/* -*- 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 <InternalData.hxx>
#include <ResId.hxx>
#include <strings.hrc>

#include <osl/diagnose.h>
#include <rtl/math.hxx>
#ifdef DEBUG_CHART2_TOOLS
#define DEBUG_INTERNAL_DATA 1
#endif

#ifdef DEBUG_INTERNAL_DATA
#include <svl/gridprinter.hxx>
#endif

#include <algorithm>
#include <iterator>

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

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

namespace chart
{

namespace
{
struct lcl_NumberedStringGenerator
{
    lcl_NumberedStringGenerator( const OUString & rStub, const OUString & rWildcard ) :
            m_aStub( rStub ),
            m_nCounter( 0 ),
            m_nStubStartIndex( rStub.indexOf( rWildcard )),
            m_nWildcardLength( rWildcard.getLength())
    {
    }
    vector< uno::Any > operator()()
    {
        vector< uno::Any > aRet(1);
        aRet[0] <<= m_aStub.replaceAt( m_nStubStartIndex, m_nWildcardLength, OUString::number( ++m_nCounter ));
        return aRet;
    }
private:
    OUString m_aStub;
    sal_Int32 m_nCounter;
    const sal_Int32 m_nStubStartIndex;
    const sal_Int32 m_nWildcardLength;
};

template< typename T >
    Sequence< T > lcl_ValarrayToSequence( const std::valarray< T > & rValarray )
{
    // is there a more elegant way of conversion?
    Sequence< T > aResult( rValarray.size());
    for( size_t i = 0; i < rValarray.size(); ++i )
        aResult[i] = rValarray[i];
    return aResult;
}

} // anonymous namespace

InternalData::InternalData()
    : m_nColumnCount( 0 )
    , m_nRowCount( 0 )
    , m_aRowLabels( 0 )
    , m_aColumnLabels( 0 )
{}

static const double fDefaultData[] = {
    9.10, 3.20, 4.54,
    2.40, 8.80, 9.65,
    3.10, 1.50, 3.70,
    4.30, 9.02, 6.20
};

void InternalData::createDefaultData()
{
    const sal_Int32 nRowCount = 4;
    const sal_Int32 nColumnCount = 3;

    m_nRowCount = nRowCount;
    m_nColumnCount = nColumnCount;
    const sal_Int32 nSize = nColumnCount * nRowCount;
    // @todo: localize this!
    const OUString aRowName(SchResId(STR_ROW_LABEL));
    const OUString aColName(SchResId(STR_COLUMN_LABEL));

    m_aData.resize( nSize );
    for( sal_Int32 i=0; i<nSize; ++i )
        m_aData[i] = fDefaultData[i];

    m_aRowLabels.clear();
    m_aRowLabels.reserve( m_nRowCount );
    generate_n( back_inserter( m_aRowLabels ), m_nRowCount,
        lcl_NumberedStringGenerator( aRowName, "%ROWNUMBER" ));

    m_aColumnLabels.clear();
    m_aColumnLabels.reserve( m_nColumnCount );
    generate_n( back_inserter( m_aColumnLabels ), m_nColumnCount,
        lcl_NumberedStringGenerator( aColName, "%COLUMNNUMBER" ));
}

void InternalData::setData( const Sequence< Sequence< double > >& rDataInRows )
{
    m_nRowCount = rDataInRows.getLength();
    m_nColumnCount = (m_nRowCount ? rDataInRows[0].getLength() : 0);

    if( m_aRowLabels.size() != static_cast< sal_uInt32 >( m_nRowCount ))
        m_aRowLabels.resize( m_nRowCount );
    if( m_aColumnLabels.size() != static_cast< sal_uInt32 >( m_nColumnCount ))
        m_aColumnLabels.resize( m_nColumnCount );

    m_aData.resize( m_nRowCount * m_nColumnCount );
    double fNan;
    ::rtl::math::setNan( & fNan );
    // set all values to Nan
    m_aData = fNan;

    for( sal_Int32 nRow=0; nRow<m_nRowCount; ++nRow )
    {
        int nDataIdx = nRow*m_nColumnCount;
        const sal_Int32 nMax = std::min( rDataInRows[nRow].getLength(), m_nColumnCount );
        for( sal_Int32 nCol=0; nCol < nMax; ++nCol )
        {
            m_aData[nDataIdx] = rDataInRows[nRow][nCol];
            nDataIdx += 1;
        }
    }
}

Sequence< Sequence< double > > InternalData::getData() const
{
    Sequence< Sequence< double > > aResult( m_nRowCount );

    for( sal_Int32 i=0; i<m_nRowCount; ++i )
        aResult[i] = lcl_ValarrayToSequence< tDataType::value_type >(
            m_aData[ std::slice( i*m_nColumnCount, m_nColumnCount, 1 ) ] );

    return aResult;
}

Sequence< double > InternalData::getColumnValues( sal_Int32 nColumnIndex ) const
{
    if( nColumnIndex >= 0 && nColumnIndex < m_nColumnCount )
        return lcl_ValarrayToSequence< tDataType::value_type >(
            m_aData[ std::slice( nColumnIndex, m_nRowCount, m_nColumnCount ) ] );
    return Sequence< double >();
}
Sequence< double > InternalData::getRowValues( sal_Int32 nRowIndex ) const
{
    if( nRowIndex >= 0 && nRowIndex < m_nRowCount )
        return lcl_ValarrayToSequence< tDataType::value_type >(
            m_aData[ std::slice( nRowIndex*m_nColumnCount, m_nColumnCount, 1 ) ] );
    return Sequence< double >();
}

void InternalData::setColumnValues( sal_Int32 nColumnIndex, const vector< double > & rNewData )
{
    if( nColumnIndex < 0 )
        return;
    enlargeData( nColumnIndex + 1, rNewData.size() );

    tDataType aSlice = m_aData[ std::slice( nColumnIndex, m_nRowCount, m_nColumnCount ) ];
    for( vector< double >::size_type i = 0; i < rNewData.size(); ++i )
        aSlice[i] = rNewData[i];
    m_aData[ std::slice( nColumnIndex, m_nRowCount, m_nColumnCount ) ] = aSlice;
}

void InternalData::setRowValues( sal_Int32 nRowIndex, const vector< double > & rNewData )
{
    if( nRowIndex < 0 )
        return;
    enlargeData( rNewData.size(), nRowIndex+1 );

    tDataType aSlice = m_aData[ std::slice( nRowIndex*m_nColumnCount, m_nColumnCount, 1 ) ];
    for( vector< double >::size_type i = 0; i < rNewData.size(); ++i )
        aSlice[i] = rNewData[i];
    m_aData[ std::slice( nRowIndex*m_nColumnCount, m_nColumnCount, 1 ) ]= aSlice;
}

void InternalData::setComplexColumnLabel( sal_Int32 nColumnIndex, const vector< uno::Any >& rComplexLabel )
{
    if( nColumnIndex < 0 )
        return;
    if( nColumnIndex >= static_cast< sal_Int32 >( m_aColumnLabels.size() ) )
    {
        m_aColumnLabels.resize(nColumnIndex+1);
        enlargeData( nColumnIndex+1, 0 );
    }
    m_aColumnLabels[nColumnIndex]=rComplexLabel;

    dump();
}

void InternalData::setComplexRowLabel( sal_Int32 nRowIndex, const vector< uno::Any >& rComplexLabel )
{
    if( nRowIndex < 0 )
        return;
    if( nRowIndex >= static_cast< sal_Int32 >( m_aRowLabels.size() ) )
    {
        m_aRowLabels.resize(nRowIndex+1);
        enlargeData( 0, nRowIndex+1 );
    }
    m_aRowLabels[nRowIndex] = rComplexLabel;
}

vector< uno::Any > InternalData::getComplexColumnLabel( sal_Int32 nColumnIndex ) const
{
    if( nColumnIndex < static_cast< sal_Int32 >( m_aColumnLabels.size() ) )
        return m_aColumnLabels[nColumnIndex];
    else
        return vector< uno::Any >();
}
vector< uno::Any > InternalData::getComplexRowLabel( sal_Int32 nRowIndex ) const
{
    if( nRowIndex < static_cast< sal_Int32 >( m_aRowLabels.size() ) )
        return m_aRowLabels[nRowIndex];
    else
        return vector< uno::Any >();
}

void InternalData::swapRowWithNext( sal_Int32 nRowIndex )
{
    if( nRowIndex < m_nRowCount - 1 )
    {
        const sal_Int32 nMax = m_nColumnCount;
        for( sal_Int32 nColIdx=0; nColIdx<nMax; ++nColIdx )
        {
            size_t nIndex1 = nColIdx + nRowIndex*m_nColumnCount;
            size_t nIndex2 = nIndex1 + m_nColumnCount;
            double fTemp = m_aData[nIndex1];
            m_aData[nIndex1] = m_aData[nIndex2];
            m_aData[nIndex2] = fTemp;
        }

        vector< uno::Any > aTemp( m_aRowLabels[nRowIndex] );
        m_aRowLabels[nRowIndex] = m_aRowLabels[nRowIndex + 1];
        m_aRowLabels[nRowIndex + 1] = aTemp;
    }
}

void InternalData::swapColumnWithNext( sal_Int32 nColumnIndex )
{
    if( nColumnIndex < m_nColumnCount - 1 )
    {
        const sal_Int32 nMax = m_nRowCount;
        for( sal_Int32 nRowIdx=0; nRowIdx<nMax; ++nRowIdx )
        {
            size_t nIndex1 = nColumnIndex + nRowIdx*m_nColumnCount;
            size_t nIndex2 = nIndex1 + 1;
            double fTemp = m_aData[nIndex1];
            m_aData[nIndex1] = m_aData[nIndex2];
            m_aData[nIndex2] = fTemp;
        }

        vector< uno::Any > aTemp( m_aColumnLabels[nColumnIndex] );
        m_aColumnLabels[nColumnIndex] = m_aColumnLabels[nColumnIndex + 1];
        m_aColumnLabels[nColumnIndex + 1] = aTemp;
    }
}

bool InternalData::enlargeData( sal_Int32 nColumnCount, sal_Int32 nRowCount )
{
    sal_Int32 nNewColumnCount( std::max<sal_Int32>( m_nColumnCount, nColumnCount ) );
    sal_Int32 nNewRowCount( std::max<sal_Int32>( m_nRowCount, nRowCount ) );
    sal_Int32 nNewSize( nNewColumnCount*nNewRowCount );

    bool bGrow = (nNewSize > m_nColumnCount*m_nRowCount);

    if( bGrow )
    {
        double fNan;
        ::rtl::math::setNan( &fNan );
        tDataType aNewData( fNan, nNewSize );
        // copy old data
        for( int nCol=0; nCol<m_nColumnCount; ++nCol )
            static_cast< tDataType >(
                aNewData[ std::slice( nCol, m_nRowCount, nNewColumnCount ) ] ) =
                m_aData[ std::slice( nCol, m_nRowCount, m_nColumnCount ) ];

        m_aData.resize( nNewSize );
        m_aData = aNewData;
    }
    m_nColumnCount = nNewColumnCount;
    m_nRowCount = nNewRowCount;
    return bGrow;
}

void InternalData::insertColumn( sal_Int32 nAfterIndex )
{
    // note: -1 is allowed, as we insert after the given index
    OSL_ASSERT( nAfterIndex < m_nColumnCount && nAfterIndex >= -1 );
    if( nAfterIndex >= m_nColumnCount || nAfterIndex < -1 )
        return;
    sal_Int32 nNewColumnCount = m_nColumnCount + 1;
    sal_Int32 nNewSize( nNewColumnCount * m_nRowCount );

    double fNan;
    ::rtl::math::setNan( &fNan );
    tDataType aNewData( fNan, nNewSize );

    // copy old data
    int nCol=0;
    for( ; nCol<=nAfterIndex; ++nCol )
        aNewData[ std::slice( nCol, m_nRowCount, nNewColumnCount ) ] =
            static_cast< tDataType >(
                m_aData[ std::slice( nCol, m_nRowCount, m_nColumnCount ) ] );
    for( ++nCol; nCol<nNewColumnCount; ++nCol )
        aNewData[ std::slice( nCol, m_nRowCount, nNewColumnCount ) ] =
            static_cast< tDataType >(
                m_aData[ std::slice( nCol - 1, m_nRowCount, m_nColumnCount ) ] );

    m_nColumnCount = nNewColumnCount;
    m_aData.resize( nNewSize );
    m_aData = aNewData;

    // labels
    if( nAfterIndex < static_cast< sal_Int32 >( m_aColumnLabels.size()))
        m_aColumnLabels.insert( m_aColumnLabels.begin() + (nAfterIndex + 1), vector< uno::Any >(1) );

    dump();
}

sal_Int32 InternalData::appendColumn()
{
    insertColumn( getColumnCount() - 1 );
    return getColumnCount() - 1;
}

sal_Int32 InternalData::appendRow()
{
    insertRow( getRowCount() - 1 );
    return getRowCount() - 1;
}

sal_Int32 InternalData::getRowCount() const
{
    return m_nRowCount;
}

sal_Int32 InternalData::getColumnCount() const
{
    return m_nColumnCount;
}

void InternalData::insertRow( sal_Int32 nAfterIndex )
{
    // note: -1 is allowed, as we insert after the given index
    OSL_ASSERT( nAfterIndex < m_nRowCount && nAfterIndex >= -1 );
    if( nAfterIndex >= m_nRowCount || nAfterIndex < -1 )
        return;
    sal_Int32 nNewRowCount = m_nRowCount + 1;
    sal_Int32 nNewSize( m_nColumnCount * nNewRowCount );

    double fNan;
    ::rtl::math::setNan( &fNan );
    tDataType aNewData( fNan, nNewSize );

    // copy old data
    sal_Int32 nIndex = nAfterIndex + 1;
    aNewData[ std::slice( 0, nIndex * m_nColumnCount, 1 ) ] =
        static_cast< tDataType >(
            m_aData[ std::slice( 0, nIndex * m_nColumnCount, 1 ) ] );

    if( nIndex < m_nRowCount )
    {
        sal_Int32 nRemainingCount = m_nColumnCount * (m_nRowCount - nIndex);
        aNewData[ std::slice( (nIndex + 1) * m_nColumnCount, nRemainingCount, 1 ) ] =
            static_cast< tDataType >(
                m_aData[ std::slice( nIndex * m_nColumnCount, nRemainingCount, 1 ) ] );
    }

    m_nRowCount = nNewRowCount;
    m_aData.resize( nNewSize );
    m_aData = aNewData;

    // labels
    if( nAfterIndex < static_cast< sal_Int32 >( m_aRowLabels.size()))
        m_aRowLabels.insert( m_aRowLabels.begin() + nIndex, vector< uno::Any > (1));

    dump();
}

void InternalData::deleteColumn( sal_Int32 nAtIndex )
{
    OSL_ASSERT( nAtIndex < m_nColumnCount && nAtIndex >= 0 );
    if( nAtIndex >= m_nColumnCount || m_nColumnCount < 1 || nAtIndex < 0 )
        return;
    sal_Int32 nNewColumnCount = m_nColumnCount - 1;
    sal_Int32 nNewSize( nNewColumnCount * m_nRowCount );

    double fNan;
    ::rtl::math::setNan( &fNan );
    tDataType aNewData( fNan, nNewSize );

    // copy old data
    int nCol=0;
    for( ; nCol<nAtIndex; ++nCol )
        aNewData[ std::slice( nCol, m_nRowCount, nNewColumnCount ) ] =
            static_cast< tDataType >(
                m_aData[ std::slice( nCol, m_nRowCount, m_nColumnCount ) ] );
    for( ; nCol<nNewColumnCount; ++nCol )
        aNewData[ std::slice( nCol, m_nRowCount, nNewColumnCount ) ] =
            static_cast< tDataType >(
                m_aData[ std::slice( nCol + 1, m_nRowCount, m_nColumnCount ) ] );

    m_nColumnCount = nNewColumnCount;
    m_aData.resize( nNewSize );
    m_aData = aNewData;

    // labels
    if( nAtIndex < static_cast< sal_Int32 >( m_aColumnLabels.size()))
        m_aColumnLabels.erase( m_aColumnLabels.begin() + nAtIndex );

    dump();
}

void InternalData::deleteRow( sal_Int32 nAtIndex )
{
    OSL_ASSERT( nAtIndex < m_nRowCount && nAtIndex >= 0 );
    if( nAtIndex >= m_nRowCount || m_nRowCount < 1 || nAtIndex < 0 )
        return;
    sal_Int32 nNewRowCount = m_nRowCount - 1;
    sal_Int32 nNewSize( m_nColumnCount * nNewRowCount );

    double fNan;
    ::rtl::math::setNan( &fNan );
    tDataType aNewData( fNan, nNewSize );

    // copy old data
    sal_Int32 nIndex = nAtIndex;
    if( nIndex )
        aNewData[ std::slice( 0, nIndex * m_nColumnCount, 1 ) ] =
            static_cast< tDataType >(
                m_aData[ std::slice( 0, nIndex * m_nColumnCount, 1 ) ] );

    if( nIndex < nNewRowCount )
    {
        sal_Int32 nRemainingCount = m_nColumnCount * (nNewRowCount - nIndex);
        aNewData[ std::slice( nIndex * m_nColumnCount, nRemainingCount, 1 ) ] =
            static_cast< tDataType >(
                m_aData[ std::slice( (nIndex + 1) * m_nColumnCount, nRemainingCount, 1 ) ] );
    }

    m_nRowCount = nNewRowCount;
    m_aData.resize( nNewSize );
    m_aData = aNewData;

    // labels
    if( nAtIndex < static_cast< sal_Int32 >( m_aRowLabels.size()))
        m_aRowLabels.erase( m_aRowLabels.begin() + nAtIndex );

    dump();
}

void InternalData::setComplexRowLabels( const tVecVecAny& rNewRowLabels )
{
    m_aRowLabels = rNewRowLabels;
    sal_Int32 nNewRowCount = static_cast< sal_Int32 >( m_aRowLabels.size() );
    if( nNewRowCount < m_nRowCount )
        m_aRowLabels.resize( m_nRowCount );
    else
        enlargeData( 0, nNewRowCount );
}

const InternalData::tVecVecAny& InternalData::getComplexRowLabels() const
{
    return m_aRowLabels;
}

void InternalData::setComplexColumnLabels( const tVecVecAny& rNewColumnLabels )
{
    m_aColumnLabels = rNewColumnLabels;
    sal_Int32 nNewColumnCount = static_cast< sal_Int32 >( m_aColumnLabels.size() );
    if( nNewColumnCount < m_nColumnCount )
        m_aColumnLabels.resize( m_nColumnCount );
    else
        enlargeData( nNewColumnCount, 0 );
}

const InternalData::tVecVecAny& InternalData::getComplexColumnLabels() const
{
    return m_aColumnLabels;
}

#ifdef DEBUG_INTERNAL_DATA
void InternalData::dump() const
{
    // Header
    if (!m_aColumnLabels.empty())
    {
        svl::GridPrinter aPrinter(1, m_aColumnLabels.size(), true);
        for (size_t nCol = 0; nCol < m_aColumnLabels.size(); ++nCol)
        {
            if (m_aColumnLabels[nCol].empty())
                continue;

            OUString aStr;
            if (m_aColumnLabels[nCol][0] >>= aStr)
                aPrinter.set(0, nCol, aStr);
        }
        aPrinter.print("Header");
    }

    if (!m_aRowLabels.empty())
    {
        svl::GridPrinter aPrinter(m_aRowLabels.size(), m_aRowLabels[0].size());
        for (size_t nRow = 0; nRow < m_aRowLabels.size(); ++nRow)
        {
            for (size_t nCol = 0; nCol < m_aRowLabels[nRow].size(); ++nCol)
            {
                OUString aStr;
                if (m_aRowLabels[nRow].at(nCol) >>= aStr)
                    aPrinter.set(nRow, nCol, aStr);
            }
        }
        aPrinter.print("Row labels");
    }

    svl::GridPrinter aPrinter(m_nRowCount, m_nColumnCount);

    for (sal_Int32 nRow = 0; nRow < m_nRowCount; ++nRow)
    {
        tDataType aSlice( m_aData[ std::slice( nRow*m_nColumnCount, m_nColumnCount, 1 ) ] );
        for (sal_Int32 nCol = 0; nCol < m_nColumnCount; ++nCol)
            aPrinter.set(nRow, nCol, OUString::number(aSlice[nCol]));
    }

    aPrinter.print("Column data");
}
#else
void InternalData::dump() const {}
#endif

} //  namespace chart

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