新增优惠券使用

.gitignore

@@ -40,3 +40,5 @@ build/
 .Trashes
 ehthumbs.db
 Thumbs.db
+/file/
+/websoft-modules.log

src/main/java/com/gxwebsoft/shop/entity/ShopUserCoupon.java

@@ -79,7 +79,7 @@ public class ShopUserCoupon implements Serializable {
     private LocalDateTime useTime;
 
     @Schema(description = "使用订单ID")
-    private Long orderId;
+    private Integer orderId;
 
     @Schema(description = "是否已使用")
     private Integer isUse;

src/main/java/com/gxwebsoft/shop/service/OrderBusinessService.java

@@ -14,6 +14,7 @@ import org.springframework.util.CollectionUtils;
 
 import javax.annotation.Resource;
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -46,6 +47,8 @@ public class OrderBusinessService {
 
     @Resource
     private ShopUserAddressService shopUserAddressService;
+    @Resource
+    private ShopUserCouponService shopUserCouponService;
 
     /**
      * 创建订单
@@ -274,6 +277,29 @@ public class OrderBusinessService {
             shopOrder.setPayType(1); // 默认微信支付
         }
 
+        // 优惠券
+        if (shopOrder.getCouponId() != null && shopOrder.getCouponId() > 0) {
+            ShopUserCoupon coupon = shopUserCouponService.getById(shopOrder.getCouponId());
+            if (coupon != null) {
+                BigDecimal reducePrice = BigDecimal.ZERO;
+                boolean doReduce = true;
+                if (coupon.getType().equals(10)) {
+                    reducePrice = coupon.getReducePrice();
+                    if (shopOrder.getTotalPrice().compareTo(coupon.getMinPrice()) < 0) doReduce = false;
+                } else if (coupon.getType().equals(20)) {
+                    reducePrice = shopOrder.getTotalPrice()
+                            .multiply(BigDecimal.valueOf(coupon.getDiscount()).divide(new BigDecimal(100), RoundingMode.HALF_UP));
+                } else if (coupon.getType().equals(30)) {
+                    reducePrice = shopOrder.getTotalPrice();
+                }
+                if (doReduce) {
+                    shopOrder.setReducePrice(shopOrder.getReducePrice().add(reducePrice));
+                    shopOrder.setPayPrice(shopOrder.getPayPrice().subtract(reducePrice));
+                }
+                // todo 商品/分类限制
+            }
+        }
+
         return shopOrder;
     }
 

src/main/java/com/gxwebsoft/shop/service/impl/ShopOrderServiceImpl.java

@@ -34,6 +34,7 @@ import org.springframework.util.CollectionUtils;
 import javax.annotation.Resource;
 import java.math.BigDecimal;
 import java.sql.Date;
+import java.time.LocalDateTime;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -74,6 +75,8 @@ public class ShopOrderServiceImpl extends ServiceImpl<ShopOrderMapper, ShopOrder
     private WechatPayCertificateDiagnostic certificateDiagnostic;
     @Resource
     private ShopOrderUpdate10550Service shopOrderUpdate10550Service;
+    @Resource
+    private ShopUserCouponService shopUserCouponService;
 
 
     @Override
@@ -249,6 +252,18 @@ public class ShopOrderServiceImpl extends ServiceImpl<ShopOrderMapper, ShopOrder
     @Override
     public void updateByOutTradeNo(ShopOrder order) {
         baseMapper.updateByOutTradeNo(order);
+        // 使用优惠券
+        if (order.getCouponId() != null && order.getCouponId() > 0) {
+            ShopUserCoupon coupon = shopUserCouponService.getById(order.getCouponId());
+            if (coupon != null) {
+                coupon.setStatus(1);
+                coupon.setIsUse(1);
+                coupon.setUseTime(LocalDateTime.now());
+                coupon.setOrderId(order.getOrderId());
+                coupon.setOrderNo(order.getOrderNo());
+                shopUserCouponService.updateById(coupon);
+            }
+        }
         if (order.getTenantId().equals(10550)) {
             shopOrderUpdate10550Service.update(order);
         }