/*
 * TeleStax, Open Source Cloud Communications
 * Copyright 2012, Telestax 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.cap.service.circuitSwitchedCall.primitive;

import javolution.xml.XMLFormat;
import javolution.xml.stream.XMLStreamException;

import org.mobicents.protocols.ss7.cap.api.service.circuitSwitchedCall.primitive.VariablePartTime;
import org.mobicents.protocols.ss7.cap.primitives.OctetStringBase;

/**
 *
 * @author sergey vetyutnev
 *
 */
public class VariablePartTimeImpl extends OctetStringBase implements VariablePartTime {

    private static final String HOUR = "hour";
    private static final String MINUTE = "minute";

    public VariablePartTimeImpl() {
        super(2, 2, "VariablePartDate");
    }

    public VariablePartTimeImpl(byte[] data) {
        super(2, 2, "VariablePartDate");

        this.data = data;
    }

    public VariablePartTimeImpl(int hour, int minute) {
        super(2, 2, "VariablePartDate");

        setParameters(hour, minute);
    }

    protected void setParameters(int hour, int minute) {
        this.data = new byte[2];

        this.data[0] = (byte) this.encodeByte(hour);
        this.data[1] = (byte) this.encodeByte(minute);
    }

    protected void setHour(int val) {
        if (this.data == null || this.data.length != 2)
            return;

        this.data[0] = (byte) this.encodeByte(val);
    }

    protected void setMinute(int val) {
        if (this.data == null || this.data.length != 2)
            return;

        this.data[1] = (byte) this.encodeByte(val);
    }

    @Override
    public byte[] getData() {
        return this.data;
    }

    @Override
    public int getHour() {
        if (this.data == null || this.data.length != 2)
            return 0;

        return this.decodeByte(data[0]);
    }

    @Override
    public int getMinute() {
        if (this.data == null || this.data.length != 2)
            return 0;

        return this.decodeByte(data[1]);
    }

    private int decodeByte(int bt) {
        return (bt & 0x0F) * 10 + ((bt & 0xF0) >> 4);
    }

    private int encodeByte(int val) {
        return (val / 10) | (val % 10) << 4;
    }

    @Override
    public String toString() {

        StringBuilder sb = new StringBuilder();
        sb.append(_PrimitiveName);
        sb.append(" [");

        if (this.data != null && this.data.length == 2) {
            sb.append("hour=");
            sb.append(this.getHour());
            sb.append(", minute=");
            sb.append(this.getMinute());
        }

        sb.append("]");

        return sb.toString();
    }

    /**
     * XML Serialization/Deserialization
     */
    protected static final XMLFormat<VariablePartTimeImpl> VARIABLE_PART_TIME_XML = new XMLFormat<VariablePartTimeImpl>(
            VariablePartTimeImpl.class) {

        @Override
        public void read(javolution.xml.XMLFormat.InputElement xml, VariablePartTimeImpl variablePartTime)
                throws XMLStreamException {
            variablePartTime.data = new byte[2];

            variablePartTime.setHour(xml.getAttribute(HOUR, 0));
            variablePartTime.setMinute(xml.getAttribute(MINUTE, 0));
        }

        @Override
        public void write(VariablePartTimeImpl variablePartTime, javolution.xml.XMLFormat.OutputElement xml)
                throws XMLStreamException {
            xml.setAttribute(HOUR, variablePartTime.getHour());
            xml.setAttribute(MINUTE, variablePartTime.getMinute());
        }
    };
}