/* ====================================================================
     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.sprm;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.apache.poi.hwpf.usermodel.SectionProperties;
import org.apache.poi.util.Internal;
import org.apache.poi.util.LittleEndian;

@Internal
public final class SectionSprmCompressor
{
    private final static SectionProperties DEFAULT_SEP = new SectionProperties();
    public SectionSprmCompressor()
    {
    }
    public static byte[] compressSectionProperty(SectionProperties newSEP)
    {
        int size = 0;
        List<byte[]> sprmList = new ArrayList<byte[]>();

        if (newSEP.getCnsPgn() != DEFAULT_SEP.getCnsPgn())
        {
            size += SprmUtils.addSprm((short)0x3000, newSEP.getCnsPgn(), null, sprmList);
        }
        if (newSEP.getIHeadingPgn() != DEFAULT_SEP.getIHeadingPgn())
        {
            size += SprmUtils.addSprm((short)0x3001, newSEP.getIHeadingPgn(), null, sprmList);
        }
        if (!Arrays.equals(newSEP.getOlstAnm(), DEFAULT_SEP.getOlstAnm()))
        {
            size += SprmUtils.addSprm((short)0xD202, 0, newSEP.getOlstAnm(), sprmList);
        }
        if (newSEP.getFEvenlySpaced() != DEFAULT_SEP.getFEvenlySpaced())
        {
            size += SprmUtils.addSprm((short)0x3005, newSEP.getFEvenlySpaced() ? 1 : 0, null, sprmList);
        }
        if (newSEP.getFUnlocked() != DEFAULT_SEP.getFUnlocked())
        {
            size += SprmUtils.addSprm((short)0x3006, newSEP.getFUnlocked() ? 1 :0, null, sprmList);
        }
        if (newSEP.getDmBinFirst() != DEFAULT_SEP.getDmBinFirst())
        {
            size += SprmUtils.addSprm((short)0x5007, newSEP.getDmBinFirst(), null, sprmList);
        }
        if (newSEP.getDmBinOther() != DEFAULT_SEP.getDmBinOther())
        {
            size += SprmUtils.addSprm((short)0x5008, newSEP.getDmBinOther(), null, sprmList);
        }
        if (newSEP.getBkc() != DEFAULT_SEP.getBkc())
        {
            size += SprmUtils.addSprm((short)0x3009, newSEP.getBkc(), null, sprmList);
        }
        if (newSEP.getFTitlePage() != DEFAULT_SEP.getFTitlePage())
        {
            size += SprmUtils.addSprm((short)0x300A, newSEP.getFTitlePage() ? 1 : 0, null, sprmList);
        }
        if (newSEP.getCcolM1() != DEFAULT_SEP.getCcolM1())
        {
            size += SprmUtils.addSprm((short)0x500B, newSEP.getCcolM1(), null, sprmList);
        }
        if (newSEP.getDxaColumns() != DEFAULT_SEP.getDxaColumns())
        {
            size += SprmUtils.addSprm((short)0x900C, newSEP.getDxaColumns(), null, sprmList);
        }
        if (newSEP.getFAutoPgn() != DEFAULT_SEP.getFAutoPgn())
        {
            size += SprmUtils.addSprm((short)0x300D, newSEP.getFAutoPgn() ? 1 : 0, null, sprmList);
        }
        if (newSEP.getNfcPgn() != DEFAULT_SEP.getNfcPgn())
        {
            size += SprmUtils.addSprm((short)0x300E, newSEP.getNfcPgn(), null, sprmList);
        }
        if (newSEP.getDyaPgn() != DEFAULT_SEP.getDyaPgn())
        {
            size += SprmUtils.addSprm((short)0xB00F, newSEP.getDyaPgn(), null, sprmList);
        }
        if (newSEP.getDxaPgn() != DEFAULT_SEP.getDxaPgn())
        {
            size += SprmUtils.addSprm((short)0xB010, newSEP.getDxaPgn(), null, sprmList);
        }
        if (newSEP.getFPgnRestart() != DEFAULT_SEP.getFPgnRestart())
        {
            size += SprmUtils.addSprm((short)0x3011, newSEP.getFPgnRestart() ? 1 : 0, null, sprmList);
        }
        if (newSEP.getFEndNote() != DEFAULT_SEP.getFEndNote())
        {
            size += SprmUtils.addSprm((short)0x3012, newSEP.getFEndNote() ? 1 : 0, null, sprmList);
        }
        if (newSEP.getLnc() != DEFAULT_SEP.getLnc())
        {
            size += SprmUtils.addSprm((short)0x3013, newSEP.getLnc(), null, sprmList);
        }
        if (newSEP.getGrpfIhdt() != DEFAULT_SEP.getGrpfIhdt())
        {
            size += SprmUtils.addSprm((short)0x3014, newSEP.getGrpfIhdt(), null, sprmList);
        }
        if (newSEP.getNLnnMod() != DEFAULT_SEP.getNLnnMod())
        {
            size += SprmUtils.addSprm((short)0x5015, newSEP.getNLnnMod(), null, sprmList);
        }
        if (newSEP.getDxaLnn() != DEFAULT_SEP.getDxaLnn())
        {
            size += SprmUtils.addSprm((short)0x9016, newSEP.getDxaLnn(), null, sprmList);
        }
        if (newSEP.getDyaHdrTop() != DEFAULT_SEP.getDyaHdrTop())
        {
            size += SprmUtils.addSprm((short)0xB017, newSEP.getDyaHdrTop(), null, sprmList);
        }
        if (newSEP.getDyaHdrBottom() != DEFAULT_SEP.getDyaHdrBottom())
        {
            size += SprmUtils.addSprm((short)0xB018, newSEP.getDyaHdrBottom(), null, sprmList);
        }
        if (newSEP.getFLBetween() != DEFAULT_SEP.getFLBetween())
        {
            size += SprmUtils.addSprm((short)0x3019, newSEP.getFLBetween() ? 1 : 0, null, sprmList);
        }
        if (newSEP.getVjc() != DEFAULT_SEP.getVjc())
        {
            size += SprmUtils.addSprm((short)0x301A, newSEP.getVjc(), null, sprmList);
        }
        if (newSEP.getLnnMin() != DEFAULT_SEP.getLnnMin())
        {
            size += SprmUtils.addSprm((short)0x501B, newSEP.getLnnMin(), null, sprmList);
        }
        if (newSEP.getPgnStart() != DEFAULT_SEP.getPgnStart())
        {
            size += SprmUtils.addSprm((short)0x501C, newSEP.getPgnStart(), null, sprmList);
        }
        if (newSEP.getDmOrientPage() != DEFAULT_SEP.getDmOrientPage())
        {
            size += SprmUtils.addSprm((short)0x301D, newSEP.getDmOrientPage() ? 1 : 0, null, sprmList);
        }
        if (newSEP.getXaPage() != DEFAULT_SEP.getXaPage())
        {
            size += SprmUtils.addSprm((short)0xB01F, newSEP.getXaPage(), null, sprmList);
        }
        if (newSEP.getYaPage() != DEFAULT_SEP.getYaPage())
        {
            size += SprmUtils.addSprm((short)0xB020, newSEP.getYaPage(), null, sprmList);
        }
        if (newSEP.getDxaLeft() != DEFAULT_SEP.getDxaLeft())
        {
            size += SprmUtils.addSprm((short)0xB021, newSEP.getDxaLeft(), null, sprmList);
        }
        if (newSEP.getDxaRight() != DEFAULT_SEP.getDxaRight())
        {
            size += SprmUtils.addSprm((short)0xB022, newSEP.getDxaRight(), null, sprmList);
        }
        if (newSEP.getDyaTop() != DEFAULT_SEP.getDyaTop())
        {
            size += SprmUtils.addSprm((short)0x9023, newSEP.getDyaTop(), null, sprmList);
        }
        if (newSEP.getDyaBottom() != DEFAULT_SEP.getDyaBottom())
        {
            size += SprmUtils.addSprm((short)0x9024, newSEP.getDyaBottom(), null, sprmList);
        }
        if (newSEP.getDzaGutter() != DEFAULT_SEP.getDzaGutter())
        {
            size += SprmUtils.addSprm((short)0xB025, newSEP.getDzaGutter(), null, sprmList);
        }
        if (newSEP.getDmPaperReq() != DEFAULT_SEP.getDmPaperReq())
        {
            size += SprmUtils.addSprm((short)0x5026, newSEP.getDmPaperReq(), null, sprmList);
        }
        if (newSEP.getFPropMark() != DEFAULT_SEP.getFPropMark() ||
                newSEP.getIbstPropRMark() != DEFAULT_SEP.getIbstPropRMark() ||
                !newSEP.getDttmPropRMark().equals(DEFAULT_SEP.getDttmPropRMark()))
        {
            byte[] buf = new byte[7];
            buf[0] = (byte)(newSEP.getFPropMark() ? 1 : 0);
            int offset = LittleEndian.BYTE_SIZE;
            LittleEndian.putShort(buf, 0, (short)newSEP.getIbstPropRMark());
            offset += LittleEndian.SHORT_SIZE;
            newSEP.getDttmPropRMark().serialize(buf, offset);
            size += SprmUtils.addSprm((short)0xD227, -1, buf, sprmList);
        }
        if (!newSEP.getBrcTop().equals( DEFAULT_SEP.getBrcTop()))
        {
            size += SprmUtils.addSprm((short)0x702B, newSEP.getBrcTop().toInt(), null, sprmList);
        }
        if (!newSEP.getBrcLeft().equals(DEFAULT_SEP.getBrcLeft()))
        {
            size += SprmUtils.addSprm((short)0x702C, newSEP.getBrcLeft().toInt(), null, sprmList);
        }
        if (!newSEP.getBrcBottom().equals(DEFAULT_SEP.getBrcBottom()))
        {
            size += SprmUtils.addSprm((short)0x702D, newSEP.getBrcBottom().toInt(), null, sprmList);
        }
        if (!newSEP.getBrcRight().equals(DEFAULT_SEP.getBrcRight()))
        {
            size += SprmUtils.addSprm((short)0x702E, newSEP.getBrcRight().toInt(), null, sprmList);
        }
        if (newSEP.getPgbProp() != DEFAULT_SEP.getPgbProp())
        {
            size += SprmUtils.addSprm((short)0x522F, newSEP.getPgbProp(), null, sprmList);
        }
        if (newSEP.getDxtCharSpace() != DEFAULT_SEP.getDxtCharSpace())
        {
            size += SprmUtils.addSprm((short)0x7030, newSEP.getDxtCharSpace(), null, sprmList);
        }
        if (newSEP.getDyaLinePitch() != DEFAULT_SEP.getDyaLinePitch())
        {
            size += SprmUtils.addSprm((short)0x9031, newSEP.getDyaLinePitch(), null, sprmList);
        }
        if (newSEP.getClm() != DEFAULT_SEP.getClm())
        {
            size += SprmUtils.addSprm((short)0x5032, newSEP.getClm(), null, sprmList);
        }
        if (newSEP.getWTextFlow() != DEFAULT_SEP.getWTextFlow())
        {
            size += SprmUtils.addSprm((short)0x5033, newSEP.getWTextFlow(), null, sprmList);
        }

        return SprmUtils.getGrpprl(sprmList, size);
    }
}