/* -*- 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 <DataInterpreter.hxx>

#include <DataSeries.hxx>

#include <DataSource.hxx>

#include <DataSeriesHelper.hxx>

#include <CommonConverters.hxx>

#include <com/sun/star/beans/XPropertySet.hpp>

#include <cppuhelper/supportsservice.hxx>

#include <comphelper/diagnose_ex.hxx>

#include <algorithm>

#include <cstddef>

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

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

using ::com::sun::star::uno::Reference;

using ::com::sun::star::uno::Sequence;

#ifdef DEBUG_CHART2_TEMPLATE

namespace

{

void lcl_ShowDataSource( const Reference< data::XDataSource > & xSource );

}

#endif

namespace chart

{

DataInterpreter::DataInterpreter()

{}

DataInterpreter::~DataInterpreter()

{}

// ____ XDataInterpreter ____

InterpretedData DataInterpreter::interpretDataSource(

    const Reference< data::XDataSource >& xSource,

    const Sequence< beans::PropertyValue >& aArguments,

    const std::vector< rtl::Reference< DataSeries > >& aSeriesToReUse )

{

    if( ! xSource.is())

        return InterpretedData();

#ifdef DEBUG_CHART2_TEMPLATE

    lcl_ShowDataSource( xSource );

#endif

    std::vector< uno::Reference< chart2::data::XLabeledDataSequence > > aData = getDataSequences(xSource);

    uno::Reference< chart2::data::XLabeledDataSequence > xCategories;

    std::vector< uno::Reference< chart2::data::XLabeledDataSequence > > aSequencesVec;

    // check if we should use categories

    bool bHasCategories( HasCategories( aArguments, aData ));

    // parse data

    bool bCategoriesUsed = false;

    for( uno::Reference< chart2::data::XLabeledDataSequence > const & labeledData : aData )

    {

        try

        {

            if( bHasCategories && ! bCategoriesUsed )

            {

                xCategories = labeledData;

                if( xCategories.is())

                    SetRole( xCategories->getValues(), u"categories"_ustr);

                bCategoriesUsed = true;

            }

            else

            {

                aSequencesVec.push_back( labeledData );

                if( labeledData.is())

                    SetRole( labeledData->getValues(), u"values-y"_ustr);

            }

        }

        catch( const uno::Exception & )

        {

            DBG_UNHANDLED_EXCEPTION("chart2");

        }

    }

    // create DataSeries

    std::size_t nSeriesIndex = 0;

    std::vector< rtl::Reference< DataSeries > > aSeriesVec;

    aSeriesVec.reserve( aSequencesVec.size());

    for (auto const& elem : aSequencesVec)

    {

        std::vector< uno::Reference< chart2::data::XLabeledDataSequence > > aNewData { elem };

        rtl::Reference< DataSeries > xSeries;

        if( nSeriesIndex < aSeriesToReUse.size())

            xSeries = aSeriesToReUse[nSeriesIndex];

        else

            xSeries = new DataSeries;

        assert( xSeries.is() );

        xSeries->setData( aNewData );

        aSeriesVec.push_back( xSeries );

        ++nSeriesIndex;

    }

    return { { std::move(aSeriesVec) }, xCategories };

}

InterpretedData DataInterpreter::reinterpretDataSeries(

    const InterpretedData& aInterpretedData )

{

    InterpretedData aResult( aInterpretedData );

    sal_Int32 i=0;

    std::vector< rtl::Reference< DataSeries > > aSeries( FlattenSequence( aInterpretedData.Series ));

    const sal_Int32 nCount = aSeries.size();

    for( ; i<nCount; ++i )

    {

        try

        {

            std::vector< uno::Reference< data::XLabeledDataSequence > > aNewSequences;

            // values-y

            uno::Reference< data::XLabeledDataSequence > xValuesY =

                DataSeriesHelper::getDataSequenceByRole( aSeries[i], u"values-y"_ustr );

            // re-use values-... as values-y

            if( ! xValuesY.is())

            {

                xValuesY =

                    DataSeriesHelper::getDataSequenceByRole( aSeries[i], u"values"_ustr, true );

                if( xValuesY.is())

                    SetRole( xValuesY->getValues(), u"values-y"_ustr);

            }

            if( xValuesY.is())

            {

                aNewSequences = { xValuesY };

            }

            const std::vector< uno::Reference< data::XLabeledDataSequence > > & aSeqs = aSeries[i]->getDataSequences2();

            if( aSeqs.size() != aNewSequences.size() )

            {

#ifdef DEBUG_CHART2_TEMPLATE

                sal_Int32 j=0;

                for( ; j<aSeqs.(); ++j )

                {

                    assert( aSeqs[j] == xValuesY && "All sequences should be used" );

                }

#endif

                aSeries[i]->setData( aNewSequences );

            }

        }

        catch( const uno::Exception & )

        {

            DBG_UNHANDLED_EXCEPTION("chart2");

        }

    }

    return aResult;

}

// criterion: all series must have exactly one data::XLabeledDataSequence

bool DataInterpreter::isDataCompatible(

    const InterpretedData& aInterpretedData )

{

    const std::vector< rtl::Reference< DataSeries > > aSeries( FlattenSequence( aInterpretedData.Series ));

    for( rtl::Reference< DataSeries > const & i : aSeries )

    {

        try

        {

            if( i->getDataSequences2().size() != 1 )

                return false;

        }

        catch( const uno::Exception & )

        {

            DBG_UNHANDLED_EXCEPTION("chart2");

        }

    }

    return true;

}

namespace

{

struct lcl_LabeledSequenceEquals

{

    explicit lcl_LabeledSequenceEquals( const Reference< data::XLabeledDataSequence > & xLSeqToCmp ) :

            m_bHasLabels ( false ),

            m_bHasValues ( false )

    {

        if( !xLSeqToCmp.is())

            return;

        Reference< data::XDataSequence > xSeq( xLSeqToCmp->getValues());

        if( xSeq.is())

        {

            m_bHasValues = true;

            m_aValuesRangeRep = xSeq->getSourceRangeRepresentation();

        }

        xSeq.set( xLSeqToCmp->getLabel());

        if( xSeq.is())

        {

            m_bHasLabels = true;

            m_aLabelRangeRep = xSeq->getSourceRangeRepresentation();

        }

    }

    bool operator() ( const Reference< data::XLabeledDataSequence > & xSeq )

    {

        if( ! xSeq.is())

            return false;

        Reference< data::XDataSequence > xSeqValues( xSeq->getValues() );

        Reference< data::XDataSequence > xSeqLabels( xSeq->getLabel() );

        bool bHasValues = xSeqValues.is();

        bool bHasLabels = xSeqLabels.is();

        return ( ( (m_bHasValues == bHasValues) &&

                   (!bHasValues || m_aValuesRangeRep == xSeqValues->getSourceRangeRepresentation()) ) &&

                 ( (m_bHasLabels == bHasLabels) &&

                   (!bHasLabels || m_aLabelRangeRep == xSeqLabels->getSourceRangeRepresentation()) )

            );

    }

private:

    bool m_bHasLabels;

    bool m_bHasValues;

    OUString m_aValuesRangeRep;

    OUString m_aLabelRangeRep;

};

} // anonymous namespace

rtl::Reference< DataSource > DataInterpreter::mergeInterpretedData(

    const InterpretedData& aInterpretedData )

{

    std::vector< Reference< data::XLabeledDataSequence > > aResultVec;

    aResultVec.reserve( aInterpretedData.Series.size() +

                        1 // categories

        );

    if( aInterpretedData.Categories.is())

        aResultVec.push_back( aInterpretedData.Categories );

    const std::vector< rtl::Reference< DataSeries > > aSeries = FlattenSequence( aInterpretedData.Series );

    for( rtl::Reference< DataSeries > const & dataSeries : aSeries )

    {

        try

        {

            // add all sequences of data series

            for( uno::Reference< data::XLabeledDataSequence > const & xAdd : dataSeries->getDataSequences2() )

            {

                // only add if sequence is not yet in the result

                if( none_of( aResultVec.begin(), aResultVec.end(),

                             lcl_LabeledSequenceEquals( xAdd )) )

                {

                    aResultVec.push_back( xAdd );

                }

            }

        }

        catch( const uno::Exception & )

        {

            DBG_UNHANDLED_EXCEPTION("chart2");

        }

    }

    return new DataSource(aResultVec);

}

uno::Any DataInterpreter::getChartTypeSpecificData(

    const OUString & )

{

    return uno::Any();

}

// convenience methods

OUString DataInterpreter::GetRole( const Reference< data::XDataSequence > & xSeq )

{

    OUString aResult;

    if( ! xSeq.is())

        return aResult;

    try

    {

        Reference< beans::XPropertySet > xProp( xSeq, uno::UNO_QUERY_THROW );

        xProp->getPropertyValue( u"Role"_ustr) >>= aResult;

    }

    catch( const uno::Exception & )

    {

        DBG_UNHANDLED_EXCEPTION("chart2");

    }

    return aResult;

}

void DataInterpreter::SetRole( const Reference< data::XDataSequence > & xSeq, const OUString & rRole )

{

    if( ! xSeq.is())

        return;

    try

    {

        Reference< beans::XPropertySet > xProp( xSeq, uno::UNO_QUERY_THROW );

        xProp->setPropertyValue( u"Role"_ustr, uno::Any( rRole ));

    }

    catch( const uno::Exception & )

    {

        DBG_UNHANDLED_EXCEPTION("chart2");

    }

}

uno::Any DataInterpreter::GetProperty(

    const Sequence< beans::PropertyValue > & aArguments,

    std::u16string_view rName )

{

    for( sal_Int32 i=aArguments.getLength(); i--; )

    {

        if( aArguments[i].Name == rName )

            return aArguments[i].Value;

    }

    return uno::Any();

}

bool DataInterpreter::HasCategories(

    const Sequence< beans::PropertyValue > & rArguments,

    const std::vector< uno::Reference< chart2::data::XLabeledDataSequence > > & rData )

{

    bool bHasCategories = false;

    if( rArguments.hasElements() )

        GetProperty( rArguments, u"HasCategories" ) >>= bHasCategories;

    for( std::size_t nLSeqIdx=0; ! bHasCategories && nLSeqIdx<rData.size(); ++nLSeqIdx )

        bHasCategories = ( rData[nLSeqIdx].is() && GetRole( rData[nLSeqIdx]->getValues() ) == "categories");

    return bHasCategories;

}

bool DataInterpreter::UseCategoriesAsX( const Sequence< beans::PropertyValue > & rArguments )

{

    bool bUseCategoriesAsX = true;

    if( rArguments.hasElements() )

        GetProperty( rArguments, u"UseCategoriesAsX" ) >>= bUseCategoriesAsX;

    return bUseCategoriesAsX;

}

OUString SAL_CALL DataInterpreter::getImplementationName()

{

    return u"com.sun.star.comp.chart2.DataInterpreter"_ustr;

}

sal_Bool SAL_CALL DataInterpreter::supportsService( const OUString& rServiceName )

{

    return cppu::supportsService(this, rServiceName);

}

css::uno::Sequence< OUString > SAL_CALL DataInterpreter::getSupportedServiceNames()

{

    return { u"com.sun.star.chart2.DataInterpreter"_ustr };

}

std::vector< uno::Reference< chart2::data::XLabeledDataSequence > > DataInterpreter::getDataSequences(

        const css::uno::Reference< css::chart2::data::XDataSource >& xSource)

{

    std::vector< uno::Reference< chart2::data::XLabeledDataSequence > > aData;

    for (const Reference< data::XLabeledDataSequence > & rLDS : xSource->getDataSequences() )

    {

        aData.push_back(rLDS);

    }

    return aData;

}

} // namespace chart

#ifdef DEBUG_CHART2_TEMPLATE

namespace

{

void lcl_ShowDataSource( const Reference< data::XDataSource > & xSource )

{

    if( ! xSource.is())

        return;

    SAL_INFO("chart2", "DataSource in DataInterpreter:" );

    Sequence< Reference< data::XLabeledDataSequence > > aSequences( xSource->getDataSequences());

    Reference< beans::XPropertySet > xProp;

    OUString aId;

    const sal_Int32 nMax = aSequences.getLength();

    for( sal_Int32 k = 0; k < nMax; ++k )

    {

        if( aSequences[k].is())

        {

            OUString aSourceRepr(u"<none>"_ustr);

            if( aSequences[k]->getValues().is())

                aSourceRepr = aSequences[k]->getValues()->getSourceRangeRepresentation();

            xProp.set( aSequences[k]->getValues(), uno::UNO_QUERY );

            if( xProp.is() &&

                ( xProp->getPropertyValue( "Role") >>= aId ))

            {

                SAL_INFO("chart2", "  <data sequence " << k << "> Role: " << aId << ", Source: "<< aSourceRepr);

            }

            else

            {

                SAL_INFO("chart2", "  <data sequence " << k << "> unknown Role, Source: " << aSourceRepr );

            }

            aSourceRepr = u"<none>"_ustr;

            if( aSequences[k]->getLabel().is())

                aSourceRepr = aSequences[k]->getLabel()->getSourceRangeRepresentation();

            xProp.set( aSequences[k]->getLabel(), uno::UNO_QUERY );

            if( xProp.is() &&

                ( xProp->getPropertyValue( "Role") >>= aId ))

            {

                SAL_INFO("chart2", "  <data sequence label " << k << "> Role: " << aId

                        << ", Source: " << aSourceRepr );

            }

            else

            {

                SAL_INFO("chart2", "  <data sequence label " << k << "> unknown Role, Source: " << aSourceRepr );

            }

        }

    }

}

}

#endif

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