/* -*- 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 <sal/config.h>

#include <cassert>

#include <about.hxx>

#include <osl/process.h>     //osl_getProcessLocale
#include <rtl/bootstrap.hxx>
#include <sal/log.hxx>       //SAL_WARN
#include <vcl/graph.hxx>     //Graphic
#include <vcl/settings.hxx>  //GetSettings
#include <vcl/svapp.hxx>     //Application::
#include <vcl/weld.hxx>
#include <unotools/resmgr.hxx> //Translate

#include <config_buildid.h> //EXTRA_BUILDID
#include <config_features.h>
#include <dialmgr.hxx>      //CuiResId
#include <i18nlangtag/languagetag.hxx>
#include <sfx2/app.hxx> //SfxApplication::loadBrandSvg
#include <strings.hrc>
#include <svtools/langhelp.hxx>
#include <unotools/bootstrap.hxx> //utl::Bootstrap::getBuildIdData
#include <unotools/configmgr.hxx> //ConfigManager::

#include <com/sun/star/datatransfer/clipboard/SystemClipboard.hpp>
#include <vcl/unohelp2.hxx>

#include <config_feature_opencl.h>
#if HAVE_FEATURE_OPENCL
#include <opencl/openclwrapper.hxx>
#endif
#include <officecfg/Office/Calc.hxx>
#include <officecfg/Office/Common.hxx>

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

AboutDialog::AboutDialog(weld::Window *pParent)
    : GenericDialogController(pParent, u"cui/ui/aboutdialog.ui"_ustr, u"AboutDialog"_ustr),
      m_pCreditsButton(m_xBuilder->weld_link_button(u"btnCredits"_ustr)),
      m_pWebsiteButton(m_xBuilder->weld_link_button(u"btnWebsite"_ustr)),
      m_pReleaseNotesButton(m_xBuilder->weld_link_button(u"btnReleaseNotes"_ustr)),
      m_pCloseButton(m_xBuilder->weld_button(u"btnClose"_ustr)),
      m_pCopyButton(m_xBuilder->weld_button(u"btnCopyVersion"_ustr)),
      m_pBrandImage(m_xBuilder->weld_image(u"imBrand"_ustr)),
      m_pAboutImage(m_xBuilder->weld_image(u"imAbout"_ustr)),
      m_pVersionLabel(m_xBuilder->weld_label(u"lbVersionString"_ustr)),
      m_pBuildCaption(m_xBuilder->weld_label(u"lbBuild"_ustr)),
      m_pBuildLabel(m_xBuilder->weld_link_button(u"lbBuildString"_ustr)),
      m_pEnvLabel(m_xBuilder->weld_label(u"lbEnvString"_ustr)),
      m_pUILabel(m_xBuilder->weld_label(u"lbUIString"_ustr)),
      m_pLocaleLabel(m_xBuilder->weld_label(u"lbLocaleString"_ustr)),
      m_pMiscLabel(m_xBuilder->weld_label(u"lbMiscString"_ustr)),
      m_pCopyrightLabel(m_xBuilder->weld_label(u"lbCopyright"_ustr)) {

  // Labels
  m_pVersionLabel->set_label(GetVersionString());

  OUString sbuildId = GetBuildString();
  if (IsStringValidGitHash(sbuildId)) {
    const tools::Long nMaxChar = 25;
    m_pBuildLabel->set_uri("https://git.libreoffice.org/core/history/" + sbuildId);
    m_pBuildLabel->set_label(sbuildId.getLength() > nMaxChar ? sbuildId.replaceAt(
                                 nMaxChar, sbuildId.getLength() - nMaxChar, u"...")
                                                             : sbuildId);
  } else {
    m_pBuildCaption->hide();
    m_pBuildLabel->hide();
  }

  m_pEnvLabel->set_label(Application::GetHWOSConfInfo(1));
  m_pUILabel->set_label(Application::GetHWOSConfInfo(2));
  m_pLocaleLabel->set_label(GetLocaleString());
  m_pMiscLabel->set_label(GetMiscString());
  m_pCopyrightLabel->set_label(GetCopyrightString());

  // Images
  const tools::Long nWidth(m_pCopyrightLabel->get_preferred_size().getWidth());
  BitmapEx aBackgroundBitmap;

  if (SfxApplication::loadBrandSvg(Application::GetSettings()
                                           .GetStyleSettings()
                                           .GetDialogColor()
                                           .IsDark()
                                       ? "shell/logo_inverted"
                                       : "shell/logo",
                                   aBackgroundBitmap, nWidth * 0.8)) {
    // Eliminate white background when Skia is disabled by not drawing the
    // background bitmap to a VirtualDevice. On most platforms, non-Skia
    // VirtualDevices will be filled with a solid color when drawing
    // the bitmap.
    Graphic aGraphic(aBackgroundBitmap);
    m_pBrandImage->set_image(aGraphic.GetXGraphic());
  }
  if (SfxApplication::loadBrandSvg("shell/about", aBackgroundBitmap, nWidth * 0.9)) {
    // Eliminate white background when Skia is disabled by not drawing the
    // background bitmap to a VirtualDevice. On most platforms, non-Skia
    // VirtualDevices will be filled with a solid color when drawing
    // the bitmap.
    Graphic aGraphic(aBackgroundBitmap);
    m_pAboutImage->set_image(aGraphic.GetXGraphic());
  }

  // Links
  m_pCreditsButton->set_uri(officecfg::Office::Common::Menus::CreditsURL::get());

  OUString sURL(officecfg::Office::Common::Help::StartCenter::InfoURL::get());
  localizeWebserviceURI(sURL);
  m_pWebsiteButton->set_uri(sURL);

  // See also SID_WHATSNEW in sfx2/source/appl/appserv.cxx
  sURL = officecfg::Office::Common::Menus::ReleaseNotesURL::get() +
         "?LOvers=" + utl::ConfigManager::getProductVersion() + "&LOlocale=" +
         LanguageTag(utl::ConfigManager::getUILocale()).getBcp47();
  m_pReleaseNotesButton->set_uri(sURL);

  // Handler
  m_pCopyButton->connect_clicked(LINK(this, AboutDialog, HandleClick));
  m_pCloseButton->grab_focus();
}

AboutDialog::~AboutDialog() {}

bool AboutDialog::IsStringValidGitHash(std::u16string_view hash) {
  return std::all_of(hash.begin(), hash.end(),
                     [](auto &rSymbol) { return std::isxdigit(rSymbol); });
}

OUString AboutDialog::GetVersionString() {
  OUString arch;
  auto const ok = rtl::Bootstrap::get(u"_ARCH"_ustr, arch);
  assert(ok); (void) ok;
  OUString sVersion = CuiResId(TranslateId(nullptr, "%ABOUTBOXPRODUCTVERSION%ABOUTBOXPRODUCTVERSIONSUFFIX")) + " (" + arch + ")";

#if HAVE_FEATURE_COMMUNITY_FLAVOR
  sVersion += " / LibreOffice Community";
#endif

  return sVersion;
}

OUString AboutDialog::GetBuildString()
{
  OUString sBuildId(utl::Bootstrap::getBuildIdData(u""_ustr));
  SAL_WARN_IF(sBuildId.isEmpty(), "cui.dialogs", "No BUILDID in bootstrap file");

  return sBuildId;
}

OUString AboutDialog::GetLocaleString(const bool bLocalized) {

  OUString sLocaleStr;

  rtl_Locale *pLocale;
  osl_getProcessLocale(&pLocale);
  if (pLocale && pLocale->Language) {
    if (pLocale->Country && rtl_uString_getLength(pLocale->Country) > 0)
      sLocaleStr = OUString::unacquired(&pLocale->Language) + "_" +
                   OUString::unacquired(&pLocale->Country);
    else
      sLocaleStr = OUString(pLocale->Language);
    if (pLocale->Variant && rtl_uString_getLength(pLocale->Variant) > 0)
      sLocaleStr += OUString(pLocale->Variant);
  }

  sLocaleStr = Application::GetSettings().GetLanguageTag().getBcp47() + " (" +
               sLocaleStr + ")";

  OUString aUILocaleStr =
      Application::GetSettings().GetUILanguageTag().getBcp47();
  OUString sUILocaleStr;
  if (bLocalized)
     sUILocaleStr = CuiResId(RID_CUISTR_ABOUT_UILOCALE);
  else
     sUILocaleStr = Translate::get(RID_CUISTR_ABOUT_UILOCALE, Translate::Create("cui", LanguageTag(u"en-US"_ustr)));

  if (sUILocaleStr.indexOf("$LOCALE") == -1) {
    SAL_WARN("cui.dialogs", "translated uilocale string in translations "
                            "doesn't contain $LOCALE placeholder");
    sUILocaleStr += " $LOCALE";
  }
  sUILocaleStr = sUILocaleStr.replaceAll("$LOCALE", aUILocaleStr);

  return sLocaleStr + "; " + sUILocaleStr;
}

OUString AboutDialog::GetMiscString() {

  OUString sMisc;

  bool const extra = EXTRA_BUILDID[0] != '\0';
  // extracted from the 'if' to avoid Clang -Wunreachable-code
  if (extra) {
    sMisc = EXTRA_BUILDID "\n";
  }

  OUString aCalcMode; // Calc calculation mode

#if HAVE_FEATURE_OPENCL
  if (openclwrapper::GPUEnv::isOpenCLEnabled())
    aCalcMode += " CL";
#endif

  static const bool bThreadingProhibited =
      std::getenv("SC_NO_THREADED_CALCULATION");
  bool bThreadedCalc = officecfg::Office::Calc::Formula::Calculation::
      UseThreadedCalculationForFormulaGroups::get();

  if (!bThreadingProhibited && bThreadedCalc) {
    aCalcMode += " threaded";
  }

  if (officecfg::Office::Calc::Defaults::Sheet::JumboSheets::get())
  {
    aCalcMode += " Jumbo";
  }

  if (aCalcMode.isEmpty())
      aCalcMode = " default";
  sMisc += "Calc:" + aCalcMode;

  return sMisc;
}

OUString AboutDialog::GetCopyrightString() {
  OUString sVendorTextStr(CuiResId(RID_CUISTR_ABOUT_VENDOR));
  OUString aCopyrightString =
      sVendorTextStr + "\n" + CuiResId(RID_CUISTR_ABOUT_COPYRIGHT) + "\n";

  if (utl::ConfigManager::getProductName() == "LibreOffice")
    aCopyrightString += CuiResId(RID_CUISTR_ABOUT_BASED_ON);
  else
    aCopyrightString += CuiResId(RID_CUISTR_ABOUT_DERIVED);

  return aCopyrightString;
}

// special labels to comply with previous version info
// untranslated English for QA
IMPL_LINK_NOARG(AboutDialog, HandleClick, weld::Button &, void) {
  css::uno::Reference<css::datatransfer::clipboard::XClipboard> xClipboard =
      css::datatransfer::clipboard::SystemClipboard::create(
          comphelper::getProcessComponentContext());

  OUString sInfo = "Version: " + m_pVersionLabel->get_label() + "\n" // version
                   "Build ID: " + GetBuildString() + "\n" + // build id
                   Application::GetHWOSConfInfo(0,false) + "\n" // env+UI
                   "Locale: " + GetLocaleString(false) + "\n" + // locale
                   GetMiscString(); // misc

  vcl::unohelper::TextDataObject::CopyStringTo(sInfo, xClipboard);
}
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