/**
* @param Product $product
*
* @return bool
*/
private function productExists(Product $product)
{
return $this->findBy(['title' => $product->title()]);
}
/**
* @param Product $product
*/
public function addProduct(Product $product)
{
if (!isset($this->products[$product->title()])) {
$this->products[$product->title()] = $product;
}
}
/**
* @param Product $product
*
* @throws ProductAlreadyExistsException
*/
private function assertProductDoesNotExists(Product $product)
{
$products = $this->products();
foreach ($products as $existingProduct) {
if ($existingProduct->id() === $product->id()) {
throw new ProductAlreadyExistsException(sprintf('Product with id: %s already exists', $product->id()));
}
}
}
