@Override
public String modifyShoppingCartNum(String accountId, Integer cartId, Integer modifyNum) {
ShoppingCart shoppingCart = shoppingCartDAO.find(ShoppingCart.class, cartId);
if (shoppingCart == null || ObjectUtils.notEqual(accountId, shoppingCart.getAccountId())) {
return "记录不存在";
}
if (shoppingCart.getProductNum() + modifyNum <= 0) {
return TextConstant.PARAM_ERROR;
}
shoppingCart.setProductNum(shoppingCart.getProductNum() + modifyNum);
shoppingCartDAO.update(ShoppingCart.class, shoppingCart);
return null;
}
@Override
public String addShoppingCart(String accountId, Integer productId, Integer productNum) {
Account account = accountDAO.find(Account.class, accountId);
if (account == null) {
return "账号不存在";
}
ProductInfo productInfo = productInfoDAO.find(ProductInfo.class, productId);
if (productInfo == null) {
return "商品不存在";
}
ShoppingCart shoppingCart = shoppingCartDAO.getShoppingCartByProduct(accountId, productId);
if (shoppingCart == null) {
shoppingCart = new ShoppingCart();
shoppingCart.setProductInfo(productInfo);
shoppingCart.setCreateTime(new Date());
shoppingCart.setSellerInfo(productInfo.getSellerInfo());
shoppingCart.setAccountId(accountId);
shoppingCart.setProductNum(productNum);
shoppingCartDAO.add(ShoppingCart.class, shoppingCart);
} else {
shoppingCart.setProductNum(shoppingCart.getProductNum() + productNum);
shoppingCartDAO.update(ShoppingCart.class, shoppingCart);
}
return null;
}
private List<ShoppingCartVo> formatShoppingCartVo(List<ShoppingCart> shoppingCartList) {
Map<Integer, List<ProductInfoVo>> cartVoMap = new HashMap<>();
Map<Integer, SellerInfo> sellerInfoMap = new HashMap<>();
for (ShoppingCart shoppingCart : shoppingCartList) {
List<ProductInfoVo> productInfoVoList = new ArrayList<>();
Integer sellerId = shoppingCart.getSellerInfo().getSellerId();
if (cartVoMap.containsKey(sellerId)) {
productInfoVoList = cartVoMap.get(sellerId);
}
productInfoVoList.add(new ProductInfoVo(shoppingCart));
cartVoMap.put(sellerId, productInfoVoList);
sellerInfoMap.put(sellerId, shoppingCart.getSellerInfo());
}
List<ShoppingCartVo> shoppingCartVoList = new ArrayList<>();
for (Integer sellerId : cartVoMap.keySet()) {
SellerInfo sellerInfo = sellerInfoMap.get(sellerId);
shoppingCartVoList.add(new ShoppingCartVo(sellerInfo, cartVoMap.get(sellerId)));
}
return shoppingCartVoList;
}