From dc67dd90c6840d0770cb5bcd3cf62c58f9e0bd14 Mon Sep 17 00:00:00 2001
From: KKSU <15274802129@163.com>
Date: Thu, 01 Feb 2024 16:02:35 +0800
Subject: [PATCH] 会员列表增加波卷功能

---
 src/main/java/cc/mrbird/febs/mall/dto/MallMemberCouponDto.java                  |    3 
 src/main/java/cc/mrbird/febs/mall/mapper/MallGoodsSkuMapper.java                |    6 +
 src/test/java/cc/mrbird/febs/AgentTest.java                                     |   16 +++
 src/main/java/cc/mrbird/febs/mall/service/IApiMallOrderInfoService.java         |    3 
 src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java |  171 +++++++++++++++++++++++++---------
 src/main/resources/mapper/modules/MallGoodsSkuMapper.xml                        |   26 +++++
 src/main/java/cc/mrbird/febs/mall/mapper/CouponGoodsMapper.java                 |    2 
 src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallMemberServiceImpl.java    |    5 
 src/main/resources/mapper/modules/CouponGoodsMapper.xml                         |    9 +
 9 files changed, 195 insertions(+), 46 deletions(-)

diff --git a/src/main/java/cc/mrbird/febs/mall/dto/MallMemberCouponDto.java b/src/main/java/cc/mrbird/febs/mall/dto/MallMemberCouponDto.java
index 55a07c1..44a3617 100644
--- a/src/main/java/cc/mrbird/febs/mall/dto/MallMemberCouponDto.java
+++ b/src/main/java/cc/mrbird/febs/mall/dto/MallMemberCouponDto.java
@@ -14,6 +14,9 @@
     @ApiModelProperty(value = "商品ID", example = "1")
     private Long goodsId;
 
+    @ApiModelProperty(value = "商品ID集合", example = "1")
+    private List<Long> goodsIdList;
+
     @ApiModelProperty(value = "1:待使用 2:已使用 3:已过期", example = "1")
     private Integer state;
 
diff --git a/src/main/java/cc/mrbird/febs/mall/mapper/CouponGoodsMapper.java b/src/main/java/cc/mrbird/febs/mall/mapper/CouponGoodsMapper.java
index 358ed36..e44943f 100644
--- a/src/main/java/cc/mrbird/febs/mall/mapper/CouponGoodsMapper.java
+++ b/src/main/java/cc/mrbird/febs/mall/mapper/CouponGoodsMapper.java
@@ -13,4 +13,6 @@
     List<Long> selectByCouponId(Long id);
 
     List<CouponGoods> selectByGoodIdAndCouponId(@Param("goodsId")Long goodsId, @Param("couponId")Long couponId);
+
+    List<Long> selectByGoodIdList(@Param("list")List<Long> goodsIdList);
 }
diff --git a/src/main/java/cc/mrbird/febs/mall/mapper/MallGoodsSkuMapper.java b/src/main/java/cc/mrbird/febs/mall/mapper/MallGoodsSkuMapper.java
index 41152a7..7dc7f9f 100644
--- a/src/main/java/cc/mrbird/febs/mall/mapper/MallGoodsSkuMapper.java
+++ b/src/main/java/cc/mrbird/febs/mall/mapper/MallGoodsSkuMapper.java
@@ -23,4 +23,10 @@
     Integer upDateStockAndVolumeBySkuId(@Param("id")Long id, @Param("cnt")Integer cnt);
 
     Integer updateStockAndVolumeBySkuId(@Param("id")Long id, @Param("cnt")Integer cnt);
+
+    List<Long> selectGoodsIdBySkuIds(@Param("list")List<Long> skuIds);
+
+    List<MallGoodsSku> selectSkuIdsByGoodsId(@Param("list")List<Long> goodsIdsAll);
+
+    List<MallGoodsSku> selectByIds(@Param("list")List<Long> skuIds);
 }
diff --git a/src/main/java/cc/mrbird/febs/mall/service/IApiMallOrderInfoService.java b/src/main/java/cc/mrbird/febs/mall/service/IApiMallOrderInfoService.java
index 3c4c494..5632b26 100644
--- a/src/main/java/cc/mrbird/febs/mall/service/IApiMallOrderInfoService.java
+++ b/src/main/java/cc/mrbird/febs/mall/service/IApiMallOrderInfoService.java
@@ -7,6 +7,7 @@
 import cc.mrbird.febs.mall.vo.OrderListVo;
 import com.baomidou.mybatisplus.extension.service.IService;
 
+import java.math.BigDecimal;
 import java.util.List;
 import java.util.Map;
 
@@ -22,6 +23,8 @@
 
     OrderDetailVo findOrderDetailsById(Long id);
 
+    Map<Long, BigDecimal> getCouponAmountMap(Long memberCouponId, List<AddOrderItemDto> items);
+
     void confirmOrder(Long id);
 
     void delOrder(Long id);
diff --git a/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallMemberServiceImpl.java b/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallMemberServiceImpl.java
index 059ea38..1940992 100644
--- a/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallMemberServiceImpl.java
+++ b/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallMemberServiceImpl.java
@@ -1004,7 +1004,10 @@
         Long memberId = LoginUserUtil.getLoginUser().getId();
         mallMemberCouponDto.setMemberId(memberId);
         mallMemberCouponDto.setExpireTime(DateUtil.date());
-        List<Long> couponIds = couponGoodsMapper.selectByGoodId(mallMemberCouponDto.getGoodsId());
+//        List<Long> couponIds = couponGoodsMapper.selectByGoodId(mallMemberCouponDto.getGoodsId());
+        List<Long> goodsIdList = mallMemberCouponDto.getGoodsIdList();
+        List<Long> couponIds = couponGoodsMapper.selectByGoodIdList(goodsIdList);
+
         List<MallMemberCouponVo> mallMemberCouponVos = new ArrayList<>();
         if(CollUtil.isNotEmpty(couponIds)){
             mallMemberCouponVos = mallMemberCouponMapper.selectListCreateInPage(mallMemberCouponDto,couponIds);
diff --git a/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java b/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java
index e7aa9be..924fbef 100644
--- a/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java
+++ b/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java
@@ -124,6 +124,24 @@
         this.baseMapper.insert(orderInfo);
 
         BigDecimal total = BigDecimal.ZERO;
+        /**
+         * 根据传入的优惠卷ID和商品明细集合计算出每个商品获取的实际支付金额
+         */
+        Map<Long, BigDecimal> couponAmountMap = new HashMap<>();
+        MallMemberCoupon mallMemberCoupon = new MallMemberCoupon();
+        if(ObjectUtil.isNotEmpty(addOrderDto.getMemberCouponId())){
+            Long memberCouponId = addOrderDto.getMemberCouponId();
+            mallMemberCoupon = mallMemberCouponMapper.selectById(memberCouponId);
+            if(ObjectUtil.isEmpty(mallMemberCoupon)){
+                throw new FebsException(mallMemberCoupon.getCouponName()+"无法使用");
+            }
+            Integer state = mallMemberCoupon.getState();
+            if(1 != state){
+                throw new FebsException(mallMemberCoupon.getCouponName()+"无法使用");
+            }
+            List<AddOrderItemDto> items = addOrderDto.getItems();
+            couponAmountMap = getCouponAmountMap(memberCouponId, items);
+        }
         for (AddOrderItemDto item : addOrderDto.getItems()) {
                 MallOrderItem orderItem = new MallOrderItem();
 
@@ -201,49 +219,11 @@
                     //是否使用优惠卷
                     if(ObjectUtil.isNotEmpty(addOrderDto.getMemberCouponId())){
                         Long memberCouponId = addOrderDto.getMemberCouponId();
-                        MallMemberCoupon mallMemberCoupon = mallMemberCouponMapper.selectById(memberCouponId);
-                        if(ObjectUtil.isEmpty(mallMemberCoupon)){
-                            throw new FebsException(mallMemberCoupon.getCouponName()+"无法使用");
+                        BigDecimal skuCouponAmount = couponAmountMap.get(item.getSkuId());//使用折扣卷后的应该支付的钱
+                        if(skuCouponAmount.compareTo(BigDecimal.ZERO) > 0){
+                            amount = skuCouponAmount;
                         }
-                        Integer state = mallMemberCoupon.getState();
-                        if(1 != state){
-                            throw new FebsException(mallMemberCoupon.getCouponName()+"无法使用");
-                        }
-                        //卷是否和商品绑定
-                        Long skuGoodsId = sku.getGoodsId();
-                        Long couponId = mallMemberCoupon.getCouponId();
-                        MallGoodsCoupon mallGoodsCoupon = mallGoodsCouponMapper.selectById(mallMemberCoupon.getCouponId());
-                        if(ObjectUtil.isEmpty(mallGoodsCoupon)){
-                            throw new FebsException(mallGoodsCoupon.getName()+"无法使用");
-                        }
-                        Integer stateCoupon = mallGoodsCoupon.getState();
-                        if(2 != stateCoupon){
-                            throw new FebsException(mallGoodsCoupon.getName()+"无法使用");
-                        }
-                        List<CouponGoods> couponGoods = couponGoodsMapper.selectByGoodIdAndCouponId(skuGoodsId, couponId);
-                        if(ObjectUtil.isEmpty(couponGoods)){
-                            throw new FebsException(sku.getGoodsName()+"无法使用"+mallMemberCoupon.getCouponName());
-                        }
-//                        Long goodsId = mallMemberCoupon.getGoodsId();
-//                        if(goodsId != sku.getGoodsId()){
-//                            throw new FebsException(sku.getGoodsName()+"无法使用"+mallMemberCoupon.getCouponName());
-//                        }
-                        BigDecimal costAmount = mallGoodsCoupon.getCostAmount();
-                        BigDecimal realAmount = mallGoodsCoupon.getRealAmount();
-                        if(amount.compareTo(costAmount) >= 0){
-                            Integer type = mallGoodsCoupon.getType();
-                            if(MallGoodsCoupon.TYPE_TWO == type){
-                                BigDecimal divideTime = amount.divide(costAmount, 0, BigDecimal.ROUND_DOWN);//累计减免次数
-                                BigDecimal multiply = divideTime.multiply(realAmount);//实际减免金额
-                                amount = (amount.subtract(multiply).compareTo(BigDecimal.ZERO) > 0 ? amount.subtract(multiply) : BigDecimal.ZERO);
-                            }
-                            if(MallGoodsCoupon.TYPE_ONE == type){
-                                amount = (amount.subtract(realAmount).compareTo(BigDecimal.ZERO) > 0 ? amount.subtract(realAmount) : BigDecimal.ZERO);
-                            }
-                            orderItem.setMemberCouponId(memberCouponId);
-                            mallMemberCoupon.setState(2);
-                            mallMemberCouponMapper.updateById(mallMemberCoupon);
-                        }
+                        orderItem.setMemberCouponId(memberCouponId);
                     }
                     orderItem.setAmount(amount);
                     orderItem.setCnt(item.getCnt());
@@ -278,6 +258,9 @@
                 }
                 mallOrderItemMapper.insert(orderItem);
         }
+
+        mallMemberCoupon.setState(2);
+        mallMemberCouponMapper.updateById(mallMemberCoupon);
         //运费
         BigDecimal delivaryAmount = addOrderDto.getDeliveryAmount() == null ? BigDecimal.ZERO : addOrderDto.getDeliveryAmount();
         orderInfo.setCarriage(delivaryAmount);
@@ -301,10 +284,108 @@
         return orderInfo.getId();
     }
 
+    /**
+     * 根据传入的优惠卷ID和商品明细集合计算出每个商品获取的实际支付金额
+     * @param memberCouponId 优惠卷ID
+     * @param items 商品明细
+     * @return Map<Long,BigDecimal> skuId,实际支付金额
+     */
+    @Override
+    public Map<Long,BigDecimal> getCouponAmountMap(Long memberCouponId,List<AddOrderItemDto> items){
+        HashMap<Long,BigDecimal> couponAmountMap = new HashMap<>();
+        MallMemberCoupon mallMemberCoupon = mallMemberCouponMapper.selectById(memberCouponId);
+        if(ObjectUtil.isEmpty(mallMemberCoupon)){
+            return couponAmountMap;
+        }
+        Integer state = mallMemberCoupon.getState();
+        if(1 != state){
+            return couponAmountMap;
+        }
+        Long couponId = mallMemberCoupon.getCouponId();//优惠卷ID
+        List<Long> goodsIdsAll = couponGoodsMapper.selectByCouponId(couponId);
+        List<MallGoodsSku> skusAll = mallGoodsSkuMapper.selectSkuIdsByGoodsId(goodsIdsAll);//获取该优惠卷绑定的全部商品sku
+        List<Long> skuIdsAll = skusAll.stream().map(MallGoodsSku::getId).collect(Collectors.toList());//获取该优惠卷绑定的全部商品skuIDS
+        List<Long> skuIds = items.stream().map(AddOrderItemDto::getSkuId).collect(Collectors.toList());//订单中的全部skuIds
+
+        /**
+         * 获取这张优惠卷生效的skuIds
+         */
+        Set<Long> intersection = skuIdsAll.stream()
+                .filter(item -> skuIds.contains(item))
+                .collect(Collectors.toSet());//获取两个集合的交集
+        if(CollUtil.isEmpty(intersection)){
+            return couponAmountMap;
+        }
+        HashMap<Long,BigDecimal> skuMap = new HashMap<>();//每个订单详情的ID和amount的map
+        List<MallGoodsSku> skus = mallGoodsSkuMapper.selectByIds(new ArrayList<>(intersection));
+        BigDecimal totalAmount = BigDecimal.ZERO;//订单中的总金额
+        Map<Long, AddOrderItemDto> itemMap = new HashMap<>();// 预先将items转换为Map,以skuId作为键
+        for (AddOrderItemDto addOrderItemDto : items) {
+            itemMap.put(addOrderItemDto.getSkuId(), addOrderItemDto);
+        }
+        for(MallGoodsSku mallGoodsSku : skus){
+            Long id = mallGoodsSku.getId();
+            BigDecimal presentPrice = mallGoodsSku.getPresentPrice();
+            // 检查itemMap中是否存在该商品
+            AddOrderItemDto addOrderItemDto = itemMap.get(id);
+            if (addOrderItemDto != null) {
+                BigDecimal skuAmount = presentPrice.multiply(BigDecimal.valueOf(addOrderItemDto.getCnt()));
+                totalAmount = totalAmount.add(skuAmount);
+                skuMap.put(id,skuAmount);
+            }
+        }
+
+        /**
+         * 计算每个商品利用优惠卷打折的具体金额
+         */
+        MallGoodsCoupon mallGoodsCoupon = mallGoodsCouponMapper.selectById(mallMemberCoupon.getCouponId());
+        BigDecimal costAmount = mallGoodsCoupon.getCostAmount();
+        BigDecimal realAmount = mallGoodsCoupon.getRealAmount();
+        if(totalAmount.compareTo(costAmount) < 0){
+            return couponAmountMap;
+        }
+        HashMap<Long,BigDecimal> skuMapPercent = new HashMap<>();//每个订单详情的ID和amount的map
+        for (Map.Entry<Long,BigDecimal> entry : skuMap.entrySet()) {
+            Long keySkuId = entry.getKey();
+            BigDecimal valueSkuAmount = entry.getValue();
+            BigDecimal divide = valueSkuAmount.divide(totalAmount, 4, BigDecimal.ROUND_DOWN);//每个商品占符合满减的总额的比例
+            skuMapPercent.put(keySkuId,divide);
+            Integer type = mallGoodsCoupon.getType();
+            if(MallGoodsCoupon.TYPE_ONE == type){
+                BigDecimal bigDecimal = realAmount.multiply(divide).setScale(2, BigDecimal.ROUND_DOWN);//每个SKU的减免金额(比例*减免金额)
+                BigDecimal skuRealAmount = valueSkuAmount.subtract(bigDecimal.compareTo(BigDecimal.ZERO) > 0 ? bigDecimal : BigDecimal.ZERO);//实际支付金额
+                couponAmountMap.put(keySkuId,skuRealAmount);
+            }
+            if(MallGoodsCoupon.TYPE_TWO == type){
+                BigDecimal divideTime = totalAmount.divide(costAmount, 0, BigDecimal.ROUND_DOWN);//累计减免次数
+                BigDecimal multiply = divideTime.multiply(realAmount);//实际减免金额
+                BigDecimal bigDecimal = multiply.multiply(divide).setScale(2, BigDecimal.ROUND_DOWN);//每个SKU的减免金额(比例*实际减免金额)
+                BigDecimal skuRealAmount = valueSkuAmount.subtract(bigDecimal.compareTo(BigDecimal.ZERO) > 0 ? bigDecimal : BigDecimal.ZERO);//实际支付金额
+                couponAmountMap.put(keySkuId,skuRealAmount);
+            }
+        }
+        return couponAmountMap;
+    }
+
     public static void main(String[] args) {
-        BigDecimal bigDecimal = new BigDecimal(980);
-        BigDecimal divide = bigDecimal.divide(new BigDecimal(100), 0, BigDecimal.ROUND_DOWN);
-        System.out.println(divide);
+        List<Integer> a = new ArrayList<>();
+        a.add(1);
+        a.add(2);
+        a.add(3);
+        List<Integer> b = new ArrayList<>();
+        b.add(3);
+        b.add(4);
+        b.add(5);
+        boolean b1 = a.retainAll(b);
+        System.out.println(b1);
+        System.out.println(a);
+        System.out.println(b);
+        List<Integer> intersection = a.stream()
+                .filter(item -> b.contains(item))
+                .collect(Collectors.toList());
+
+        System.out.println(intersection);
+
     }
 
 
diff --git a/src/main/resources/mapper/modules/CouponGoodsMapper.xml b/src/main/resources/mapper/modules/CouponGoodsMapper.xml
index c5f1acf..f3039df 100644
--- a/src/main/resources/mapper/modules/CouponGoodsMapper.xml
+++ b/src/main/resources/mapper/modules/CouponGoodsMapper.xml
@@ -21,4 +21,13 @@
         and coupon_id = #{couponId}
     </select>
 
+    <select id="selectByGoodIdList" resultType="java.lang.Long">
+        select a.coupon_id
+        from coupon_goods a
+        where goods_id IN
+        <foreach collection = "list" item = "item"  separator=","  open = "(" close = ")" >
+            #{item}
+        </foreach >
+    </select>
+
 </mapper>
\ No newline at end of file
diff --git a/src/main/resources/mapper/modules/MallGoodsSkuMapper.xml b/src/main/resources/mapper/modules/MallGoodsSkuMapper.xml
index 2757dce..507ef26 100644
--- a/src/main/resources/mapper/modules/MallGoodsSkuMapper.xml
+++ b/src/main/resources/mapper/modules/MallGoodsSkuMapper.xml
@@ -52,4 +52,30 @@
             sku_volume = sku_volume - #{cnt}
         where id=#{id} and  sku_volume - #{cnt} <![CDATA[ >= ]]> 0
     </update>
+
+    <select id="selectGoodsIdBySkuIds" resultType="java.lang.Long">
+        select goods_id from mall_goods_sku
+        where  id IN
+        <foreach collection = "list" item = "item"  separator=","  open = "(" close = ")" >
+            #{item}
+        </foreach >
+    </select>
+
+    <select id="selectSkuIdsByGoodsId" resultType="cc.mrbird.febs.mall.entity.MallGoodsSku">
+        select * from mall_goods_sku
+        where  goods_id IN
+        <foreach collection = "list" item = "item"  separator=","  open = "(" close = ")" >
+            #{item}
+        </foreach >
+        order by id desc
+    </select>
+
+    <select id="selectByIds" resultType="cc.mrbird.febs.mall.entity.MallGoodsSku">
+        select * from mall_goods_sku
+        where  id IN
+        <foreach collection = "list" item = "item"  separator=","  open = "(" close = ")" >
+            #{item}
+        </foreach >
+        order by id desc
+    </select>
 </mapper>
\ No newline at end of file
diff --git a/src/test/java/cc/mrbird/febs/AgentTest.java b/src/test/java/cc/mrbird/febs/AgentTest.java
index 7be46b8..3a28cd9 100644
--- a/src/test/java/cc/mrbird/febs/AgentTest.java
+++ b/src/test/java/cc/mrbird/febs/AgentTest.java
@@ -12,6 +12,7 @@
 import cc.mrbird.febs.mall.mapper.*;
 import cc.mrbird.febs.mall.quartz.ProfitJob;
 import cc.mrbird.febs.mall.service.IAgentService;
+import cc.mrbird.febs.mall.service.IApiMallOrderInfoService;
 import cc.mrbird.febs.mall.vo.*;
 import cc.mrbird.febs.pay.util.WechatConfigure;
 import cc.mrbird.febs.rabbit.consumer.AgentConsumer;
@@ -82,6 +83,21 @@
     private  MallGoodsMapper mallGoodsMapper;
     @Autowired
     private  MallGoodsImagesMapper goodsImagesMapper;
+    @Autowired
+    private IApiMallOrderInfoService iApiMallOrderInfoService;
+    @Test
+    public void getCouponAmountMap(){
+        Long memberCouponId = 139L;
+        List<AddOrderItemDto> items = new ArrayList<>();
+        AddOrderItemDto addOrderItemDto = new AddOrderItemDto();
+        addOrderItemDto.setSkuId(185L);
+        addOrderItemDto.setCnt(2);
+        items.add(addOrderItemDto);
+        Map<Long, BigDecimal> couponAmountMap = iApiMallOrderInfoService.getCouponAmountMap(memberCouponId, items);
+        for (Map.Entry<Long, BigDecimal> entry : couponAmountMap.entrySet()) {
+            System.out.println("Key: " + entry.getKey() + ", Value: " + entry.getValue());
+        }
+    }
 
 
     @Autowired

--
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