/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */

#include <sortparam.hxx>
#include <global.hxx>
#include <address.hxx>
#include <queryparam.hxx>
#include <subtotalparam.hxx>

#include <osl/diagnose.h>

#include <algorithm>

ScSortParam::ScSortParam()
{
    Clear();
}

ScSortParam::ScSortParam( const ScSortParam& r ) :
        nCol1(r.nCol1),nRow1(r.nRow1),nCol2(r.nCol2),nRow2(r.nRow2),nUserIndex(r.nUserIndex),
        bHasHeader(r.bHasHeader),bByRow(r.bByRow),bCaseSens(r.bCaseSens),
        bNaturalSort(r.bNaturalSort),bIncludeComments(r.bIncludeComments),
        bIncludeGraphicObjects(r.bIncludeGraphicObjects),bUserDef(r.bUserDef),
        bIncludePattern(r.bIncludePattern),bInplace(r.bInplace),
        nDestTab(r.nDestTab),nDestCol(r.nDestCol),nDestRow(r.nDestRow),
        maKeyState( r.maKeyState ),
        aCollatorLocale( r.aCollatorLocale ), aCollatorAlgorithm( r.aCollatorAlgorithm ),
        nCompatHeader( r.nCompatHeader )
{
}

ScSortParam::~ScSortParam() {}

void ScSortParam::Clear()
{
    ScSortKeyState aKeyState;

    nCol1=nCol2=nDestCol = 0;
    nRow1=nRow2=nDestRow = 0;
    nCompatHeader = 2;
    nDestTab = 0;
    nUserIndex = 0;
    bHasHeader=bCaseSens=bUserDef=bNaturalSort = false;
    bIncludeComments = false;
    bIncludeGraphicObjects = true;
    bByRow=bIncludePattern=bInplace = true;
    aCollatorLocale = css::lang::Locale();
    aCollatorAlgorithm.clear();

    aKeyState.bDoSort = false;
    aKeyState.nField = 0;
    aKeyState.bAscending = true;

    // Initialize to default size
    maKeyState.assign( DEFSORT, aKeyState );
}

ScSortParam& ScSortParam::operator=( const ScSortParam& r )
{
    nCol1           = r.nCol1;
    nRow1           = r.nRow1;
    nCol2           = r.nCol2;
    nRow2           = r.nRow2;
    nUserIndex      = r.nUserIndex;
    bHasHeader      = r.bHasHeader;
    bByRow          = r.bByRow;
    bCaseSens       = r.bCaseSens;
    bNaturalSort    = r.bNaturalSort;
    bIncludeComments= r.bIncludeComments;
    bIncludeGraphicObjects = r.bIncludeGraphicObjects;
    bUserDef        = r.bUserDef;
    bIncludePattern = r.bIncludePattern;
    bInplace        = r.bInplace;
    nDestTab        = r.nDestTab;
    nDestCol        = r.nDestCol;
    nDestRow        = r.nDestRow;
    maKeyState      = r.maKeyState;
    aCollatorLocale         = r.aCollatorLocale;
    aCollatorAlgorithm      = r.aCollatorAlgorithm;
    nCompatHeader   = r.nCompatHeader;

    return *this;
}

bool ScSortParam::operator==( const ScSortParam& rOther ) const
{
    bool bEqual = false;
    // Number of Sorts the same?
    sal_uInt16 nLast      = 0;
    sal_uInt16 nOtherLast = 0;
    sal_uInt16 nSortSize = GetSortKeyCount();

    if ( !maKeyState.empty() )
    {
        while ( maKeyState[nLast++].bDoSort && nLast < nSortSize ) ;
        nLast--;
    }

    if ( !rOther.maKeyState.empty() )
    {
        while ( rOther.maKeyState[nOtherLast++].bDoSort && nOtherLast < nSortSize ) ;
        nOtherLast--;
    }

    if (   (nLast           == nOtherLast)
        && (nCol1           == rOther.nCol1)
        && (nRow1           == rOther.nRow1)
        && (nCol2           == rOther.nCol2)
        && (nRow2           == rOther.nRow2)
        && (bHasHeader      == rOther.bHasHeader)
        && (bByRow          == rOther.bByRow)
        && (bCaseSens       == rOther.bCaseSens)
        && (bNaturalSort    == rOther.bNaturalSort)
        && (bIncludeComments== rOther.bIncludeComments)
        && (bIncludeGraphicObjects == rOther.bIncludeGraphicObjects)
        && (bUserDef        == rOther.bUserDef)
        && (nUserIndex      == rOther.nUserIndex)
        && (bIncludePattern == rOther.bIncludePattern)
        && (bInplace        == rOther.bInplace)
        && (nDestTab        == rOther.nDestTab)
        && (nDestCol        == rOther.nDestCol)
        && (nDestRow        == rOther.nDestRow)
        && (aCollatorLocale.Language    == rOther.aCollatorLocale.Language)
        && (aCollatorLocale.Country     == rOther.aCollatorLocale.Country)
        && (aCollatorLocale.Variant     == rOther.aCollatorLocale.Variant)
        && (aCollatorAlgorithm          == rOther.aCollatorAlgorithm)
        && ( !maKeyState.empty() || !rOther.maKeyState.empty() )
        )
    {
        bEqual = true;
        for ( sal_uInt16 i=0; i<=nLast && bEqual; i++ )
            bEqual = ( maKeyState[i].nField == rOther.maKeyState[i].nField ) &&
                ( maKeyState[i].bAscending  == rOther.maKeyState[i].bAscending );
    }
    if ( maKeyState.empty() && rOther.maKeyState.empty() )
        bEqual = true;

    return bEqual;
}

ScSortParam::ScSortParam( const ScSubTotalParam& rSub, const ScSortParam& rOld ) :
        nCol1(rSub.nCol1),nRow1(rSub.nRow1),nCol2(rSub.nCol2),nRow2(rSub.nRow2),nUserIndex(rSub.nUserIndex),
        bHasHeader(true),bByRow(true),bCaseSens(rSub.bCaseSens),bNaturalSort(rOld.bNaturalSort),
        bIncludeComments(rOld.bIncludeComments),bIncludeGraphicObjects(rOld.bIncludeGraphicObjects),
        bUserDef(rSub.bUserDef),bIncludePattern(rSub.bIncludePattern),
        bInplace(true),
        nDestTab(0),nDestCol(0),nDestRow(0),
        aCollatorLocale( rOld.aCollatorLocale ), aCollatorAlgorithm( rOld.aCollatorAlgorithm ),
        nCompatHeader( rOld.nCompatHeader )
{
    sal_uInt16 i;

    //  first the groups from the partial results
    if (rSub.bDoSort)
        for (i=0; i<MAXSUBTOTAL; i++)
            if (rSub.bGroupActive[i])
            {
                ScSortKeyState key;
                key.bDoSort = true;
                key.nField = rSub.nField[i];
                key.bAscending = rSub.bAscending;
                maKeyState.push_back(key);
            }

    //  then the old settings
    for (i=0; i < rOld.GetSortKeyCount(); i++)
        if (rOld.maKeyState[i].bDoSort)
        {
            SCCOLROW nThisField = rOld.maKeyState[i].nField;
            bool bDouble = false;
            for (sal_uInt16 j = 0; j < GetSortKeyCount(); j++)
                if ( maKeyState[j].nField == nThisField )
                    bDouble = true;
            if (!bDouble)               // do not enter a field twice
            {
                ScSortKeyState key;
                key.bDoSort = true;
                key.nField = nThisField;
                key.bAscending = rOld.maKeyState[i].bAscending;
                maKeyState.push_back(key);
            }
        }
}

ScSortParam::ScSortParam( const ScQueryParam& rParam, SCCOL nCol ) :
        nCol1(nCol),nRow1(rParam.nRow1),nCol2(nCol),nRow2(rParam.nRow2),nUserIndex(0),
        bHasHeader(rParam.bHasHeader),bByRow(true),bCaseSens(rParam.bCaseSens),
        bNaturalSort(false),bIncludeComments(false),bIncludeGraphicObjects(true),
//TODO: what about Locale and Algorithm?
        bUserDef(false),bIncludePattern(false),
        bInplace(true),
        nDestTab(0),nDestCol(0),nDestRow(0), nCompatHeader(2)
{
    ScSortKeyState aKeyState;
    aKeyState.bDoSort = true;
    aKeyState.nField = nCol;
    aKeyState.bAscending = true;

    maKeyState.push_back( aKeyState );

    // Set the rest
    aKeyState.bDoSort = false;
    aKeyState.nField = 0;

    for (sal_uInt16 i=1; i<GetSortKeyCount(); i++)
        maKeyState.push_back( aKeyState );
}

void ScSortParam::MoveToDest()
{
    if (!bInplace)
    {
        SCCOL nDifX = nDestCol - nCol1;
        SCROW nDifY = nDestRow - nRow1;

        nCol1 = sal::static_int_cast<SCCOL>( nCol1 + nDifX );
        nRow1 = sal::static_int_cast<SCROW>( nRow1 + nDifY );
        nCol2 = sal::static_int_cast<SCCOL>( nCol2 + nDifX );
        nRow2 = sal::static_int_cast<SCROW>( nRow2 + nDifY );
        for (sal_uInt16 i=0; i<GetSortKeyCount(); i++)
            if (bByRow)
                maKeyState[i].nField += nDifX;
            else
                maKeyState[i].nField += nDifY;

        bInplace = true;
    }
    else
    {
        OSL_FAIL("MoveToDest, bInplace == TRUE");
    }
}

namespace sc {

namespace {

struct ReorderIndex
{
    struct LessByPos2
    {
        bool operator() ( const ReorderIndex& r1, const ReorderIndex& r2 ) const
        {
            return r1.mnPos2 < r2.mnPos2;
        }
    };

    SCCOLROW mnPos1;
    SCCOLROW mnPos2;

    ReorderIndex( SCCOLROW nPos1, SCCOLROW nPos2 ) : mnPos1(nPos1), mnPos2(nPos2) {}
};

}

void ReorderParam::reverse()
{
    SCCOLROW nStart;
    if (mbByRow)
        nStart = maSortRange.aStart.Row();
    else
        nStart = maSortRange.aStart.Col();

    size_t n = maOrderIndices.size();
    std::vector<ReorderIndex> aBucket;
    aBucket.reserve(n);
    for (size_t i = 0; i < n; ++i)
    {
        SCCOLROW nPos1 = i + nStart;
        SCCOLROW nPos2 = maOrderIndices[i];
        aBucket.emplace_back(nPos1, nPos2);
    }

    std::sort(aBucket.begin(), aBucket.end(), ReorderIndex::LessByPos2());
    std::vector<SCCOLROW> aNew;
    aNew.reserve(n);
    for (size_t i = 0; i < n; ++i)
        aNew.push_back(aBucket[i].mnPos1);

    maOrderIndices.swap(aNew);
}

}

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