✨ feat: 사용자별 메시지 송/수신기록 조회 API (#117)

src/main/java/slvtwn/khu/toyouserver/application/RollingPaperCommandFacade.java

@@ -0,0 +1,21 @@
+package slvtwn.khu.toyouserver.application;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import slvtwn.khu.toyouserver.dto.RollingPaperExchangeCountResponse;
+
+@Component
+@RequiredArgsConstructor
+public class RollingPaperCommandFacade {
+
+	private final RollingPaperService rollingPaperService;
+	private final UserService userService;
+
+	public RollingPaperExchangeCountResponse getExchangeCount(Long userId) {
+		return RollingPaperExchangeCountResponse.of(
+				userService.getProfile(userId).name(),
+				rollingPaperService.countSentRollingPapers(userId),
+				rollingPaperService.countReceivedRollingPapers(userId)
+		);
+	}
+}

src/main/java/slvtwn/khu/toyouserver/application/RollingPaperService.java

@@ -90,6 +90,17 @@ public RollingPaperPagedResponse findReceivedRollingPapers(Long userId, Long gro
 		return RollingPaperPagedResponse.from(cursorPageInfo, responses);
 	}
 
+	public Long countSentRollingPapers(Long userId) {
+		return rollingPaperRepository.countAllBySenderSnapshot_SenderId(userId);
+	}
+
+	public Long countReceivedRollingPapers(Long userId) {
+		List<Member> members = memberRepository.findByUserId(userId);
+		return rollingPaperRepository.findAllByMemberIn(members).stream()
+				.filter(rollingPaper -> !rollingPaper.getSenderSnapshot().getSenderId().equals(userId))
+				.count();
+	}
+
 	private List<Sticker> parseStickers(RollingPaperRequest request, RollingPaper rollingPaper) {
 		return request.stickers().stream()
 				.map(each -> new Sticker(rollingPaper, each.imageUrl(), each.x(), each.y(),

src/main/java/slvtwn/khu/toyouserver/dto/RollingPaperExchangeCountResponse.java

@@ -0,0 +1,7 @@
+package slvtwn.khu.toyouserver.dto;
+
+public record RollingPaperExchangeCountResponse(String userName, Long sentCount, Long receivedCount) {
+	public static RollingPaperExchangeCountResponse of(String userName, Long sentCount, Long receivedCount) {
+		return new RollingPaperExchangeCountResponse(userName, sentCount, receivedCount);
+	}
+}

src/main/java/slvtwn/khu/toyouserver/persistance/MemberRepository.java

@@ -14,6 +14,8 @@ public interface MemberRepository extends JpaRepository<Member, Long> {
 
 	List<Member> findByUser(User user);
 
+	List<Member> findByUserId(Long userId);
+
 	@Query("select m from Member m join m.user u where m.group = :group and u.name like %:pattern%")
 	List<Member> findByGroupAndUserNameLike(Group group, String pattern);
 

src/main/java/slvtwn/khu/toyouserver/persistance/RollingPaperRepository.java

@@ -18,5 +18,9 @@ Slice<RollingPaper> findByMembersWithCursor(@Param("memberIds") List<Long> membe
 
 	List<RollingPaper> findAllByMemberIn(List<Member> members);
 
+	Long countAllBySenderSnapshot_SenderId(Long senderId);
+
+	List<RollingPaper> findAllBySenderSnapshot_SenderId(Long senderId);
+
 	void deleteAllByMemberIn(List<Member> members);
 }

src/main/java/slvtwn/khu/toyouserver/presentation/RollingPaperFolderController.java

@@ -0,0 +1,24 @@
+package slvtwn.khu.toyouserver.presentation;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import slvtwn.khu.toyouserver.application.RollingPaperCommandFacade;
+import slvtwn.khu.toyouserver.common.authentication.UserAuthentication;
+import slvtwn.khu.toyouserver.common.response.ToyouResponse;
+import slvtwn.khu.toyouserver.dto.RollingPaperExchangeCountResponse;
+
+@RequestMapping("/rollingpapers/folders")
+@RequiredArgsConstructor
+@RestController
+public class RollingPaperFolderController {
+
+	private final RollingPaperCommandFacade rollingPaperCommandFacade;
+
+	@GetMapping("/info")
+	public ToyouResponse<RollingPaperExchangeCountResponse> findRollingPaperExchangeCount(
+			@UserAuthentication Long userId) {
+		return ToyouResponse.from(rollingPaperCommandFacade.getExchangeCount(userId));
+	}
+}