feat: auto assign overseas pallet locations

warehouse-overseas-service/src/main/java/com/baiyue/warehouse/mapper/WarehouseResourceLockMapper.java

@@ -46,7 +46,7 @@ public interface WarehouseResourceLockMapper extends BaseMapper<WarehouseResourc
         UPDATE wh_location
         SET status = 'OCCUPIED', updated_at = CURRENT_TIMESTAMP(3), version = version + 1
         WHERE id = #{locationId} AND customer_id = #{customerId} AND warehouse_id = #{warehouseId}
-          AND status = 'IDLE' AND deleted = 0
+          AND status IN ('ACTIVE','IDLE') AND deleted = 0
         """)
     int occupyLocation(@Param("customerId") long customerId, @Param("warehouseId") long warehouseId,
                        @Param("locationId") long locationId);

warehouse-overseas-service/src/main/java/com/baiyue/warehouse/repository/WarehouseResourceRepository.java

@@ -11,6 +11,7 @@ import com.baiyue.warehouse.mapper.WarehouseLocationMapper;
 import com.baiyue.warehouse.mapper.WarehousePalletMapper;
 import com.baiyue.warehouse.mapper.WarehousePalletBindingMapper;
 import com.baiyue.warehouse.entity.WarehousePalletBindingEntity;
+import com.baiyue.warehouse.service.WarehouseResourceService;
 import org.springframework.stereotype.Repository;
 import org.springframework.util.StringUtils;
 import jakarta.annotation.Resource;
@@ -47,6 +48,17 @@ public class WarehouseResourceRepository {
             .last("LIMIT 1"));
     }
 
+    /** Phase-one rule: choose the first enabled normal location by code. */
+    public WarehouseLocationEntity findFirstAutoAssignableLocation(long warehouseId) {
+        return locations.selectOne(new LambdaQueryWrapper<WarehouseLocationEntity>()
+            .eq(WarehouseLocationEntity::getCustomerId, WarehouseResourceService.PUBLIC_RESOURCE_SCOPE)
+            .eq(WarehouseLocationEntity::getWarehouseId, warehouseId)
+            .notIn(WarehouseLocationEntity::getLocationType, "VIRTUAL", "SHARED_OVERFLOW")
+            .in(WarehouseLocationEntity::getStatus, "ACTIVE", "IDLE")
+            .orderByAsc(WarehouseLocationEntity::getLocationCode)
+            .last("LIMIT 1"));
+    }
+
     public WarehouseLocationEntity findSharedOverflowLocation(long warehouseId) {
         return locations.selectOne(new LambdaQueryWrapper<WarehouseLocationEntity>()
             .eq(WarehouseLocationEntity::getCustomerId, 0L)

warehouse-overseas-service/src/main/java/com/baiyue/warehouse/service/WarehousePalletBatchService.java

@@ -91,9 +91,11 @@ public class WarehousePalletBatchService {
                 WarehousePalletEntity createdPallet = resources.reusablePublicPallet(
                     normalized.warehouseId(), requested.palletCode());
                 if (createdPallet == null) {
+                    var autoLocation = repository.findFirstAutoAssignableLocation(normalized.warehouseId());
+                    Long locationId = autoLocation == null ? null : autoLocation.getId();
                     Long palletId = resources.createPallet(WarehouseResourceService.PUBLIC_RESOURCE_SCOPE,
                         normalized.warehouseId(), new PalletRequests.SaveRequest(requested.palletCode(), "WOOD",
-                            AUTO_PALLET_CAPACITY_CBM, AUTO_PALLET_UNIT_PRICE_USD, "IDLE", null, AUTO_PALLET_REMARK,
+                            AUTO_PALLET_CAPACITY_CBM, AUTO_PALLET_UNIT_PRICE_USD, "IDLE", locationId, AUTO_PALLET_REMARK,
                             requested.fbaWarehouseCode()));
                     createdPallet = resources.pallet(WarehouseResourceService.PUBLIC_RESOURCE_SCOPE,
                         normalized.warehouseId(), palletId);

warehouse-overseas-service/src/main/java/com/baiyue/warehouse/service/WarehouseResourceLockService.java

@@ -16,6 +16,7 @@ import jakarta.annotation.Resource;
 
 import java.time.LocalDateTime;
 import java.util.Objects;
+import java.util.Set;
 
 @Service
 public class WarehouseResourceLockService {
@@ -35,7 +36,11 @@ public class WarehouseResourceLockService {
             throw new BizException(ResultCode.NOT_FOUND, "Pallet or location does not belong to the tenant warehouse");
         }
         boolean nonExclusiveLocation = isNonExclusive(location);
-        boolean locationAvailable = nonExclusiveLocation ? "ACTIVE".equals(location.getStatus()) : "IDLE".equals(location.getStatus());
+        // ACTIVE is the UI-facing enabled/unused state; IDLE is retained for
+        // locations created by the older lifecycle.
+        boolean locationAvailable = nonExclusiveLocation
+            ? "ACTIVE".equals(location.getStatus())
+            : Set.of("ACTIVE", "IDLE").contains(location.getStatus());
         if (!"IDLE".equals(pallet.getStatus()) || !locationAvailable) {
             WarehouseResourceLockEntity concurrent =
                 repository.findByReservationKey(request.customerId(), request.reservationKey());