/* -*- 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 <memory>

#include <com/sun/star/document/XExporter.hpp>
#include <com/sun/star/document/XFilter.hpp>
#include <com/sun/star/document/XImporter.hpp>
#include <com/sun/star/io/WrongFormatException.hpp>
#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <cppuhelper/exc_hlp.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <osl/file.hxx>
#include <sal/log.hxx>
#include <unotools/mediadescriptor.hxx>
#include <unotools/streamwrap.hxx>
#include <unotools/ucbstreamhelper.hxx>

#include <dmapper/DomainMapperFactory.hxx>
#include <rtftok/RTFDocument.hxx>

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

/// Invokes the RTF tokenizer + dmapper or RtfExportFilter in sw via UNO.
class RtfFilter : public cppu::WeakImplHelper
    <
    document::XFilter,
    document::XImporter,
    document::XExporter,
    lang::XInitialization,
    lang::XServiceInfo
    >
{
    uno::Reference<uno::XComponentContext> m_xContext;
    uno::Reference<lang::XComponent> m_xSrcDoc, m_xDstDoc;

public:
    explicit RtfFilter(uno::Reference<uno::XComponentContext> xContext);

    // XFilter
    sal_Bool SAL_CALL filter(const uno::Sequence<beans::PropertyValue>& rDescriptor) override;
    void SAL_CALL cancel() override;

    // XImporter
    void SAL_CALL setTargetDocument(const uno::Reference<lang::XComponent>& xDoc) override;

    // XExporter
    void SAL_CALL setSourceDocument(const uno::Reference<lang::XComponent>& xDoc) override;

    // XInitialization
    void SAL_CALL initialize(const uno::Sequence<uno::Any>& rArguments) override;

    // XServiceInfo
    OUString SAL_CALL getImplementationName() override;
    sal_Bool SAL_CALL supportsService(const OUString& rServiceName) override;
    uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;

};

RtfFilter::RtfFilter(uno::Reference<uno::XComponentContext> xContext)
    : m_xContext(std::move(xContext))
{
}

sal_Bool RtfFilter::filter(const uno::Sequence< beans::PropertyValue >& rDescriptor)
{
    sal_uInt32 nStartTime = osl_getGlobalTimer();
    if (m_xSrcDoc.is())
    {
        uno::Reference< lang::XMultiServiceFactory > xMSF(m_xContext->getServiceManager(), uno::UNO_QUERY_THROW);
        uno::Reference< uno::XInterface > xIfc(xMSF->createInstance("com.sun.star.comp.Writer.RtfExport"), uno::UNO_QUERY_THROW);
        uno::Reference< document::XExporter > xExporter(xIfc, uno::UNO_QUERY_THROW);
        uno::Reference< document::XFilter > xFilter(xIfc, uno::UNO_QUERY_THROW);
        xExporter->setSourceDocument(m_xSrcDoc);
        return xFilter->filter(rDescriptor);
    }

    bool bResult(false);
    uno::Reference<task::XStatusIndicator> xStatusIndicator;

    try
    {
        utl::MediaDescriptor aMediaDesc(rDescriptor);
        bool bRepairStorage = aMediaDesc.getUnpackedValueOrDefault("RepairPackage", false);
        bool bIsNewDoc = !aMediaDesc.getUnpackedValueOrDefault("InsertMode", false);
        uno::Reference< io::XInputStream > xInputStream;

        aMediaDesc.addInputStream();
        aMediaDesc[ utl::MediaDescriptor::PROP_INPUTSTREAM() ] >>= xInputStream;

        // If this is set, write to this file, instead of the real document during paste.
        char* pEnv = getenv("SW_DEBUG_RTF_PASTE_TO");
        OUString aOutStr;
        if (!bIsNewDoc && pEnv && osl::FileBase::getFileURLFromSystemPath(OUString::fromUtf8(pEnv), aOutStr) == osl::FileBase::E_None)
        {
            std::unique_ptr<SvStream> pOut(utl::UcbStreamHelper::CreateStream(aOutStr, StreamMode::WRITE));
            std::unique_ptr<SvStream> pIn(utl::UcbStreamHelper::CreateStream(xInputStream));
            pOut->WriteStream(*pIn);
            return true;
        }

        // If this is set, read from this file, instead of the real clipboard during paste.
        pEnv = getenv("SW_DEBUG_RTF_PASTE_FROM");
        if (!bIsNewDoc && pEnv)
        {
            OUString aInStr;
            osl::FileBase::getFileURLFromSystemPath(OUString::fromUtf8(pEnv), aInStr);
            std::unique_ptr<SvStream> pStream = utl::UcbStreamHelper::CreateStream(aInStr, StreamMode::READ);
            uno::Reference<io::XStream> xStream(new utl::OStreamWrapper(std::move(pStream)));
            xInputStream.set(xStream, uno::UNO_QUERY);
        }

        uno::Reference<frame::XFrame> xFrame = aMediaDesc.getUnpackedValueOrDefault(utl::MediaDescriptor::PROP_FRAME(),
                                               uno::Reference<frame::XFrame>());

        xStatusIndicator = aMediaDesc.getUnpackedValueOrDefault(utl::MediaDescriptor::PROP_STATUSINDICATOR(),
                           uno::Reference<task::XStatusIndicator>());

        writerfilter::Stream::Pointer_t pStream(
            writerfilter::dmapper::DomainMapperFactory::createMapper(
                m_xContext, xInputStream, m_xDstDoc, bRepairStorage,
                writerfilter::dmapper::SourceDocumentType::RTF, aMediaDesc));
        writerfilter::rtftok::RTFDocument::Pointer_t pDocument(
            writerfilter::rtftok::RTFDocumentFactory::createDocument(m_xContext, xInputStream, m_xDstDoc, xFrame, xStatusIndicator, aMediaDesc));
        pDocument->resolve(*pStream);
        bResult = true;
        sal_uInt32 nEndTime = osl_getGlobalTimer();
        SAL_INFO("writerfilter.profile", "RtfFilter::filter: finished in " << nEndTime - nStartTime << " ms");
    }
    catch (const io::WrongFormatException&)
    {
        css::uno::Any anyEx = cppu::getCaughtException();
        // cannot throw WrongFormatException directly :(
        throw lang::WrappedTargetRuntimeException("",
                static_cast<OWeakObject*>(this), anyEx);
    }
    catch (const uno::Exception& e)
    {
        SAL_INFO("writerfilter", "Exception caught: " << e);
    }

    if (xStatusIndicator.is())
        xStatusIndicator->end();
    return bResult;
}

void RtfFilter::cancel()
{
}

void RtfFilter::setSourceDocument(const uno::Reference< lang::XComponent >& xDoc)
{
    m_xSrcDoc = xDoc;
}

void RtfFilter::setTargetDocument(const uno::Reference< lang::XComponent >& xDoc)
{
    m_xDstDoc = xDoc;
}

void RtfFilter::initialize(const uno::Sequence< uno::Any >& /*aArguments*/)
{
    // The DOCX exporter here extracts 'type' of the filter, ie 'Word' or
    // 'Word Template' but we don't need it for RTF.
}

OUString RtfFilter::getImplementationName()
{
    return OUString("com.sun.star.comp.Writer.RtfFilter");
}

sal_Bool RtfFilter::supportsService(const OUString& rServiceName)
{
    return cppu::supportsService(this, rServiceName);
}

uno::Sequence<OUString> RtfFilter::getSupportedServiceNames()
{
    uno::Sequence<OUString> aRet =
    {
        OUString("com.sun.star.document.ImportFilter"),
        OUString("com.sun.star.document.ExportFilter")
    };
    return aRet;
}

extern "C" SAL_DLLPUBLIC_EXPORT uno::XInterface* com_sun_star_comp_Writer_RtfFilter_get_implementation(uno::XComponentContext* pComponent, uno::Sequence<uno::Any> const& /*rSequence*/)
{
    return cppu::acquire(new RtfFilter(pComponent));
}
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