[REFACTOR]: TableLayout 엔티티 컬럼 및 테이블 배치도 재생성 시 미래 예약 검증 로직 추가

src/main/java/com/eatsfine/eatsfine/domain/booking/repository/BookingRepository.java

@@ -102,4 +102,16 @@ Optional<LocalDate> findLastConflictingDate(
             @Param("breakEnd") LocalTime breakEnd,
             @Param("adjustedBreakStart") LocalTime adjustedBreakStart
     );
+
+    @Query("SELECT DISTINCT bt.storeTable.id FROM BookingTable bt " +
+            "JOIN bt.booking b " +
+            "WHERE bt.storeTable.id IN :tableIds " +
+            "AND (b.bookingDate > :currentDate " +
+            "     OR (b.bookingDate = :currentDate AND b.bookingTime >= :currentTime)) " +
+            "AND b.status IN ('CONFIRMED', 'PENDING')")
+    List<Long> findTableIdsWithFutureBookings(
+            @Param("tableIds") List<Long> tableIds,
+            @Param("currentDate") LocalDate currentDate,
+            @Param("currentTime") LocalTime currentTime
+    );
 }

src/main/java/com/eatsfine/eatsfine/domain/table_layout/controller/TableLayoutControllerDocs.java

@@ -18,6 +18,7 @@ public interface TableLayoutControllerDocs {
 
                     - 그리드 크기는 1x1 ~ 10x10 범위 내에서 설정 가능합니다.
                     - 가게당 활성 배치도는 1개만 존재하며, 새 배치도 생성 시 기존 배치도는 자동으로 비활성화됩니다.
+                    - 기존 배치도에 존재하는 테이블에 예약이 있다면, 배치도 생성 시 LAYOUT400_2 에러메세지를 반환합니다.
                     - 생성된 배치도는 빈 상태로 생성되며, 이후 테이블 추가 API를 통해 테이블을 배치할 수 있습니다.
                     """
     )

src/main/java/com/eatsfine/eatsfine/domain/table_layout/entity/TableLayout.java

@@ -19,7 +19,10 @@
 @Builder
 @SQLDelete(sql = "UPDATE table_layout SET is_deleted = true, is_active = false, deleted_at = CURRENT_TIMESTAMP WHERE id = ?")
 @SQLRestriction("is_deleted = false")
-@Table(name = "table_layout")
+@Table(
+        name = "table_layout",
+        uniqueConstraints = {@UniqueConstraint(name = "uk_table_layout_store_active", columnNames = {"store_active_key"})}
+)
 public class TableLayout extends BaseEntity {
 
     @Id
@@ -39,6 +42,16 @@ public class TableLayout extends BaseEntity {
     @Column(name = "is_active", nullable = false)
     private boolean isActive;
 
+    // 가상 컬럼 추가 (JPA에서는 직접 사용하지 않지만 DB 레벨에서 동작)
+    // is_active = true일 때만 store_id 값을 가지고, false일 때는 NULL
+    @Column(
+            name = "store_active_key",
+            columnDefinition = "VARCHAR(50) GENERATED ALWAYS AS (CASE WHEN is_active = true THEN CONCAT('store_', store_id) ELSE NULL END) STORED",
+            insertable = false,
+            updatable = false
+    )
+    private String storeActiveKey;
+
     @Column(name = "is_deleted", nullable = false)
     @Builder.Default
     private boolean isDeleted = false;

src/main/java/com/eatsfine/eatsfine/domain/table_layout/exception/status/TableLayoutErrorStatus.java

@@ -13,6 +13,8 @@ public enum TableLayoutErrorStatus implements BaseErrorCode {
     _LAYOUT_NOT_FOUND(HttpStatus.NOT_FOUND, "LAYOUT404", "배치도를 찾을 수 없습니다."),
 
     _LAYOUT_FORBIDDEN(HttpStatus.FORBIDDEN, "LAYOUT403", "해당 가게의 소유자만 접근 가능합니다."),
+
+    _CANNOT_DELETE_LAYOUT_WITH_FUTURE_BOOKINGS(HttpStatus.BAD_REQUEST, "LAYOUT400_2", "미래 예약이 있는 배치도는 삭제할 수 없습니다. 모든 예약이 완료된 후 재생성해주세요.")
     ;
 
     private final HttpStatus httpStatus;

src/main/java/com/eatsfine/eatsfine/domain/table_layout/service/TableLayoutCommandServiceImpl.java

@@ -1,25 +1,31 @@
 package com.eatsfine.eatsfine.domain.table_layout.service;
 
+import com.eatsfine.eatsfine.domain.booking.repository.BookingRepository;
 import com.eatsfine.eatsfine.domain.store.entity.Store;
-import com.eatsfine.eatsfine.domain.store.exception.StoreException;
-import com.eatsfine.eatsfine.domain.store.repository.StoreRepository;
-import com.eatsfine.eatsfine.domain.store.status.StoreErrorStatus;
 import com.eatsfine.eatsfine.domain.store.validator.StoreValidator;
+import com.eatsfine.eatsfine.domain.storetable.entity.StoreTable;
 import com.eatsfine.eatsfine.domain.table_layout.converter.TableLayoutConverter;
 import com.eatsfine.eatsfine.domain.table_layout.dto.req.TableLayoutReqDto;
 import com.eatsfine.eatsfine.domain.table_layout.dto.res.TableLayoutResDto;
 import com.eatsfine.eatsfine.domain.table_layout.entity.TableLayout;
+import com.eatsfine.eatsfine.domain.table_layout.exception.TableLayoutException;
+import com.eatsfine.eatsfine.domain.table_layout.exception.status.TableLayoutErrorStatus;
 import com.eatsfine.eatsfine.domain.table_layout.repository.TableLayoutRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.time.LocalDate;
+import java.time.LocalTime;
+import java.util.List;
+import java.util.Optional;
+
 @Service
 @RequiredArgsConstructor
 @Transactional
 public class TableLayoutCommandServiceImpl implements TableLayoutCommandService {
-    private final StoreRepository storeRepository;
     private final TableLayoutRepository tableLayoutRepository;
+    private final BookingRepository bookingRepository;
     private final StoreValidator storeValidator;
 
     // 테이블 배치도 생성
@@ -32,7 +38,19 @@ public TableLayoutResDto.LayoutDetailDto createLayout(
 
         Store store = storeValidator.validateStoreOwner(storeId, email);
 
-        deactivateExistingLayout(store);
+        Optional<TableLayout> existingLayout = tableLayoutRepository.findByStoreIdAndIsActiveTrue(storeId);
+
+        if (existingLayout.isPresent()) {
+            // 미래 예약 확인
+            boolean hasFutureBookings = checkFutureBookingsInLayout(existingLayout.get());
+
+            if (hasFutureBookings) {
+                throw new TableLayoutException(TableLayoutErrorStatus._CANNOT_DELETE_LAYOUT_WITH_FUTURE_BOOKINGS);
+            }
+
+            // 미래 예약이 없으면 배치도 비활성화 후 재생성
+            tableLayoutRepository.delete(existingLayout.get());
+        }
 
         // 새 배치도 생성
         TableLayout newLayout = TableLayout.builder()
@@ -48,9 +66,20 @@ public TableLayoutResDto.LayoutDetailDto createLayout(
         return TableLayoutConverter.toLayoutDetailDto(savedLayout);
     }
 
-    // 기존 테이블 배치도 비활성화
-    private void deactivateExistingLayout(Store store) {
-        tableLayoutRepository.findByStoreIdAndIsActiveTrue(store.getId())
-                .ifPresent(tableLayoutRepository::delete);
+    // 미래 예약 확인
+    private boolean checkFutureBookingsInLayout(TableLayout layout) {
+        LocalDate currentDate = LocalDate.now();
+        LocalTime currentTime = LocalTime.now();
+        List<Long> tableIds = layout.getTables().stream()
+                .map(StoreTable::getId)
+                .toList();
+
+        if (tableIds.isEmpty()) {
+            return false;
+        }
+
+        List<Long> tableIdsWithFutureBookings = bookingRepository.findTableIdsWithFutureBookings(tableIds, currentDate, currentTime);
+
+        return !tableIdsWithFutureBookings.isEmpty();
     }
 }