Merge pull request #136 from shared-solutions/feat#127

#127 Feat : 저장한 게시물(내 카테고리) 상세보기 API 구현

src/main/java/friend/spring/converter/MyPageConverter.java

@@ -114,4 +114,26 @@ public static MyPageResponseDTO.MyInquiryRes toMyInquiryRes(Inquiry inquiry){
                 .inquiry_id(inquiry.getId())
                 .build();
     }
+
+    public static MyPageResponseDTO.SavedPostCategoryDetailRes toSavedPostCategoryDetailRes(Post post){
+        long diffTime = post.getCreatedAt().until(LocalDateTime.now(), ChronoUnit.SECONDS); // now보다 이후면 +, 전이면 -
+        diffTime = diffTime / SECOND;
+        diffTime = diffTime / MINUTE;
+        diffTime = diffTime / HOUR;
+        return MyPageResponseDTO.SavedPostCategoryDetailRes.builder()
+                .ago(diffTime)
+                .title(post.getTitle())
+                .content(post.getContent())
+                .postLike(post.getPostLikeList().size())
+                .comment(post.getCommentList().size())
+                .build();
+    }
+
+    public static MyPageResponseDTO.SavedPostCategoryDetailListRes toSavedPostCategoryDetailListRes(Page<Post> postList, Category category){
+        List<MyPageResponseDTO.SavedPostCategoryDetailRes> postCategoryDetailResList = postList.stream().map(MyPageConverter::toSavedPostCategoryDetailRes).collect(Collectors.toList());
+        return MyPageResponseDTO.SavedPostCategoryDetailListRes.builder()
+                .name(category.getName())
+                .postList(postCategoryDetailResList)
+                .build();
+    }
 }

src/main/java/friend/spring/repository/PostRepository.java

@@ -4,6 +4,7 @@
 import friend.spring.domain.Post;
 import friend.spring.domain.enums.PostState;
 import friend.spring.domain.enums.PostType;
+import io.lettuce.core.dynamic.annotation.Param;
 import org.springframework.data.domain.Page;
 import friend.spring.domain.User;
 import org.springframework.data.domain.Page;
@@ -23,4 +24,7 @@ public interface PostRepository extends JpaRepository<Post, Long> {
     @Query(value = "SELECT * FROM post WHERE post.created_at >= DATE_ADD(now(), INTERVAL -7 DAY) ORDER BY post.point DESC", nativeQuery = true)
     Page<Post> findBestPosts(Pageable pageable);
     Page<Post> findAllByOrderByCreatedAtDesc(Pageable pageable);
+
+    @Query(value = "SELECT p FROM Post p JOIN p.postScrapList s JOIN p.category c WHERE s.user.id = :userId and c.id = :categoryId")
+    Page<Post> findCategoryDetail(Long userId, Long categoryId, PageRequest pageRequest);
 }

src/main/java/friend/spring/service/MyPageService.java

@@ -33,4 +33,7 @@ public interface MyPageService {
     User editUserSecurity(Long userId, MyPageRequestDTO.ProfileEditSecurityReq profileEditSecurityReq);
 
     Inquiry createInquiry(Long userId, MyPageRequestDTO.MyInquiryReq myInquiryReq);
+    Page<Post> getCategoryDetailList(Long userId, Long categoryId, Integer page);
+
+    Category getCategory(Long categoryId);
 }

src/main/java/friend/spring/service/MyPageServiceImpl.java

@@ -169,5 +169,19 @@ public Inquiry createInquiry(Long userId, MyPageRequestDTO.MyInquiryReq myInquir
         return inquiryRepository.save(inquiry);
     }
 
+    @Override
+    public Page<Post> getCategoryDetailList(Long userId, Long categoryId, Integer page) {
+        User user = userRepository.findById(userId).orElseThrow(() -> new GeneralException(ErrorStatus.USER_NOT_FOUND));
+        Category category = categoryRepository.findById(categoryId).orElseThrow(() -> new GeneralException(ErrorStatus.POST_CATGORY_NOT_FOUND));
+        Page<Post> detailList = postRepository.findCategoryDetail(userId, categoryId, PageRequest.of(page, 10));
+        return detailList;
+    }
+
+    @Override
+    public Category getCategory(Long categoryId) {
+        Category category = categoryRepository.findById(categoryId).orElseThrow(() -> new GeneralException(ErrorStatus.POST_CATGORY_NOT_FOUND));
+        return category;
+    }
+
 
 }

src/main/java/friend/spring/web/controller/MyPageRestController.java

@@ -235,4 +235,28 @@ public ApiResponse<MyPageResponseDTO.MyInquiryRes> editUserSecurity(
         Inquiry inquiry = myPageService.createInquiry(userId, myInquiryReq);
         return ApiResponse.onSuccess(MyPageConverter.toMyInquiryRes(inquiry));
     }
+
+    @GetMapping(value = "/post/{category-id}")
+    @Operation(summary = "사용자 글 카테고리 상세보기 조회 API", description = "카테고리별로 상세화면을 조회하는 API입니다. ex) /user/my-page/post/{category-id}")
+    @ApiResponses({
+            @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "COMMON200", description = "OK, 요청에 성공했습니다. "),
+            @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "USER4001",description = "NOT_FOUND, 사용자를 찾을 수 없습니다."),
+            @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "POST4004",description = "NOT_FOUND, 글에 대한 스크랩 데이터를 찾을 수 없습니다."),
+
+    })
+    @Parameters({
+            @Parameter(name = "atk", description = "RequestHeader - 로그인한 사용자의 accessToken"),
+            @Parameter(name = "page", description = "query string(RequestParam) - 몇번째 페이지인지 가리키는 page 변수 (0부터 시작)"),
+            @Parameter(name = "category-id", description = "path variable - 카테고리 아이디"),
+    })
+    public ApiResponse<MyPageResponseDTO.SavedPostCategoryDetailListRes> GetUserCategoryDetail(
+            @RequestHeader(name = "atk") String atk,
+            @PathVariable("category-id") Long categoryId,
+            @RequestParam(name = "page", defaultValue = "0") Integer page,
+            HttpServletRequest request){
+        Long userId = jwtTokenService.JwtToId(request);
+        Page<Post> categoryDetailList = myPageService.getCategoryDetailList(userId, categoryId, page);
+        Category category = myPageService.getCategory(categoryId);
+        return ApiResponse.onSuccess(MyPageConverter.toSavedPostCategoryDetailListRes(categoryDetailList, category));
+    }
 }

src/main/java/friend/spring/web/dto/MyPageResponseDTO.java

@@ -99,4 +99,23 @@ public static class ProfileEditPasswordRes{
     public static class MyInquiryRes{
         Long inquiry_id;
     }
+    @Builder
+    @Getter
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class SavedPostCategoryDetailRes{
+        Long ago;
+        String title;
+        String content;
+        Integer postLike;
+        Integer comment;
+    }
+    @Builder
+    @Getter
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class SavedPostCategoryDetailListRes{
+        String name;
+        List<SavedPostCategoryDetailRes> postList;
+    }
 }