[#131] feat : 월별 거래량 조회 (#132)

1. ADMIN 권한을 가진 사용자가 연도별 검색을 통해 1월~12월 거래량을 확인할 수 있다.

issue number : #131

src/main/java/com/flab/shoeauction/controller/TradeApiController.java

@@ -5,13 +5,16 @@
 import com.flab.shoeauction.controller.dto.TradeDto;
 import com.flab.shoeauction.controller.dto.TradeDto.ChangeRequest;
 import com.flab.shoeauction.controller.dto.TradeDto.ImmediateTradeRequest;
+import com.flab.shoeauction.controller.dto.TradeDto.MonthlyTradingVolumesResponse;
 import com.flab.shoeauction.controller.dto.TradeDto.ReasonRequest;
 import com.flab.shoeauction.controller.dto.TradeDto.TrackingNumberRequest;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeInfoResponse;
+import com.flab.shoeauction.controller.dto.TradeDto.TradeMonthSearchCondition;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeResource;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeSearchCondition;
 import com.flab.shoeauction.domain.users.common.UserLevel;
 import com.flab.shoeauction.service.TradeService;
+import java.util.List;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -127,4 +130,10 @@ public Page<TradeInfoResponse> getTradeInfos(TradeSearchCondition tradeSearchCon
         Pageable pageable) {
         return tradeService.getTradeInfos(tradeSearchCondition, pageable);
     }
+
+    @LoginCheck(authority =UserLevel.ADMIN)
+    @GetMapping("/month-volumes")
+    public List<MonthlyTradingVolumesResponse> getMonthVolumes(TradeMonthSearchCondition tradeMonthSearchCondition) {
+        return tradeService.getMonthlyTradingVolumes(tradeMonthSearchCondition);
+    }
 }

src/main/java/com/flab/shoeauction/controller/dto/TradeDto.java

@@ -176,6 +176,7 @@ public boolean isSearchByBuyer() {
     @Getter
     @NoArgsConstructor
     public static class TradeInfoResponse {
+
         private Long id;
         private TradeStatus status;
 
@@ -189,6 +190,7 @@ public TradeInfoResponse(Long id, TradeStatus status) {
     @Getter
     @NoArgsConstructor
     public static class TradeCompleteInfo {
+
         private double productSize;
         private Long price;
         private LocalDateTime completeTime;
@@ -200,4 +202,18 @@ public TradeCompleteInfo(double productSize, Long price, LocalDateTime completeT
             this.completeTime = completeTime;
         }
     }
-}
+
+    @Getter
+    @NoArgsConstructor
+    public static class TradeMonthSearchCondition {
+        private String year;
+    }
+
+    @Getter
+    @NoArgsConstructor
+    public static class MonthlyTradingVolumesResponse {
+        private String date;
+        private Long count;
+    }
+}
+

src/main/java/com/flab/shoeauction/domain/trade/SearchTradeRepository.java

@@ -1,14 +1,21 @@
 package com.flab.shoeauction.domain.trade;
 
+import com.flab.shoeauction.controller.dto.TradeDto.MonthlyTradingVolumesResponse;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeInfoResponse;
+import com.flab.shoeauction.controller.dto.TradeDto.TradeMonthSearchCondition;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeSearchCondition;
 import com.flab.shoeauction.domain.users.user.User;
+import java.util.List;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 
 public interface SearchTradeRepository {
 
     boolean existsProgressingByUser(User user);
 
-    Page<TradeInfoResponse> searchByTradeStatusAndTradeId(TradeSearchCondition searchCondition, Pageable pageable);
+    Page<TradeInfoResponse> searchByTradeStatusAndTradeId(TradeSearchCondition searchCondition,
+        Pageable pageable);
+
+    List<MonthlyTradingVolumesResponse> searchTradeVolumeByMonth(
+        TradeMonthSearchCondition tradeMonthSearchCondition);
 }

src/main/java/com/flab/shoeauction/domain/trade/SearchTradeRepositoryImpl.java

@@ -2,12 +2,17 @@
 
 import static com.flab.shoeauction.domain.trade.QTrade.trade;
 
+import com.flab.shoeauction.controller.dto.TradeDto.MonthlyTradingVolumesResponse;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeInfoResponse;
+import com.flab.shoeauction.controller.dto.TradeDto.TradeMonthSearchCondition;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeSearchCondition;
 import com.flab.shoeauction.domain.users.user.User;
 import com.querydsl.core.QueryResults;
+import com.querydsl.core.types.ConstantImpl;
 import com.querydsl.core.types.Projections;
 import com.querydsl.core.types.dsl.BooleanExpression;
+import com.querydsl.core.types.dsl.Expressions;
+import com.querydsl.core.types.dsl.StringTemplate;
 import com.querydsl.jpa.impl.JPAQueryFactory;
 import java.util.List;
 import lombok.RequiredArgsConstructor;
@@ -54,7 +59,32 @@ public Page<TradeInfoResponse> searchByTradeStatusAndTradeId(TradeSearchConditio
         }
 
         return searchByTradeId(searchRequest.getTradeId(), pageable);
+    }
+
+    @Override
+    public List<MonthlyTradingVolumesResponse> searchTradeVolumeByMonth(
+        TradeMonthSearchCondition tradeMonthSearchCondition) {
+
+        StringTemplate dateFormat = Expressions.stringTemplate(
+            "DATE_FORMAT({0}, {1})", trade.modifiedDate, ConstantImpl.create("%Y-%m"));
+
+        List<MonthlyTradingVolumesResponse> results = jpaQueryFactory
+            .select(Projections.fields(MonthlyTradingVolumesResponse.class,
+                trade.id.count().as("count"),
+                dateFormat.as("date")
+            )).from(trade)
+            .where(statusEqAndDateContains(tradeMonthSearchCondition, dateFormat))
+            .groupBy(dateFormat)
+            .fetch();
+
+        return results;
+    }
 
+    private BooleanExpression statusEqAndDateContains(
+        TradeMonthSearchCondition tradeMonthSearchCondition,
+        StringTemplate dateFormat) {
+        return trade.status.eq(TradeStatus.TRADE_COMPLETE).and(dateFormat.contains(
+            tradeMonthSearchCondition.getYear()));
     }
 
     private Page<TradeInfoResponse> searchByTradeId(Long tradeId, Pageable pageable) {

src/main/java/com/flab/shoeauction/service/TradeService.java

@@ -7,8 +7,10 @@
 import com.flab.shoeauction.controller.dto.ProductDto.ProductInfoByTrade;
 import com.flab.shoeauction.controller.dto.TradeDto.ChangeRequest;
 import com.flab.shoeauction.controller.dto.TradeDto.ImmediateTradeRequest;
+import com.flab.shoeauction.controller.dto.TradeDto.MonthlyTradingVolumesResponse;
 import com.flab.shoeauction.controller.dto.TradeDto.SaveRequest;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeInfoResponse;
+import com.flab.shoeauction.controller.dto.TradeDto.TradeMonthSearchCondition;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeResource;
 import com.flab.shoeauction.controller.dto.TradeDto.TradeSearchCondition;
 import com.flab.shoeauction.controller.dto.UserDto.TradeUserInfo;
@@ -23,6 +25,7 @@
 import com.flab.shoeauction.exception.user.NotAuthorizedException;
 import com.flab.shoeauction.exception.user.UserNotFoundException;
 import com.flab.shoeauction.service.message.MessageService;
+import java.util.List;
 import lombok.RequiredArgsConstructor;
 import org.springframework.cache.annotation.CacheEvict;
 import org.springframework.data.domain.Page;
@@ -218,4 +221,9 @@ public void confirmPurchase(Long tradeId, String email) {
 
         pointService.salesPointReceive(trade.getSeller(), trade.getPrice());
     }
+
+    public List<MonthlyTradingVolumesResponse> getMonthlyTradingVolumes(
+        TradeMonthSearchCondition tradeMonthSearchCondition) {
+        return tradeRepository.searchTradeVolumeByMonth(tradeMonthSearchCondition);
+    }
 }