Feature/47 커뮤니티 게시글 삭제 기능

src/main/java/com/somemore/community/domain/CommunityBoard.java

@@ -48,4 +48,8 @@ public CommunityBoard(UUID writerId, String title, String content, String imgUrl
         this.content = content;
         this.imgUrl = imgUrl;
     }
+
+    public boolean isWriter(UUID writerId) {
+        return this.writerId.equals(writerId);
+    }
 }

src/main/java/com/somemore/community/service/command/DeleteCommunityBoardService.java

@@ -0,0 +1,46 @@
+package com.somemore.community.service.command;
+
+import com.somemore.community.domain.CommunityBoard;
+import com.somemore.community.repository.CommunityBoardRepository;
+import com.somemore.community.usecase.command.DeleteCommunityBoardUseCase;
+import com.somemore.global.exception.BadRequestException;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.UUID;
+
+import static com.somemore.global.exception.ExceptionMessage.NOT_EXISTS_COMMUNITY_BOARD;
+import static com.somemore.global.exception.ExceptionMessage.UNAUTHORIZED_COMMUNITY_BOARD;
+
+@RequiredArgsConstructor
+@Transactional
+@Service
+class DeleteCommunityBoardService implements DeleteCommunityBoardUseCase {
+
+    private final CommunityBoardRepository communityBoardRepository;
+
+    @Override
+    public void deleteCommunityBoard(UUID writerId, Long id) {
+        CommunityBoard communityBoard = getCommunityBoardById(id);
+
+        validateWriter(communityBoard, writerId);
+
+        communityBoard.markAsDeleted();
+
+        communityBoardRepository.save(communityBoard);
+    }
+
+    private CommunityBoard getCommunityBoardById(Long id) {
+        return communityBoardRepository.findById(id)
+                .orElseThrow(() -> new BadRequestException(NOT_EXISTS_COMMUNITY_BOARD.getMessage()));
+    }
+
+    private void validateWriter(CommunityBoard communityBoard, UUID writerId) {
+        if (communityBoard.isWriter(writerId)) {
+            return;
+        }
+
+        throw new BadRequestException(UNAUTHORIZED_COMMUNITY_BOARD.getMessage());
+    }
+}

src/main/java/com/somemore/community/usecase/command/DeleteCommunityBoardUseCase.java

@@ -0,0 +1,7 @@
+package com.somemore.community.usecase.command;
+
+import java.util.UUID;
+
+public interface DeleteCommunityBoardUseCase {
+    void deleteCommunityBoard(UUID writerId, Long id);
+}

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

@@ -9,7 +9,8 @@
 public enum ExceptionMessage {
 
     NOT_EXISTS_CENTER("존재하지 않는 기관 ID 입니다."),
-    NOT_EXISTS_COMMUNITY_BOARD("삭제된 게시글 입니다."),
+    NOT_EXISTS_COMMUNITY_BOARD("존재하지 않는 게시글 입니다."),
+    UNAUTHORIZED_COMMUNITY_BOARD("게시글 삭제 권한이 없습니다."),
     NOT_EXISTS_LOCATION("존재하지 않는 위치 ID 입니다."),
     NOT_EXISTS_RECRUIT_BOARD("존재하지 않는 봉사 모집글 ID 입니다."),
     UNAUTHORIZED_RECRUIT_BOARD("자신이 작성한 봉사 모집글이 아닙니다."),

src/test/java/com/somemore/community/service/command/DeleteCommunityBoardServiceTest.java

@@ -0,0 +1,92 @@
+package com.somemore.community.service.command;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+
+import com.somemore.IntegrationTestSupport;
+import com.somemore.community.dto.request.CommunityBoardCreateRequestDto;
+import com.somemore.community.repository.CommunityBoardRepository;
+import com.somemore.community.usecase.command.CreateCommunityBoardUseCase;
+import com.somemore.community.usecase.query.CommunityBoardQueryUseCase;
+import com.somemore.global.exception.BadRequestException;
+import com.somemore.global.exception.ExceptionMessage;
+import org.assertj.core.api.ThrowableAssert;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.util.UUID;
+
+class DeleteCommunityBoardServiceTest extends IntegrationTestSupport {
+    @Autowired
+    private DeleteCommunityBoardService deleteCommunityBoardService;
+    @Autowired
+    private CreateCommunityBoardUseCase createCommunityBoardUseCase;
+    @Autowired
+    private CommunityBoardQueryUseCase communityBoardQueryUseCase;
+    @Autowired
+    private CommunityBoardRepository communityBoardRepository;
+
+    private UUID writerId;
+    private Long communityId;
+    private String imgUrl;
+
+    @BeforeEach
+    void setUp() {
+        CommunityBoardCreateRequestDto dto = CommunityBoardCreateRequestDto.builder()
+                .title("커뮤니티 테스트 제목")
+                .content("커뮤니티 테스트 내용")
+                .build();
+
+        writerId = UUID.randomUUID();
+        imgUrl = "https://image.test.url/123";
+
+        communityId = createCommunityBoardUseCase.createCommunityBoard(dto, writerId, imgUrl);
+    }
+
+    @AfterEach
+    void tearDown() {
+        communityBoardRepository.deleteAllInBatch();
+    }
+
+    @DisplayName("커뮤니티 게시글 id로 게시글을 삭제한다.")
+    @Test
+    void deleteCommunityBoardWithId() {
+        //given
+        //when
+        deleteCommunityBoardService.deleteCommunityBoard(writerId, communityId);
+
+        //then
+        assertThat(communityBoardQueryUseCase.getCommunityBoards()).isEmpty();
+    }
+
+    @DisplayName("삭제된 커뮤니티 게시글의 id로 게시글을 삭제할 때 예외를 던진다.")
+    @Test
+    void deleteCommunityBoardWithDeletedId() {
+        //given
+        deleteCommunityBoardService.deleteCommunityBoard(writerId, communityId);
+
+        //when
+        ThrowableAssert.ThrowingCallable callable = () -> deleteCommunityBoardService.deleteCommunityBoard(writerId, communityId);
+
+        //then
+        assertThatExceptionOfType(BadRequestException.class)
+                .isThrownBy(callable)
+                .withMessage(ExceptionMessage.NOT_EXISTS_COMMUNITY_BOARD.getMessage());
+    }
+
+    @DisplayName("작성자가 아닌 id로 커뮤니티 게시글을 삭제하고자 할 때 예외를 던진다.")
+    @Test
+    void deleteCommunityBoardWithNotWriterId() {
+        //given
+        //when
+        ThrowableAssert.ThrowingCallable callable = () -> deleteCommunityBoardService.deleteCommunityBoard(UUID.randomUUID(), communityId);
+
+        //then
+        assertThatExceptionOfType(BadRequestException.class)
+                .isThrownBy(callable)
+                .withMessage(ExceptionMessage.UNAUTHORIZED_COMMUNITY_BOARD.getMessage());
+    }
+}

src/test/java/com/somemore/community/service/query/CommunityBoardQueryServiceTest.java

@@ -10,6 +10,7 @@
 import com.somemore.community.dto.response.CommunityBoardGetResponseDto;
 import com.somemore.community.repository.CommunityBoardRepository;
 import com.somemore.community.usecase.command.CreateCommunityBoardUseCase;
+import com.somemore.community.usecase.command.DeleteCommunityBoardUseCase;
 import com.somemore.global.exception.BadRequestException;
 import com.somemore.global.exception.ExceptionMessage;
 import com.somemore.volunteer.domain.Volunteer;
@@ -37,6 +38,8 @@ class CommunityBoardQueryServiceTest extends IntegrationTestSupport {
     @Autowired
     CreateCommunityBoardUseCase createCommunityBoardUseCase;
     @Autowired
+    DeleteCommunityBoardUseCase deleteCommunityBoardUseCase;
+    @Autowired
     CommunityBoardQueryService communityBoardQueryService;
 
     @AfterEach
@@ -209,7 +212,7 @@ void getCommunityBoardDetailWithDeletedId() {
 
         Long communityId = createCommunityBoardUseCase.createCommunityBoard(dto1, savedVolunteer.getId(), imgUrl);
 
-        communityBoardRepository.deleteAllInBatch();
+        deleteCommunityBoardUseCase.deleteCommunityBoard(savedVolunteer.getId(), communityId);
 
         //when
         ThrowableAssert.ThrowingCallable callable = () -> communityBoardQueryService.getCommunityBoardDetail(communityId);