/* -*- 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 .

 */

#pragma once

#include <sal/types.h>

#include <map>

#include <VCoordinateSystem.hxx>

#include <AxisHelper.hxx>

#include <ScaleAutomatism.hxx>

namespace chart

{

//first index is the dimension, second index is the axis index that indicates whether this is a main or secondary axis

typedef std::pair<sal_Int32, sal_Int32> tFullAxisIndex;

typedef std::map<VCoordinateSystem*, tFullAxisIndex> tCoordinateSystemMap;

/** This class handles a collection of coordinate systems and is used for

 *  executing some action on all coordinate systems such as

 *  "prepareAutomaticAxisScaling" and "setExplicitScaleAndIncrement".

 *  Moreover it contains the "aAutoScaling" object that is an instance of

 *  the "ScaleAutomatism" class. The initialization of "aAutoScaling" is

 *  performed in the "SeriesPlotterContainer::initAxisUsageList" method and is

 *  used in the "SeriesPlotterContainer::doAutoScaling" for calculating explicit

 *  scale and increment objects (see "SeriesPlotterContainer::doAutoScaling").

 */

class AxisUsage

{

public:

    AxisUsage()

        : aAutoScaling(AxisHelper::createDefaultScale(), Date(Date::SYSTEM))

    {

    }

    void addCoordinateSystem(VCoordinateSystem* pCooSys, sal_Int32 nDimensionIndex,

                             sal_Int32 nAxisIndex)

    {

        if (!pCooSys)

            return;

        tFullAxisIndex aFullAxisIndex(nDimensionIndex, nAxisIndex);

        tCoordinateSystemMap::const_iterator aFound(aCoordinateSystems.find(pCooSys));

        //use one scale only once for each coordinate system

        //main axis are preferred over secondary axis

        //value scales are preferred

        if (aFound != aCoordinateSystems.end())

        {

            sal_Int32 nFoundAxisIndex = aFound->second.second;

            if (nFoundAxisIndex < nAxisIndex)

                return;

            sal_Int32 nFoundDimension = aFound->second.first;

            if (nFoundDimension == 1)

                return;

            if (nFoundDimension < nDimensionIndex)

                return;

        }

        aCoordinateSystems[pCooSys] = std::move(aFullAxisIndex);

        //set maximum scale index

        auto aIter = aMaxIndexPerDimension.find(nDimensionIndex);

        if (aIter != aMaxIndexPerDimension.end())

        {

            sal_Int32 nCurrentMaxIndex = aIter->second;

            if (nCurrentMaxIndex < nAxisIndex)

                aMaxIndexPerDimension[nDimensionIndex] = nAxisIndex;

        }

        else

            aMaxIndexPerDimension[nDimensionIndex] = nAxisIndex;

    }

    std::vector<VCoordinateSystem*> getCoordinateSystems(sal_Int32 nDimensionIndex,

                                                         sal_Int32 nAxisIndex)

    {

        std::vector<VCoordinateSystem*> aRet;

        for (auto const& coordinateSystem : aCoordinateSystems)

        {

            if (coordinateSystem.second.first != nDimensionIndex)

                continue;

            if (coordinateSystem.second.second != nAxisIndex)

                continue;

            aRet.push_back(coordinateSystem.first);

        }

        return aRet;

    }

    sal_Int32 getMaxAxisIndexForDimension(sal_Int32 nDimensionIndex)

    {

        sal_Int32 nRet = -1;

        auto aIter = aMaxIndexPerDimension.find(nDimensionIndex);

        if (aIter != aMaxIndexPerDimension.end())

            nRet = aIter->second;

        return nRet;

    }

    void prepareAutomaticAxisScaling(ScaleAutomatism& rScaleAutomatism, sal_Int32 nDimIndex,

                                     sal_Int32 nAxisIndex)

    {

        std::vector<VCoordinateSystem*> aVCooSysList = getCoordinateSystems(nDimIndex, nAxisIndex);

        for (VCoordinateSystem* pVCoordinateSystem : aVCooSysList)

            pVCoordinateSystem->prepareAutomaticAxisScaling(rScaleAutomatism, nDimIndex,

                                                            nAxisIndex);

    }

    void setExplicitScaleAndIncrement(sal_Int32 nDimIndex, sal_Int32 nAxisIndex,

                                      const ExplicitScaleData& rScale,

                                      const ExplicitIncrementData& rInc)

    {

        std::vector<VCoordinateSystem*> aVCooSysList = getCoordinateSystems(nDimIndex, nAxisIndex);

        for (VCoordinateSystem* pVCoordinateSystem : aVCooSysList)

            pVCoordinateSystem->setExplicitScaleAndIncrement(nDimIndex, nAxisIndex, rScale, rInc);

    }

    ScaleAutomatism aAutoScaling;

private:

    tCoordinateSystemMap aCoordinateSystems;

    std::map<sal_Int32, sal_Int32> aMaxIndexPerDimension;

};

} //end chart2 namespace

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