/* ====================================================================
   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You 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.apache.poi.hwpf.model;

import org.apache.poi.hwpf.sprm.SectionSprmCompressor;
import org.apache.poi.hwpf.sprm.SectionSprmUncompressor;
import org.apache.poi.hwpf.sprm.SprmBuffer;
import org.apache.poi.hwpf.usermodel.SectionProperties;
import org.apache.poi.util.Internal;

@Internal
public final class SEPX extends PropertyNode<SEPX> {

    SectionProperties sectionProperties;

    SectionDescriptor _sed;

    public SEPX( SEPX other ) {
        super(other);

        sectionProperties = (other.sectionProperties == null) ? null : other.sectionProperties.copy();
        _sed = (other._sed == null) ? null : other._sed.copy();
    }


    public SEPX( SectionDescriptor sed, int start, int end, byte[] grpprl )
    {
        super( start, end, new SprmBuffer( grpprl, 0 ) );
        _sed = sed;
    }

    public byte[] getGrpprl()
    {
        if ( sectionProperties != null )
        {
            byte[] grpprl = SectionSprmCompressor
                    .compressSectionProperty( sectionProperties );
            _buf = new SprmBuffer( grpprl, 0 );
        }

        return ( (SprmBuffer) _buf ).toByteArray();
    }

    public SectionDescriptor getSectionDescriptor()
    {
        return _sed;
    }

    public SectionProperties getSectionProperties()
    {
        if ( sectionProperties == null )
        {
            sectionProperties = SectionSprmUncompressor.uncompressSEP(
                    ( (SprmBuffer) _buf ).toByteArray(), 0 );
        }
        return sectionProperties;
    }

    @Override
    public boolean equals( Object o )
    {
        if (!(o instanceof SEPX)) return false;
        SEPX sepx = (SEPX) o;
        if ( super.equals( o ) )
        {
            return sepx._sed.equals( _sed );
        }
        return false;
    }

    @Override
    public int hashCode() {
        assert false : "hashCode not designed";
        return 42; // any arbitrary constant will do
    }

    public String toString()
    {
        return "SEPX from " + getStart() + " to " + getEnd();
    }

    @Override
    public SEPX copy() {
        return new SEPX(this);
    }
}