refactor: LLM 지출분석 결과 페이징 적용

Author: lSNOTNULL

src/main/java/store/lastdance/controller/expense/ExpenseController.java

@@ -12,7 +12,6 @@
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
-import org.springframework.security.core.parameters.P;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 import store.lastdance.aspect.RateLimit;
@@ -257,12 +256,18 @@ public ResponseEntity<ApiResponse<String>> saveAnalysisResult(
     }
 
     @GetMapping("/analyze/history")
-    @Operation(summary = "LLM 지출 분석 내역 조회", description = "사용자의 전체 지출 분석 내역을 최신순으로 조회")
-    public ResponseEntity<ApiResponse<List<ExpenseAnalysisHistoryDTO>>> getAnalysisHistoryList(
-            @Parameter(hidden = true) @AuthenticationPrincipal CustomOAuth2User oAuth2User
+    @Operation(summary = "LLM 지출 분석 내역 조회", description = "사용자의 전체 지출 분석 내역을 최신순으로 조회 (페이징 포함)")
+    public ResponseEntity<ApiResponse<PageWithSummaryResponse<ExpenseAnalysisHistoryDTO>>> getAnalysisHistoryList(
+            @Parameter(hidden = true) @AuthenticationPrincipal CustomOAuth2User oAuth2User,
+            @RequestParam(defaultValue = "0") int page,
+            @RequestParam(defaultValue = "10") int size,
+            @RequestParam(defaultValue = "createdAt") String sortBy,
+            @RequestParam(defaultValue = "DESC") String sortDirection
     ){
         UUID userId = oAuth2User.getUserId();
-        List<ExpenseAnalysisHistoryDTO> response = expenseService.getExpenseAnalysisHistory(userId);
+        Sort sort = Sort.by(Sort.Direction.fromString(sortDirection), sortBy);
+        Pageable pageable = PageRequest.of(page, size, sort);
+        PageWithSummaryResponse<ExpenseAnalysisHistoryDTO> response = expenseService.getExpenseAnalysisHistory(userId,pageable);
 
         return ResponseEntity.ok(ApiResponse.success(response));
     }

src/main/java/store/lastdance/repository/expense/ExpenseAnalysisHistoryRepository.java

@@ -1,5 +1,7 @@
 package store.lastdance.repository.expense;
 
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import store.lastdance.domain.expense.ExpenseAnalysisHistory;
 import store.lastdance.domain.user.User;
@@ -11,4 +13,6 @@ public interface ExpenseAnalysisHistoryRepository extends JpaRepository<ExpenseA
 
     // 특정 사용자의 모든 분석 내역을 최신순으로 조회
     List<ExpenseAnalysisHistory> findByUserOrderByCreatedAtDesc(User user);
+
+    Page<ExpenseAnalysisHistory> findByUser(User user, Pageable pageable);
 }

src/main/java/store/lastdance/service/expense/ExpenseService.java

@@ -56,7 +56,7 @@ PageWithSummaryResponse<CombinedExpenseResponseDTO> getCombinedExpenses(
     // LLM 지출 분석 응답
     AnalyzeExpenseResponseDTO analyzeExpenses(UUID userId, AnalyzeExpenseRequestDTO requestDTO);
     // LLM 지출 분석 내역 조회
-    List<ExpenseAnalysisHistoryDTO> getExpenseAnalysisHistory(UUID userId);
+    PageWithSummaryResponse<ExpenseAnalysisHistoryDTO> getExpenseAnalysisHistory(UUID userId, Pageable pageable);
     // LLM 지출 분석 내역 저장
     void saveExpenseAnalysisHistory(UUID userId, AnalyzeExpenseRequestDTO requestDTO,AnalyzeExpenseResponseDTO analysisResponseDTO);
 }

src/main/java/store/lastdance/service/expense/ExpenseServiceImpl.java

@@ -1106,14 +1106,15 @@ public AnalyzeExpenseResponseDTO analyzeExpenses(UUID userId, AnalyzeExpenseRequ
      * LLM 지출 분석 기록 조회
      */
     @Override
-    public List<ExpenseAnalysisHistoryDTO> getExpenseAnalysisHistory(UUID userId) {
+    public PageWithSummaryResponse<ExpenseAnalysisHistoryDTO> getExpenseAnalysisHistory(UUID userId, Pageable pageable) {
 
         User user = userRepository.findById(userId).orElseThrow(() -> new CustomException(ErrorCode.USER_NOT_FOUND));
-        List<ExpenseAnalysisHistory> historyList = expenseAnalysisHistoryRepository.findByUserOrderByCreatedAtDesc(user);
 
-        return historyList.stream()
-                .map(ExpenseAnalysisHistoryDTO::from)
-                .collect(Collectors.toList());
+        Page<ExpenseAnalysisHistory> historyPage = expenseAnalysisHistoryRepository.findByUser(user,pageable);
+
+        Page<ExpenseAnalysisHistoryDTO> historyDTOPage = historyPage.map(ExpenseAnalysisHistoryDTO::from);
+
+        return PageWithSummaryResponse.of(historyDTOPage, ExpenseSummary.empty());
 
     }