Feat: 책과 관련된 게시글 수 반환 api 구현 (#64)

* #63 - feat: 책관 관련되 게시글 수 가져오는 기능 구현 * #63 - test: 테스트 기능 구현
BookitList · Feb 4, 2024 · 3ad90d5 · 3ad90d5
1 parent 8a5b1ad
commit 3ad90d5
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diff --git a/src/main/java/cotato/bookitlist/post/controller/PostController.java b/src/main/java/cotato/bookitlist/post/controller/PostController.java
@@ -4,6 +4,7 @@
 import cotato.bookitlist.config.security.jwt.AuthDetails;
 import cotato.bookitlist.post.dto.requeset.PostRegisterRequest;
 import cotato.bookitlist.post.dto.requeset.PostUpdateRequest;
+import cotato.bookitlist.post.dto.response.PostCountResponse;
 import cotato.bookitlist.post.dto.response.PostListResponse;
 import cotato.bookitlist.post.dto.response.PostResponse;
 import cotato.bookitlist.post.service.PostService;
@@ -74,4 +75,11 @@ public ResponseEntity<PostListResponse> searchPost(
     ) {
         return ResponseEntity.ok(postService.searchPost(isbn13, pageable));
     }
+
+    @GetMapping("/count")
+    public ResponseEntity<PostCountResponse> getPostCount(
+            @IsValidIsbn @RequestParam String isbn13
+    ) {
+        return ResponseEntity.ok(postService.getPostCount(isbn13));
+    }
 }
diff --git a/src/main/java/cotato/bookitlist/post/dto/response/PostCountResponse.java b/src/main/java/cotato/bookitlist/post/dto/response/PostCountResponse.java
@@ -0,0 +1,10 @@
+package cotato.bookitlist.post.dto.response;
+
+public record PostCountResponse(
+        int count
+) {
+
+    public static PostCountResponse of(int count) {
+        return new PostCountResponse(count);
+    }
+}
diff --git a/src/main/java/cotato/bookitlist/post/repository/PostRepository.java b/src/main/java/cotato/bookitlist/post/repository/PostRepository.java
@@ -7,4 +7,6 @@
 
 public interface PostRepository extends JpaRepository<Post, Long> {
     Page<Post> findByBook_Isbn13(String isbn13, Pageable pageable);
+
+    int countByBook_Isbn13(String isbn13);
 }
diff --git a/src/main/java/cotato/bookitlist/post/service/PostService.java b/src/main/java/cotato/bookitlist/post/service/PostService.java
@@ -6,6 +6,7 @@
 import cotato.bookitlist.member.repository.MemberRepository;
 import cotato.bookitlist.post.domain.Post;
 import cotato.bookitlist.post.dto.PostDto;
+import cotato.bookitlist.post.dto.response.PostCountResponse;
 import cotato.bookitlist.post.dto.response.PostListResponse;
 import cotato.bookitlist.post.dto.requeset.PostRegisterRequest;
 import cotato.bookitlist.post.dto.requeset.PostUpdateRequest;
@@ -60,4 +61,9 @@ public PostListResponse getAllPost(Pageable pageable) {
     public PostListResponse searchPost(String isbn13, Pageable pageable) {
         return PostListResponse.from(postRepository.findByBook_Isbn13(isbn13, pageable));
     }
+
+    @Transactional(readOnly = true)
+    public PostCountResponse getPostCount(String isbn13) {
+        return PostCountResponse.of(postRepository.countByBook_Isbn13(isbn13));
+    }
 }
diff --git a/src/test/java/cotato/bookitlist/post/controller/PostControllerTest.java b/src/test/java/cotato/bookitlist/post/controller/PostControllerTest.java
@@ -205,5 +205,20 @@ void givenNothing_whenSearchingPost_thenReturnPostListResponse() throws Exceptio
                 .andExpect(jsonPath("$.totalResults").value(6))
         ;
     }
+
+    @Test
+    @DisplayName("isbn13을 이용해 게시글 count를 조회한다.")
+    void givenIsbn13_whenCountingPost_thenReturnPostCountResponse() throws Exception {
+        //given
+        String isbn13 = "9788931514810";
+
+        //when & then
+        mockMvc.perform(get("/posts/count")
+                        .param("isbn13", isbn13)
+                        .contentType(MediaType.APPLICATION_JSON))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.count").value(4))
+        ;
+    }
 }