package com.srv4pos.server.api.sync.sample;
   
   import com.srv4pos.server.api.sync.EntitySyncAdapter;
   import com.srv4pos.server.api.sync.Uploader;
   import com.srv4pos.server.api.tax.TaxInfo;
   
   import java.util.List;
   
   public class TaxSyncAdapter implements EntitySyncAdapter<TaxInfo> {
  
      private final MemoryLocalStorage storage;
  
      public TaxSyncAdapter(MemoryLocalStorage storage) {
          this.storage = storage;
      }
  
      public void upload(Uploader<TaxInfo> uploader) {
          List<SyncTax> taxes = storage.getTaxes();
          for (SyncTax tax : taxes) {
              if (!tax.isSynced()) {
                  doUpload(uploader, tax);
              }
          }
      }
  
      private void doUpload(Uploader<TaxInfo> uploader, SyncTax tax) {
          final TaxInfo taxInfo = tax.getInfo();
  
          // syncing entity only if it was already synced at least once (has identifier) OR is not deleted
  //        if (taxInfo.getIdentifier() != null || !taxInfo.isDeleted()) {
  
          final String newIdentifier = uploader.upload(taxInfo, null);
          if (newIdentifier != null && newIdentifier.length() > 0) {
              taxInfo.setIdentifier(newIdentifier);
          }
  //        }
          tax.setSynced(true);
      }
  
      public void createOrUpdateEntityFromInfo(TaxInfo info) {
          SyncTax tax = storage.getTaxByIdentifier(info.getIdentifier());
  
          if (tax == null) {
              if (!info.isDeleted()) {
                  // gracefully merging taxes with the same vat amount when it is possible, see https://redmine.produktpoolen.se/issues/1688
                  tax = storage.getTaxByVat(info.getVat());
              }
  
              if (tax != null) {
                  tax.setInfo(info);
              } else {
                  tax = new SyncTax(info);
                  storage.add(tax); // adding tax even if it was deleted on server (info.isDeleted() == true)
              }
          } else {
              tax.setInfo(info);
          }
  
          tax.setSynced(true);
      }
  }