package com.srv4pos.server.api.sync.sample;
   
   import com.srv4pos.server.api.order.OrderInfo;
   import com.srv4pos.server.api.sync.EntitySyncAdapter;
   import com.srv4pos.server.api.sync.Uploader;
   
   import java.util.List;
   
   public class OrderSyncAdapter implements EntitySyncAdapter<OrderInfo> {
  
      private final MemoryLocalStorage storage;
  
      public OrderSyncAdapter(MemoryLocalStorage storage) {
          this.storage = storage;
      }
  
      public void upload(Uploader<OrderInfo> uploader) {
          List<SyncOrder> orders = storage.getOrders();
          for (SyncOrder order : orders) {
              if (!order.isSynced()) {
                  doUpload(uploader, order);
              }
          }
      }
  
      public void createOrUpdateEntityFromInfo(OrderInfo info) {
          SyncOrder order = storage.getOrderByIdentifier(info.getIdentifier());
  
          if (order == null) {
              order = new SyncOrder(info);
              storage.add(order); // adding even if info is in "deleted" state (info.isDeleted() == true)
          } else {
              order.setInfo(info);
          }
  
          order.setSynced(true);
      }
  
      private void doUpload(Uploader<OrderInfo> uploader, SyncOrder order) {
          final OrderInfo orderInfo = order.getInfo();
  
          // syncing entity only if it was already synced at least once (has identifier) OR is not deleted
          //if (orderInfo.getIdentifier() != null || !orderInfo.isDeleted()) {
  
          final String newIdentifier = uploader.upload(orderInfo, null);
          if (newIdentifier != null && newIdentifier.length() > 0) {
              orderInfo.setIdentifier(newIdentifier);
          }
          //}
          order.setSynced(true);
      }
  }