/**
* @param Product $product
* @param Quantity $quantity
* @return Order
*/
public function addProduct(Product $product, Quantity $quantity) : Order
{
if (!$product->isAvailable()) {
throw new \RuntimeException(sprintf('Product #%s is not available', $product->getId()));
}
$lineItem = new LineItem($product, $this, $quantity);
$this->lineItems->add($lineItem);
return $this;
}
/**
* @param LineItem $item
*
* @return $this
*/
public function addLineItem(LineItem $item)
{
if (!$this->lineItems->contains($item)) {
$item->setShoppingList($this);
$this->lineItems->add($item);
}
return $this;
}
