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@ -16,7 +16,9 @@ import cn.iocoder.mall.order.biz.dataobject.CartItemDO;
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import cn.iocoder.mall.product.api.ProductSpuService;
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import cn.iocoder.mall.product.api.bo.ProductSkuBO;
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import cn.iocoder.mall.product.api.bo.ProductSkuDetailBO;
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import cn.iocoder.mall.promotion.api.CouponService;
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import cn.iocoder.mall.promotion.api.PromotionActivityService;
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import cn.iocoder.mall.promotion.api.bo.CouponCardDetailBO;
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import cn.iocoder.mall.promotion.api.bo.PromotionActivityBO;
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import cn.iocoder.mall.promotion.api.constant.*;
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import com.alibaba.dubbo.config.annotation.Reference;
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@ -38,6 +40,8 @@ public class CartServiceImpl implements CartService {
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private ProductSpuService productSpuService;
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@Reference(validation = "true")
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private PromotionActivityService promotionActivityService;
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@Reference(validation = "true")
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private CouponService couponService;
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@Autowired
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private CartMapper cartMapper;
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@ -152,6 +156,7 @@ public class CartServiceImpl implements CartService {
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@Override
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public CommonResult<CalcOrderPriceBO> calcOrderPrice(CalcOrderPriceDTO calcOrderPriceDTO) {
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// TODO 芋艿，补充一些表单校验。例如说，需要传入用户编号。
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// 校验商品都存在
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Map<Integer, CalcOrderPriceDTO.Item> calcOrderItemMap = calcOrderPriceDTO.getItems().stream()
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.collect(Collectors.toMap(CalcOrderPriceDTO.Item::getSkuId, item -> item)); // KEY：skuId
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@ -177,7 +182,15 @@ public class CartServiceImpl implements CartService {
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// 3. 计算【满减送】促销
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List<CalcOrderPriceBO.ItemGroup> itemGroups = groupByFullPrivilege(items, activityList);
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calcOrderPriceBO.setItemGroups(itemGroups);
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// 4. 计算最终的价格
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// 4. 计算优惠劵
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if (calcOrderPriceDTO.getCouponCardId() != null) {
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CommonResult<Integer> result = modifyPriceByCouponCard(calcOrderPriceDTO.getUserId(), calcOrderPriceDTO.getCouponCardId(), itemGroups);
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if (result.isError()) {
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return CommonResult.error(result);
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}
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calcOrderPriceBO.setCouponCardDiscountTotal(result.getData());
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}
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// 5. 计算最终的价格
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int buyTotal = 0;
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int discountTotal = 0;
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int presentTotal = 0;
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@ -314,6 +327,72 @@ public class CartServiceImpl implements CartService {
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return itemGroups;
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}
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private CommonResult<Integer> modifyPriceByCouponCard(Integer userId, Integer couponCardId, List<CalcOrderPriceBO.ItemGroup> itemGroups) {
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Assert.isTrue(couponCardId != null, "优惠劵编号不能为空");
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// 查询优惠劵
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CommonResult<CouponCardDetailBO> couponCardResult = couponService.getCouponCardDetail(userId, couponCardId);
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if (couponCardResult.isError()) {
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return CommonResult.error(couponCardResult);
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}
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CouponCardDetailBO couponCard = couponCardResult.getData();
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// 获得匹配的商品
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List<CalcOrderPriceBO.Item> items = new ArrayList<>();
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if (RangeTypeEnum.ALL.getValue().equals(couponCard.getRangeType())) {
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// totalPrice = spus.stream().mapToInt(spu -> spu.getPrice() * spu.getQuantity()).sum();
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itemGroups.forEach(itemGroup -> items.addAll(itemGroup.getItems()));
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} else if (RangeTypeEnum.PRODUCT_INCLUDE_PART.getValue().equals(couponCard.getRangeType())) {
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itemGroups.forEach(itemGroup -> items.forEach(item -> {
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if (couponCard.getRangeValues().contains(item.getSpu().getId())) {
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items.add(item);
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}
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}));
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} else if (RangeTypeEnum.PRODUCT_EXCLUDE_PART.getValue().equals(couponCard.getRangeType())) {
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itemGroups.forEach(itemGroup -> items.forEach(item -> {
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if (!couponCard.getRangeValues().contains(item.getSpu().getId())) {
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items.add(item);
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}
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}));
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} else if (RangeTypeEnum.CATEGORY_INCLUDE_PART.getValue().equals(couponCard.getRangeType())) {
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itemGroups.forEach(itemGroup -> items.forEach(item -> {
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if (couponCard.getRangeValues().contains(item.getSpu().getCid())) {
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items.add(item);
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}
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}));
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} else if (RangeTypeEnum.CATEGORY_EXCLUDE_PART.getValue().equals(couponCard.getRangeType())) {
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itemGroups.forEach(itemGroup -> items.forEach(item -> {
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if (!couponCard.getRangeValues().contains(item.getSpu().getCid())) {
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items.add(item);
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}
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}));
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}
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// 判断是否符合条件
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int originalTotal = items.stream().mapToInt(CalcOrderPriceBO.Item::getPresentTotal).sum(); // 此处，指的是以优惠劵视角的原价
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if (originalTotal == 0 || originalTotal < couponCard.getPriceAvailable()) {
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return ServiceExceptionUtil.error(PromotionErrorCodeEnum.COUPON_CARD_NOT_MATCH.getCode()); // TODO 芋艿，这种情况，会出现错误码的提示，无法格式化出来。另外，这块的最佳实践，找人讨论下。
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}
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// 计算价格
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// 获得到优惠信息，进行价格计算
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int presentTotal;
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if (PreferentialTypeEnum.PRICE.getValue().equals(couponCard.getPreferentialType())) { // 减价
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// 计算循环次数。这样，后续优惠的金额就是相乘了
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presentTotal = originalTotal - couponCard.getPriceOff();
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Assert.isTrue(presentTotal > 0, "计算后，价格为负数：" + presentTotal);
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} else if (PreferentialTypeEnum.DISCOUNT.getValue().equals(couponCard.getPreferentialType())) { // 打折
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presentTotal = originalTotal * couponCard.getPercentOff() / 100;
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if (originalTotal - presentTotal > couponCard.getDiscountPriceLimit()) {
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presentTotal = originalTotal - couponCard.getDiscountPriceLimit();
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}
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} else {
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throw new IllegalArgumentException(String.format("优惠劵(%s) 的优惠类型不正确", couponCard.toString()));
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}
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int discountTotal = originalTotal - presentTotal;
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Assert.isTrue(discountTotal > 0, "计算后，不产生优惠：" + discountTotal);
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// 按比例，拆分 presentTotal
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splitDiscountPriceToItems(items, discountTotal, presentTotal);
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// 返回优惠金额
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return CommonResult.success(originalTotal - presentTotal);
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}
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/**
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* 计算指定 SKU 在限时折扣下的价格
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*
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@ -393,11 +472,31 @@ public class CartServiceImpl implements CartService {
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} else {
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throw new IllegalArgumentException(String.format("满减送促销(%s) 的优惠类型不正确", activity.toString()));
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}
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Integer discountTotal = originalTotal - presentTotal;
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int discountTotal = originalTotal - presentTotal;
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if (discountTotal == 0) {
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return null;
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}
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// 按比例，拆分 presentTotal
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// for (int i = 0; i < items.size(); i++) {
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// CalcOrderPriceBO.Item item = items.get(i);
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// Integer discountPart;
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// if (i < items.size() - 1) { // 减一的原因，是因为拆分时，如果按照比例，可能会出现.所以最后一个，使用反减
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// discountPart = (int) (discountTotal * (1.0D * item.getPresentTotal() / presentTotal));
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// discountTotal -= discountPart;
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// } else {
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// discountPart = discountTotal;
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// }
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// Assert.isTrue(discountPart > 0, "优惠金额必须大于 0");
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// item.setDiscountTotal(item.getDiscountTotal() + discountPart);
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// item.setPresentTotal(item.getBuyTotal() - item.getDiscountTotal());
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// item.setPresentPrice(item.getPresentTotal() / item.getBuyQuantity());
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// }
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splitDiscountPriceToItems(items, discountTotal, presentTotal);
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// 返回优惠金额
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return originalTotal - presentTotal;
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}
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private void splitDiscountPriceToItems(List<CalcOrderPriceBO.Item> items, Integer discountTotal, Integer presentTotal) {
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for (int i = 0; i < items.size(); i++) {
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CalcOrderPriceBO.Item item = items.get(i);
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Integer discountPart;
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@ -412,7 +511,6 @@ public class CartServiceImpl implements CartService {
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item.setPresentTotal(item.getBuyTotal() - item.getDiscountTotal());
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item.setPresentPrice(item.getPresentTotal() / item.getBuyQuantity());
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}
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return originalTotal - presentTotal;
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}
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private PromotionActivityBO findPromotionActivityByType(List<PromotionActivityBO> activityList, PromotionActivityTypeEnum type) {
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YunaiV
7 years ago