프로젝트 기술 스택 및 멤버 카테고리 별로 조회되도록 응답 객체 수정

src/main/java/sixgaezzang/sidepeek/projects/dto/response/MemberSummary.java

@@ -1,28 +1,24 @@
 package sixgaezzang.sidepeek.projects.dto.response;
 
 import io.swagger.v3.oas.annotations.media.Schema;
+import java.util.List;
 import lombok.Builder;
-import sixgaezzang.sidepeek.projects.domain.member.Member;
-import sixgaezzang.sidepeek.users.domain.User;
 import sixgaezzang.sidepeek.users.dto.response.UserSummary;
 
 @Schema(description = "프로젝트 멤버 정보")
 @Builder
 public record MemberSummary(
-    @Schema(description = "프로젝트 멤버 식별자", example = "1")
-    Long id,
     @Schema(description = "프로젝트 멤버 역할", example = "백엔드")
     String role,
     @Schema(description = "프로젝트 멤버 회원/비회원 상세 정보")
-    UserSummary userSummary
+    List<UserSummary> userSummary
 ) {
 
-    public static MemberSummary from(Member member) {
-        User user = member.getUser();
-        UserSummary userSummary = (user != null) ? UserSummary.from(user, member.getNickname()) :
-            UserSummary.from(member.getNickname());
-
-        return new MemberSummary(member.getId(), member.getRole(), userSummary);
+    public static MemberSummary of(String role, List<UserSummary> members) {
+        return MemberSummary.builder()
+            .role(role)
+            .userSummary(members)
+            .build();
     }
 
 }

src/main/java/sixgaezzang/sidepeek/projects/dto/response/ProjectSkillSummary.java

@@ -1,26 +1,23 @@
 package sixgaezzang.sidepeek.projects.dto.response;
 
 import io.swagger.v3.oas.annotations.media.Schema;
+import java.util.List;
 import lombok.Builder;
-import sixgaezzang.sidepeek.projects.domain.ProjectSkill;
 import sixgaezzang.sidepeek.skill.dto.response.SkillResponse;
 
 @Schema(description = "프로젝트 기술 스택 정보")
 @Builder
 public record ProjectSkillSummary(
-    @Schema(description = "프로젝트 기술 스택 식별자", example = "1")
-    Long id,
     @Schema(description = "프로젝트 기술 스택 카테고리", example = "프론트엔드")
     String category,
     @Schema(description = "프로젝트 기술 스택 상세 정보")
-    SkillResponse skill
+    List<SkillResponse> skill
 ) {
 
-    public static ProjectSkillSummary from(ProjectSkill projectSkill) {
+    public static ProjectSkillSummary of(String category, List<SkillResponse> skill) {
         return ProjectSkillSummary.builder()
-            .id(projectSkill.getId())
-            .category(projectSkill.getCategory())
-            .skill(SkillResponse.from(projectSkill.getSkill()))
+            .category(category)
+            .skill(skill)
             .build();
     }
 

src/main/java/sixgaezzang/sidepeek/projects/repository/member/MemberRepository.java → src/main/java/sixgaezzang/sidepeek/projects/repository/MemberRepository.java

@@ -1,11 +1,11 @@
-package sixgaezzang.sidepeek.projects.repository.member;
+package sixgaezzang.sidepeek.projects.repository;
 
 import java.util.List;
 import org.springframework.data.jpa.repository.JpaRepository;
 import sixgaezzang.sidepeek.projects.domain.Project;
 import sixgaezzang.sidepeek.projects.domain.member.Member;
 
-public interface MemberRepository extends JpaRepository<Member, Long>, MemberRepositoryCustom {
+public interface MemberRepository extends JpaRepository<Member, Long> {
 
     List<Member> findAllByProject(Project project);
 

src/main/java/sixgaezzang/sidepeek/projects/service/MemberService.java

@@ -1,9 +1,13 @@
 package sixgaezzang.sidepeek.projects.service;
 
+import static java.util.stream.Collectors.groupingBy;
+import static java.util.stream.Collectors.mapping;
+import static java.util.stream.Collectors.toList;
 import static sixgaezzang.sidepeek.projects.util.validation.MemberValidator.validateMembers;
 import static sixgaezzang.sidepeek.projects.util.validation.ProjectValidator.validateProject;
 
 import java.util.List;
+import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
 import lombok.RequiredArgsConstructor;
@@ -13,8 +17,9 @@
 import sixgaezzang.sidepeek.projects.domain.member.Member;
 import sixgaezzang.sidepeek.projects.dto.request.SaveMemberRequest;
 import sixgaezzang.sidepeek.projects.dto.response.MemberSummary;
-import sixgaezzang.sidepeek.projects.repository.member.MemberRepository;
+import sixgaezzang.sidepeek.projects.repository.MemberRepository;
 import sixgaezzang.sidepeek.users.domain.User;
+import sixgaezzang.sidepeek.users.dto.response.UserSummary;
 import sixgaezzang.sidepeek.users.service.UserService;
 
 @Service
@@ -26,7 +31,8 @@ public class MemberService {
     private final UserService userService;
 
     @Transactional
-    public List<MemberSummary> cleanAndSaveAll(Project project, List<SaveMemberRequest> memberSaveRequests) {
+    public List<MemberSummary> cleanAndSaveAll(Project project,
+        List<SaveMemberRequest> memberSaveRequests) {
         validateProject(project);
         validateMembers(project.getOwnerId(), memberSaveRequests);
 
@@ -39,14 +45,13 @@ public List<MemberSummary> cleanAndSaveAll(Project project, List<SaveMemberReque
             )
             .toList();
 
-        return memberRepository.saveAll(members)
-            .stream()
-            .map(MemberSummary::from)
-            .toList();
+        return generateMemberSummaries(memberRepository.saveAll(members));
     }
 
-    public List<MemberSummary> findAllWithUser(Project project) {
-        return memberRepository.findAllWithUser(project);
+    public List<MemberSummary> findAll(Project project) {
+        List<Member> members = memberRepository.findAllByProject(project);
+
+        return generateMemberSummaries(members);
     }
 
     public Optional<User> findFellowMemberByProject(Long userId, Project project) {
@@ -62,4 +67,15 @@ private void cleanExistingMembersByProject(Project project) {
             memberRepository.deleteAllByProject(project);
         }
     }
+
+    private List<MemberSummary> generateMemberSummaries(List<Member> members) {
+        Map<String, List<UserSummary>> memberMap = members.stream()
+            .collect(groupingBy(Member::getRole,
+                mapping(member -> UserSummary.of(member.getUser(), member.getNickname()),
+                    toList())));
+
+        return memberMap.entrySet().stream()
+            .map(entry -> MemberSummary.of(entry.getKey(), entry.getValue()))
+            .toList();
+    }
 }

src/main/java/sixgaezzang/sidepeek/projects/service/ProjectService.java

@@ -67,11 +67,14 @@ public ProjectResponse save(Long loginId, SaveProjectRequest request) {
         Project project = request.toEntity();
         projectRepository.save(project);
 
-        List<ProjectSkillSummary> techStacks = projectSkillService.cleanAndSaveAll(project, request.techStacks());
+        List<ProjectSkillSummary> techStacks = projectSkillService.cleanAndSaveAll(project,
+            request.techStacks());
         List<MemberSummary> members = memberService.cleanAndSaveAll(project, request.members());
-        List<OverviewImageSummary> overviewImages = fileService.cleanAndSaveAll(project, request.overviewImageUrls());
+        List<OverviewImageSummary> overviewImages = fileService.cleanAndSaveAll(project,
+            request.overviewImageUrls());
 
-        return ProjectResponse.from(project, overviewImages, techStacks, members, Collections.emptyList(), null);
+        return ProjectResponse.from(project, overviewImages, techStacks, members,
+            Collections.emptyList(), null);
     }
 
     public Project getById(Long projectId) {
@@ -96,12 +99,9 @@ public ProjectResponse findById(String ip, Long loginId, Long projectId) {
             .map(OverviewImageSummary::from)
             .toList();
 
-        List<ProjectSkillSummary> techStacks = projectSkillService.findAll(project)
-            .stream()
-            .map(ProjectSkillSummary::from)
-            .toList();
+        List<ProjectSkillSummary> techStacks = projectSkillService.findAll(project);
 
-        List<MemberSummary> members = memberService.findAllWithUser(project);
+        List<MemberSummary> members = memberService.findAll(project);
 
         List<CommentResponse> comments = commentService.findAll(loginId, project);
 
@@ -151,9 +151,11 @@ public ProjectResponse update(Long loginId, Long projectId, UpdateProjectRequest
 
         project.update(request);
 
-        List<ProjectSkillSummary> techStacks = projectSkillService.cleanAndSaveAll(project, request.techStacks());
+        List<ProjectSkillSummary> techStacks = projectSkillService.cleanAndSaveAll(project,
+            request.techStacks());
         List<MemberSummary> members = memberService.cleanAndSaveAll(project, request.members());
-        List<OverviewImageSummary> overviewImages = fileService.cleanAndSaveAll(project, request.overviewImageUrls());
+        List<OverviewImageSummary> overviewImages = fileService.cleanAndSaveAll(project,
+            request.overviewImageUrls());
 
         List<CommentResponse> comments = commentService.findAll(loginId, project);
 

src/main/java/sixgaezzang/sidepeek/projects/service/ProjectSkillService.java

@@ -1,9 +1,13 @@
 package sixgaezzang.sidepeek.projects.service;
 
+import static java.util.stream.Collectors.groupingBy;
+import static java.util.stream.Collectors.mapping;
+import static java.util.stream.Collectors.toList;
 import static sixgaezzang.sidepeek.common.util.validation.TechStackValidator.validateTechStacks;
 import static sixgaezzang.sidepeek.projects.util.validation.ProjectValidator.validateProject;
 
 import java.util.List;
+import java.util.Map;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -12,6 +16,7 @@
 import sixgaezzang.sidepeek.projects.domain.ProjectSkill;
 import sixgaezzang.sidepeek.projects.dto.response.ProjectSkillSummary;
 import sixgaezzang.sidepeek.projects.repository.ProjectSkillRepository;
+import sixgaezzang.sidepeek.skill.dto.response.SkillResponse;
 import sixgaezzang.sidepeek.skill.serivce.SkillService;
 
 @Service
@@ -22,23 +27,23 @@ public class ProjectSkillService {
     private final ProjectSkillRepository projectSkillRepository;
     private final SkillService skillService;
 
-    public List<ProjectSkill> findAll(Project project) {
-        return projectSkillRepository.findAllByProject(project);
+    public List<ProjectSkillSummary> findAll(Project project) {
+        List<ProjectSkill> skills = projectSkillRepository.findAllByProject(project);
+
+        return generateProjectSkillSummaries(skills);
     }
 
     @Transactional
-    public List<ProjectSkillSummary> cleanAndSaveAll(Project project, List<SaveTechStackRequest> techStacks) {
+    public List<ProjectSkillSummary> cleanAndSaveAll(Project project,
+        List<SaveTechStackRequest> techStacks) {
         validateProject(project);
         validateTechStacks(techStacks);
 
         cleanExistingProjectSkillsByProject(project);
 
         List<ProjectSkill> skills = convertAllToEntity(project, techStacks);
 
-        return projectSkillRepository.saveAll(skills)
-            .stream()
-            .map(ProjectSkillSummary::from)
-            .toList();
+        return generateProjectSkillSummaries(projectSkillRepository.saveAll(skills));
     }
 
     private void cleanExistingProjectSkillsByProject(Project project) {
@@ -47,7 +52,8 @@ private void cleanExistingProjectSkillsByProject(Project project) {
         }
     }
 
-    private List<ProjectSkill> convertAllToEntity(Project project, List<SaveTechStackRequest> techStacks) {
+    private List<ProjectSkill> convertAllToEntity(Project project,
+        List<SaveTechStackRequest> techStacks) {
         return techStacks.stream()
             .map(techStack -> techStack.toProjectSkill(
                 project,
@@ -56,4 +62,15 @@ private List<ProjectSkill> convertAllToEntity(Project project, List<SaveTechStac
             .toList();
     }
 
+    private List<ProjectSkillSummary> generateProjectSkillSummaries(List<ProjectSkill> skills) {
+        Map<String, List<SkillResponse>> skillMap = skills.stream()
+            .collect(groupingBy(ProjectSkill::getCategory,
+                mapping(skill -> SkillResponse.from(skill.getSkill()),
+                    toList())));
+
+        return skillMap.entrySet().stream()
+            .map(entry -> ProjectSkillSummary.of(entry.getKey(), entry.getValue()))
+            .toList();
+    }
+
 }

src/main/java/sixgaezzang/sidepeek/users/dto/response/UserSummary.java

@@ -13,14 +13,11 @@
 public record UserSummary(
     @Schema(description = "회원 식별자(비회원은 null)", nullable = true, example = "1")
     Long id,
-
     @Schema(description = "소셜 로그인 회원 여부", nullable = true, example = "false")
     @JsonInclude(JsonInclude.Include.NON_NULL)
     Boolean isSocialLogin,
-
     @Schema(description = "회원/비회원 닉네임", example = "의진")
     String nickname,
-
     @Schema(description = "회원 프로필 이미지, 비회원이거나 없으면 빈 문자열 반환", nullable = true,
         example = "https://user-images.githubusercontent.com/uijin.png")
     String profileImageUrl
@@ -48,23 +45,15 @@ public static UserSummary from(User user) {
             .build();
     }
 
-    // 멤버(회원)
-    public static UserSummary from(User user, String nickname) {
-        return UserSummary.builder()
-            .id(user.getId())
-            .isSocialLogin(null)
-            .nickname(nickname)
-            .profileImageUrl(user.getProfileImageUrl())
-            .build();
-    }
+    // 멤버(회원, 비회원)
+    public static UserSummary of(User user, String nickname) {
+        Long userId = Objects.isNull(user) ? null : user.getId();
+        String profileImageUrl = Objects.isNull(user) ? BLANK_STRING : user.getProfileImageUrl();
 
-    // 멤버(비회원)
-    public static UserSummary from(String nickname) {
         return UserSummary.builder()
-            .id(null)
-            .isSocialLogin(null)
+            .id(userId)
             .nickname(nickname)
-            .profileImageUrl(BLANK_STRING)
+            .profileImageUrl(profileImageUrl)
             .build();
     }