/* -*- 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 <com/sun/star/beans/StringPair.hpp>

#include <com/sun/star/xml/sax/Parser.hpp>

#include <com/sun/star/xml/sax/SAXException.hpp>

#include <com/sun/star/xml/sax/Writer.hpp>

#include <com/sun/star/xml/sax/XDocumentHandler.hpp>

#include <comphelper/attributelist.hxx>

#include <rtl/ref.hxx>

#include "doctemplateslocal.hxx"

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

namespace

{

// Relations info related strings

constexpr OUString g_sGroupListElement(u"groupuinames:template-group-list"_ustr);

constexpr OUString g_sGroupElement(u"groupuinames:template-group"_ustr);

constexpr OUString g_sNameAttr(u"groupuinames:name"_ustr);

constexpr OUString g_sUINameAttr(u"groupuinames:default-ui-name"_ustr);

}

std::vector< beans::StringPair > DocTemplLocaleHelper::ReadGroupLocalizationSequence( const uno::Reference< io::XInputStream >& xInStream, const uno::Reference< uno::XComponentContext >& xContext )

{

    return ReadLocalizationSequence_Impl( xInStream, u"groupuinames.xml"_ustr, xContext );

}

void DocTemplLocaleHelper::WriteGroupLocalizationSequence( const uno::Reference< io::XOutputStream >& xOutStream, const std::vector< beans::StringPair >& aSequence, const uno::Reference< uno::XComponentContext >& xContext )

{

    if ( !xOutStream.is() )

        throw uno::RuntimeException();

    uno::Reference< xml::sax::XWriter > xWriterHandler(

        xml::sax::Writer::create(xContext) );

    xWriterHandler->setOutputStream( xOutStream );

    static constexpr OUString aWhiteSpace( u" "_ustr );

    // write the namespace

    rtl::Reference<::comphelper::AttributeList> pRootAttrList = new ::comphelper::AttributeList;

    pRootAttrList->AddAttribute(

        u"xmlns:groupuinames"_ustr,

        u"http://openoffice.org/2006/groupuinames"_ustr );

    xWriterHandler->startDocument();

    xWriterHandler->startElement( g_sGroupListElement, pRootAttrList );

    for (const auto & i : aSequence)

    {

        rtl::Reference<::comphelper::AttributeList> pAttrList = new ::comphelper::AttributeList;

        pAttrList->AddAttribute( g_sNameAttr, i.First );

        pAttrList->AddAttribute( g_sUINameAttr, i.Second );

        xWriterHandler->startElement( g_sGroupElement, pAttrList );

        xWriterHandler->ignorableWhitespace( aWhiteSpace );

        xWriterHandler->endElement( g_sGroupElement );

    }

    xWriterHandler->ignorableWhitespace( aWhiteSpace );

    xWriterHandler->endElement( g_sGroupListElement );

    xWriterHandler->endDocument();

}

std::vector< beans::StringPair > DocTemplLocaleHelper::ReadLocalizationSequence_Impl( const uno::Reference< io::XInputStream >& xInStream, const OUString& aStringID, const uno::Reference< uno::XComponentContext >& xContext )

{

    if ( !xContext.is() || !xInStream.is() )

        throw uno::RuntimeException();

    uno::Reference< xml::sax::XParser > xParser = xml::sax::Parser::create( xContext );

    rtl::Reference<DocTemplLocaleHelper> pHelper = new DocTemplLocaleHelper();

    xml::sax::InputSource aParserInput;

    aParserInput.aInputStream = xInStream;

    aParserInput.sSystemId = aStringID;

    xParser->setDocumentHandler( pHelper );

    xParser->parseStream( aParserInput );

    xParser->setDocumentHandler( uno::Reference < xml::sax::XDocumentHandler > () );

    return pHelper->GetParsingResult();

}

DocTemplLocaleHelper::DocTemplLocaleHelper()

{

}

DocTemplLocaleHelper::~DocTemplLocaleHelper()

{

}

std::vector< beans::StringPair > const & DocTemplLocaleHelper::GetParsingResult() const

{

    if ( !m_aElementsSeq.empty() )

        throw uno::RuntimeException(u"The parsing has still not finished!"_ustr);

    return m_aResultSeq;

}

void SAL_CALL DocTemplLocaleHelper::startDocument()

{

}

void SAL_CALL DocTemplLocaleHelper::endDocument()

{

}

void SAL_CALL DocTemplLocaleHelper::startElement( const OUString& aName, const uno::Reference< xml::sax::XAttributeList >& xAttribs )

{

    if ( aName == g_sGroupListElement )

    {

        if ( !m_aElementsSeq.empty() )

            throw xml::sax::SAXException(); // TODO: this element must be the first level element

        m_aElementsSeq.push_back( aName );

        return; // nothing to do

    }

    else if ( aName == g_sGroupElement )

    {

        if ( m_aElementsSeq.size() != 1 )

            throw xml::sax::SAXException(); // TODO: this element must be the second level element

        m_aElementsSeq.push_back( aName );

        const auto nNewEntryNum = m_aResultSeq.size();

        m_aResultSeq.resize( nNewEntryNum+1 );

        const OUString aNameValue = xAttribs->getValueByName( g_sNameAttr );

        if ( aNameValue.isEmpty() )

            throw xml::sax::SAXException(); // TODO: the ID value must present

        const OUString aUINameValue = xAttribs->getValueByName( g_sUINameAttr );

        if ( aUINameValue.isEmpty() )

            throw xml::sax::SAXException(); // TODO: the ID value must present

        m_aResultSeq[nNewEntryNum].First = aNameValue;

        m_aResultSeq[nNewEntryNum].Second = aUINameValue;

    }

    else

    {

        // accept future extensions

        if ( m_aElementsSeq.empty() )

            throw xml::sax::SAXException(); // TODO: the extension element must not be the first level element

        m_aElementsSeq.push_back( aName );

    }

}

void SAL_CALL DocTemplLocaleHelper::endElement( const OUString& aName )

{

    if ( m_aElementsSeq.empty() )

        throw xml::sax::SAXException(); // TODO: no other end elements expected!

    if ( m_aElementsSeq.back() != aName )

        throw xml::sax::SAXException(); // TODO: unexpected element ended

    m_aElementsSeq.pop_back();

}

void SAL_CALL DocTemplLocaleHelper::characters( const OUString& /*aChars*/ )

{

}

void SAL_CALL DocTemplLocaleHelper::ignorableWhitespace( const OUString& /*aWhitespaces*/ )

{

}

void SAL_CALL DocTemplLocaleHelper::processingInstruction( const OUString& /*aTarget*/, const OUString& /*aData*/ )

{

}

void SAL_CALL DocTemplLocaleHelper::setDocumentLocator( const uno::Reference< xml::sax::XLocator >& /*xLocator*/ )

{

}

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