promotion：优化砍价活动的分页结果

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/bargain/BargainActivityController.java

@@ -5,13 +5,13 @@ import cn.iocoder.yudao.framework.common.pojo.CommonResult;
 import cn.iocoder.yudao.framework.common.pojo.PageResult;
 import cn.iocoder.yudao.module.product.api.spu.ProductSpuApi;
 import cn.iocoder.yudao.module.product.api.spu.dto.ProductSpuRespDTO;
-import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.BargainActivityCreateReqVO;
-import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.BargainActivityPageReqVO;
-import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.BargainActivityRespVO;
-import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.BargainActivityUpdateReqVO;
+import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.*;
 import cn.iocoder.yudao.module.promotion.convert.bargain.BargainActivityConvert;
 import cn.iocoder.yudao.module.promotion.dal.dataobject.bargain.BargainActivityDO;
+import cn.iocoder.yudao.module.promotion.enums.bargain.BargainRecordStatusEnum;
 import cn.iocoder.yudao.module.promotion.service.bargain.BargainActivityService;
+import cn.iocoder.yudao.module.promotion.service.bargain.BargainHelpService;
+import cn.iocoder.yudao.module.promotion.service.bargain.BargainRecordService;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.tags.Tag;
@@ -21,7 +21,9 @@ import org.springframework.web.bind.annotation.*;
 
 import javax.annotation.Resource;
 import javax.validation.Valid;
+import java.util.Collection;
 import java.util.List;
+import java.util.Map;
 
 import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
 import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertList;
@@ -33,7 +35,12 @@ import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.
 public class BargainActivityController {
 
     @Resource
-    private BargainActivityService activityService;
+    private BargainActivityService bargainActivityService;
+    @Resource
+    private BargainRecordService bargainRecordService;
+    @Resource
+    private BargainHelpService bargainHelpService;
+
     @Resource
     private ProductSpuApi spuApi;
 
@@ -41,14 +48,14 @@ public class BargainActivityController {
     @Operation(summary = "创建砍价活动")
     @PreAuthorize("@ss.hasPermission('promotion:bargain-activity:create')")
     public CommonResult<Long> createBargainActivity(@Valid @RequestBody BargainActivityCreateReqVO createReqVO) {
-        return success(activityService.createBargainActivity(createReqVO));
+        return success(bargainActivityService.createBargainActivity(createReqVO));
     }
 
     @PutMapping("/update")
     @Operation(summary = "更新砍价活动")
     @PreAuthorize("@ss.hasPermission('promotion:bargain-activity:update')")
     public CommonResult<Boolean> updateBargainActivity(@Valid @RequestBody BargainActivityUpdateReqVO updateReqVO) {
-        activityService.updateBargainActivity(updateReqVO);
+        bargainActivityService.updateBargainActivity(updateReqVO);
         return success(true);
     }
 
@@ -57,7 +64,7 @@ public class BargainActivityController {
     @Parameter(name = "id", description = "编号", required = true)
     @PreAuthorize("@ss.hasPermission('promotion:bargain-activity:delete')")
     public CommonResult<Boolean> deleteBargainActivity(@RequestParam("id") Long id) {
-        activityService.deleteBargainActivity(id);
+        bargainActivityService.deleteBargainActivity(id);
         return success(true);
     }
 
@@ -66,23 +73,30 @@ public class BargainActivityController {
     @Parameter(name = "id", description = "编号", required = true, example = "1024")
     @PreAuthorize("@ss.hasPermission('promotion:bargain-activity:query')")
     public CommonResult<BargainActivityRespVO> getBargainActivity(@RequestParam("id") Long id) {
-        return success(BargainActivityConvert.INSTANCE.convert(activityService.getBargainActivity(id)));
+        return success(BargainActivityConvert.INSTANCE.convert(bargainActivityService.getBargainActivity(id)));
     }
 
     @GetMapping("/page")
     @Operation(summary = "获得砍价活动分页")
     @PreAuthorize("@ss.hasPermission('promotion:bargain-activity:query')")
-    public CommonResult<PageResult<BargainActivityRespVO>> getBargainActivityPage(
+    public CommonResult<PageResult<BargainActivityPageItemRespVO>> getBargainActivityPage(
             @Valid BargainActivityPageReqVO pageVO) {
         // 查询砍价活动
-        PageResult<BargainActivityDO> pageResult = activityService.getBargainActivityPage(pageVO);
+        PageResult<BargainActivityDO> pageResult = bargainActivityService.getBargainActivityPage(pageVO);
         if (CollUtil.isEmpty(pageResult.getList())) {
             return success(PageResult.empty(pageResult.getTotal()));
         }
 
         // 拼接数据
         List<ProductSpuRespDTO> spuList = spuApi.getSpuList(convertList(pageResult.getList(), BargainActivityDO::getSpuId));
-        return success(BargainActivityConvert.INSTANCE.convertPage(pageResult, spuList));
+        // 统计数据
+        Collection<Long> activityIds = convertList(pageResult.getList(), BargainActivityDO::getId);
+        Map<Long, Integer> recordUserCountMap = bargainRecordService.getBargainRecordUserCountMap(activityIds, null);
+        Map<Long, Integer> recordSuccessUserCountMap = bargainRecordService.getBargainRecordUserCountMap(activityIds,
+                BargainRecordStatusEnum.SUCCESS.getStatus());
+        Map<Long, Integer> helpUserCountMap = bargainHelpService.getBargainHelpUserCountMap(activityIds);
+        return success(BargainActivityConvert.INSTANCE.convertPage(pageResult, spuList,
+                recordUserCountMap, recordSuccessUserCountMap, helpUserCountMap));
     }
 
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/bargain/vo/BargainActivityBaseVO.java

@@ -36,7 +36,7 @@ public class BargainActivityBaseVO {
 
     @Schema(description = "砍价底价", requiredMode = Schema.RequiredMode.REQUIRED, example = "23")
     @NotNull(message = "砍价底价不能为空")
-    private Integer bargainPrice;
+    private Integer bargainMinPrice;
 
     @Schema(description = "活动库存", requiredMode = Schema.RequiredMode.REQUIRED, example = "23")
     @NotNull(message = "活动库存不能为空")

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/bargain/vo/BargainActivityPageItemRespVO.java

@@ -0,0 +1,46 @@
+package cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+
+import javax.validation.constraints.NotNull;
+import java.time.LocalDateTime;
+
+@Schema(description = "管理后台 - 砍价活动的分页项 Response VO")
+@Data
+@EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
+public class BargainActivityPageItemRespVO extends BargainActivityBaseVO {
+
+    @Schema(description = "活动编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "22901")
+    private Long id;
+
+    @Schema(description = "商品名称", requiredMode = Schema.RequiredMode.REQUIRED, example = "618大促")
+    private String spuName;
+    @Schema(description = "商品主图", requiredMode = Schema.RequiredMode.REQUIRED, example = "https://www.iocoder.cn/xx.png")
+    private String picUrl;
+
+    @Schema(description = "活动状态", requiredMode = Schema.RequiredMode.REQUIRED, example = "0")
+    @NotNull(message = "活动状态不能为空")
+    private Integer status;
+
+    @Schema(description = "活动总库存", requiredMode = Schema.RequiredMode.REQUIRED, example = "23")
+    private Integer totalStock;
+
+    @Schema(description = "创建时间", requiredMode = Schema.RequiredMode.REQUIRED, example = "2022-07-01 23:59:59")
+    private LocalDateTime createTime;
+
+    // ========== 统计字段 ==========
+
+    @Schema(description = "总砍价的用户数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "999")
+    private Integer recordUserCount;
+
+    @Schema(description = "成功砍价的用户数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "500")
+    private Integer recordSuccessUserCount;
+
+    @Schema(description = "帮助砍价的用户数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "888")
+    private Integer helpUserCount;
+
+}

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/bargain/vo/BargainActivityRespVO.java

@@ -5,7 +5,6 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.ToString;
 
-import javax.validation.constraints.NotNull;
 import java.time.LocalDateTime;
 @Schema(description = "管理后台 - 砍价活动 Response VO")
 @Data
@@ -13,23 +12,13 @@ import java.time.LocalDateTime;
 @ToString(callSuper = true)
 public class BargainActivityRespVO extends BargainActivityBaseVO {
 
-    @Schema(description = "商品名称", requiredMode = Schema.RequiredMode.REQUIRED, example = "618大促")
-    private String spuName;
-
-    @Schema(description = "商品主图", requiredMode = Schema.RequiredMode.REQUIRED, example = "https://www.iocoder.cn/xx.png")
-    private String picUrl;
-
     @Schema(description = "活动编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "22901")
     private Long id;
 
-    @Schema(description = "创建时间", requiredMode = Schema.RequiredMode.REQUIRED, example = "2022-07-01 23:59:59")
-    private LocalDateTime createTime;
-
-    @Schema(description = "砍价成功数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "999")
-    private Integer successCount;
-
     @Schema(description = "活动状态", requiredMode = Schema.RequiredMode.REQUIRED, example = "0")
-    @NotNull(message = "活动状态不能为空")
     private Integer status;
 
+    @Schema(description = "创建时间", requiredMode = Schema.RequiredMode.REQUIRED, example = "2022-07-01 23:59:59")
+    private LocalDateTime createTime;
+
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/app/activity/AppActivityController.java

@@ -22,6 +22,7 @@ import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
 @Validated
 public class AppActivityController {
 
+    // TODO @puhui999：可以实现下
     @GetMapping("/list-by-spu-id")
     @Operation(summary = "获得单个商品，近期参与的每个活动") // 每种活动，只返回一个
     @Parameter(name = "spuId", description = "商品编号", required = true)
@@ -41,6 +42,7 @@ public class AppActivityController {
         return success(randomList);
     }
 
+    // TODO @puhui999：可以实现下
     @GetMapping("/list-by-spu-ids")
     @Operation(summary = "获得多个商品，近期参与的每个活动") // 每种活动，只返回一个；key 为 SPU 编号
     @Parameter(name = "spuIds", description = "商品编号数组", required = true)

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/app/bargain/AppBargainActivityController.java

@@ -32,6 +32,7 @@ import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.
 @RequestMapping("/promotion/bargain-activity")
 @Validated
 public class AppBargainActivityController {
+
     @Resource
     private BargainActivityService bargainActivityService;
     @Resource

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/convert/bargain/BargainActivityConvert.java

@@ -6,6 +6,7 @@ import cn.iocoder.yudao.framework.dict.core.util.DictFrameworkUtils;
 import cn.iocoder.yudao.module.product.api.spu.dto.ProductSpuRespDTO;
 import cn.iocoder.yudao.module.product.enums.DictTypeConstants;
 import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.BargainActivityBaseVO;
+import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.BargainActivityPageItemRespVO;
 import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.BargainActivityRespVO;
 import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.BargainActivityUpdateReqVO;
 import cn.iocoder.yudao.module.promotion.controller.app.bargain.vo.activity.AppBargainActivityDetailRespVO;
@@ -38,19 +39,23 @@ public interface BargainActivityConvert {
 
     List<BargainActivityRespVO> convertList(List<BargainActivityDO> list);
 
-    PageResult<BargainActivityRespVO> convertPage(PageResult<BargainActivityDO> page);
+    PageResult<BargainActivityPageItemRespVO> convertPage(PageResult<BargainActivityDO> page);
 
-    default PageResult<BargainActivityRespVO> convertPage(PageResult<BargainActivityDO> page, List<ProductSpuRespDTO> spuList) {
-        PageResult<BargainActivityRespVO> result = convertPage(page);
+    default PageResult<BargainActivityPageItemRespVO> convertPage(PageResult<BargainActivityDO> page, List<ProductSpuRespDTO> spuList,
+                                                                  Map<Long, Integer> recordUserCountMap, Map<Long, Integer> recordSuccessUserCountMap,
+                                                                  Map<Long, Integer> helpUserCountMap) {
+        PageResult<BargainActivityPageItemRespVO> result = convertPage(page);
         // 拼接关联属性
         Map<Long, ProductSpuRespDTO> spuMap = convertMap(spuList, ProductSpuRespDTO::getId);
-        List<BargainActivityRespVO> list = CollectionUtils.convertList(result.getList(), item -> {
+        result.getList().forEach(item -> {
             findAndThen(spuMap, item.getSpuId(), spu -> {
                 item.setPicUrl(spu.getPicUrl()).setSpuName(spu.getName());
             });
-            return item;
+            // 设置统计字段
+            item.setRecordUserCount(recordUserCountMap.getOrDefault(item.getId(), 0))
+                    .setRecordSuccessUserCount(recordSuccessUserCountMap.getOrDefault(item.getId(), 0))
+                    .setHelpUserCount(helpUserCountMap.getOrDefault(item.getId(), 0));
         });
-        result.setList(list);
         return result;
     }
 

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/bargain/BargainActivityDO.java

@@ -67,10 +67,15 @@ public class BargainActivityDO extends BaseDO {
      * 砍价底价，单位：分
      */
     private Integer bargainMinPrice;
+
     /**
-     * 砍价活动库存
+     * 砍价库存(剩余库存砍价时扣减)
      */
     private Integer stock;
+    /**
+     * 砍价总库存
+     */
+    private Integer totalStock;
 
     /**
      * 砍价人数
@@ -99,11 +104,4 @@ public class BargainActivityDO extends BaseDO {
      */
     private Integer randomMaxPrice;
 
-    // ========== 统计字段 ==========
-
-    /**
-     * 砍价成功数量
-     */
-    private Integer successCount;
-
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/bargain/BargainHelpMapper.java

@@ -1,10 +1,19 @@
 package cn.iocoder.yudao.module.promotion.dal.mysql.bargain;
 
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.map.MapUtil;
+import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
 import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
 import cn.iocoder.yudao.module.promotion.dal.dataobject.bargain.BargainHelpDO;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import org.apache.ibatis.annotations.Mapper;
 
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
 @Mapper
 public interface BargainHelpMapper extends BaseMapperX<BargainHelpDO> {
 
@@ -24,4 +33,20 @@ public interface BargainHelpMapper extends BaseMapperX<BargainHelpDO> {
                 .eq(BargainHelpDO::getRecordId, recordId));
     }
 
+
+    default Map<Long, Integer> selectCountByActivityId(Collection<Long> activityIds) {
+        // SQL count 查询
+        List<Map<String, Object>> result = selectMaps(new QueryWrapper<BargainHelpDO>()
+                .select("COUNT(DISTINCT(user_id)) AS userCount, activity_id AS activityId")
+                .in("activity_id", activityIds)
+                .groupBy("activity_id"));
+        if (CollUtil.isEmpty(result)) {
+            return Collections.emptyMap();
+        }
+        // 转换数据
+        return CollectionUtils.convertMap(result,
+                record -> MapUtil.getLong(record, "activityId"),
+                record -> MapUtil.getInt(record, "userCount" ));
+    }
+
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/bargain/BargainRecordMapper.java

@@ -1,11 +1,18 @@
 package cn.iocoder.yudao.module.promotion.dal.mysql.bargain;
 
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.map.MapUtil;
+import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
 import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
 import cn.iocoder.yudao.module.promotion.dal.dataobject.bargain.BargainRecordDO;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import org.apache.ibatis.annotations.Mapper;
 
+import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 
 /**
  * 砍价记录 Mapper
@@ -42,4 +49,20 @@ public interface BargainRecordMapper extends BaseMapperX<BargainRecordDO> {
                 .eq(BargainRecordDO::getBargainPrice, whereBargainPrice));
     }
 
+    default Map<Long, Integer> selectCountByActivityIdsAndStatus(Collection<Long> activityIds, Integer status) {
+        // SQL count 查询
+        List<Map<String, Object>> result = selectMaps(new QueryWrapper<BargainRecordDO>()
+                .select("COUNT(DISTINCT(user_id)) AS userCount, activity_id AS activityId")
+                .in("activity_id", activityIds)
+                .eq(status != null, "status", status)
+                .groupBy("activity_id"));
+        if (CollUtil.isEmpty(result)) {
+            return Collections.emptyMap();
+        }
+        // 转换数据
+        return CollectionUtils.convertMap(result,
+                record -> MapUtil.getLong(record, "activityId"),
+                record -> MapUtil.getInt(record, "userCount" ));
+    }
+
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/bargain/BargainActivityServiceImpl.java

@@ -52,7 +52,8 @@ public class BargainActivityServiceImpl implements BargainActivityService {
 
         // 插入砍价活动
         BargainActivityDO activityDO = BargainActivityConvert.INSTANCE.convert(createReqVO)
-                .setStatus(CommonStatusEnum.ENABLE.getStatus()).setSuccessCount(0);
+                .setTotalStock(createReqVO.getStock())
+                .setStatus(CommonStatusEnum.ENABLE.getStatus());
         bargainActivityMapper.insert(activityDO);
         return activityDO.getId();
     }
@@ -61,9 +62,9 @@ public class BargainActivityServiceImpl implements BargainActivityService {
     @Transactional(rollbackFor = Exception.class)
     public void updateBargainActivity(BargainActivityUpdateReqVO updateReqVO) {
         // 校验存在
-        BargainActivityDO activityDO = validateBargainActivityExists(updateReqVO.getId());
+        BargainActivityDO activity = validateBargainActivityExists(updateReqVO.getId());
         // 校验状态
-        if (ObjectUtil.equal(activityDO.getStatus(), CommonStatusEnum.DISABLE.getStatus())) {
+        if (ObjectUtil.equal(activity.getStatus(), CommonStatusEnum.DISABLE.getStatus())) {
             throw exception(BARGAIN_ACTIVITY_STATUS_DISABLE);
         }
         // 校验商品冲突
@@ -73,6 +74,9 @@ public class BargainActivityServiceImpl implements BargainActivityService {
 
         // 更新
         BargainActivityDO updateObj = BargainActivityConvert.INSTANCE.convert(updateReqVO);
+        if (updateObj.getStock() > activity.getTotalStock()) { // 如果更新的库存大于原来的库存，则更新总库存
+            updateObj.setTotalStock(updateObj.getStock());
+        }
         bargainActivityMapper.updateById(updateObj);
     }
 

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/bargain/BargainHelpService.java

@@ -3,6 +3,9 @@ package cn.iocoder.yudao.module.promotion.service.bargain;
 import cn.iocoder.yudao.module.promotion.controller.app.bargain.vo.help.AppBargainHelpCreateReqVO;
 import cn.iocoder.yudao.module.promotion.dal.dataobject.bargain.BargainHelpDO;
 
+import java.util.Collection;
+import java.util.Map;
+
 /**
  * 砍价助力 Service 接口
  *
@@ -19,4 +22,12 @@ public interface BargainHelpService {
      */
     BargainHelpDO createBargainHelp(Long userId, AppBargainHelpCreateReqVO reqVO);
 
+    /**
+     * 获得助力人数 Map
+     *
+     * @param activityIds 活动编号
+     * @return 助力人数 Map
+     */
+    Map<Long, Integer> getBargainHelpUserCountMap(Collection<Long> activityIds);
+
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/bargain/BargainHelpServiceImpl.java

@@ -15,6 +15,9 @@ import org.springframework.validation.annotation.Validated;
 
 import javax.annotation.Resource;
 
+import java.util.Collection;
+import java.util.Map;
+
 import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
 import static cn.iocoder.yudao.module.promotion.enums.ErrorCodeConstants.*;
 
@@ -99,4 +102,9 @@ public class BargainHelpServiceImpl implements BargainHelpService {
         return reducePrice;
     }
 
+    @Override
+    public Map<Long, Integer> getBargainHelpUserCountMap(Collection<Long> activityIds) {
+        return bargainHelpMapper.selectCountByActivityId(activityIds);
+    }
+
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/bargain/BargainRecordService.java

@@ -5,6 +5,10 @@ import cn.iocoder.yudao.module.promotion.api.bargain.dto.BargainValidateJoinResp
 import cn.iocoder.yudao.module.promotion.controller.app.bargain.vo.record.AppBargainRecordCreateReqVO;
 import cn.iocoder.yudao.module.promotion.dal.dataobject.bargain.BargainRecordDO;
 
+import javax.annotation.Nullable;
+import java.util.Collection;
+import java.util.Map;
+
 /**
  * 砍价记录 service 接口
  *
@@ -55,4 +59,13 @@ public interface BargainRecordService {
      */
     BargainRecordDO getBargainRecord(Long id);
 
+    /**
+     * 获得砍价人数 Map
+     *
+     * @param activityIds 活动编号
+     * @param status 砍价记录状态
+     * @return 砍价人数 Map
+     */
+    Map<Long, Integer> getBargainRecordUserCountMap(Collection<Long> activityIds, @Nullable Integer status);
+
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/bargain/BargainRecordServiceImpl.java

@@ -12,7 +12,10 @@ import cn.iocoder.yudao.module.promotion.enums.bargain.BargainRecordStatusEnum;
 import org.springframework.stereotype.Service;
 import org.springframework.validation.annotation.Validated;
 
+import javax.annotation.Nullable;
 import javax.annotation.Resource;
+import java.util.Collection;
+import java.util.Map;
 import java.util.Objects;
 
 import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
@@ -92,4 +95,9 @@ public class BargainRecordServiceImpl implements BargainRecordService {
         return bargainRecordMapper.selectById(id);
     }
 
+    @Override
+    public Map<Long, Integer> getBargainRecordUserCountMap(Collection<Long> activityIds, @Nullable Integer status) {
+        return bargainRecordMapper.selectCountByActivityIdsAndStatus(activityIds, status);
+    }
+
 }