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/***********************************************************************************************************************
 *
 * blueBill Mobile - open source birdwatching
 * ==========================================
 *
 * Copyright (C) 2009, 2010 by Tidalwave s.a.s. (http://www.tidalwave.it)
 * http://bluebill.tidalwave.it/mobile/
 *
 ***********************************************************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 *
 ***********************************************************************************************************************
 *
 * $Id: TaxonObservable.java,v 64899513037c 2010/05/29 11:09:38 fabrizio $
 *
 **********************************************************************************************************************/
package it.tidalwave.bluebill.mobile.taxonomy;

import javax.annotation.Nonnull;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.List;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.Serializable;
import org.openide.util.Lookup;
import it.tidalwave.util.Id;
import it.tidalwave.util.NotFoundException;
import it.tidalwave.bluebill.observation.Finder;
import it.tidalwave.bluebill.observation.Observable;
import it.tidalwave.bluebill.observation.Observation;
import it.tidalwave.bluebill.observation.ObservationItem;
import it.tidalwave.bluebill.observation.simple.AsSupport;
import it.tidalwave.bluebill.taxonomy.Taxon;
import static it.tidalwave.bluebill.taxonomy.Taxon.Taxon;
import it.tidalwave.bluebill.taxonomy.Taxonomy;

/***********************************************************************************************************************
 *
 * Makes sure that only the id of a Taxon is serialized, and not the whole class with the whole Taxonomy.
 * 
 * @author  Fabrizio Giudici
 * @version $Id: $
 *
 **********************************************************************************************************************/
public class TaxonObservable extends AsSupport implements Observable, Externalizable
  {
    public static final Class TaxonObservable = TaxonObservable.class;
    private static final long serialVersionUID = 4534653437593487L;

    // FIXME: drop this when you have a real Lookup that you can mock
    public static Taxonomy testTaxonomy;

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    public TaxonObservable() // for deserialization
      {
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    public TaxonObservable (final @Nonnull Taxon taxon,
                            final @Nonnull Object ... capabilities)
      {
        super(taxon);
        this.capabilities.addAll(Arrays.asList(capabilities));
        this.lookup = null; // force recreation - this won't fire events, though
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @Nonnull
    public Finder findObservationItems()
      {
        throw new UnsupportedOperationException("Not supported yet.");
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @Nonnull
    public Finder findObservations()
      {
        throw new UnsupportedOperationException("Not supported yet.");
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    public void writeExternal (final @Nonnull ObjectOutput oo)
      throws IOException
      {
        oo.writeObject(as(Taxon).getId());
        oo.writeObject(getSerializables(capabilities));
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    public void readExternal (final @Nonnull ObjectInput oi)
      throws IOException, ClassNotFoundException
      {
        final Id id = (Id)oi.readObject();
        try
          {
            Taxonomy taxonomy = null;

            if (testTaxonomy != null)
              {
                taxonomy = testTaxonomy;
              }
            else
              {
                final Lookup lookup = Lookup.getDefault();
                taxonomy = lookup.lookup(TaxonomyPreferences.class).getTaxonomy();
              }
            
            final Taxon taxon = taxonomy.findTaxonById(id);
            capabilities.add(taxon);
            capabilities.addAll((List)oi.readObject());
          }
        catch (NotFoundException e)
          {
            throw new IOException(e.toString());
          }
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @Override
    public boolean equals (Object o)
      {
        if ((o == null) || !(o instanceof TaxonObservable))
          {
            return false;
          }

        return as(Taxon).equals(((TaxonObservable)o).as(Taxon));
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @Override
    public int hashCode()
      {
        return as(Taxon).hashCode();
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    private static List getSerializables (final List