[FIX] 전체 사진첩 개수 응답을 위한 PageResponse 수정

src/main/java/cc/backend/photoAlbum/controller/PhotoAlbumController.java

@@ -1,6 +1,7 @@
 package cc.backend.photoAlbum.controller;
 
 import cc.backend.apiPayLoad.ApiResponse;
+import cc.backend.apiPayLoad.PageResponse;
 import cc.backend.apiPayLoad.SliceResponse;
 import cc.backend.member.entity.Member;
 import cc.backend.photoAlbum.dto.PerformerShowListResponseDTO;
@@ -60,11 +61,11 @@ public ApiResponse<PhotoAlbumResponseDTO.PhotoAlbumResultWithPresignedUrlDTO> up
 
     @GetMapping("/member/{memberId}")
     @Operation(summary = "등록자 계정의 전체 사진첩 피드 조회 API", description = "등록자의 사진첩 피드를 전체 조회하는 API 입니다.")
-    public ApiResponse<SliceResponse<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO>> getPhotoAlbumList(
+    public ApiResponse<PageResponse<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO>> getPhotoAlbumList(
             @AuthenticationPrincipal(expression = "member") Member member,
             @PathVariable("memberId") Long performerId,
             @ParameterObject Pageable pageable) {
-        return ApiResponse.onSuccess(SliceResponse.of(photoAlbumService.getPhotoAlbumList(member.getId(), performerId, pageable)));
+        return ApiResponse.onSuccess((photoAlbumService.getPhotoAlbumList(member.getId(), performerId, pageable)));
     }
 
     @PreAuthorize("hasRole('PERFORMER')")

src/main/java/cc/backend/photoAlbum/repository/PhotoAlbumRepository.java

@@ -29,7 +29,7 @@ OR CAST(p.amateurShow.id AS string) LIKE %:keyword%
     JOIN a.member m
     WHERE m.id = :performerId
 """)
-    Slice<PhotoAlbum> findByPerformerId(
+    Page<PhotoAlbum> findByPerformerId(
             @Param("performerId") Long performerId,
             Pageable pageable
     );

src/main/java/cc/backend/photoAlbum/service/PhotoAlbumService.java

@@ -1,5 +1,6 @@
 package cc.backend.photoAlbum.service;
 
+import cc.backend.apiPayLoad.PageResponse;
 import cc.backend.photoAlbum.dto.PerformerShowListResponseDTO;
 import cc.backend.photoAlbum.dto.PhotoAlbumRequestDTO;
 import cc.backend.photoAlbum.dto.PhotoAlbumResponseDTO;
@@ -15,7 +16,7 @@ public interface PhotoAlbumService {
 
     public PhotoAlbumResponseDTO.PhotoAlbumResultWithPresignedUrlDTO createPhotoAlbum(PhotoAlbumRequestDTO.CreatePhotoAlbumDTO requestDTO, Long memberId);
     public PhotoAlbumResponseDTO.PhotoAlbumResultWithPresignedUrlDTO getPhotoAlbum(Long photoAlbumId, Long memberId);
-    public Slice<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO> getPhotoAlbumList(Long memberId, Long performerId, Pageable pageable);
+    public PageResponse<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO> getPhotoAlbumList(Long memberId, Long performerId, Pageable pageable);
     public PhotoAlbumResponseDTO.PhotoAlbumResultDTO updatePhotoAlbum(Long photoAlbumId, PhotoAlbumRequestDTO.CreatePhotoAlbumDTO requestDTO, Long memberId);
     public String deletePhotoAlbum(Long photoAlbumId, Long memberId);
     public PhotoAlbumResponseDTO.ScrollMemberPhotoAlbumDTO getAllRecentPhotoAlbumList(Long cursorId, LocalDateTime updatedAt, int size);

src/main/java/cc/backend/photoAlbum/service/PhotoAlbumServiceImpl.java

@@ -2,9 +2,9 @@
 
 import cc.backend.amateurShow.entity.AmateurShow;
 import cc.backend.amateurShow.repository.AmateurShowRepository;
+import cc.backend.apiPayLoad.PageResponse;
 import cc.backend.apiPayLoad.code.status.ErrorStatus;
 import cc.backend.apiPayLoad.exception.GeneralException;
-import cc.backend.config.s3.S3Service;
 import cc.backend.image.DTO.ImageRequestDTO;
 import cc.backend.image.DTO.ImageResponseDTO;
 import cc.backend.image.FilePath;
@@ -28,7 +28,6 @@
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.*;
-import java.util.function.Function;
 import java.util.stream.Collectors;
 
 import static cc.backend.amateurShow.converter.AmateurConverter.mergeSchedule;
@@ -118,7 +117,7 @@ public PhotoAlbumResponseDTO.PhotoAlbumResultWithPresignedUrlDTO getPhotoAlbum(L
     }
 
     @Override
-    public Slice<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO> getPhotoAlbumList(Long memberId, Long performerId, Pageable pageable){
+    public PageResponse<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO> getPhotoAlbumList(Long memberId, Long performerId, Pageable pageable){
         //로그인 검사
         memberRepository.findById(memberId)
                 .orElseThrow(() -> new GeneralException(ErrorStatus.MEMBER_NOT_AUTHORIZED));
@@ -132,20 +131,19 @@ public Slice<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO> getPhotoAlbumList(Long m
         );
 
         // 사진첩 단위 조회
-        Slice<PhotoAlbum> albumSlice = photoAlbumRepository.findByPerformerId(performerId, sortedPageable);
-        List<PhotoAlbum> albums = albumSlice.getContent();
+        Page<PhotoAlbum> albumPage = photoAlbumRepository.findByPerformerId(performerId, sortedPageable);
 
         // 사진첩 id 추출
-        List<Long> albumIds = albums.stream()
+        List<Long> albumIds = albumPage.stream()
                 .map(PhotoAlbum::getId)
                 .toList();
 
         // 대표 이미지 DTO 가져오기 (presigned URL 포함)
         Map<Long, ImageResponseDTO.ImageResultWithPresignedUrlDTO> imageDtoMap =
                 getFirstImageDTOForPhotoAlbums(albumIds);
 
-        // DTO 변환
-        List<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO> content = albums.stream()
+        // DTO 변환 - stream으로 하면 메타데이터 다 날라가서 Page.map()으로 바로 변환
+        Page<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO> content = albumPage
                 .map(album -> PhotoAlbumResponseDTO.SinglePhotoAlbumDTO.builder()
                         .amateurShowId(album.getAmateurShow().getId())
                         .photoAlbumId(album.getId())
@@ -154,10 +152,9 @@ public Slice<PhotoAlbumResponseDTO.SinglePhotoAlbumDTO> getPhotoAlbumList(Long m
                         .detailAddress(album.getAmateurShow().getDetailAddress())
                         .imageResultWithPresignedUrlDTO(imageDtoMap.get(album.getId()))
                         .build()
-                )
-                .toList();
+                );
 
-        return new SliceImpl<>(content, sortedPageable, albumSlice.hasNext());
+        return PageResponse.of(content);
     }
 
     @Override