/* -*- 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 "EventOOoTContext.hxx"
#include "EventMap.hxx"
#include "MutableAttrList.hxx"
#include <xmloff/xmlnmspe.hxx>
#include "ActionMapTypesOOo.hxx"
#include "AttrTransformerAction.hxx"
#include "TransformerActions.hxx"
#include "TransformerBase.hxx"
#include <rtl/ustrbuf.hxx>
#include <osl/diagnose.h>

#include <unordered_map>

using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::xml::sax;
using namespace ::xmloff::token;

class XMLTransformerOOoEventMap_Impl:
    public std::unordered_map< OUString, NameKey_Impl >
{
public:

    void AddMap( XMLTransformerEventMapEntry *pInit );

    XMLTransformerOOoEventMap_Impl( XMLTransformerEventMapEntry *pInit,
                                       XMLTransformerEventMapEntry *pInit2  );
};

void XMLTransformerOOoEventMap_Impl::AddMap( XMLTransformerEventMapEntry *pInit )
{
    XMLTransformerOOoEventMap_Impl::key_type aKey;
    XMLTransformerOOoEventMap_Impl::mapped_type aData;
    while( pInit->m_pOOoName )
    {
        aKey = OUString::createFromAscii(pInit->m_pOOoName);

        OSL_ENSURE( find( aKey ) == end(), "duplicate event map entry" );

        aData.m_nPrefix = pInit->m_nOASISPrefix;
        aData.m_aLocalName = OUString::createFromAscii(pInit->m_pOASISName);

        XMLTransformerOOoEventMap_Impl::value_type aVal( aKey, aData );

        if( !insert( aVal ).second )
        {
            OSL_FAIL( "duplicate OOo event name entry" );
        }

        ++pInit;
    }
}

XMLTransformerOOoEventMap_Impl::XMLTransformerOOoEventMap_Impl(
        XMLTransformerEventMapEntry *pInit,
        XMLTransformerEventMapEntry *pInit2 )
{
    if( pInit )
        AddMap( pInit );
    if( pInit2 )
        AddMap( pInit2 );
}

XMLEventOOoTransformerContext::XMLEventOOoTransformerContext(
        XMLTransformerBase& rImp,
        const OUString& rQName,
        bool bPersistent ) :
    XMLPersElemContentTContext( rImp, rQName,
        rImp.GetNamespaceMap().GetKeyByAttrName( rQName ), XML_EVENT_LISTENER ),
    m_bPersistent( bPersistent )
{
}

XMLEventOOoTransformerContext::~XMLEventOOoTransformerContext()
{
}

XMLTransformerOOoEventMap_Impl
    *XMLEventOOoTransformerContext::CreateEventMap()
{
    return new XMLTransformerOOoEventMap_Impl( aTransformerEventMap,
                                                  aFormTransformerEventMap );
}

void XMLEventOOoTransformerContext::FlushEventMap(
        XMLTransformerOOoEventMap_Impl *p )
{
    delete p;
}

sal_uInt16 XMLEventOOoTransformerContext::GetEventName(
        const OUString& rName,
        OUString& rNewName,
           XMLTransformerOOoEventMap_Impl& rMap )
{
    const XMLTransformerOOoEventMap_Impl::key_type& aKey( rName );
    XMLTransformerOOoEventMap_Impl::const_iterator aIter = rMap.find( aKey );
    if( aIter == rMap.end() )
    {
        rNewName = rName;
        return XML_NAMESPACE_UNKNOWN;
    }
    else
    {
        rNewName = (*aIter).second.m_aLocalName;
        return (*aIter).second.m_nPrefix;
    }
}

void XMLEventOOoTransformerContext::StartElement(
    const Reference< XAttributeList >& rAttrList )
{
    XMLTransformerActions *pActions =
        GetTransformer().GetUserDefinedActions( OOO_EVENT_ACTIONS );
    OSL_ENSURE( pActions, "go no actions" );

    OUString aLocation, aMacroName;
    sal_Int16 nMacroName = -1;
    Reference< XAttributeList > xAttrList( rAttrList );
    XMLMutableAttributeList *pMutableAttrList = nullptr;
    sal_Int16 nAttrCount = xAttrList.is() ? xAttrList->getLength() : 0;
    for( sal_Int16 i=0; i < nAttrCount; i++ )
    {
        const OUString& rAttrName = xAttrList->getNameByIndex( i );
        OUString aLocalName;
        sal_uInt16 nPrefix =
            GetTransformer().GetNamespaceMap().GetKeyByAttrName( rAttrName,
                                                                 &aLocalName );
        XMLTransformerActions::key_type aKey( nPrefix, aLocalName );
        XMLTransformerActions::const_iterator aIter =
            pActions->find( aKey );
        if( !(aIter == pActions->end() ) )
        {
            if( !pMutableAttrList )
            {
                pMutableAttrList =
                        new XMLMutableAttributeList( xAttrList );
                xAttrList = pMutableAttrList;
            }
            const OUString& rAttrValue = xAttrList->getValueByIndex( i );
            switch( (*aIter).second.m_nActionType )
            {
            case XML_ATACTION_HREF:
                // TODO
                break;
            case XML_ATACTION_EVENT_NAME:
                pMutableAttrList->SetValueByIndex( i,
                               GetTransformer().GetEventName( rAttrValue ) );
                break;
            case XML_ATACTION_ADD_NAMESPACE_PREFIX:
                {
                    OUString aAttrValue( rAttrValue );
                    sal_uInt16 nValPrefix =
                        static_cast<sal_uInt16>((*aIter).second.m_nParam1);
                    if( GetTransformer().AddNamespacePrefix( aAttrValue,
                                                             nValPrefix ) )
                        pMutableAttrList->SetValueByIndex( i, aAttrValue );
                }
                break;
            case XML_ATACTION_MACRO_LOCATION:
                aLocation = rAttrValue;
                pMutableAttrList->RemoveAttributeByIndex( i );
                --i;
                --nAttrCount;
                break;
            case XML_ATACTION_MACRO_NAME:
                aMacroName = rAttrValue;
                nMacroName = i;
                break;
            case XML_ATACTION_COPY:
                break;
            default:
                OSL_ENSURE( false, "unknown action" );
                break;
            }
        }
    }

    if( nMacroName != -1 && !aLocation.isEmpty() )
    {
        if( !IsXMLToken( aLocation, XML_APPLICATION ) )
            aLocation = GetXMLToken( XML_DOCUMENT );
        OUStringBuffer sTmp( aLocation.getLength() + aMacroName.getLength() + 1 );
        sTmp = aLocation;
        sTmp.append( ':' );
        sTmp.append( aMacroName );
        pMutableAttrList->SetValueByIndex( nMacroName,
                                           sTmp.makeStringAndClear() );
    }

    if( m_bPersistent )
        XMLPersElemContentTContext::StartElement( xAttrList );
    else
        GetTransformer().GetDocHandler()->startElement( GetExportQName(), xAttrList );
}

void XMLEventOOoTransformerContext::EndElement()
{
    if( m_bPersistent )
        XMLPersElemContentTContext::EndElement();
    else
        GetTransformer().GetDocHandler()->endElement( GetExportQName() );
}

rtl::Reference<XMLTransformerContext> XMLEventOOoTransformerContext::CreateChildContext(
                            sal_uInt16 nPrefix,
                            const OUString& rLocalName,
                            const OUString& rQName,
                            const Reference< XAttributeList >& xAttrList )
{
    if( m_bPersistent )
        return XMLPersElemContentTContext::CreateChildContext(nPrefix, rLocalName, rQName, xAttrList);
    else
        return XMLTransformerContext::CreateChildContext(nPrefix, rLocalName, rQName, xAttrList);
}

bool XMLEventOOoTransformerContext::IsPersistent() const
{
    return m_bPersistent;
}

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