Merge pull request #246 from techeer-sv/BE/#245

BE/#245 쪽지 상제 조회 기능 구현

backend/src/main/java/com/graphy/backend/domain/message/controller/MessageController.java

@@ -3,6 +3,7 @@
 import com.graphy.backend.domain.auth.util.annotation.CurrentUser;
 import com.graphy.backend.domain.member.domain.Member;
 import com.graphy.backend.domain.message.dto.request.CreateMessageRequest;
+import com.graphy.backend.domain.message.dto.response.GetMessageDetailResponse;
 import com.graphy.backend.domain.message.service.MessageService;
 import com.graphy.backend.global.result.ResultCode;
 import com.graphy.backend.global.result.ResultResponse;
@@ -13,10 +14,7 @@
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 @Tag(name = "MessageController", description = "쪽지 관련 API")
 @RestController
@@ -33,4 +31,10 @@ public ResponseEntity<ResultResponse> messageAdd(@Validated @RequestBody CreateM
                 .body(ResultResponse.of(ResultCode.MESSAGE_CREATE_SUCCESS));
     }
 
+    @Operation(summary = "findMessage", description = "쪽지 상세 조회")
+    @GetMapping("/{messageId}")
+    public ResponseEntity<ResultResponse> messageDetails(@PathVariable Long messageId) {
+        GetMessageDetailResponse result = messageService.findMessageById(messageId);
+        return ResponseEntity.ok(ResultResponse.of(ResultCode.MESSAGE_GET_SUCCESS, result));
+    }
 }

backend/src/main/java/com/graphy/backend/domain/message/domain/Message.java

@@ -1,6 +1,7 @@
 package com.graphy.backend.domain.message.domain;
 
 import com.graphy.backend.domain.member.domain.Member;
+import com.graphy.backend.global.common.BaseEntity;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Getter;
@@ -13,7 +14,7 @@
 @Builder
 @NoArgsConstructor
 @AllArgsConstructor
-public class Message {
+public class Message extends BaseEntity {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;

backend/src/main/java/com/graphy/backend/domain/message/dto/response/GetMessageDetailResponse.java

@@ -0,0 +1,29 @@
+package com.graphy.backend.domain.message.dto.response;
+
+import com.graphy.backend.domain.message.domain.Message;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class GetMessageDetailResponse {
+    private Long senderId;
+    private String memberNickname;
+    private String content;
+    private LocalDateTime sentAt;
+
+    public static GetMessageDetailResponse from(Message message) {
+        return GetMessageDetailResponse.builder()
+                .senderId(message.getSender().getId())
+                .memberNickname(message.getSender().getNickname())
+                .content(message.getContent())
+                .sentAt(message.getCreatedAt())
+                .build();
+    }
+}

backend/src/main/java/com/graphy/backend/domain/message/service/MessageService.java

@@ -2,11 +2,15 @@
 
 import com.graphy.backend.domain.member.domain.Member;
 import com.graphy.backend.domain.member.service.MemberService;
+import com.graphy.backend.domain.message.domain.Message;
 import com.graphy.backend.domain.message.dto.request.CreateMessageRequest;
+import com.graphy.backend.domain.message.dto.response.GetMessageDetailResponse;
 import com.graphy.backend.domain.message.repository.MessageRepository;
 import com.graphy.backend.domain.notification.domain.NotificationType;
 import com.graphy.backend.domain.notification.dto.NotificationDto;
 import com.graphy.backend.domain.notification.service.NotificationService;
+import com.graphy.backend.global.error.ErrorCode;
+import com.graphy.backend.global.error.exception.EmptyResultException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 
@@ -30,4 +34,11 @@ public void addMessage(CreateMessageRequest request, Member loginUser) {
 
         notificationService.addNotification(notificationDto, receiver.getId());
     }
+
+    public GetMessageDetailResponse findMessageById(Long messageId) {
+        Message message = messageRepository.findById(messageId).orElseThrow(
+                () -> new EmptyResultException(ErrorCode.MESSAGE_NOT_EXIST)
+        );
+        return GetMessageDetailResponse.from(message);
+    }
 }

backend/src/main/java/com/graphy/backend/domain/recruitment/service/ApplicationService.java

@@ -28,6 +28,11 @@ public class ApplicationService {
     private final NotificationService notificationService;
     private final TagService tagService;
 
+    /**
+     *TODO
+     * @Transactional 적용
+     * 중복 지원 방지 로직 추가
+     */
     public void addApplication(CreateApplicationRequest request, Member loginUser) {
         Recruitment recruitment = recruitmentService.getRecruitmentById(request.getRecruitmentId());
 

backend/src/main/java/com/graphy/backend/global/error/ErrorCode.java

@@ -39,7 +39,10 @@ public enum ErrorCode {
   APPLICATION_NOT_EXIST(HttpStatus.NOT_FOUND, "AP001", "존재하지 않는 프로젝트 참가 신청서"),
 
   // ChatGPT,
-  REQUEST_TOO_MUCH_TOKENS(HttpStatus.BAD_REQUEST, "AI001", "GPT에 보내야 할 요청 길이 제한 초과");
+  REQUEST_TOO_MUCH_TOKENS(HttpStatus.BAD_REQUEST, "AI001", "GPT에 보내야 할 요청 길이 제한 초과"),
+
+  // Message
+  MESSAGE_NOT_EXIST(HttpStatus.NOT_FOUND, "MSG001", "존재하지 않는 메세지");
 
 
   private final HttpStatus status;

backend/src/main/java/com/graphy/backend/global/result/ResultCode.java

@@ -56,10 +56,8 @@ public enum ResultCode {
     APPLICATION_PAGING_GET_SUCCESS("AP003", "프로젝트 참가 신청서 페이징 조회 성공"),
 
     // Message
-    MESSAGE_CREATE_SUCCESS("MSG001", "쪽지 전송 성공");
-
-
-
+    MESSAGE_CREATE_SUCCESS("MSG001", "쪽지 전송 성공"),
+    MESSAGE_GET_SUCCESS("MSG002", "쪽지 단건 조회 성공");
 
     private final String code;
     private final String message;