/* -*- 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/.

 */

#include <svx/signaturelinehelper.hxx>

#include <com/sun/star/drawing/XShape.hpp>

#include <com/sun/star/graphic/GraphicProvider.hpp>

#include <com/sun/star/security/DocumentDigitalSignatures.hpp>

#include <comphelper/processfactory.hxx>

#include <comphelper/propertyvalue.hxx>

#include <comphelper/sequenceashashmap.hxx>

#include <comphelper/storagehelper.hxx>

#include <comphelper/xmlsechelper.hxx>

#include <config_folders.h>

#include <rtl/bootstrap.hxx>

#include <sal/log.hxx>

#include <sfx2/docfile.hxx>

#include <sfx2/docfilt.hxx>

#include <sfx2/objsh.hxx>

#include <svx/dialmgr.hxx>

#include <svx/strings.hrc>

#include <svx/svdmark.hxx>

#include <svx/svdview.hxx>

#include <tools/stream.hxx>

#include <unotools/localedatawrapper.hxx>

#include <unotools/streamwrap.hxx>

#include <unotools/syslocale.hxx>

#include <vcl/weld/weld.hxx>

#include <sfx2/digitalsignatures.hxx>

#include <sfx2/viewsh.hxx>

using namespace com::sun::star;

namespace svx::SignatureLineHelper

{

OUString getSignatureImage(const OUString& rType)

{

    OUString aType = rType;

    if (aType.isEmpty())

    {

        aType = "signature-line.svg";

    }

    OUString aPath("$BRAND_BASE_DIR/" LIBO_SHARE_FOLDER "/filter/" + aType);

    rtl::Bootstrap::expandMacros(aPath);

    SvFileStream aStream(aPath, StreamMode::READ);

    if (aStream.GetError() != ERRCODE_NONE)

    {

        SAL_WARN("cui.dialogs", "failed to open " << aType);

    }

    OString const svg = read_uInt8s_ToOString(aStream, aStream.remainingSize());

    return OUString::fromUtf8(svg);

}

uno::Reference<security::XCertificate>

getSignatureCertificate(SfxObjectShell* pShell, SfxViewShell* pViewShell, weld::Window* pParent)

{

    if (!pShell)

    {

        return {};

    }

    if (!pParent)

    {

        return {};

    }

    uno::Reference<security::XDocumentDigitalSignatures> xSigner;

    if (pShell->GetMedium()->GetFilter()->IsAlienFormat())

    {

        xSigner = security::DocumentDigitalSignatures::createDefault(

            comphelper::getProcessComponentContext());

    }

    else

    {

        OUString const aODFVersion(

            comphelper::OStorageHelper::GetODFVersionFromStorage(pShell->GetStorage()));

        xSigner = security::DocumentDigitalSignatures::createWithVersion(

            comphelper::getProcessComponentContext(), aODFVersion);

    }

    xSigner->setParentWindow(pParent->GetXWindow());

    OUString aDescription;

    security::CertificateKind certificateKind = security::CertificateKind_NONE;

    // When signing ooxml, we only want X.509 certificates

    if (pShell->GetMedium()->GetFilter()->IsAlienFormat())

    {

        certificateKind = security::CertificateKind_X509;

    }

    auto xModelSigner = dynamic_cast<sfx2::DigitalSignatures*>(xSigner.get());

    assert(xModelSigner);

    uno::Reference<security::XCertificate> xSignCertificate

        = xModelSigner->SelectSigningCertificateWithType(pViewShell, certificateKind, aDescription);

    return xSignCertificate;

}

OUString getSignerName(const svl::crypto::CertificateOrName& rCertificateOrName)

{

    if (rCertificateOrName.m_xCertificate.is())

    {

        return comphelper::xmlsec::GetContentPart(

            rCertificateOrName.m_xCertificate->getSubjectName(),

            rCertificateOrName.m_xCertificate->getCertificateKind());

    }

    return rCertificateOrName.m_aName;

}

OUString getLocalizedDate()

{

    const SvtSysLocale aSysLocale;

    const LocaleDataWrapper& rLocaleData = aSysLocale.GetLocaleData();

    Date aDateTime(Date::SYSTEM);

    return rLocaleData.getDate(aDateTime);

}

uno::Reference<graphic::XGraphic> importSVG(std::u16string_view rSVG)

{

    SvMemoryStream aSvgStream(4096, 4096);

    aSvgStream.WriteOString(OUStringToOString(rSVG, RTL_TEXTENCODING_UTF8));

    uno::Reference<io::XInputStream> xInputStream(new utl::OSeekableInputStreamWrapper(aSvgStream));

    const uno::Reference<uno::XComponentContext>& xContext(

        comphelper::getProcessComponentContext());

    uno::Reference<graphic::XGraphicProvider> xProvider

        = graphic::GraphicProvider::create(xContext);

    uno::Sequence<beans::PropertyValue> aMediaProperties{ comphelper::makePropertyValue(

        u"InputStream"_ustr, xInputStream) };

    uno::Reference<graphic::XGraphic> xGraphic(xProvider->queryGraphic(aMediaProperties));

    return xGraphic;

}

void setShapeCertificate(SfxViewShell* pViewShell,

                         const svl::crypto::CertificateOrName& rCertificateOrName)

{

    const SdrView* pView = pViewShell->GetDrawView();

    const SdrMarkList& rMarkList = pView->GetMarkedObjectList();

    if (rMarkList.GetMarkCount() < 1)

    {

        return;

    }

    const SdrMark* pMark = rMarkList.GetMark(0);

    SdrObject* pSignatureLine = pMark->GetMarkedSdrObj();

    if (!pSignatureLine)

    {

        return;

    }

    // Remember the selected certificate.

    uno::Reference<drawing::XShape> xShape = pSignatureLine->getUnoShape();

    uno::Reference<beans::XPropertySet> xShapeProps(xShape, uno::UNO_QUERY);

    pViewShell->SetSignPDFCertificate(rCertificateOrName);

    // Read svg and replace placeholder texts.

    OUString aSvgImage(

        svx::SignatureLineHelper::getSignatureImage(u"signature-line-draw.svg"_ustr));

    aSvgImage = aSvgImage.replaceAll("[SIGNED_BY]", SvxResId(RID_SVXSTR_SIGNATURELINE_DSIGNED_BY));

    OUString aSignerName = svx::SignatureLineHelper::getSignerName(rCertificateOrName);

    aSvgImage = aSvgImage.replaceAll("[SIGNER_NAME]", aSignerName);

    OUString aDate = svx::SignatureLineHelper::getLocalizedDate();

    aDate = SvxResId(RID_SVXSTR_SIGNATURELINE_DATE).replaceFirst("%1", aDate);

    aSvgImage = aSvgImage.replaceAll("[DATE]", aDate);

    uno::Reference<graphic::XGraphic> xGraphic = svx::SignatureLineHelper::importSVG(aSvgImage);

    xShapeProps->setPropertyValue(u"Graphic"_ustr, uno::Any(xGraphic));

}

}

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