/* -*- 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 <PropertyHelper.hxx>

#include <com/sun/star/container/XNameContainer.hpp>

#include <com/sun/star/lang/XMultiServiceFactory.hpp>

#include <docmodel/uno/UnoGradientTools.hxx>

#include <comphelper/sequence.hxx>

#include <osl/diagnose.h>

#include <comphelper/diagnose_ex.hxx>

#include <o3tl/string_view.hxx>

#include <utility>

#include <vector>

#include <algorithm>

#include <iterator>

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

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

using ::com::sun::star::uno::Any;

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

namespace

{

struct lcl_EqualsElement

{

    explicit lcl_EqualsElement( Any  rValue, const Reference< container::XNameAccess > & xAccess )

            : m_aValue(std::move( rValue )), m_xAccess( xAccess )

    {

        OSL_ASSERT( m_xAccess.is());

    }

    bool operator() ( const OUString & rName )

    {

        try

        {

            return (m_xAccess->getByName( rName ) == m_aValue);

        }

        catch( const uno::Exception & )

        {

            DBG_UNHANDLED_EXCEPTION("chart2");

        }

        return false;

    }

private:

    Any m_aValue;

    Reference< container::XNameAccess > m_xAccess;

};

struct lcl_StringMatches

{

    explicit lcl_StringMatches( OUString aCmpStr ) :

            m_aCmpStr(std::move( aCmpStr ))

    {}

    bool operator() ( std::u16string_view rStr )

    {

        return o3tl::starts_with( rStr, m_aCmpStr );

    }

private:

    OUString m_aCmpStr;

};

struct lcl_OUStringRestToInt32

{

    explicit lcl_OUStringRestToInt32( sal_Int32 nPrefixLength ) :

            m_nPrefixLength( nPrefixLength )

    {}

    sal_Int32 operator() ( std::u16string_view rStr )

    {

        if( m_nPrefixLength > static_cast<sal_Int32>(rStr.size()) )

            return 0;

        return o3tl::toInt32(rStr.substr( m_nPrefixLength ));

    }

private:

    sal_Int32 m_nPrefixLength;

};

/** adds a fill gradient, fill hatch, fill bitmap, fill transparency gradient,

    line dash or line marker to the corresponding name container with a unique

    name.

    @param rPrefix

        The prefix used for automated name generation.

    @param rPreferredName

        If this string is not empty it is used as name if it is unique in the

        table. Otherwise a new name is generated using pPrefix.

    @return the new name under which the property was stored in the table

*/

OUString lcl_addNamedPropertyUniqueNameToTable(

    const Any & rValue,

    const Reference< container::XNameContainer > & xNameContainer,

    const OUString & rPrefix,

    const OUString & rPreferredName )

{

    if( ! xNameContainer.is() ||

        ! rValue.hasValue() )

        return rPreferredName;

    Any aValue(rValue);

    if ( rValue.has<css::awt::Gradient>())

    {

        // tdf#158421 the lists for Gradients needs awt::Gradient2

        // as type, convert input data if needed (and warn about it,

        // the caller should be changed to offer the needed type)

        SAL_WARN("chart2","input value needs to be awt::Gradient2");

        const basegfx::BGradient aTemp(model::gradient::getFromAny(rValue));

        aValue <<= model::gradient::createUnoGradient2(aTemp);

    }

    if ( aValue.getValueType() != xNameContainer->getElementType())

        return rPreferredName;

    try

    {

        Reference< container::XNameAccess > xNameAccess( xNameContainer, uno::UNO_QUERY_THROW );

        const uno::Sequence<OUString> aElementNames = xNameAccess->getElementNames();

        auto it = std::find_if( aElementNames.begin(), aElementNames.end(), lcl_EqualsElement( aValue, xNameAccess ));

        // element found => return name

        if( it != aElementNames.end())

            return *it;

        // element not found in container

        OUString aUniqueName;

        // check if preferred name is already used

        if( !rPreferredName.isEmpty())

        {

            auto aIt = std::find( aElementNames.begin(), aElementNames.end(), rPreferredName );

            if( aIt == aElementNames.end())

                aUniqueName = rPreferredName;

        }

        if( aUniqueName.isEmpty())

        {

            auto aNames( comphelper::sequenceToContainer<std::vector< OUString >>( aElementNames ));

            // create a unique id using the prefix plus a number

            std::vector< sal_Int32 > aNumbers;

            std::vector< OUString >::iterator aNonConstIt(

                std::partition( aNames.begin(), aNames.end(), lcl_StringMatches( rPrefix )));

            std::transform( aNames.begin(), aNonConstIt,

                              back_inserter( aNumbers ),

                              lcl_OUStringRestToInt32( rPrefix.getLength() ));

            std::vector< sal_Int32 >::const_iterator aMaxIt(

                std::max_element( aNumbers.begin(), aNumbers.end()));

            sal_Int32 nIndex = 1;

            if( aMaxIt != aNumbers.end())

                nIndex = (*aMaxIt) + 1;

            aUniqueName = rPrefix + OUString::number( nIndex );

        }

        OSL_ASSERT( !aUniqueName.isEmpty());

        xNameContainer->insertByName( aUniqueName, aValue );

        return aUniqueName;

    }

    catch( const uno::Exception & )

    {

        DBG_UNHANDLED_EXCEPTION("chart2");

    }

    return rPreferredName;

}

} // anonymous namespace

namespace chart::PropertyHelper

{

OUString addLineDashUniqueNameToTable(

    const Any & rValue,

    const Reference< lang::XMultiServiceFactory > & xFact,

    const OUString & rPreferredName )

{

    if( xFact.is())

    {

        Reference< container::XNameContainer > xNameCnt(

            xFact->createInstance( u"com.sun.star.drawing.DashTable"_ustr),

            uno::UNO_QUERY );

        if( xNameCnt.is())

            return lcl_addNamedPropertyUniqueNameToTable(

                rValue, xNameCnt, u"ChartDash "_ustr, rPreferredName );

    }

    return OUString();

}

OUString addGradientUniqueNameToTable(

    const Any & rValue,

    const Reference< lang::XMultiServiceFactory > & xFact,

    const OUString & rPreferredName )

{

    if( xFact.is())

    {

        Reference< container::XNameContainer > xNameCnt(

            xFact->createInstance( u"com.sun.star.drawing.GradientTable"_ustr),

            uno::UNO_QUERY );

        if( xNameCnt.is())

            return lcl_addNamedPropertyUniqueNameToTable(

                rValue, xNameCnt, u"ChartGradient "_ustr, rPreferredName );

    }

    return OUString();

}

OUString addTransparencyGradientUniqueNameToTable(

    const Any & rValue,

    const Reference< lang::XMultiServiceFactory > & xFact,

    const OUString & rPreferredName )

{

    if( xFact.is())

    {

        Reference< container::XNameContainer > xNameCnt(

            xFact->createInstance( u"com.sun.star.drawing.TransparencyGradientTable"_ustr),

            uno::UNO_QUERY );

        if( xNameCnt.is())

            return lcl_addNamedPropertyUniqueNameToTable(

                rValue, xNameCnt, u"ChartTransparencyGradient "_ustr, rPreferredName );

    }

    return OUString();

}

OUString addHatchUniqueNameToTable(

    const Any & rValue,

    const Reference< lang::XMultiServiceFactory > & xFact,

    const OUString & rPreferredName )

{

    if( xFact.is())

    {

        Reference< container::XNameContainer > xNameCnt(

            xFact->createInstance( u"com.sun.star.drawing.HatchTable"_ustr),

            uno::UNO_QUERY );

        if( xNameCnt.is())

            return lcl_addNamedPropertyUniqueNameToTable(

                rValue, xNameCnt, u"ChartHatch "_ustr, rPreferredName );

    }

    return OUString();

}

OUString addBitmapUniqueNameToTable(

    const Any & rValue,

    const Reference< lang::XMultiServiceFactory > & xFact,

    const OUString & rPreferredName )

{

    if( xFact.is())

    {

        Reference< container::XNameContainer > xNameCnt(

            xFact->createInstance( u"com.sun.star.drawing.BitmapTable"_ustr),

            uno::UNO_QUERY );

        if( xNameCnt.is())

            return lcl_addNamedPropertyUniqueNameToTable(

                rValue, xNameCnt, u"ChartBitmap "_ustr, rPreferredName );

    }

    return OUString();

}

void setPropertyValueAny( tPropertyValueMap & rOutMap, tPropertyValueMapKey key, const uno::Any & rAny )

{

    tPropertyValueMap::iterator aIt( rOutMap.find( key ));

    if( aIt == rOutMap.end())

        rOutMap.emplace( key, rAny );

    else

        (*aIt).second = rAny;

}

template<>

    void setPropertyValue< css::uno::Any >( tPropertyValueMap & rOutMap, tPropertyValueMapKey key, const css::uno::Any & rAny )

{

    setPropertyValueAny( rOutMap, key, rAny );

}

void setPropertyValueDefaultAny( tPropertyValueMap & rOutMap, tPropertyValueMapKey key, const uno::Any & rAny )

{

    OSL_ENSURE( rOutMap.end() == rOutMap.find( key ), "Default already exists for property" );

    setPropertyValue( rOutMap, key, rAny );

}

template<>

    void setPropertyValueDefault< css::uno::Any >( tPropertyValueMap & rOutMap, tPropertyValueMapKey key, const css::uno::Any & rAny )

{

    setPropertyValueDefaultAny( rOutMap, key, rAny );

}

void setEmptyPropertyValueDefault( tPropertyValueMap & rOutMap, tPropertyValueMapKey key )

{

    setPropertyValueDefault( rOutMap, key, uno::Any());

}

} //  namespace chart::PropertyHelper

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