/*

 * JBoss, Home of Professional Open Source

 * Copyright 2011, Red Hat, Inc. and individual contributors

 * by the @authors tag. See the copyright.txt in the distribution for a

 * full listing of individual contributors.

 *

 * This is free software; you can redistribute it and/or modify it

 * under the terms of the GNU Lesser General Public License as

 * published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 *

 * This software 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this software; if not, write to the Free

 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.

 */



package org.mobicents.protocols.ss7.map.primitives;



import java.io.IOException;

import java.util.Arrays;



import org.mobicents.protocols.asn.AsnException;

import org.mobicents.protocols.asn.AsnInputStream;

import org.mobicents.protocols.asn.AsnOutputStream;

import org.mobicents.protocols.asn.Tag;

import org.mobicents.protocols.ss7.map.api.MAPException;

import org.mobicents.protocols.ss7.map.api.MAPParsingComponentException;

import org.mobicents.protocols.ss7.map.api.MAPParsingComponentExceptionReason;

import org.mobicents.protocols.ss7.map.api.primitives.LMSI;



/**

 * 

 * @author sergey vetyutnev

 * 

 */

public class LMSIImpl implements LMSI, MAPAsnPrimitive {

	

	private byte[] data;



	

	public LMSIImpl() {

	}

	

	public LMSIImpl(byte[] data) {

		this.data = data;

	}





	public int getTag() {

		return Tag.STRING_OCTET;

	}



	@Override

	public int getTagClass() {

		return Tag.CLASS_UNIVERSAL;

	}



	@Override

	public boolean getIsPrimitive() {

		return true;

	}



	@Override

	public byte[] getData() {

		return this.data;

	}

	



	@Override

	public void decodeAll(AsnInputStream ansIS) throws MAPParsingComponentException {



		try {

			int length = ansIS.readLength();

			this._decode(ansIS, length);

		} catch (IOException e) {

			throw new MAPParsingComponentException("IOException when decoding LMSI: " + e.getMessage(), e,

					MAPParsingComponentExceptionReason.MistypedParameter);

		}

	}



	@Override

	public void decodeData(AsnInputStream ansIS, int length) throws MAPParsingComponentException {



		try {

			this._decode(ansIS, length);

		} catch (IOException e) {

			throw new MAPParsingComponentException("IOException when decoding LMSI: " + e.getMessage(), e,

					MAPParsingComponentExceptionReason.MistypedParameter);

		}

	}



	private void _decode(AsnInputStream ansIS, int length) throws MAPParsingComponentException, IOException {

		

		if (length != 4)

			throw new MAPParsingComponentException("Error decoding LMSI: the LMSI field must contain 4 octets. Contains: " + length,

					MAPParsingComponentExceptionReason.MistypedParameter);



		try {

			this.data = new byte[4];

			ansIS.read(this.data);

		} catch (IOException e) {

			throw new MAPParsingComponentException("IOException when decoding LMSI: " + e.getMessage(), e,

					MAPParsingComponentExceptionReason.MistypedParameter);

		}

	}

	

	@Override

	public void encodeAll(AsnOutputStream asnOs) throws MAPException {

		

		this.encodeAll(asnOs, Tag.CLASS_UNIVERSAL, Tag.STRING_OCTET);

	}



	@Override

	public void encodeAll(AsnOutputStream asnOs, int tagClass, int tag) throws MAPException {

		

		try {

			asnOs.writeTag(tagClass, true, tag);

			int pos = asnOs.StartContentDefiniteLength();

			this.encodeData(asnOs);

			asnOs.FinalizeContent(pos);

		} catch (AsnException e) {

			throw new MAPException("AsnException when encoding LMSI: " + e.getMessage(), e);

		}

	}



	@Override

	public void encodeData(AsnOutputStream asnOs) throws MAPException {



		if (this.data == null)

			throw new MAPException("Error while encoding the LMSI: data is not defined");



		if (this.data.length != 4)

			throw new MAPException("Error while encoding the LMSI: data field length must equale 4");



		asnOs.write(this.data);

	}



	@Override

	public String toString() {

		return "LMSI [Data= " + this.printDataArr() + "]";

	}

	

	@Override

	public int hashCode() {

		final int prime = 31;

		int result = 1;

		result = prime * result + Arrays.hashCode(data);

		return result;

	}



	@Override

	public boolean equals(Object obj) {

		if (this == obj)

			return true;

		if (obj == null)

			return false;

		if (getClass() != obj.getClass())

			return false;

		LMSIImpl other = (LMSIImpl) obj;

		if (!Arrays.equals(data, other.data))

			return false;

		return true;

	}



	private String printDataArr() {

		StringBuilder sb = new StringBuilder();

		if( this.data!=null ) {

			for( int b : this.data ) {

				sb.append(b);

				sb.append(" ");

			}

		}

		

		return sb.toString();

	}

}