/* -*- 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 "Tickmarks_Dates.hxx"

#include "DateScaling.hxx"

#include <rtl/math.hxx>

#include <osl/diagnose.h>

#include <DateHelper.hxx>

#include <com/sun/star/chart/TimeUnit.hpp>

#include <utility>

namespace chart

{

using namespace ::com::sun::star;

using namespace ::com::sun::star::chart2;

using namespace ::rtl::math;

using ::com::sun::star::chart::TimeUnit::DAY;

using ::com::sun::star::chart::TimeUnit::MONTH;

using ::com::sun::star::chart::TimeUnit::YEAR;

DateTickFactory::DateTickFactory(

          ExplicitScaleData aScale, ExplicitIncrementData aIncrement )

            : m_aScale(std::move( aScale ))

            , m_aIncrement(std::move( aIncrement ))

{

    //@todo: make sure that the scale is valid for the scaling

    if( m_aScale.Scaling.is() )

    {

        m_xInverseScaling = m_aScale.Scaling->getInverseScaling();

        OSL_ENSURE( m_xInverseScaling.is(), "each Scaling needs to return an inverse Scaling" );

    }

}

DateTickFactory::~DateTickFactory()

{

}

void DateTickFactory::getAllTicks( TickInfoArraysType& rAllTickInfos, bool bShifted ) const

{

    rAllTickInfos.resize(2);

    TickInfoArrayType& rMajorTicks = rAllTickInfos[0];

    TickInfoArrayType& rMinorTicks = rAllTickInfos[1];

    rMajorTicks.clear();

    rMinorTicks.clear();

    Date aNull(m_aScale.NullDate);

    Date aDate = aNull + static_cast<sal_Int32>(::rtl::math::approxFloor(m_aScale.Minimum));

    Date aMaxDate = aNull + static_cast<sal_Int32>(::rtl::math::approxFloor(m_aScale.Maximum));

    uno::Reference< chart2::XScaling > xScaling(m_aScale.Scaling);

    uno::Reference< chart2::XScaling > xInverseScaling(m_xInverseScaling);

    if( bShifted )

    {

        xScaling = new DateScaling(aNull,m_aScale.TimeResolution,true/*bShifted*/);

        xInverseScaling = xScaling->getInverseScaling();

    }

    //create major date tickinfos

    while( aDate<= aMaxDate )

    {

        if( bShifted && aDate==aMaxDate )

            break;

        TickInfo aNewTick(xInverseScaling); aNewTick.fScaledTickValue = aDate - aNull;

        if( xInverseScaling.is() )

            aNewTick.fScaledTickValue = xScaling->doScaling(aNewTick.fScaledTickValue);

        rMajorTicks.push_back( aNewTick );

        if(m_aIncrement.MajorTimeInterval.Number<=0)

            break;

        //find next major date

        switch( m_aIncrement.MajorTimeInterval.TimeUnit )

        {

        case DAY:

            aDate.AddDays( m_aIncrement.MajorTimeInterval.Number );

            break;

        case YEAR:

            aDate = DateHelper::GetDateSomeYearsAway( aDate, m_aIncrement.MajorTimeInterval.Number );

            break;

        case MONTH:

        default:

            aDate = DateHelper::GetDateSomeMonthsAway( aDate, m_aIncrement.MajorTimeInterval.Number );

            break;

        }

    }

    //create minor date tickinfos

    aDate = aNull + static_cast<sal_Int32>(::rtl::math::approxFloor(m_aScale.Minimum));

    while( aDate<= aMaxDate )

    {

        if( bShifted && aDate==aMaxDate )

            break;

        TickInfo aNewTick(xInverseScaling); aNewTick.fScaledTickValue = aDate - aNull;

        if( xInverseScaling.is() )

            aNewTick.fScaledTickValue = xScaling->doScaling(aNewTick.fScaledTickValue);

        rMinorTicks.push_back( aNewTick );

        if(m_aIncrement.MinorTimeInterval.Number<=0)

            break;

        //find next minor date

        switch( m_aIncrement.MinorTimeInterval.TimeUnit )

        {

        case DAY:

            aDate.AddDays( m_aIncrement.MinorTimeInterval.Number );

            break;

        case YEAR:

            aDate = DateHelper::GetDateSomeYearsAway( aDate, m_aIncrement.MinorTimeInterval.Number );

            break;

        case MONTH:

        default:

            aDate = DateHelper::GetDateSomeMonthsAway( aDate, m_aIncrement.MinorTimeInterval.Number );

            break;

        }

    }

}

void DateTickFactory::getAllTicks( TickInfoArraysType& rAllTickInfos ) const

{

    getAllTicks( rAllTickInfos, false );

}

void DateTickFactory::getAllTicksShifted( TickInfoArraysType& rAllTickInfos ) const

{

    getAllTicks( rAllTickInfos, true );

}

} //namespace chart

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