protected function manageCartDuplicationAtCustomerLogin(CartModel $cart, EventDispatcherInterface $dispatcher)
{
/** @var CustomerModel $customer */
if (null !== ($customer = $this->session->getCustomerUser())) {
// Check if we have to duplicate the existing cart.
$duplicateCart = true;
// A customer is logged in.
if (null === $cart->getCustomerId()) {
// If the customer has a discount, whe have to duplicate the cart,
// so that the discount will be applied to the products in cart.
if (0 === $customer->getDiscount() || 0 === $cart->countCartItems()) {
// If no discount, or an empty cart, there's no need to duplicate.
$duplicateCart = false;
}
}
if ($duplicateCart) {
// Duplicate the cart
$cart = $this->duplicateCart($dispatcher, $cart, $customer);
} else {
// No duplication required, just assign the cart to the customer
$cart->setCustomerId($customer->getId())->save();
}
} elseif ($cart->getCustomerId() != null) {
// The cart belongs to another user
if (0 === $cart->countCartItems()) {
// No items in cart, assign it to nobody.
$cart->setCustomerId(null)->save();
} else {
// Some itemls in cart, duplicate it without assigning a customer ID.
$cart = $this->duplicateCart($dispatcher, $cart);
}
}
return $cart;
}