✨ Feature/#171 - 6.6 게시글 좋아요 API 구현

http/suggestion/SuggestionControllerHttpRequest.http

@@ -46,4 +46,9 @@ Authorization: Bearer {{access_token}}
 
 {
     "content": "{{suggestion.API_6_5.content}}"
-}
+}
+
+### 6.6 게시글 좋아요
+// @no-log
+PUT {{host_url}}/api/v1/boards/{{suggestion.API_6_6.id}}/likes
+Authorization: Bearer {{access_token}}

src/main/java/com/daon/onjung/suggestion/application/controller/command/SuggestionCommandV1Controller.java

@@ -6,6 +6,7 @@
 import com.daon.onjung.suggestion.application.dto.request.CreateCommentRequestDto;
 import com.daon.onjung.suggestion.application.usecase.CreateBoardUseCase;
 import com.daon.onjung.suggestion.application.usecase.CreateCommentUseCase;
+import com.daon.onjung.suggestion.application.usecase.CreateOrDeleteLikeUseCase;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.MediaType;
@@ -20,6 +21,7 @@ public class SuggestionCommandV1Controller {
 
     private final CreateBoardUseCase createBoardUseCase;
     private final CreateCommentUseCase createCommentUseCase;
+    private final CreateOrDeleteLikeUseCase createOrDeleteLikeUseCase;
 
     @PostMapping(value = "/api/v1/boards", consumes = {MediaType.MULTIPART_FORM_DATA_VALUE, MediaType.APPLICATION_JSON_VALUE})
     public ResponseDto<Void> createBoard(
@@ -41,4 +43,15 @@ public ResponseDto<Void> createComment(
         return ResponseDto.created(null);
     }
 
+    @PutMapping("/api/v1/boards/{id}/likes")
+    public ResponseDto<Void> likeBoard(
+            @AccountID UUID accountId,
+            @PathVariable Long id
+    ) {
+        if (createOrDeleteLikeUseCase.execute(accountId, id)) {
+            return ResponseDto.created(null);
+        } else {
+            return ResponseDto.ok(null);
+        }
+    }
 }

src/main/java/com/daon/onjung/suggestion/application/service/CreateOrDeleteLikeService.java

@@ -0,0 +1,53 @@
+package com.daon.onjung.suggestion.application.service;
+
+import com.daon.onjung.account.domain.User;
+import com.daon.onjung.account.repository.mysql.UserRepository;
+import com.daon.onjung.core.exception.error.ErrorCode;
+import com.daon.onjung.core.exception.type.CommonException;
+import com.daon.onjung.suggestion.application.usecase.CreateOrDeleteLikeUseCase;
+import com.daon.onjung.suggestion.domain.Board;
+import com.daon.onjung.suggestion.domain.Like;
+import com.daon.onjung.suggestion.domain.service.LikeService;
+import com.daon.onjung.suggestion.repository.mysql.BoardRepository;
+import com.daon.onjung.suggestion.repository.mysql.LikeRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.UUID;
+
+@Service
+@RequiredArgsConstructor
+public class CreateOrDeleteLikeService implements CreateOrDeleteLikeUseCase {
+
+    private final BoardRepository boardRepository;
+    private final UserRepository userRepository;
+    private final LikeRepository likeRepository;
+    private final LikeService likeService;
+
+    @Override
+    @Transactional
+    public Boolean execute(UUID accountId, Long boardId) {
+
+        // 유저 조회
+        User user = userRepository.findById(accountId)
+                .orElseThrow(() -> new CommonException(ErrorCode.NOT_FOUND_RESOURCE));
+
+        // 게시글 조회
+        Board board = boardRepository.findById(boardId)
+                .orElseThrow(() -> new CommonException(ErrorCode.NOT_FOUND_RESOURCE));
+
+        // 좋아요 여부 확인
+        Like like = likeRepository.findByBoardAndUser(board, user)
+                .orElse(null);
+
+        // 좋아요 생성 또는 삭제
+        if (like != null) {
+            likeRepository.delete(like);
+            return false;
+        } else {
+            likeRepository.save(likeService.createLike(user,board));
+            return true;
+        }
+    }
+}

src/main/java/com/daon/onjung/suggestion/application/usecase/CreateOrDeleteLikeUseCase.java

@@ -0,0 +1,11 @@
+package com.daon.onjung.suggestion.application.usecase;
+
+import com.daon.onjung.core.annotation.bean.UseCase;
+
+import java.util.UUID;
+
+@UseCase
+public interface CreateOrDeleteLikeUseCase {
+
+    Boolean execute(UUID accountId, Long boardId);
+}

src/main/java/com/daon/onjung/suggestion/domain/service/LikeService.java

@@ -1,7 +1,20 @@
 package com.daon.onjung.suggestion.domain.service;
 
+import com.daon.onjung.account.domain.User;
+import com.daon.onjung.suggestion.domain.Board;
+import com.daon.onjung.suggestion.domain.Like;
 import org.springframework.stereotype.Service;
 
 @Service
 public class LikeService {
+
+    public Like createLike(
+            User user,
+            Board board
+    ) {
+        return Like.builder()
+                .user(user)
+                .board(board)
+                .build();
+    }
 }

src/main/java/com/daon/onjung/suggestion/repository/mysql/LikeRepository.java

@@ -6,10 +6,14 @@
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.Optional;
+
 @Repository
 public interface LikeRepository extends JpaRepository<Like, Long> {
 
     Integer countByBoard(Board board);
 
     Boolean existsByBoardAndUser(Board board, User user);
+
+    Optional<Like> findByBoardAndUser(Board board, User user);
 }