feat(recruit-board): 모집글 Validator 추가

Author: leebs0521

src/main/java/com/somemore/domains/recruitboard/domain/RecruitBoard.java

@@ -58,7 +58,7 @@ public RecruitBoard(UUID centerId, Long locationId, String title, String content
         this.imgUrl = imgUrl;
     }
 
-    public boolean isWriter(UUID centerId) {
+    public boolean isAuthor(UUID centerId) {
         return this.centerId.equals(centerId);
     }
 

src/main/java/com/somemore/domains/recruitboard/service/validator/RecruitBoardValidator.java

@@ -0,0 +1,31 @@
+package com.somemore.domains.recruitboard.service.validator;
+
+import com.somemore.domains.recruitboard.domain.RecruitBoard;
+import com.somemore.global.exception.BadRequestException;
+import org.springframework.stereotype.Component;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+import static com.somemore.global.exception.ExceptionMessage.INVALID_RECRUIT_BOARD_TIME;
+import static com.somemore.global.exception.ExceptionMessage.UNAUTHORIZED_RECRUIT_BOARD;
+
+@Component
+public class RecruitBoardValidator {
+
+    public void validateRecruitBoardTime(LocalDateTime startDateTime, LocalDateTime endDateTime) {
+        if (endDateTime.isAfter(startDateTime)) {
+            return;
+        }
+
+        throw new BadRequestException(INVALID_RECRUIT_BOARD_TIME);
+    }
+
+    public void validateAuthor(RecruitBoard recruitBoard, UUID centerId) {
+        if (recruitBoard.isAuthor(centerId)) {
+            return;
+        }
+
+        throw new BadRequestException(UNAUTHORIZED_RECRUIT_BOARD.getMessage());
+    }
+}

src/main/java/com/somemore/global/exception/ExceptionMessage.java

@@ -28,6 +28,7 @@ public enum ExceptionMessage {
     // RECRUIT BOARD
     NOT_EXISTS_RECRUIT_BOARD("존재하지 않는 봉사 모집글입니다."),
     UNAUTHORIZED_RECRUIT_BOARD("해당 봉사 모집글에 권한이 없습니다."),
+    INVALID_RECRUIT_BOARD_TIME("종료 시간은 시작 시간보다 이후여야 합니다."),
 
     // IMAGE
     UPLOAD_FAILED("파일 업로드에 실패했습니다."),