public static void calculateTotal(ShoppingCartStructure shoppingCartStructure) {
Double total = 0.0;
for (Product product : shoppingCartStructure.getProducts()) {
Integer count = product.getCount();
Double price = product.getPrice();
total = total + count * price;
}
shoppingCartStructure.setTotal(total);
calculateOffers(shoppingCartStructure);
shoppingCartStructure.setGrandTotal(
shoppingCartStructure.getTotal() + shoppingCartStructure.getOffer());
}
public static void calculateOffers(ShoppingCartStructure shoppingCartStructure) {
Map<String, ArrayList<Product>> sameTypeProductsMap = new HashMap<String, ArrayList<Product>>();
for (Product product : shoppingCartStructure.getProducts()) {
String productId = product.getProductId();
ArrayList<Product> sameTypeProducts = new ArrayList<Product>();
if (sameTypeProductsMap.containsKey(productId)) {
sameTypeProducts = sameTypeProductsMap.get(productId);
}
sameTypeProducts.add(product);
sameTypeProductsMap.put(productId, sameTypeProducts);
}
Map<String, ProductOffer> possibleOffersMap = shoppingCartStructure.getPossibleOffersMap();
if (!possibleOffersMap.isEmpty()) {
Double offer = 0.0;
for (String productId : sameTypeProductsMap.keySet()) {
if (possibleOffersMap.containsKey(productId)
&& sameTypeProductsMap.containsKey(productId)) {
Integer sameProductCount = 0;
ArrayList<Product> sameProducts = sameTypeProductsMap.get(productId);
if (!sameProducts.isEmpty()) {
for (Product sameProduct : sameProducts) {
sameProductCount = sameProductCount + sameProduct.getCount();
}
ProductOffer productOffer = possibleOffersMap.get(productId);
Double offerCondition = productOffer.getOfferCondition();
int offerApplyTimes = (int) (sameProductCount / offerCondition);
if (offerApplyTimes > 0) {
Double price = sameProducts.get(0).getPrice();
Double offerFormula = productOffer.getOfferFormula();
offer = offer + offerApplyTimes * price * offerFormula;
shoppingCartStructure.getAppliedOffers().add(productOffer);
}
}
}
}
shoppingCartStructure.setOffer(offer);
}
}