fix orig_discount bug

soss-system/src/main/java/com/soss/system/service/impl/CouponUserServiceImpl.java

 package com.soss.system.service.impl;
 
+import com.alibaba.fastjson.JSON;
 import com.soss.common.enums.CouponCategoryType;
 import com.soss.common.enums.CouponState;
 import com.soss.common.enums.CouponUserType;
@@ -22,6 +23,7 @@ import org.springframework.util.CollectionUtils;
 import java.math.BigDecimal;
 import java.time.LocalDateTime;
 import java.util.*;
+import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -190,6 +192,9 @@ public class CouponUserServiceImpl implements ICouponUserService {
         BigDecimal orderTotalAmount = orderDetails.stream().map(OrderDetail::getAmountShould).reduce(BigDecimal.ZERO, BigDecimal::add);
         BigDecimal orderTotalOrigDiscount = orderDetails.stream().map(OrderDetail::getOrigDiscount).reduce(BigDecimal.ZERO, BigDecimal::add);
         log.info("orderTotalAmount:{}, orderTotalOrigDiscount:{}", orderTotalAmount, orderTotalOrigDiscount);
+        if (!CollectionUtils.isEmpty(couponVos)) {
+            orderDetails.forEach(x -> x.setAmountShould(x.getOrigDiscount()));
+        }
         couponVos.stream().filter(couponVo -> StringUtils.isEmpty(couponVo.getNotFitableDesc())).forEach(couponVo -> {
             /** 可用饮品范围的判断 */
             List<Long> fitCouponGoodsIdList = goods.stream().filter(good ->
@@ -206,11 +211,27 @@ public class CouponUserServiceImpl implements ICouponUserService {
             }
             /** 券价值的判断 */
             if (couponVo.getType().equals(CouponCategoryType.DEDUCTION.getType())) { // 抵扣
-                if (couponVo.getPriceLimit() != null && couponVo.getPriceLimit().compareTo(BigDecimal.ZERO) != 0 && couponVo.getPriceLimit().compareTo(orderTotalAmount) > 0) {
+                if (couponVo.getPriceLimit() != null && couponVo.getPriceLimit().compareTo(BigDecimal.ZERO) != 0 && couponVo.getPriceLimit().compareTo(orderTotalOrigDiscount) > 0) {
                     couponVo.setNotFitableDesc("未达到满减要求");
                     return;
                 }
                 couponVo.setCouponAmount(couponVo.getPriceDiscount().min(orderTotalOrigDiscount));
+
+                AtomicReference<Integer> nums = new AtomicReference<>(0);
+                orderDetails.forEach(x -> nums.updateAndGet(v -> v + x.getNum()));
+                log.info("nums:{}", nums);
+                if (nums.get() <= 1) {
+                    OrderDetail orderDetail = orderDetails.get(0);
+                    orderDetail.setCouponAmount(couponVo.getCouponAmount().negate());
+                    orderDetail.setRealAmount(orderDetail.getAmountShould().add(orderDetail.getCouponAmount()));
+                } else {
+                    orderDetails.forEach(orderDetail -> {
+                        BigDecimal rate = orderDetail.getAmountShould().divide(orderTotalOrigDiscount, 2, BigDecimal.ROUND_HALF_UP);;
+                        orderDetail.setCouponAmount(couponVo.getCouponAmount().negate().multiply(rate));
+                        orderDetail.setRealAmount(orderDetail.getAmountShould().add(orderDetail.getCouponAmount()));
+                        log.info("rate:{},detail:{}", rate, JSON.toJSON(orderDetail));
+                    });
+                }
             } else {
                 List<OrderDetail> fitOrderDetails = orderDetails.stream().filter(orderDetail -> fitCouponGoodsIdList.contains(orderDetail.getGoodsId())).collect(Collectors.toList());
                 BigDecimal fitGoodsAmount = fitOrderDetails.stream().map(OrderDetail::getAmountShould).reduce(BigDecimal.ZERO, BigDecimal::add);
@@ -261,7 +282,7 @@ public class CouponUserServiceImpl implements ICouponUserService {
             orderDetail.setOriAmount(skuNum.multiply(sku.getPrice()));
             orderDetail.setUnitPrice(sku.getDiscount());
             orderDetail.setAmountShould(skuNum.multiply(sku.getDiscount()));
-            orderDetail.setOrigDiscount(sku.getOrigDiscount());
+            orderDetail.setOrigDiscount(skuNum.multiply(sku.getOrigDiscount()));
         });
         return goodsSkus;
     }