private CartProduct getCartProduct(
ProductAddedToCustomerCart productAddedToCustomerCart, CustomerCart customerCart) {
UUID productId = productAddedToCustomerCart.getProductId();
Optional<CartProduct> cartProduct =
customerCart
.getProducts()
.stream()
.filter(p -> p.getProductId().equals(productId))
.findFirst();
CartProduct productToAdd;
if (cartProduct.isPresent()) {
productToAdd = cartProduct.get();
int newQuantity = productToAdd.getQuantity() + 1;
productToAdd.setQuantity(newQuantity);
} else {
productToAdd = new CartProduct();
productToAdd.setProductId(productId);
productToAdd.setQuantity(1);
}
Product productDeatils = this.productRepository.getProduct(productId);
if (productDeatils != null) {
productToAdd.setDescription(productDeatils.getDescription());
productToAdd.setCost(productDeatils.getCost());
productToAdd.setName(productDeatils.getName());
}
return productToAdd;
}
public void handle(ProductAddedToCustomerCart productAddedToCustomerCart) {
CustomerCart customerCart =
customerCartRepository.getCustomerCart(productAddedToCustomerCart.getCartId());
if (customerCart == null) {
customerCart = new CustomerCart();
customerCart.setCustomerCartId(productAddedToCustomerCart.getCartId());
}
// Deal with Product Addition
CartProduct productToAdd = getCartProduct(productAddedToCustomerCart, customerCart);
// Remove existing version (if it exists) and add new version
customerCart
.getProducts()
.removeIf(p -> p.getProductId().equals(productAddedToCustomerCart.getProductId()));
customerCart.getProducts().add(productToAdd);
customerCart.setCorrelationId(productAddedToCustomerCart.getCorrelationId());
customerCart.setUpdatedAt(productAddedToCustomerCart.getUpdateDateTime());
// Store
customerCartRepository.storeCustomerCart(customerCart);
}