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/**
 * Copyright (C) cedarsoft GmbH.
 *
 * Licensed under the GNU General Public License version 3 (the "License")
 * with Classpath Exception; you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *         http://www.cedarsoft.org/gpl3ce
 *         (GPL 3 with Classpath Exception)
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 3 only, as
 * published by the Free Software Foundation. cedarsoft GmbH designates this
 * particular file as subject to the "Classpath" exception as provided
 * by cedarsoft GmbH in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 3 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 3 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
 * or visit www.cedarsoft.com if you need additional information or
 * have any questions.
 */

package com.cedarsoft.serialization.serializers.json;

import com.cedarsoft.version.Version;
import com.cedarsoft.version.VersionException;
import com.cedarsoft.version.VersionRange;
import com.cedarsoft.crypt.Algorithm;
import com.cedarsoft.crypt.Hash;
import com.cedarsoft.serialization.jackson.AbstractJacksonSerializer;
import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.JsonProcessingException;

import javax.annotation.Nonnull;
import java.io.IOException;

public class HashSerializer extends AbstractJacksonSerializer {


  public static final String PROPERTY_ALGORITHM = "algorithm";

  public static final String PROPERTY_VALUE = "hex";

  public HashSerializer() {
    super( "hash", VersionRange.from( 1, 0, 0 ).to( 1, 0, 0 ) );
  }

  @Override
  public void serialize( @Nonnull JsonGenerator serializeTo, @Nonnull Hash object, @Nonnull Version formatVersion ) throws IOException, JsonProcessingException {
    verifyVersionReadable( formatVersion );

    serializeTo.writeStringField( PROPERTY_ALGORITHM, object.getAlgorithm().name() );
    serializeTo.writeStringField( PROPERTY_VALUE, object.getValueAsHex() );
  }

  @Nonnull
  @Override
  public Hash deserialize( @Nonnull JsonParser deserializeFrom, @Nonnull Version formatVersion ) throws VersionException, IOException, JsonProcessingException {
    nextFieldValue( deserializeFrom, PROPERTY_ALGORITHM );
    Algorithm algorithm = Algorithm.getAlgorithm( deserializeFrom.getText() );

    nextFieldValue( deserializeFrom, PROPERTY_VALUE );
    String hex = deserializeFrom.getText();

    closeObject( deserializeFrom );

    return Hash.fromHex( algorithm, hex );
  }
}