/* -*- 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 <connectivity/TIndexes.hxx>

#include <TIndex.hxx>

#include <connectivity/TTableHelper.hxx>

#include <com/sun/star/sdb/tools/XIndexAlteration.hpp>

#include <com/sun/star/sdbc/XRow.hpp>

#include <com/sun/star/sdbc/XResultSet.hpp>

#include <com/sun/star/sdbc/IndexType.hpp>

#include <com/sun/star/sdbc/SQLException.hpp>

#include <connectivity/dbtools.hxx>

#include <TConnection.hxx>

#include <comphelper/extract.hxx>

#include <comphelper/types.hxx>

#include <rtl/ustrbuf.hxx>

using namespace connectivity;

using namespace connectivity::sdbcx;

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

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

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

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

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

using namespace cppu;

OIndexesHelper::OIndexesHelper(OTableHelper* _pTable,

                 ::osl::Mutex& _rMutex,

             const std::vector< OUString> &_rVector

             )

    : OCollection(*_pTable,true,_rMutex,_rVector)

    ,m_pTable(_pTable)

{

}

css::uno::Reference< css::beans::XPropertySet > OIndexesHelper::createObject(const OUString& _rName)

{

    Reference< XConnection> xConnection = m_pTable->getConnection();

    if ( !xConnection.is() )

        return nullptr;

    rtl::Reference< OIndexHelper > xRet;

    OUString aName,aQualifier;

    sal_Int32 nLen = _rName.indexOf('.');

    if ( nLen != -1 )

    {

        aQualifier  = _rName.copy(0,nLen);

        aName       = _rName.copy(nLen+1);

    }

    else

        aName       = _rName;

    ::dbtools::OPropertyMap& rPropMap = OMetaConnection::getPropMap();

    OUString aSchema,aTable;

    m_pTable->getPropertyValue(rPropMap.getNameByIndex(PROPERTY_ID_SCHEMANAME)) >>= aSchema;

    m_pTable->getPropertyValue(rPropMap.getNameByIndex(PROPERTY_ID_NAME))       >>= aTable;

    Any aCatalog = m_pTable->getPropertyValue(rPropMap.getNameByIndex(PROPERTY_ID_CATALOGNAME));

    Reference< XResultSet > xResult = m_pTable->getMetaData()->getIndexInfo(aCatalog,aSchema,aTable,false,false);

    if ( xResult.is() )

    {

        Reference< XRow > xRow(xResult,UNO_QUERY);

        while( xResult->next() )

        {

            bool bUnique = !xRow->getBoolean(4);

            if((aQualifier.isEmpty() || xRow->getString(5) == aQualifier ) && xRow->getString(6) == aName)

            {

                sal_Int32 nClustered = xRow->getShort(7);

                bool bPrimarKeyIndex = false;

                xRow.clear();

                xResult.clear();

                try

                {

                    xResult = m_pTable->getMetaData()->getPrimaryKeys(aCatalog,aSchema,aTable);

                    xRow.set(xResult,UNO_QUERY);

                    if ( xRow.is() && xResult->next() ) // there can be only one primary key

                    {

                        bPrimarKeyIndex = xRow->getString(6) == aName;

                    }

                }

                catch(const Exception&)

                {

                }

                xRet = new OIndexHelper(m_pTable,aName,aQualifier,bUnique,

                    bPrimarKeyIndex,

                    nClustered == IndexType::CLUSTERED);

                break;

            }

        }

    }

    return xRet;

}

void OIndexesHelper::impl_refresh()

{

    m_pTable->refreshIndexes();

}

Reference< XPropertySet > OIndexesHelper::createDescriptor()

{

    return new OIndexHelper(m_pTable);

}

// XAppend

css::uno::Reference< css::beans::XPropertySet > OIndexesHelper::appendObject( const OUString& _rForName, const Reference< XPropertySet >& descriptor )

{

    Reference< XConnection> xConnection = m_pTable->getConnection();

    if ( !xConnection.is() )

        return nullptr;

    if ( m_pTable->isNew() )

        return cloneDescriptor( descriptor );

    if ( m_pTable->getIndexService().is() )

    {

        m_pTable->getIndexService()->addIndex(m_pTable,descriptor);

    }

    else

    {

        ::dbtools::OPropertyMap& rPropMap = OMetaConnection::getPropMap();

        OUStringBuffer aSql( "CREATE " );

        OUString aQuote  = m_pTable->getMetaData()->getIdentifierQuoteString(  );

        if(comphelper::getBOOL(descriptor->getPropertyValue(rPropMap.getNameByIndex(PROPERTY_ID_ISUNIQUE))))

            aSql.append("UNIQUE ");

        aSql.append("INDEX ");

        OUString aCatalog,aSchema,aTable;

        dbtools::qualifiedNameComponents(m_pTable->getMetaData(),m_pTable->getName(),aCatalog,aSchema,aTable,::dbtools::EComposeRule::InDataManipulation);

        OUString aComposedName = dbtools::composeTableName(m_pTable->getMetaData(),aCatalog,aSchema,aTable, true, ::dbtools::EComposeRule::InIndexDefinitions);

        if (!_rForName.isEmpty() )

        {

            aSql.append( ::dbtools::quoteName( aQuote, _rForName )

                + " ON "

                + aComposedName

                + " ( ");

            Reference<XColumnsSupplier> xColumnSup(descriptor,UNO_QUERY);

            Reference<XIndexAccess> xColumns(xColumnSup->getColumns(),UNO_QUERY);

            Reference< XPropertySet > xColProp;

            bool bAddIndexAppendix = ::dbtools::getBooleanDataSourceSetting( m_pTable->getConnection(), "AddIndexAppendix" );

            sal_Int32 nCount = xColumns->getCount();

            for(sal_Int32 i = 0 ; i < nCount; ++i)

            {

                xColProp.set(xColumns->getByIndex(i),UNO_QUERY);

                aSql.append(::dbtools::quoteName( aQuote,comphelper::getString(xColProp->getPropertyValue(rPropMap.getNameByIndex(PROPERTY_ID_NAME)))));

                if ( bAddIndexAppendix )

                {

                    aSql.appendAscii(any2bool(xColProp->getPropertyValue(rPropMap.getNameByIndex(PROPERTY_ID_ISASCENDING)))

                                                ?

                                    " ASC"

                                                :

                                    " DESC");

                }

                aSql.append(",");

            }

            aSql[aSql.getLength() - 1] = ')';

        }

        else

        {

            aSql.append(aComposedName);

            Reference<XColumnsSupplier> xColumnSup(descriptor,UNO_QUERY);

            Reference<XIndexAccess> xColumns(xColumnSup->getColumns(),UNO_QUERY);

            Reference< XPropertySet > xColProp;

            if(xColumns->getCount() != 1)

                throw SQLException();

            xColumns->getByIndex(0) >>= xColProp;

            aSql.append("."

                + ::dbtools::quoteName( aQuote,comphelper::getString(xColProp->getPropertyValue(rPropMap.getNameByIndex(PROPERTY_ID_NAME)))));

        }

        Reference< XStatement > xStmt = m_pTable->getConnection()->createStatement(  );

        if ( xStmt.is() )

        {

            OUString sSql = aSql.makeStringAndClear();

            xStmt->execute(sSql);

            ::comphelper::disposeComponent(xStmt);

        }

    }

    return createObject( _rForName );

}

// XDrop

void OIndexesHelper::dropObject(sal_Int32 /*_nPos*/,const OUString& _sElementName)

{

    Reference< XConnection> xConnection = m_pTable->getConnection();

    if( !xConnection.is() || m_pTable->isNew() )

        return;

    if ( m_pTable->getIndexService().is() )

    {

        m_pTable->getIndexService()->dropIndex(m_pTable,_sElementName);

    }

    else

    {

        OUString aName,aSchema;

        sal_Int32 nLen = _sElementName.indexOf('.');

        if(nLen != -1)

            aSchema = _sElementName.copy(0,nLen);

        aName   = _sElementName.copy(nLen+1);

        OUString aSql( u"DROP INDEX "_ustr );

        OUString aComposedName = dbtools::composeTableName( m_pTable->getMetaData(), m_pTable, ::dbtools::EComposeRule::InIndexDefinitions, true );

        OUString sIndexName = dbtools::composeTableName( m_pTable->getMetaData(), OUString(), aSchema, aName, true, ::dbtools::EComposeRule::InIndexDefinitions );

        aSql += sIndexName + " ON " + aComposedName;

        Reference< XStatement > xStmt = m_pTable->getConnection()->createStatement(  );

        if ( xStmt.is() )

        {

            xStmt->execute(aSql);

            ::comphelper::disposeComponent(xStmt);

        }

    }

}

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