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Price 价格服务的编写

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This commit is contained in:
YunaiV
2020-08-12 20:05:48 +08:00
parent 84cc2728bd
commit ed71f5e9c8
24 changed files with 457 additions and 81 deletions
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64
order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/service/CartServiceImpl.java
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@@ -47,25 +47,8 @@ public class CartServiceImpl implements CartService {
@Override
public CalcOrderPriceBO calcOrderPrice(CalcOrderPriceDTO calcOrderPriceDTO) {
// TODO 芋艿，补充一些表单校验。例如说，需要传入用户编号。
// 校验商品都存在
Map<Integer, CalcOrderPriceDTO.Item> calcOrderItemMap = calcOrderPriceDTO.getItems().stream()
.collect(Collectors.toMap(CalcOrderPriceDTO.Item::getSkuId, item -> item)); // KEY：skuId
List<ProductSkuDetailBO> skus = productSpuService.getProductSkuDetailList(calcOrderItemMap.keySet());
if (skus.size() != calcOrderPriceDTO.getItems().size()) {
throw ServiceExceptionUtil.exception(OrderErrorCodeEnum.ORDER_ITEM_SOME_NOT_EXISTS.getCode());
}
// TODO 库存相关
// 查询促销活动
List<PromotionActivityBO> activityList = promotionActivityService.getPromotionActivityListBySpuIds(
skus.stream().map(sku -> sku.getSpu().getId()).collect(Collectors.toSet()),
Collections.singletonList(PromotionActivityStatusEnum.RUN.getValue()));
// 拼装结果（主要是计算价格）
CalcOrderPriceBO calcOrderPriceBO = new CalcOrderPriceBO();
// 1. 创建初始的每一项的数组
List<CalcOrderPriceBO.Item> items = initCalcOrderPriceItems(skus, calcOrderItemMap);
// 2. 计算【限时折扣】促销
modifyPriceByTimeLimitDiscount(items, activityList);
// 3. 计算【满减送】促销
List<CalcOrderPriceBO.ItemGroup> itemGroups = groupByFullPrivilege(items, activityList);
calcOrderPriceBO.setItemGroups(itemGroups);
@@ -114,52 +97,7 @@ public class CartServiceImpl implements CartService {
.setOriginalPrice(sku.getPrice()).setBuyPrice(presentPrice);
}
private List<CalcOrderPriceBO.Item> initCalcOrderPriceItems(List<ProductSkuDetailBO> skus,
Map<Integer, CalcOrderPriceDTO.Item> calcOrderItemMap) {
List<CalcOrderPriceBO.Item> items = new ArrayList<>();
for (ProductSkuDetailBO sku : skus) {
CalcOrderPriceBO.Item item = CartConvert.INSTANCE.convert(sku);
items.add(item);
// 将是否选中，购物数量，复制到 item 中
CalcOrderPriceDTO.Item calcOrderItem = calcOrderItemMap.get(sku.getId());
item.setSelected(calcOrderItem.getSelected());
item.setBuyQuantity(calcOrderItem.getQuantity());
// 计算初始价格
item.setOriginPrice(sku.getPrice());
item.setBuyPrice(sku.getPrice());
item.setPresentPrice(sku.getPrice());
item.setBuyTotal(sku.getPrice() * calcOrderItem.getQuantity());
item.setDiscountTotal(0);
item.setPresentTotal(item.getBuyTotal());
}
return items;
}
private void modifyPriceByTimeLimitDiscount(List<CalcOrderPriceBO.Item> items, List<PromotionActivityBO> activityList) {
for (CalcOrderPriceBO.Item item : items) {
// 获得符合条件的限时折扣
PromotionActivityBO timeLimitedDiscount = activityList.stream()
.filter(activity -> PromotionActivityTypeEnum.TIME_LIMITED_DISCOUNT.getValue().equals(activity.getActivityType())
&& activity.getTimeLimitedDiscount().getItems().stream().anyMatch(item0 -> item0.getSpuId().equals(item.getSpu().getId())))
.findFirst().orElse(null);
if (timeLimitedDiscount == null) {
continue;
}
// 计算价格
ProductSkuBO sku = new ProductSkuBO().setId(item.getId()).setSpuId(item.getSpu().getId()).setPrice(item.getPrice());
Integer newPrice = calcSkuPriceByTimeLimitDiscount(sku, timeLimitedDiscount);
if (newPrice.equals(item.getPrice())) {
continue;
}
// 设置优惠
item.setActivity(timeLimitedDiscount);
// 设置价格
item.setBuyPrice(newPrice);
item.setBuyTotal(newPrice * item.getBuyQuantity());
item.setPresentTotal(item.getBuyTotal() - item.getDiscountTotal());
item.setPresentPrice(item.getPresentTotal() / item.getBuyQuantity());
}
}
private List<CalcOrderPriceBO.ItemGroup> groupByFullPrivilege(List<CalcOrderPriceBO.Item> items, List<PromotionActivityBO> activityList) {
List<CalcOrderPriceBO.ItemGroup> itemGroups = new ArrayList<>();