Feat: 워크스페이스 멤버 추가 구현- S11P21S002-37

backend/src/main/java/com/worlabel/domain/participant/repository/WorkspaceParticipantRepository.java

@@ -8,6 +8,8 @@ import org.springframework.stereotype.Repository;
 public interface WorkspaceParticipantRepository extends JpaRepository<WorkspaceParticipant, Integer> {
 
     boolean existsByMemberIdAndWorkspaceId(Integer memberId, Integer workspaceId);
+
+    boolean existsByWorkspaceIdAndMemberId(Integer workspaceId, Integer memberId);
 }
 
 

backend/src/main/java/com/worlabel/domain/workspace/controller/WorkspaceController.java

@@ -77,4 +77,16 @@ public class WorkspaceController {
         workspaceService.deleteWorkspace(memberId, workspaceId);
         return SuccessResponse.empty();
     }
+
+    @Operation(summary = "워크스페이스 멤버 추가", description = "특정 워크스페이스에 멤버를 추가합니다.")
+    @SwaggerApiSuccess(description = "특정 워크스페이스에 멤버를 성공적으로 추가합니다.")
+    @SwaggerApiError({ErrorCode.BAD_REQUEST, ErrorCode.NOT_AUTHOR, ErrorCode.SERVER_ERROR})
+    @PostMapping("/{workspace_id}/member/{member_id}")
+    public BaseResponse<Void> addWorkspaceMember(
+            @CurrentUser final Integer memberId,
+            @PathVariable("workspace_id") final Integer workspaceId,
+            @PathVariable("member_id") final Integer newMemberId) {
+        workspaceService.addWorkspaceMember(memberId, workspaceId, newMemberId);
+        return SuccessResponse.empty();
+    }
 }

backend/src/main/java/com/worlabel/domain/workspace/service/WorkspaceService.java

@@ -78,6 +78,14 @@ public class WorkspaceService {
         workspaceRepository.delete(workspace);
     }
 
+    public void addWorkspaceMember(final Integer memberId, final Integer workspaceId, final Integer newMemberId) {
+        Workspace workspace = getWorkspaceWithWriter(memberId, workspaceId);
+        checkWorkspaceMember(workspaceId, newMemberId);
+        Member member = getMember(newMemberId);
+
+        workspaceParticipantRepository.save(WorkspaceParticipant.of(workspace, member));
+    }
+
     private Member getMember(final Integer memberId) {
         return memberRepository.findById(memberId)
                 .orElseThrow(() -> new CustomException(ErrorCode.USER_NOT_FOUND));
@@ -97,4 +105,10 @@ public class WorkspaceService {
             throw new CustomException(ErrorCode.NOT_AUTHOR);
         }
     }
+
+    private void checkWorkspaceMember(final Integer workspaceId, final Integer newMemberId) {
+        if (workspaceParticipantRepository.existsByWorkspaceIdAndMemberId(workspaceId, newMemberId)) {
+            throw new CustomException(ErrorCode.EARLY_ADD_MEMBER);
+        }
+    }
 }

backend/src/main/java/com/worlabel/global/exception/ErrorCode.java

@@ -30,13 +30,15 @@ public enum ErrorCode {
     // Workspace - 3000
     NOT_AUTHOR(HttpStatus.FORBIDDEN, 3001, "작성자가 아닙니다. 이 작업을 수행할 권한이 없습니다."),
     WORKSPACE_NOT_FOUND(HttpStatus.BAD_REQUEST, 3002, "해당 워크스페이스는 존재하지 않습니다."),
+    EARLY_ADD_MEMBER(HttpStatus.BAD_REQUEST, 3003, "이미 추가된 멤버입니다."),
 
     // Project - 4000
     PROJECT_NOT_FOUND(HttpStatus.NOT_FOUND, 4000, "프로젝트를 찾을 수 없습니다"),
 
-    // Participant - 5000
+    // Participant - 5000,
     PARTICIPANT_UNAUTHORIZED(HttpStatus.UNAUTHORIZED, 5000, "해당 프로젝트에 접근 권한이 없습니다."),
 
+
     ;
 
     private final HttpStatus status;