Merge pull request #13 from TeamUStory/feat/like-count

feat: 좋아요 카운트 코드 구현
TeamUStory · Jul 14, 2024 · 9f2fa09 · 9f2fa09
2 parents 230510d + 7b95980
commit 9f2fa09
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Showing 6 changed files with 54 additions and 1 deletion.
diff --git a/src/main/java/com/elice/ustory/domain/like/LikeController.java b/src/main/java/com/elice/ustory/domain/like/LikeController.java
@@ -1,5 +1,6 @@
 package com.elice.ustory.domain.like;
 
+import com.elice.ustory.domain.like.dto.LikeCountResponse;
 import com.elice.ustory.domain.like.dto.LikeListResponse;
 import com.elice.ustory.domain.like.dto.LikeResponse;
 import com.elice.ustory.domain.paper.entity.Paper;
@@ -9,6 +10,7 @@
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.ArraySchema;
 import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.ExampleObject;
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
@@ -97,6 +99,22 @@ public ResponseEntity<LikeResponse> isPaperLiked(@PathVariable Long paperId,
         return ResponseEntity.ok(new LikeResponse(isLiked));
     }
 
+    @Operation(summary = "Like Count API",
+            description = "해당 페이퍼에서 좋아요의 총 개수를 반환한다. <br>" +
+                    "countLike로 개수를 알 수 있다.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "Ok", content = @Content(mediaType = "application/json", schema = @Schema(implementation = LikeCountResponse.class))),
+            @ApiResponse(responseCode = "400", description = "Bad Request", content = @Content(mediaType = "application/json", schema = @Schema(implementation = ErrorResponse.class))),
+            @ApiResponse(responseCode = "500", description = "Internal Server Error", content = @Content(mediaType = "application/json", schema = @Schema(implementation = ErrorResponse.class)))
+    })
+    @GetMapping("/{paperId}/count")
+    public ResponseEntity<LikeCountResponse> countLiked(@PathVariable Long paperId) {
+
+        int count = likeService.countLikedById(paperId);
+
+        return ResponseEntity.ok(new LikeCountResponse(count));
+    }
+
     @Operation(summary = "Delete Like API", description = "좋아요를 해제한다.")
     @ApiResponses({
             @ApiResponse(responseCode = "204", description = "No Content", content = @Content(mediaType = "application/json")),

diff --git a/src/main/java/com/elice/ustory/domain/like/LikeService.java b/src/main/java/com/elice/ustory/domain/like/LikeService.java
@@ -7,6 +7,7 @@
 import com.elice.ustory.domain.user.entity.Users;
 import com.elice.ustory.domain.user.repository.UserRepository;
 import com.elice.ustory.global.exception.model.ConflictException;
+import com.elice.ustory.global.exception.model.InternalServerException;
 import com.elice.ustory.global.exception.model.NotFoundException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.PageRequest;
@@ -64,4 +65,14 @@ public void deleteLike(Long userId, Long paperId) {
 
         likeRepository.delete(like);
     }
+
+    /** 좋아요 총 개수 반환 메서드 **/
+    public int countLikedById(Long paperId) {
+
+        // 먼저 해당 페이퍼가 있는지 없는지 체크한 뒤, 페이퍼가 없다면 에러 반환
+        Paper paper = paperRepository.findById(paperId)
+                .orElseThrow(() -> new NotFoundException(String.format(NOT_FOUND_PAPER_MESSAGE, paperId)));
+
+        return likeRepository.countLikeById(paperId);
+    }
 }
diff --git a/src/main/java/com/elice/ustory/domain/like/dto/LikeCountResponse.java b/src/main/java/com/elice/ustory/domain/like/dto/LikeCountResponse.java
@@ -0,0 +1,14 @@
+package com.elice.ustory.domain.like.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public class LikeCountResponse {
+
+    @Schema(description = "서비스 내에서 해당 페이퍼에 좋아요 총 개수",  example = "정수 타입으로, 0 부터 시작")
+    private int countLike;
+
+}
diff --git a/src/main/java/com/elice/ustory/domain/like/repository/LikeQueryDslRepository.java b/src/main/java/com/elice/ustory/domain/like/repository/LikeQueryDslRepository.java
@@ -14,4 +14,6 @@ public interface LikeQueryDslRepository {
 
     /** userId에 해당하는 Bookmark 들의 Paper List 가져오기 */
     List<Paper> findLikesByUserId(Long userId, Pageable pageable);
+
+    Integer countLikeById(Long paperId);
 }
diff --git a/src/main/java/com/elice/ustory/domain/like/repository/LikeRepositoryImpl.java b/src/main/java/com/elice/ustory/domain/like/repository/LikeRepositoryImpl.java
@@ -38,4 +38,12 @@ public List<Paper> findLikesByUserId(Long userId, Pageable pageable) {
                 .limit(pageable.getPageSize())
                 .fetch();
     }
+
+    @Override
+    public Integer countLikeById(Long paperId) {
+        return queryFactory.select(like.count().intValue())
+                .from(like)
+                .where(like.paper.id.eq(paperId))
+                .fetchOne();
+    }
 }
diff --git a/src/main/java/com/elice/ustory/domain/paper/PaperController.java b/src/main/java/com/elice/ustory/domain/paper/PaperController.java
@@ -196,7 +196,7 @@ public ResponseEntity<List<PaperMapListResponse>> getPapersByUserForMap(@JwtAuth
         return ResponseEntity.ok(response);
     }
 
-    @Operation(summary = "Count Write Paper By Specific User API", description = "특정 유저가 작성한 모든 페이퍼의 갯수를 불러온다.")
+    @Operation(summary = "Count Write Paper By Specific User API", description = "특정 유저가 작성한 모든 페이퍼의 개수를 불러온다.")
     @ApiResponses({
             @ApiResponse(responseCode = "200", description = "Ok", content = @Content(mediaType = "application/json", schema = @Schema(implementation = PaperCountResponse.class))),
             @ApiResponse(responseCode = "400", description = "Bad Request", content = @Content(mediaType = "application/json", schema = @Schema(implementation = ErrorResponse.class))),