/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sw.hxx"
#include "swdetect.hxx"

#include <framework/interaction.hxx>
#include <com/sun/star/frame/XFrame.hpp>
#include <com/sun/star/frame/XModel.hpp>
#include <com/sun/star/lang/XUnoTunnel.hpp>
#ifndef _UNOTOOLS_PROCESSFACTORY_HXX
#include <comphelper/processfactory.hxx>
#endif
#include <com/sun/star/container/XNameAccess.hpp>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/task/XInteractionHandler.hpp>
#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
#include <com/sun/star/ucb/CommandAbortedException.hpp>
#include <com/sun/star/ucb/InteractiveAppException.hpp>
#include <com/sun/star/ucb/XContent.hpp>
#include <com/sun/star/packages/zip/ZipIOException.hpp>
#ifndef _TOOLKIT_UNOHLP_HXX
#include <toolkit/helper/vclunohelper.hxx>
#endif
#include <ucbhelper/simpleinteractionrequest.hxx>
#include <rtl/ustring.h>
#include <rtl/logfile.hxx>
#include <svl/itemset.hxx>
#include <vcl/window.hxx>
#include <svl/eitem.hxx>
#include <svl/stritem.hxx>
#include <tools/urlobj.hxx>
#include <vos/mutex.hxx>
#include <svtools/sfxecode.hxx>
#include <svtools/ehdl.hxx>
#include <sot/storinfo.hxx>
#include <vcl/svapp.hxx>
#include <sfx2/app.hxx>
#include <sfx2/sfxsids.hrc>
#include <sfx2/request.hxx>
#include <sfx2/docfile.hxx>
#include <sfx2/docfilt.hxx>
#include <sfx2/fcontnr.hxx>
#include <sfx2/brokenpackageint.hxx>
#include <svtools/FilterConfigItem.hxx>
#include <unotools/moduleoptions.hxx>
#include <com/sun/star/util/XArchiver.hpp>
#include <comphelper/ihwrapnofilter.hxx>

#include <swdll.hxx>

using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::frame;
using namespace ::com::sun::star::task;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::ucb;
using ::rtl::OUString;

SwFilterDetect::SwFilterDetect( const REFERENCE < lang::XMultiServiceFactory >& /*xFactory*/ )
{
}

SwFilterDetect::~SwFilterDetect()
{
}

::rtl::OUString SAL_CALL SwFilterDetect::detect( uno::Sequence< beans::PropertyValue >& lDescriptor ) throw( uno::RuntimeException )
{
    REFERENCE< XInputStream > xStream;
    REFERENCE< XContent > xContent;
    REFERENCE< XInteractionHandler > xInteraction;
    String aURL;
	::rtl::OUString sTemp;
    String aTypeName;            // a name describing the type (from MediaDescriptor, usually from flat detection)
    String aPreselectedFilterName;      // a name describing the filter to use (from MediaDescriptor, usually from UI action)

	::rtl::OUString aDocumentTitle; // interesting only if set in this method

	// opening as template is done when a parameter tells to do so and a template filter can be detected
    // (otherwise no valid filter would be found) or if the detected filter is a template filter and
	// there is no parameter that forbids to open as template
	sal_Bool bOpenAsTemplate = sal_False;
    sal_Bool bWasReadOnly = sal_False, bReadOnly = sal_False;

	sal_Bool bRepairPackage = sal_False;
	sal_Bool bRepairAllowed = sal_False;

	// now some parameters that can already be in the array, but may be overwritten or new inserted here
	// remember their indices in the case new values must be added to the array
	sal_Int32 nPropertyCount = lDescriptor.getLength();
    sal_Int32 nIndexOfFilterName = -1;
    sal_Int32 nIndexOfInputStream = -1;
    sal_Int32 nIndexOfContent = -1;
    sal_Int32 nIndexOfReadOnlyFlag = -1;
    sal_Int32 nIndexOfTemplateFlag = -1;
    sal_Int32 nIndexOfDocumentTitle = -1;
    sal_Int32 nIndexOfInteractionHandler = -1;

    for( sal_Int32 nProperty=0; nProperty<nPropertyCount; ++nProperty )
	{
        // extract properties
        if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("URL")) )
		{
			lDescriptor[nProperty].Value >>= sTemp;
			aURL = sTemp;
		}
        else if( !aURL.Len() && lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("FileName")) )
		{
			lDescriptor[nProperty].Value >>= sTemp;
			aURL = sTemp;
		}
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("TypeName")) )
		{
			lDescriptor[nProperty].Value >>= sTemp;
            aTypeName = sTemp;
		}
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("FilterName")) )
		{
			lDescriptor[nProperty].Value >>= sTemp;
            aPreselectedFilterName = sTemp;

            // if the preselected filter name is not correct, it must be erased after detection
            // remember index of property to get access to it later
            nIndexOfFilterName = nProperty;
		}
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("InputStream")) )
            nIndexOfInputStream = nProperty;
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("ReadOnly")) )
            nIndexOfReadOnlyFlag = nProperty;
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("UCBContent")) )
            nIndexOfContent = nProperty;
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("AsTemplate")) )
		{
			lDescriptor[nProperty].Value >>= bOpenAsTemplate;
            nIndexOfTemplateFlag = nProperty;
		}
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("InteractionHandler")) )
        {
            lDescriptor[nProperty].Value >>= xInteraction;
            nIndexOfInteractionHandler = nProperty;
        }
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("RepairPackage")) )
            lDescriptor[nProperty].Value >>= bRepairPackage;
        else if( lDescriptor[nProperty].Name == OUString(RTL_CONSTASCII_USTRINGPARAM("DocumentTitle")) )
            nIndexOfDocumentTitle = nProperty;
	}

    // can't check the type for external filters, so set the "dont" flag accordingly
    ::vos::OGuard aGuard( Application::GetSolarMutex() );
    //SfxFilterFlags nMust = SFX_FILTER_IMPORT, nDont = SFX_FILTER_NOTINSTALLED;

    SfxApplication* pApp = SFX_APP();
    SfxAllItemSet *pSet = new SfxAllItemSet( pApp->GetPool() );
    TransformParameters( SID_OPENDOC, lDescriptor, *pSet );
    SFX_ITEMSET_ARG( pSet, pItem, SfxBoolItem, SID_DOC_READONLY );

    bWasReadOnly = pItem && pItem->GetValue();

	const SfxFilter* pFilter = 0;
	String aPrefix = String::CreateFromAscii( "private:factory/" );
	if( aURL.Match( aPrefix ) == aPrefix.Len() )
	{
		if( SvtModuleOptions().IsWriter() )
		{
			String aPattern( aPrefix );
			aPattern += String::CreateFromAscii("swriter");
			if ( aURL.Match( aPattern ) >= aPattern.Len() )
				//pFilter = SfxFilter::GetDefaultFilterFromFactory( aURL );
				return aTypeName;
		}
	}
	else
	{
	    // ctor of SfxMedium uses owner transition of ItemSet
	    SfxMedium aMedium( aURL, bWasReadOnly ? STREAM_STD_READ : STREAM_STD_READWRITE, sal_False, NULL, pSet );
	    aMedium.UseInteractionHandler( sal_True );
	    if ( aMedium.GetErrorCode() == ERRCODE_NONE )
	    {
	        // remember input stream and content and put them into the descriptor later
			// should be done here since later the medium can switch to a version
	        xStream = aMedium.GetInputStream();
			xContent = aMedium.GetContent();
            bReadOnly = aMedium.IsReadOnly();

        	sal_Bool bIsStorage = aMedium.IsStorage();
            if ( bIsStorage )
			{
                uno::Reference< embed::XStorage > xStorage = aMedium.GetStorage( sal_False );
				if ( aMedium.GetLastStorageCreationState() != ERRCODE_NONE )
				{
					// error during storage creation means _here_ that the medium
                    // is broken, but we can not handle it in medium since impossibility
					// to create a storage does not _always_ means that the medium is broken
					aMedium.SetError( aMedium.GetLastStorageCreationState(), ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX ) ) );
					if ( xInteraction.is() )
					{
						OUString empty;
						try
						{
							InteractiveAppException xException( empty,
															REFERENCE< XInterface >(),
															InteractionClassification_ERROR,
															aMedium.GetError() );

							REFERENCE< XInteractionRequest > xRequest(
								new ucbhelper::SimpleInteractionRequest( makeAny( xException ),
																 	 ucbhelper::CONTINUATION_APPROVE ) );
							xInteraction->handle( xRequest );
						}
						catch ( Exception & ) {};
					}
				}
				else
				{
					DBG_ASSERT( xStorage.is(), "At this point storage must exist!" );

					try
					{
                        const SfxFilter* pPreFilter = aPreselectedFilterName.Len() ?
                                SfxFilterMatcher().GetFilter4FilterName( aPreselectedFilterName ) : aTypeName.Len() ?
                                SfxFilterMatcher(String::CreateFromAscii("swriter")).GetFilter4EA( aTypeName ) : 0;
                        if (!pPreFilter)
                            pPreFilter = SfxFilterMatcher(String::CreateFromAscii("sweb")).GetFilter4EA( aTypeName );
                        String aFilterName;
                        if ( pPreFilter )
                        {
                            aFilterName = pPreFilter->GetName();
                            aTypeName = pPreFilter->GetTypeName();
                        }

                        aTypeName = SfxFilter::GetTypeFromStorage( xStorage, pPreFilter ? pPreFilter->IsOwnTemplateFormat() : sal_False, &aFilterName );
					}
					catch( lang::WrappedTargetException& aWrap )
					{
						packages::zip::ZipIOException aZipException;

						// repairing is done only if this type is requested from outside
                        // we don't do any type detection on broken packages (f.e. because it might be impossible), so any requested
                        // type will be accepted if the user allows to repair the file
                        if ( ( aWrap.TargetException >>= aZipException ) && ( aTypeName.Len() || aPreselectedFilterName.Len() ) )
						{
							if ( xInteraction.is() )
							{
                                // the package is a broken one
       							aDocumentTitle = aMedium.GetURLObject().getName(
															INetURLObject::LAST_SEGMENT,
															true,
															INetURLObject::DECODE_WITH_CHARSET );

								if ( !bRepairPackage )
								{
                                    // ask the user whether he wants to try to repair
                                    RequestPackageReparation aRequest( aDocumentTitle );
                                    xInteraction->handle( aRequest.GetRequest() );
                                    bRepairAllowed = aRequest.isApproved();
								}

								if ( !bRepairAllowed )
								{
									// repair either not allowed or not successful
									// repair either not allowed or not successful
                                    NotifyBrokenPackage aNotifyRequest( aDocumentTitle );
                                    xInteraction->handle( aNotifyRequest.GetRequest() );

                                    rtl::Reference< ::comphelper::OIHWrapNoFilterDialog > xHandler = new ::comphelper::OIHWrapNoFilterDialog( xInteraction );
                                    if ( nIndexOfInteractionHandler != -1 )
                                        lDescriptor[nIndexOfInteractionHandler].Value <<= uno::Reference< XInteractionHandler >( static_cast< task::XInteractionHandler* >( xHandler.get() ) );

									aMedium.SetError( ERRCODE_ABORT, ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX ) ) );
								}
							}
							else
                                // no interaction, error handling as usual
								aMedium.SetError( ERRCODE_IO_BROKENPACKAGE, ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX ) ) );

							if ( !bRepairAllowed )
							{
								aTypeName.Erase();
								aPreselectedFilterName.Erase();
							}
						}
					}
					catch( uno::RuntimeException& )
					{
						throw;
					}
					catch( uno::Exception& )
					{
						aTypeName.Erase();
						aPreselectedFilterName.Erase();
					}
				}
			}
            else
            {
                aMedium.GetInStream();
                if ( aMedium.GetErrorCode() == ERRCODE_NONE )
                {
                    if ( aPreselectedFilterName.Len() )
                        pFilter = SfxFilter::GetFilterByName( aPreselectedFilterName );
                    else
                        pFilter = SfxFilterMatcher().GetFilter4EA( aTypeName );

                    sal_Bool bTestWriter = !pFilter || pFilter->GetServiceName().EqualsAscii("com.sun.star.text.TextDocument") ||
                        pFilter->GetServiceName().EqualsAscii("com.sun.star.text.WebDocument");
                    sal_Bool bTestGlobal = !pFilter || pFilter->GetServiceName().EqualsAscii("com.sun.star.text.GlobalDocument");

                    const SfxFilter* pOrigFilter = NULL;
                    if ( !bTestWriter && !bTestGlobal && pFilter )
                    {
                        // cross filter; now this should be a type detection only, not a filter detection
                        // we can simulate it by preserving the preselected filter if the type matches
                        // example: HTML filter for Calc
                        pOrigFilter = pFilter;
                        pFilter = SfxFilterMatcher().GetFilter4EA( pFilter->GetTypeName() );
                        bTestWriter = sal_True;
                    }

                    sal_uLong nErr = ERRCODE_NONE;
                    if ( pFilter || bTestWriter )
                        nErr = DetectFilter( aMedium, &pFilter );
                    if ( nErr != ERRCODE_NONE )
                        pFilter = NULL;
                    else if ( pOrigFilter && pFilter && pFilter->GetTypeName() == pOrigFilter->GetTypeName() )
                        // cross filter, see above
                        pFilter = pOrigFilter;
                }

                if ( pFilter )
                    aTypeName = pFilter->GetTypeName();
                else
                    aTypeName.Erase();
            }
		}
	}

    if ( nIndexOfInputStream == -1 && xStream.is() )
    {
        // if input stream wasn't part of the descriptor, now it should be, otherwise the content would be opend twice
        lDescriptor.realloc( nPropertyCount + 1 );
        lDescriptor[nPropertyCount].Name = ::rtl::OUString::createFromAscii("InputStream");
        lDescriptor[nPropertyCount].Value <<= xStream;
        nPropertyCount++;
    }

    if ( nIndexOfContent == -1 && xContent.is() )
    {
        // if input stream wasn't part of the descriptor, now it should be, otherwise the content would be opend twice
        lDescriptor.realloc( nPropertyCount + 1 );
        lDescriptor[nPropertyCount].Name = ::rtl::OUString::createFromAscii("UCBContent");
        lDescriptor[nPropertyCount].Value <<= xContent;
        nPropertyCount++;
    }

    if ( bReadOnly != bWasReadOnly )
    {
        if ( nIndexOfReadOnlyFlag == -1 )
        {
            lDescriptor.realloc( nPropertyCount + 1 );
            lDescriptor[nPropertyCount].Name = ::rtl::OUString::createFromAscii("ReadOnly");
            lDescriptor[nPropertyCount].Value <<= bReadOnly;
            nPropertyCount++;
        }
        else
            lDescriptor[nIndexOfReadOnlyFlag].Value <<= bReadOnly;
    }

	if ( !bRepairPackage && bRepairAllowed )
	{
        lDescriptor.realloc( nPropertyCount + 1 );
        lDescriptor[nPropertyCount].Name = ::rtl::OUString::createFromAscii("RepairPackage");
        lDescriptor[nPropertyCount].Value <<= bRepairAllowed;
        nPropertyCount++;
		bOpenAsTemplate = sal_True;
		// TODO/LATER: set progress bar that should be used
	}

	if ( bOpenAsTemplate )
	{
		if ( nIndexOfTemplateFlag == -1 )
		{
        	lDescriptor.realloc( nPropertyCount + 1 );
        	lDescriptor[nPropertyCount].Name = ::rtl::OUString::createFromAscii("AsTemplate");
        	lDescriptor[nPropertyCount].Value <<= bOpenAsTemplate;
        	nPropertyCount++;
		}
		else
        	lDescriptor[nIndexOfTemplateFlag].Value <<= bOpenAsTemplate;
	}

	if ( aDocumentTitle.getLength() )
	{
		// the title was set here
		if ( nIndexOfDocumentTitle == -1 )
		{
        	lDescriptor.realloc( nPropertyCount + 1 );
        	lDescriptor[nPropertyCount].Name = ::rtl::OUString::createFromAscii("DocumentTitle");
        	lDescriptor[nPropertyCount].Value <<= aDocumentTitle;
        	nPropertyCount++;
		}
		else
        	lDescriptor[nIndexOfDocumentTitle].Value <<= aDocumentTitle;
	}


    return aTypeName;
}

SFX_IMPL_SINGLEFACTORY( SwFilterDetect )

/* XServiceInfo */
UNOOUSTRING SAL_CALL SwFilterDetect::getImplementationName() throw( UNORUNTIMEEXCEPTION )
{
    return impl_getStaticImplementationName();
}
                                                                                                                                \
/* XServiceInfo */
sal_Bool SAL_CALL SwFilterDetect::supportsService( const UNOOUSTRING& sServiceName ) throw( UNORUNTIMEEXCEPTION )
{
    UNOSEQUENCE< UNOOUSTRING >  seqServiceNames =   getSupportedServiceNames();
    const UNOOUSTRING*          pArray          =   seqServiceNames.getConstArray();
    for ( sal_Int32 nCounter=0; nCounter<seqServiceNames.getLength(); nCounter++ )
    {
        if ( pArray[nCounter] == sServiceName )
        {
            return sal_True ;
        }
    }
    return sal_False ;
}

/* XServiceInfo */
UNOSEQUENCE< UNOOUSTRING > SAL_CALL SwFilterDetect::getSupportedServiceNames() throw( UNORUNTIMEEXCEPTION )
{
    return impl_getStaticSupportedServiceNames();
}

/* Helper for XServiceInfo */
UNOSEQUENCE< UNOOUSTRING > SwFilterDetect::impl_getStaticSupportedServiceNames()
{
    UNOMUTEXGUARD aGuard( UNOMUTEX::getGlobalMutex() );
    UNOSEQUENCE< UNOOUSTRING > seqServiceNames( 3 );
    seqServiceNames.getArray() [0] = UNOOUSTRING::createFromAscii( "com.sun.star.frame.ExtendedTypeDetection"  );
    seqServiceNames.getArray() [1] = UNOOUSTRING::createFromAscii( "com.sun.star.text.FormatDetector"  );
    seqServiceNames.getArray() [2] = UNOOUSTRING::createFromAscii( "com.sun.star.text.W4WFormatDetector"  );
    return seqServiceNames ;
}

/* Helper for XServiceInfo */
UNOOUSTRING SwFilterDetect::impl_getStaticImplementationName()
{
    return UNOOUSTRING::createFromAscii( "com.sun.star.comp.writer.FormatDetector" );
}

/* Helper for registry */
UNOREFERENCE< UNOXINTERFACE > SAL_CALL SwFilterDetect::impl_createInstance( const UNOREFERENCE< UNOXMULTISERVICEFACTORY >& xServiceManager ) throw( UNOEXCEPTION )
{
    return UNOREFERENCE< UNOXINTERFACE >( *new SwFilterDetect( xServiceManager ) );
}