/**
* @inheritdoc
*/
public function exec()
{
$discount = 0;
$cartItems = $this->facade->getCart()->getCartItems();
/** @var Product $eligibleProduct */
$eligibleProduct = null;
/** @var CartItem $cartItem */
foreach ($cartItems as $cartItem) {
if (in_array($cartItem->getProduct()->getId(), $this->product_list)) {
if (!$cartItem->getPromo() || $this->isAvailableOnSpecialOffers()) {
$eligibleProduct = $cartItem;
break;
}
}
}
if ($eligibleProduct !== null) {
// Get the cart item for the eligible product
$freeProductCartItem = $this->getRelatedCartItem($eligibleProduct);
// We add the free product it only if it not yet in the cart.
if ($freeProductCartItem === false) {
if (null !== ($freeProduct = ProductQuery::create()->findPk($this->offeredProductId))) {
// Store in the session that the free product is added to the cart,
// so that we don't enter the following infinite loop :
//
// 1) exec() adds a product by firing a CART_ADDITEM event,
// 2) the event is processed by Action\Coupon::updateOrderDiscount(),
// 3) Action\Coupon::updateOrderDiscount() calls CouponManager::getDiscount()
// 4) CouponManager::getDiscount() calls exec() -> Infinite loop !!
// Store a marker first, we do not have the cart item id yet.
$this->setRelatedCartItem($eligibleProduct, self::ADD_TO_CART_IN_PROCESS);
$cartEvent = new CartEvent($this->facade->getCart());
$cartEvent->setNewness(true);
$cartEvent->setAppend(false);
$cartEvent->setQuantity(1);
$cartEvent->setProductSaleElementsId($freeProduct->getDefaultSaleElements()->getId());
$cartEvent->setProduct($this->offeredProductId);
$this->facade->getDispatcher()->dispatch(TheliaEvents::CART_ADDITEM, $cartEvent);
// Store the final cart item ID.
$this->setRelatedCartItem($eligibleProduct, $cartEvent->getCartItem()->getId());
$freeProductCartItem = $cartEvent->getCartItem();
}
}
if ($freeProductCartItem instanceof CartItem) {
// The discount is the product price.
$discount = $freeProductCartItem->getPromo() ? $freeProductCartItem->getPromoPrice() : $freeProductCartItem->getPrice();
}
} else {
// Remove all free products for this coupon, but no not remove the product from the cart.
$this->clearFreeProductsCartItemIds();
}
return $discount;
}
