/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
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#include "file/fcode.hxx"
#include <osl/diagnose.h>
#include "connectivity/sqlparse.hxx"
#include <i18npool/mslangid.hxx>
#include <tools/debug.hxx>
#include <tools/string.hxx>
#include "TConnection.hxx"
#include <com/sun/star/sdb/SQLFilterOperator.hpp>
#include <comphelper/types.hxx>
#include <com/sun/star/sdb/SQLFilterOperator.hpp>
#include <rtl/logfile.hxx>

using namespace ::comphelper;
using namespace connectivity;
using namespace connectivity::file;
using namespace ::com::sun::star::sdbc;
using namespace ::com::sun::star::sdb;

TYPEINIT0(OCode);
TYPEINIT1(OOperand, OCode);
TYPEINIT1(OOperandRow, OOperand);
TYPEINIT1(OOperandAttr, OOperandRow);
TYPEINIT1(OOperandParam, OOperandRow);
TYPEINIT1(OOperandValue, OOperand);
TYPEINIT1(OOperandConst, OOperandValue);
TYPEINIT1(OOperandResult, OOperandValue);
TYPEINIT1(OStopOperand, OOperandValue);

TYPEINIT1(OOperator, OCode);
TYPEINIT1(OBoolOperator,OOperator);
TYPEINIT1(OOp_NOT, OBoolOperator);
TYPEINIT1(OOp_AND, OBoolOperator);
TYPEINIT1(OOp_OR, OBoolOperator);
TYPEINIT1(OOp_ISNULL, OBoolOperator);
TYPEINIT1(OOp_ISNOTNULL, OOp_ISNULL);
TYPEINIT1(OOp_LIKE, OBoolOperator);
TYPEINIT1(OOp_NOTLIKE, OOp_LIKE);
TYPEINIT1(OOp_COMPARE, OBoolOperator);
TYPEINIT1(ONumOperator, OOperator);
TYPEINIT1(ONthOperator, OOperator);
TYPEINIT1(OBinaryOperator, OOperator);
TYPEINIT1(OUnaryOperator, OOperator);

//------------------------------------------------------------------
DBG_NAME(OCode )
OCode::OCode()
{
    DBG_CTOR(OCode ,NULL);
}
// -----------------------------------------------------------------------------
OCode::~OCode()
{
    DBG_DTOR(OCode,NULL);
}

//------------------------------------------------------------------
OEvaluateSet* OOperand::preProcess(OBoolOperator* /*pOp*/, OOperand* /*pRight*/)
{
    return NULL;
}
// -----------------------------------------------------------------------------
OOperandRow::OOperandRow(sal_uInt16 _nPos, sal_Int32 _rType)
    : OOperand(_rType)
    , m_nRowPos(_nPos)
{}
//------------------------------------------------------------------
void OOperandRow::bindValue(const OValueRefRow& _pRow)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOperandRow::OOperandRow" );
    OSL_ENSURE(_pRow.is(),"NO EMPTY row allowed!");
    m_pRow = _pRow;
    OSL_ENSURE(m_pRow.is() && m_nRowPos < m_pRow->get().size(),"Invalid RowPos is >= vector.size()");
    (m_pRow->get())[m_nRowPos]->setBound(sal_True);
}
// -----------------------------------------------------------------------------
void OOperandRow::setValue(const ORowSetValue& _rVal)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOperandRow::setValue" );
    OSL_ENSURE(m_pRow.is() && m_nRowPos < m_pRow->get().size(),"Invalid RowPos is >= vector.size()");
    (*(m_pRow->get())[m_nRowPos]) = _rVal;
}
//------------------------------------------------------------------
const ORowSetValue& OOperandRow::getValue() const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOperandRow::getValue" );
    OSL_ENSURE(m_pRow.is() && m_nRowPos < m_pRow->get().size(),"Invalid RowPos is >= vector.size()");
    return (m_pRow->get())[m_nRowPos]->getValue();
}

// -----------------------------------------------------------------------------
void OOperandValue::setValue(const ORowSetValue& _rVal)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOperandValue::setValue" );
    m_aValue = _rVal;
}
// -------------------------------------------------------------------------
sal_Bool OOperandAttr::isIndexed() const
{
    return sal_False;
}
//------------------------------------------------------------------
OOperandParam::OOperandParam(OSQLParseNode* pNode, sal_Int32 _nPos)
    : OOperandRow(static_cast<sal_uInt16>(_nPos), DataType::VARCHAR)         // Standard-Type
{
    OSL_ENSURE(SQL_ISRULE(pNode,parameter),"Argument ist kein Parameter");
    OSL_ENSURE(pNode->count() > 0,"Fehler im Parse Tree");
    OSQLParseNode *pMark = pNode->getChild(0);

    String aParameterName;
    if (SQL_ISPUNCTUATION(pMark,"?"))
        aParameterName = '?';
    else if (SQL_ISPUNCTUATION(pMark,":"))
        aParameterName = pNode->getChild(1)->getTokenValue();
    else
    {
        OSL_FAIL("Fehler im Parse Tree");
    }

    // set up Parameter-Column with default type, can be specified more precisely later using Describe-Parameter

    // save Identity (not escpecially necessary here, just for the sake of symmetry)

    // todo
    //  OColumn* pColumn = new OFILEColumn(aParameterName,eDBType,255,0,SQL_FLAGS_NULLALLOWED);
    //  rParamColumns->AddColumn(pColumn);

    // the value will be set just before the evaluation
}


//------------------------------------------------------------------
const ORowSetValue& OOperandValue::getValue() const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOperandValue::getValue" );
    return m_aValue;
}

//------------------------------------------------------------------
OOperandConst::OOperandConst(const OSQLParseNode& rColumnRef, const rtl::OUString& aStrValue)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOperandConst::OOperandConst" );
    switch (rColumnRef.getNodeType())
    {
        case SQL_NODE_STRING:
            m_aValue    = aStrValue;
            m_eDBType   = DataType::VARCHAR;
            m_aValue.setBound(sal_True);
            return;
        case SQL_NODE_INTNUM:
        case SQL_NODE_APPROXNUM:
        {
            m_aValue    = aStrValue.toDouble();
            m_eDBType   = DataType::DOUBLE;
            m_aValue.setBound(sal_True);
            return;
        }
        default:
            break;
    }

    if (SQL_ISTOKEN(&rColumnRef,TRUE))
    {
        m_aValue = 1.0;
        m_eDBType = DataType::BIT;
    }
    else if (SQL_ISTOKEN(&rColumnRef,FALSE))
    {
        m_aValue = 0.0;
        m_eDBType = DataType::BIT;
    }
    else
    {
        OSL_FAIL("Parse Error");
    }
    m_aValue.setBound(sal_True);
}

/////////////////////////////////////////////////////////////////////////////////////////
// Implementation of the operators

//------------------------------------------------------------------
sal_uInt16 OOperator::getRequestedOperands() const {return 2;}

//------------------------------------------------------------------
sal_Bool OBoolOperator::operate(const OOperand*, const OOperand*) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OBoolOperator::operate" );
    return sal_False;
}


//------------------------------------------------------------------
void OBoolOperator::Exec(OCodeStack& rCodeStack)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OBoolOperator::Exec" );
    OOperand  *pRight   = rCodeStack.top();
    rCodeStack.pop();
    OOperand  *pLeft    = rCodeStack.top();
    rCodeStack.pop();

    rCodeStack.push(new OOperandResultBOOL(operate(pLeft, pRight)));
    if (IS_TYPE(OOperandResult,pLeft))
        delete pLeft;
    if (IS_TYPE(OOperandResult,pRight))
        delete pRight;
}
//------------------------------------------------------------------
sal_Bool OOp_NOT::operate(const OOperand* pLeft, const OOperand* ) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_AND::operate" );
    return !pLeft->isValid();
}
//------------------------------------------------------------------
void OOp_NOT::Exec(OCodeStack& rCodeStack)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_ISNULL::Exec" );
    OOperand* pOperand = rCodeStack.top();
    rCodeStack.pop();

    rCodeStack.push(new OOperandResultBOOL(operate(pOperand)));
    if (IS_TYPE(OOperandResult,pOperand))
        delete pOperand;
}
//------------------------------------------------------------------
sal_uInt16 OOp_NOT::getRequestedOperands() const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_NOT::getRequestedOperands" );
    return 1;
}

//------------------------------------------------------------------
sal_Bool OOp_AND::operate(const OOperand* pLeft, const OOperand* pRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_AND::operate" );
    return pLeft->isValid() && pRight->isValid();
}

//------------------------------------------------------------------
sal_Bool OOp_OR::operate(const OOperand* pLeft, const OOperand* pRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_OR::operate" );
    return pLeft->isValid() || pRight->isValid();
}

//------------------------------------------------------------------
sal_uInt16 OOp_ISNULL::getRequestedOperands() const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_ISNULL::getRequestedOperands" );
    return 1;
}

//------------------------------------------------------------------
void OOp_ISNULL::Exec(OCodeStack& rCodeStack)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_ISNULL::Exec" );
    OOperand* pOperand = rCodeStack.top();
    rCodeStack.pop();

    rCodeStack.push(new OOperandResultBOOL(operate(pOperand)));
    if (IS_TYPE(OOperandResult,pOperand))
        delete pOperand;
}

//------------------------------------------------------------------
sal_Bool OOp_ISNULL::operate(const OOperand* pOperand, const OOperand*) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_ISNULL::operate" );
    return pOperand->getValue().isNull();
}

//------------------------------------------------------------------
sal_Bool OOp_ISNOTNULL::operate(const OOperand* pOperand, const OOperand*) const
{
    return !OOp_ISNULL::operate(pOperand);
}

//------------------------------------------------------------------
sal_Bool OOp_LIKE::operate(const OOperand* pLeft, const OOperand* pRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_ISNULL::operate" );
    sal_Bool bMatch;
    ORowSetValue aLH(pLeft->getValue());
    ORowSetValue aRH(pRight->getValue());

    if (aLH.isNull() || aRH.isNull())
        bMatch = sal_False;
    else
    {
        bMatch = match(aRH.getString(), aLH.getString(), cEscape);
    }
    return bMatch;
}

//------------------------------------------------------------------
sal_Bool OOp_NOTLIKE::operate(const OOperand* pLeft, const OOperand* pRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_NOTLIKE::operate" );
    return !OOp_LIKE::operate(pLeft, pRight);
}

//------------------------------------------------------------------
sal_Bool OOp_COMPARE::operate(const OOperand* pLeft, const OOperand* pRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_COMPARE::operate" );
    ORowSetValue aLH(pLeft->getValue());
    ORowSetValue aRH(pRight->getValue());

    if (aLH.isNull() || aRH.isNull()) // if (!aLH.getValue() || !aRH.getValue())
        return sal_False;

    sal_Bool bResult = sal_False;
    sal_Int32 eDBType = pLeft->getDBType();

    // Comparison (depending on Data-type):
    switch (eDBType)
    {
        case DataType::CHAR:
        case DataType::VARCHAR:
        case DataType::LONGVARCHAR:
        {
            rtl::OUString sLH = aLH, sRH = aRH;
            sal_Int32 nRes = rtl_ustr_compareIgnoreAsciiCase_WithLength
                (
                 sLH.pData->buffer,
                 sLH.pData->length,
                 sRH.pData->buffer,
                 sRH.pData->length );
            switch(aPredicateType)
            {
                case SQLFilterOperator::EQUAL:          bResult = (nRes == 0); break;
                case SQLFilterOperator::NOT_EQUAL:          bResult = (nRes != 0); break;
                case SQLFilterOperator::LESS:               bResult = (nRes <  0); break;
                case SQLFilterOperator::LESS_EQUAL:     bResult = (nRes <= 0); break;
                case SQLFilterOperator::GREATER:            bResult = (nRes >  0); break;
                case SQLFilterOperator::GREATER_EQUAL:  bResult = (nRes >= 0); break;
                default:                        bResult = sal_False;
            }
        } break;
        case DataType::TINYINT:
        case DataType::SMALLINT:
        case DataType::INTEGER:
        case DataType::DECIMAL:
        case DataType::NUMERIC:
        case DataType::REAL:
        case DataType::DOUBLE:
        case DataType::BIT:
        case DataType::TIMESTAMP:
        case DataType::DATE:
        case DataType::TIME:
        {
            double n = aLH ,m = aRH;

            switch (aPredicateType)
            {
                case SQLFilterOperator::EQUAL:          bResult = (n == m); break;
                case SQLFilterOperator::LIKE:               bResult = (n == m); break;
                case SQLFilterOperator::NOT_EQUAL:          bResult = (n != m); break;
                case SQLFilterOperator::NOT_LIKE:           bResult = (n != m); break;
                case SQLFilterOperator::LESS:               bResult = (n < m); break;
                case SQLFilterOperator::LESS_EQUAL:     bResult = (n <= m); break;
                case SQLFilterOperator::GREATER:            bResult = (n > m); break;
                case SQLFilterOperator::GREATER_EQUAL:  bResult = (n >= m); break;
                default:                        bResult = sal_False;
            }
        } break;
        default:
            bResult = aLH == aRH;
    }
    return bResult;
}

//------------------------------------------------------------------
void ONumOperator::Exec(OCodeStack& rCodeStack)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "ONumOperator::Exec" );

    OOperand  *pRight   = rCodeStack.top();
    rCodeStack.pop();
    OOperand  *pLeft    = rCodeStack.top();
    rCodeStack.pop();

    rCodeStack.push(new OOperandResultNUM(operate(pLeft->getValue(), pRight->getValue())));
    if (IS_TYPE(OOperandResult,pLeft))
        delete pLeft;
    if (IS_TYPE(OOperandResult,pRight))
        delete pRight;
}
//------------------------------------------------------------------
double OOp_ADD::operate(const double& fLeft,const double& fRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_ADD::operate" );
    return fLeft + fRight;
}

//------------------------------------------------------------------
double OOp_SUB::operate(const double& fLeft,const double& fRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_SUB::operate" );
    return fLeft - fRight;
}

//------------------------------------------------------------------
double OOp_MUL::operate(const double& fLeft,const double& fRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_MUL::operate" );
    return fLeft * fRight;
}

//------------------------------------------------------------------
double OOp_DIV::operate(const double& fLeft,const double& fRight) const
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOp_DIV::operate" );
    return fLeft / fRight;
}
// -----------------------------------------------------------------------------
OEvaluateSet* OOperandAttr::preProcess(OBoolOperator* /*pOp*/, OOperand* /*pRight*/)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OOperandAttr::preProcess" );
    return NULL;
}
//------------------------------------------------------------------
void ONthOperator::Exec(OCodeStack& rCodeStack)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "ONthOperator::Exec" );
    ::std::vector<ORowSetValue> aValues;
    ::std::vector<OOperand*> aOperands;
    OOperand* pOperand;
    do
    {
        OSL_ENSURE(!rCodeStack.empty(),"Stack must be none empty!");
        pOperand    = rCodeStack.top();
        rCodeStack.pop();
        if ( !IS_TYPE(OStopOperand,pOperand) )
            aValues.push_back( pOperand->getValue() );
        aOperands.push_back( pOperand );
    }
    while ( !IS_TYPE(OStopOperand,pOperand) );

    rCodeStack.push(new OOperandResult(operate(aValues)));

    ::std::vector<OOperand*>::iterator aIter = aOperands.begin();
    ::std::vector<OOperand*>::iterator aEnd = aOperands.end();
    for (; aIter != aEnd; ++aIter)
    {
        if (IS_TYPE(OOperandResult,*aIter))
            delete *aIter;
    }
}
//------------------------------------------------------------------
void OBinaryOperator::Exec(OCodeStack& rCodeStack)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OBinaryOperator::Exec" );
    OOperand  *pRight   = rCodeStack.top();
    rCodeStack.pop();
    OOperand  *pLeft    = rCodeStack.top();
    rCodeStack.pop();

    if ( !rCodeStack.empty() && IS_TYPE(OStopOperand,rCodeStack.top()) )
        rCodeStack.pop();

    rCodeStack.push(new OOperandResult(operate(pLeft->getValue(),pRight->getValue())));
    if (IS_TYPE(OOperandResult,pRight))
        delete pRight;
    if (IS_TYPE(OOperandResult,pLeft))
        delete pLeft;
}
//------------------------------------------------------------------
void OUnaryOperator::Exec(OCodeStack& rCodeStack)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "file", "Ocke.Janssen@sun.com", "OUnaryOperator::Exec" );
    OSL_ENSURE(!rCodeStack.empty(),"Stack is empty!");
    OOperand* pOperand = rCodeStack.top();
    rCodeStack.pop();

    rCodeStack.push(new OOperandResult(operate(pOperand->getValue())));
    if (IS_TYPE(OOperandResult,pOperand))
        delete pOperand;
}
// -----------------------------------------------------------------------------
sal_uInt16 OUnaryOperator::getRequestedOperands() const {return 1;}



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