/* -*- 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 <config_features.h>

#include <macroloader.hxx>

#include <com/sun/star/frame/DispatchResultState.hpp>

#include <basic/basmgr.hxx>

#include <basic/sbuno.hxx>

#include <basic/sberrors.hxx>

#include <cppuhelper/supportsservice.hxx>

#include <cppuhelper/weak.hxx>

#include <cppuhelper/weakref.hxx>

#include <framework/documentundoguard.hxx>

#include <sfx2/app.hxx>

#include <sfx2/frame.hxx>

#include <sfx2/objsh.hxx>

#include <tools/urlobj.hxx>

#include <vcl/svapp.hxx>

#include <memory>

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

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

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

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

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

SfxMacroLoader::SfxMacroLoader(const css::uno::Sequence< css::uno::Any >& aArguments)

{

    Reference < XFrame > xFrame;

    if ( aArguments.hasElements() )

    {

        aArguments[0] >>= xFrame;

        m_xFrame = xFrame;

    }

}

OUString SAL_CALL SfxMacroLoader::getImplementationName()

{

    return u"com.sun.star.comp.sfx2.SfxMacroLoader"_ustr;

}

sal_Bool SAL_CALL SfxMacroLoader::supportsService(OUString const & ServiceName)

{

    return cppu::supportsService(this, ServiceName);

}

css::uno::Sequence<OUString> SAL_CALL SfxMacroLoader::getSupportedServiceNames()

{

    return { u"com.sun.star.frame.ProtocolHandler"_ustr };

}

SfxObjectShell* SfxMacroLoader::GetObjectShell(const Reference <XFrame>& xFrame)

{

    SfxObjectShell* pDocShell = nullptr;

    if ( xFrame.is() )

    {

        SfxFrame* pFrame=nullptr;

        for ( pFrame = SfxFrame::GetFirst(); pFrame; pFrame = SfxFrame::GetNext( *pFrame ) )

        {

            if ( pFrame->GetFrameInterface() == xFrame )

                break;

        }

        if ( pFrame )

            pDocShell = pFrame->GetCurrentDocument();

    }

    return pDocShell;

}

SfxObjectShell* SfxMacroLoader::GetObjectShell_Impl()

{

    Reference < XFrame > xFrame( m_xFrame.get(), UNO_QUERY );

    return SfxMacroLoader::GetObjectShell(xFrame);

}

uno::Reference<frame::XDispatch> SAL_CALL SfxMacroLoader::queryDispatch(

    const util::URL&   aURL            ,

    const OUString&               /*sTargetFrameName*/,

    sal_Int32                            /*nSearchFlags*/    )

{

    uno::Reference<frame::XDispatch> xDispatcher;

    if(aURL.Complete.startsWith("macro:"))

        xDispatcher = this;

    return xDispatcher;

}

uno::Sequence< uno::Reference<frame::XDispatch> > SAL_CALL

                SfxMacroLoader::queryDispatches( const uno::Sequence < frame::DispatchDescriptor >& seqDescriptor )

{

    sal_Int32 nCount = seqDescriptor.getLength();

    uno::Sequence< uno::Reference<frame::XDispatch> > lDispatcher(nCount);

    std::transform(seqDescriptor.begin(), seqDescriptor.end(), lDispatcher.getArray(),

        [this](const frame::DispatchDescriptor& rDescr) -> uno::Reference<frame::XDispatch> {

            return queryDispatch(rDescr.FeatureURL, rDescr.FrameName, rDescr.SearchFlags); });

    return lDispatcher;

}

void SAL_CALL SfxMacroLoader::dispatchWithNotification(

    const util::URL& aURL, const uno::Sequence<beans::PropertyValue>& /*lArgs*/,

    const uno::Reference<frame::XDispatchResultListener>& xListener )

{

    SolarMutexGuard aGuard;

    uno::Any aAny;

    ErrCode nErr = loadMacro( aURL.Complete, aAny, GetObjectShell_Impl() );

    if( !xListener.is() )

        return;

    // always call dispatchFinished(), because we didn't load a document but

    // executed a macro instead!

    frame::DispatchResultEvent aEvent;

    aEvent.Source = getXWeak();

    if( nErr == ERRCODE_NONE )

        aEvent.State = frame::DispatchResultState::SUCCESS;

    else

        aEvent.State = frame::DispatchResultState::FAILURE;

    xListener->dispatchFinished( aEvent ) ;

}

uno::Any SAL_CALL SfxMacroLoader::dispatchWithReturnValue(

    const util::URL& aURL, const uno::Sequence<beans::PropertyValue>& )

{

    uno::Any aRet;

    ErrCode nErr = loadMacro( aURL.Complete, aRet, GetObjectShell_Impl() );

    // aRet gets set to a different value only if nErr == ERRCODE_NONE

    // Return it in such case to preserve the original behaviour

    // In all other cases (nErr != ERRCODE_NONE), the calling code gets

    // the actual error code back

    if ( nErr != ERRCODE_NONE )

    {

        beans::PropertyValue aErrorCode;

        aErrorCode.Name = "ErrorCode";

        aErrorCode.Value <<= sal_uInt32(nErr);

        aRet <<= aErrorCode;

    }

    return aRet;

}

void SAL_CALL SfxMacroLoader::dispatch(

    const util::URL& aURL, const uno::Sequence<beans::PropertyValue>& /*lArgs*/ )

{

    SolarMutexGuard aGuard;

    uno::Any aAny;

    loadMacro( aURL.Complete, aAny, GetObjectShell_Impl() );

}

void SAL_CALL SfxMacroLoader::addStatusListener(

    const uno::Reference< frame::XStatusListener >& ,

    const util::URL&                                                    )

{

    /* TODO

            How we can handle different listener for further coming or currently running dispatch() jobs

            without any inconsistency!

     */

}

void SAL_CALL SfxMacroLoader::removeStatusListener(

    const uno::Reference< frame::XStatusListener >&,

    const util::URL&                                                  )

{

}

ErrCode SfxMacroLoader::loadMacro( const OUString& rURL, css::uno::Any& rRetval, SfxObjectShell* pSh )

{

#if !HAVE_FEATURE_SCRIPTING

    (void) rURL;

    (void) rRetval;

    (void) pSh;

    return ERRCODE_BASIC_PROC_UNDEFINED;

#else

    SfxObjectShell* pCurrent = pSh;

    if ( !pCurrent )

        // all not full qualified names use the BASIC of the given or current document

        pCurrent = SfxObjectShell::Current();

    // 'macro:///lib.mod.proc(args)' => macro of App-BASIC

    // 'macro://[docname|.]/lib.mod.proc(args)' => macro of current or qualified document

    // 'macro://obj.method(args)' => direct API call, execute it via App-BASIC

    const OUString& aMacro( rURL );

    sal_Int32 nThirdSlashPos = aMacro.indexOf( '/', 8 );

    sal_Int32 nArgsPos = aMacro.indexOf( '(' );

    BasicManager *pAppMgr = SfxApplication::GetBasicManager();

    BasicManager *pBasMgr = nullptr;

    ErrCode nErr = ERRCODE_NONE;

    // should a macro function be executed ( no direct API call)?

    if ( -1 != nThirdSlashPos && ( -1 == nArgsPos || nThirdSlashPos < nArgsPos ) )

    {

        // find BasicManager

        SfxObjectShell* pDoc = nullptr;

        OUString aBasMgrName( INetURLObject::decode(aMacro.subView( 8, nThirdSlashPos-8 ), INetURLObject::DecodeMechanism::WithCharset) );

        if ( aBasMgrName.isEmpty() )

            pBasMgr = pAppMgr;

        else if ( aBasMgrName == "." )

        {

            // current/actual document

            pDoc = pCurrent;

            if (pDoc)

                pBasMgr = pDoc->GetBasicManager();

        }

        else

        {

            // full qualified name, find document by name

            for ( SfxObjectShell *pObjSh = SfxObjectShell::GetFirst();

                    pObjSh && !pBasMgr;

                    pObjSh = SfxObjectShell::GetNext(*pObjSh) )

                if ( aBasMgrName == pObjSh->GetTitle(SFX_TITLE_APINAME) )

                {

                    pDoc = pObjSh;

                    pBasMgr = pDoc->GetBasicManager();

                }

        }

        if ( pBasMgr )

        {

            const bool bIsAppBasic = ( pBasMgr == pAppMgr );

            const bool bIsDocBasic = ( pBasMgr != pAppMgr );

            if ( pDoc )

            {

                // security check for macros from document basic if an SFX doc is given

                if ( !pDoc->AdjustMacroMode() )

                    // check forbids execution

                    return ERRCODE_IO_ACCESSDENIED;

            }

            // find BASIC method

            OUString aQualifiedMethod( INetURLObject::decode(aMacro.subView( nThirdSlashPos+1 ), INetURLObject::DecodeMechanism::WithCharset) );

            OUString aArgs;

            if ( -1 != nArgsPos )

            {

                // remove arguments from macro name

                aArgs = aQualifiedMethod.copy( nArgsPos - nThirdSlashPos - 1 );

                aQualifiedMethod = aQualifiedMethod.copy( 0, nArgsPos - nThirdSlashPos - 1 );

            }

            if ( pBasMgr->HasMacro( aQualifiedMethod ) )

            {

                Any aOldThisComponent;

                const bool bSetDocMacroMode = ( pDoc != nullptr ) && bIsDocBasic;

                const bool bSetGlobalThisComponent = ( pDoc != nullptr ) && bIsAppBasic;

                if ( bSetDocMacroMode )

                {

                    // mark document: it executes an own macro, so it's in a modal mode

                    pDoc->SetMacroMode_Impl();

                }

                if ( bSetGlobalThisComponent )

                {

                    // document is executed via AppBASIC, adjust ThisComponent variable

                    pAppMgr->SetGlobalUNOConstant( u"ThisComponent"_ustr, Any( pDoc->GetModel() ), &aOldThisComponent );

                }

                // just to let the shell be alive

                SfxObjectShellRef xKeepDocAlive = pDoc;

                {

                    // attempt to protect the document against the script tampering with its Undo Context

                    std::optional< ::framework::DocumentUndoGuard > pUndoGuard;

                    if ( bIsDocBasic )

                        pUndoGuard.emplace( pDoc->GetModel() );

                    // execute the method

                    SbxVariableRef retValRef = new SbxVariable;

                    nErr = pBasMgr->ExecuteMacro( aQualifiedMethod, aArgs, retValRef.get() );

                    if ( nErr == ERRCODE_NONE )

                        rRetval = sbxToUnoValue( retValRef.get() );

                }

                if ( bSetGlobalThisComponent )

                {

                    pAppMgr->SetGlobalUNOConstant( u"ThisComponent"_ustr, aOldThisComponent );

                }

                if ( bSetDocMacroMode )

                {

                    // remove flag for modal mode

                    pDoc->SetMacroMode_Impl( false );

                }

            }

            else

                nErr = ERRCODE_BASIC_PROC_UNDEFINED;

        }

        else

            nErr = ERRCODE_IO_NOTEXISTS;

    }

    else

    {

        // direct API call on a specified object

        OUString aCall =

            "[" +

            INetURLObject::decode(aMacro.subView(6),

                    INetURLObject::DecodeMechanism::WithCharset) +

            "]";

        pAppMgr->GetLib(0)->Execute(aCall);

        nErr = SbxBase::GetError();

    }

    SbxBase::ResetError();

    return nErr;

#endif

}

extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *

com_sun_star_comp_sfx2_SfxMacroLoader_get_implementation(

    css::uno::XComponentContext *,

    css::uno::Sequence<css::uno::Any> const &arguments)

{

    return cppu::acquire(new SfxMacroLoader(arguments));

}

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