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/*
 * jabsorb - a Java to JavaScript Advanced Object Request Broker
 * http://www.jabsorb.org
 *
 * Copyright 2007-2009 The jabsorb team
 *
 * based on original code from
 * JSON-RPC-Java - a JSON-RPC to Java Bridge with dynamic invocation
 *
 * Copyright Metaparadigm Pte. Ltd. 2004.
 * Michael Clark 
 *
 * 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.
 *
 */

package org.jabsorb.serializer.impl;

import org.jabsorb.serializer.AbstractSerializer;
import org.jabsorb.serializer.MarshallException;
import org.jabsorb.serializer.ObjectMatch;
import org.jabsorb.serializer.SerializerState;
import org.jabsorb.serializer.UnmarshallException;

/**
 * Serialiess Boolean values
 */
public class BooleanSerializer extends AbstractSerializer
{
  /**
   * Unique serialisation id.
   */
  private final static long serialVersionUID = 2;

  /**
   * Classes that this can serialise.
   */
  private static Class[] _serializableClasses = new Class[] { boolean.class,
      Boolean.class };

  /**
   * Classes that this can serialise to.
   */
  private static Class[] _JSONClasses = new Class[] { Boolean.class,
      String.class };

  public Class[] getJSONClasses()
  {
    return _JSONClasses;
  }

  public Class[] getSerializableClasses()
  {
    return _serializableClasses;
  }

  public Object marshall(SerializerState state, Object p, Object o)
      throws MarshallException
  {
    return o;
  }

  public ObjectMatch tryUnmarshall(SerializerState state, Class clazz,
      Object jso) throws UnmarshallException
  {
    final ObjectMatch toReturn;
    if (jso instanceof String)
    {
      // TODO: Boolean parses stuff as ignoreCase(x)=="true" as true or
      // anything else as false. I'm pretty sure in this case it this should
      // only be javascript true or false strings, because otherwise
      // this will catch string passed to it.
      if (jso.equals("true") || jso.equals("false"))
      {
        toReturn = ObjectMatch.OKAY;
      }
      else
      {
        toReturn = ObjectMatch.ROUGHLY_SIMILAR;
      }
    }
    else if (jso instanceof Boolean)
    {
      toReturn = ObjectMatch.OKAY;
    }
    else
    {
      toReturn = ObjectMatch.ROUGHLY_SIMILAR;
    }
    state.setSerialized(jso, toReturn);
    return toReturn;
  }

  public Object unmarshall(SerializerState state, Class clazz, Object jso)
      throws UnmarshallException
  {
    Boolean returnValue = Boolean.FALSE;

    if (jso instanceof String)
    {
      try
      {
        returnValue = new Boolean((String) jso);
      }
      catch (Exception e)
      {
        throw new UnmarshallException("Cannot convert " + jso + " to Boolean", e);
      }
    }
    else if (jso instanceof Boolean || clazz == boolean.class)
    {
      returnValue = (Boolean) jso;
    }

    state.setSerialized(jso, returnValue);
    return returnValue;
  }
}