public function updateOfferFromCart(OnlineShop_OfferTool_AbstractOffer $offer, OnlineShop_Framework_ICart $cart, array $excludeItems = array(), $save = true)
{
$excludedItemKeys = $this->getExcludedItemKeys($excludeItems);
if ($cart->getId() != $offer->getCartId()) {
throw new Exception("Cart does not match to the offer given, update is not possible");
}
//Update existing offer items
$offerItems = $offer->getItems();
$newOfferItems = array();
foreach ($offerItems as $offerItem) {
$cartItem = $cart->getItem($offerItem->getCartItemKey());
if ($cartItem && !$excludedItemKeys[$offerItem->getCartItemKey()]) {
$newOfferItems[$offerItem->getCartItemKey()] = $this->updateOfferItem($cartItem, $offerItem);
}
}
//Add non existing cart items to offer
$cartItems = $cart->getItems();
foreach ($cartItems as $cartItem) {
if (!$newOfferItems[$cartItem->getItemKey()] && !$excludedItemKeys[$cartItem->getItemKey()]) {
$offerItem = $this->createOfferItem($cartItem, $offer);
$newOfferItems[$offerItem->getCartItemKey()] = $offerItem;
}
}
//Delete offer items which are not needed any more
foreach ($offerItems as $offerItem) {
if (!$newOfferItems[$offerItem->getCartItemKey()]) {
$offerItem->delete();
}
}
$offer->setItems($newOfferItems);
//Update total price
$offer = $this->updateTotalPriceOfOffer($offer);
if ($save) {
$offer->save();
}
return $offer;
}
