $quote)
{
$applies = false;
$items = $quote->getItems();
foreach($items as $item) {
// Skip items that have a parent ID or don't match the product ID necessary
if($item->getParentId() || $item->getProductId() != $this->prodids) {
continue;
}
$quantity = $item->getQuantity();
$freeItems = 0;
while ($quantity >= $this->amount) {
$quantity = $quantity - $this->amount;
$freeItems += $this->amount_free;
}
foreach($items as $subItem) {
// If the product already exists in the cart, then we can update it instead
if($subItem->getParentId() != $item->getId()) {
continue;
}
if($freeItems == 0) {
$quote->removeItem($subItem->getId());
}
else {
try {
$subItem->setQuantity($freeItems);
}
catch(ISC_QUOTE_EXCEPTION $e) {
$freeItems = 0;
continue;
}
$this->banners[] = sprintf(getLang($this->getName().'DiscountMessage'), $freeItems, $subItem->getName());
$freeItems = 0;
$applies = true;
}
}
if($freeItems > 0) {
// Still need to add a free item to the cart
try {
$newItem = clone $item;
$newItem
->setBasePrice(0, true)
->setQuantity($freeItems)
->setParentId($item->getId())
->removeGiftWrapping();
$quote->addItem($newItem, false);
$this->banners[] = sprintf(getLang($this->getName().'DiscountMessage'), $freeItems, $item->getName());
$applies = true;
}
catch(ISC_QUOTE_EXCEPTION $e) {
$applies = false;
continue;
}
}
}
return $applies;
}
