Feat: 푸바오 받은 사랑 (#61)

redis에 있는 값 가져오고 없으면 rds에서 가져온 후 redis에 저장

#60

src/main/java/com/fubao/project/domain/api/post/PostController.java

@@ -113,4 +113,9 @@ public ResponseEntity<DataResponse<CustomResponseCode>> postFubaoLove() {
         postService.addFubaoLove();
         return ResponseEntity.ok(DataResponse.of(CustomResponseCode.FUBAO_LOVE_ADD));
     }
+    @Operation(summary = "푸바오받은 사랑")
+    @GetMapping(value = "/fubao/love")
+    public ResponseEntity<DataResponse<PostGetFubaoLoveResponse>> getFubaoLove() {
+        return ResponseEntity.ok(DataResponse.of(postService.getFubaoLove()));
+    }
 }

src/main/java/com/fubao/project/domain/api/post/dto/response/PostGetFubaoLoveResponse.java

@@ -0,0 +1,16 @@
+package com.fubao.project.domain.api.post.dto.response;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+public class PostGetFubaoLoveResponse {
+    @Schema(description = "푸바오가 받은 사랑", example = "123456788")
+    private Long love;
+}

src/main/java/com/fubao/project/domain/service/PostService.java

@@ -25,4 +25,6 @@ public interface PostService {
     void deletePost(Long postId, UUID memberId);
 
     void addFubaoLove();
+
+    PostGetFubaoLoveResponse getFubaoLove();
 }

src/main/java/com/fubao/project/domain/service/PostServiceImp.java

@@ -151,6 +151,17 @@ public void addFubaoLove() {
         addFubaoLove(1L);
     }
 
+    @Override
+    @Transactional
+    public PostGetFubaoLoveResponse getFubaoLove() {
+        FubaoLove fubaoLove = fubaoLoveRepository.getReferenceById(1L);
+        if (!redisUtil.hasKey(FUBAO_LOVE)) {
+            redisUtil.setStringData(FUBAO_LOVE, String.valueOf(fubaoLove.getLove()), Duration.ofHours(6));
+            return new PostGetFubaoLoveResponse(fubaoLove.getLove());
+        }
+        return new PostGetFubaoLoveResponse(Long.valueOf(redisUtil.getData(FUBAO_LOVE)));
+    }
+
     private Post findPostById(Long postId) {
         return postRepository.findById(postId).orElseThrow(() -> new CustomException(ResponseCode.POST_NOT_FOUND));
     }