//---------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include <SysUtils.hpp>
//---------------------------------------------------------------------
#include <VCLCommon.h>
#include <Common.h>
#include <Tools.h>
#include <GUITools.h>
#include <CoreMain.h>
#include <PuttyTools.h>
#include "WinInterface.h"
#include "About.h"
#include "TextsCore.h"
#include "TextsWin.h"
#ifndef NO_COMPONENTS
// must be included before WebBrowserEx.hpp to avoid ambiguity of tagLOGFONTW
#include <TB2Version.hpp>
#include <TBX.hpp>
#endif
#include <JclBase.hpp>
#include <JclDebug.hpp>
#include <WebBrowserEx.hpp>
#include <StrUtils.hpp>
#include <Dialogs.hpp>
#include <FtpFileSystem.h>
#include <S3FileSystem.h>
//---------------------------------------------------------------------
#pragma link "SHDocVw_OCX"
#pragma resource "*.dfm"
//---------------------------------------------------------------------------
static void __fastcall DoAboutDialog(TConfiguration * Configuration,
  bool AllowLicense, TRegistration * Registration, bool LoadThirdParty)
{
  TAboutDialog * AboutDialog = NULL;
  try
  {
    AboutDialog = new TAboutDialog(Application, Configuration, AllowLicense,
      Registration, LoadThirdParty);
    AboutDialog->ShowModal();
  }
  __finally
  {
    delete AboutDialog;
  }
}
//---------------------------------------------------------------------------
void __fastcall DoAboutDialog(TConfiguration * Configuration,
  bool AllowLicense, TRegistration * Registration)
{
  try
  {
    DoAboutDialog(Configuration, AllowLicense, Registration, true);
  }
  catch (EOleException & E)
  {
    // This happens particularly on Wine that does not support some
    // functionality of embedded IE we need.
    DoAboutDialog(Configuration, AllowLicense, Registration, false);
  }
}
//---------------------------------------------------------------------------
__fastcall TAboutDialog::TAboutDialog(TComponent * AOwner,
  TConfiguration * Configuration, bool AllowLicense, TRegistration * Registration,
  bool ALoadThirdParty)
  : TForm(AOwner)
{
  FConfiguration = Configuration;
  UseSystemSettings(this);
  LinkLabel(HomepageLabel, LoadStr(HOMEPAGE_URL));
  LinkLabel(ForumUrlLabel, LoadStr(FORUM_URL));

  ApplicationLabel->Caption = AppName;
  TColor MainInstructionColor;
  HFONT MainInstructionFont;
  HFONT InstructionFont;
  GetInstrutionsTheme(MainInstructionColor, MainInstructionFont, InstructionFont);
  if (MainInstructionFont != 0)
  {
    int PrevHeight = ApplicationLabel->Height;
    ApplicationLabel->Font->Handle = MainInstructionFont;
    if (MainInstructionColor != Graphics::clNone)
    {
      ApplicationLabel->Font->Color = MainInstructionColor;
    }
    ShiftControls(ApplicationLabel->Top + 1, (ApplicationLabel->Height - PrevHeight));
  }
  else
  {
    ApplicationLabel->ParentFont = true;
    ApplicationLabel->Font->Style = ApplicationLabel->Font->Style << fsBold;
  }

  WinSCPCopyrightLabel->Caption = LoadStr(WINSCP_COPYRIGHT);

  if (Registration == NULL)
  {
    RegistrationLabel->Visible = false;
    RegistrationBox->Visible = false;
    ShiftControls(RegistrationLabel->Top, (RegistrationBox->Top - ThirdPartyPanel->Top));
  }
  else
  {
    RegistrationSubjectLabel->Caption = Registration->Subject;
    if (Registration->Registered)
    {
      UnicodeString Text;
      Text = FORMAT(LoadStrPart(ABOUT_REGISTRATION_LICENSES, 1),
        (Registration->Licenses >= 0 ? IntToStr(Registration->Licenses) :
          UnicodeString(LoadStrPart(ABOUT_REGISTRATION_LICENSES, 2))));
      if (!Registration->NeverExpires)
      {
        Text = FMTLOAD(ABOUT_REGISTRATION_EXPIRES,
          (Text, FormatDateTime(L"ddddd", Registration->Expiration)));
      }
      RegistrationLicensesLabel->Caption = Text;
      Text = FMTLOAD(ABOUT_REGISTRATION_PRODUCTID, (Registration->ProductId));
      if (Registration->EduLicense)
      {
        Text = FMTLOAD(ABOUT_REGISTRATION_EDULICENSE, (Text));
      }
      RegistrationProductIdLabel->Caption = Text;
      RegistrationProductIdLabel->Font->Style =
        RegistrationProductIdLabel->Font->Style << fsBold;
    }
    else
    {
      RegistrationLicensesLabel->Visible = false;
      FOnRegistrationLink = Registration->OnRegistrationLink;
      RegistrationProductIdLabel->Caption = LoadStr(ABOUT_REGISTRATION_LINK);
      LinkLabel(RegistrationProductIdLabel, L"");
    }
  }

  LicenseButton->Visible = AllowLicense;

  LoadData();
  if (ALoadThirdParty)
  {
    LoadThirdParty();
  }
  else
  {
    CreateLabelPanel(ThirdPartyPanel, LoadStr(MESSAGE_DISPLAY_ERROR));
  }

  int IconSize = ScaleByPixelsPerInch(48, this);
  FIconHandle = (HICON)LoadImage(MainInstance, L"MAINICON", IMAGE_ICON, IconSize, IconSize, 0);
  IconPaintBox->Width = IconSize;
  IconPaintBox->Height = IconSize;
}
//---------------------------------------------------------------------------
__fastcall TAboutDialog::~TAboutDialog()
{
  DestroyIcon(FIconHandle);
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::ShiftControls(int From, int Diff)
{
  for (int Index = 0; Index < Panel->ControlCount; Index++)
  {
    if (Panel->Controls[Index]->Top > From)
    {
      Panel->Controls[Index]->Top = Panel->Controls[Index]->Top + Diff;
    }
  }
  ClientHeight = ClientHeight + Diff;
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::LoadData()
{
  UnicodeString Version = FConfiguration->VersionStr;
  if (!FConfiguration->ProductName.IsEmpty() &&
      (FConfiguration->Version != FConfiguration->ProductVersion))
  {
    Version = FMTLOAD(ABOUT_BASED_ON_PRODUCT,
      (Version, FConfiguration->ProductName, FConfiguration->ProductVersion));
  }
  VersionLabel->Caption = Version;
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::LoadThirdParty()
{
  FThirdPartyWebBrowser = CreateBrowserViewer(ThirdPartyPanel, L"");

  reinterpret_cast<TLabel *>(FThirdPartyWebBrowser)->Color = ThirdPartyPanel->Color;

  ReadyBrowserForStreaming(FThirdPartyWebBrowser);
  DoLoadThirdParty();
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::DoLoadThirdParty()
{
  WaitBrowserToIdle(FThirdPartyWebBrowser);

  UnicodeString ThirdParty;
  UnicodeString Br = "<br/>\n";

  if (!GUIConfiguration->UsingInternalTranslation())
  {
    UnicodeString TranslatorUrl = LoadStr(TRANSLATOR_URL);
    UnicodeString TranslatorInfo = LoadStr(TRANSLATOR_INFO2);

    wchar_t LocaleNameStr[255];
    GetLocaleInfo(
      GUIConfiguration->AppliedLocale, LOCALE_SLOCALIZEDLANGUAGENAME,
      LocaleNameStr, LENOF(LocaleNameStr));
    UnicodeString LocaleName(LocaleNameStr);

    // The {language} should be present only if we are using an untranslated
    // (=english) string
    UnicodeString TranslationHeader = ReplaceStr(LoadStr(ABOUT_TRANSLATIONS_HEADER), L"{language}", LocaleName);

    AddPara(ThirdParty,
      TranslationHeader + Br +
      FMTLOAD(ABOUT_TRANSLATIONS_COPYRIGHT, (GUIConfiguration->AppliedLocaleCopyright())) + Br +
      (!TranslatorInfo.IsEmpty() ? TranslatorInfo + Br : UnicodeString()) +
      (!TranslatorUrl.IsEmpty() ? CreateLink(TranslatorUrl) : UnicodeString()));
  }

  AddPara(ThirdParty, LoadStr(ABOUT_THIRDPARTY_HEADER));

  AddPara(ThirdParty,
    FMTLOAD(PUTTY_BASED_ON, (GetPuTTYVersion())) + Br +
    LoadStr(PUTTY_COPYRIGHT) + Br +
    CreateLink(LoadStr(PUTTY_LICENSE_URL), LoadStr(ABOUT_THIRDPARTY_LICENSE)) + Br +
    CreateLink(LoadStr(PUTTY_URL)));

  UnicodeString OpenSSLVersionText = GetOpenSSLVersionText();
  CutToChar(OpenSSLVersionText, L' ', true); // "OpenSSL"
  UnicodeString OpenSSLVersion = CutToChar(OpenSSLVersionText, L' ', true);
  CutToChar(OpenSSLVersionText, L' ', true); // day
  CutToChar(OpenSSLVersionText, L' ', true); // month
  UnicodeString OpenSSLYear = CutToChar(OpenSSLVersionText, L' ', true);

  AddPara(ThirdParty,
    FMTLOAD(OPENSSL_BASED_ON, (OpenSSLVersion)) + Br +
    FMTLOAD(OPENSSL_COPYRIGHT2, (OpenSSLYear)) + Br +
    CreateLink(LoadStr(OPENSSL_URL)));

  AddPara(ThirdParty,
    LoadStr(FILEZILLA_BASED_ON2) + Br +
    LoadStr(FILEZILLA_COPYRIGHT2) + Br +
    CreateLink(LoadStr(FILEZILLA_URL)));

  AddPara(ThirdParty,
    FMTLOAD(NEON_BASED_ON2, (NeonVersion())) + Br +
    LoadStr(NEON_COPYRIGHT) + Br +
    CreateLink(LoadStr(NEON_URL)));

  AddPara(ThirdParty,
    FMTLOAD(S3_BASED_ON, (S3LibVersion())) + Br +
    LoadStr(S3_COPYRIGHT) + Br +
    CreateLink(LoadStr(S3_LICENSE_URL), LoadStr(ABOUT_THIRDPARTY_LICENSE)) + Br +
    CreateLink(LoadStr(S3_URL)));

  #define EXPAT_LICENSE_URL L"license:expat"

  AddPara(ThirdParty,
    FMTLOAD(EXPAT_BASED_ON, (ExpatVersion())) + Br +
    CreateLink(EXPAT_LICENSE_URL, LoadStr(ABOUT_THIRDPARTY_LICENSE)) + Br +
    CreateLink(LoadStr(EXPAT_URL)));

  AddBrowserLinkHandler(FThirdPartyWebBrowser, EXPAT_LICENSE_URL, ExpatLicenceHandler);

#ifndef NO_COMPONENTS

  AddPara(ThirdParty,
    FMTLOAD(ABOUT_TOOLBAR2000, (Toolbar2000Version)) + Br +
    LoadStr(ABOUT_TOOLBAR2000_COPYRIGHT) + Br +
    CreateLink(LoadStr(ABOUT_TOOLBAR2000_URL)));

  AddPara(ThirdParty,
    FMTLOAD(ABOUT_TBX, (TBXVersionString)) + Br +
    LoadStr(ABOUT_TBX_COPYRIGHT) + Br +
    CreateLink(LoadStr(ABOUT_TBX_URL)));

  AddPara(ThirdParty,
    LoadStr(ABOUT_FILEMANAGER) + Br +
    LoadStr(ABOUT_FILEMANAGER_COPYRIGHT));

#endif

  UnicodeString JclVersion =
    FormatVersion(JclVersionMajor, JclVersionMinor, JclVersionRelease);
  AddPara(ThirdParty,
    FMTLOAD(ABOUT_JCL, (JclVersion)) + Br +
    CreateLink(LoadStr(ABOUT_JCL_URL)));

  AddPara(ThirdParty,
    LoadStr(ABOUT_PNG) + Br +
    LoadStr(ABOUT_PNG_COPYRIGHT) + Br +
    CreateLink(LoadStr(ABOUT_PNG_URL)));

  std::unique_ptr<TFont> DefaultFont(new TFont());
  DefaultFont->Assign(Application->DefaultFont);
  DefaultFont->Height = ScaleByPixelsPerInchFromSystem(DefaultFont->Height, this);

  ThirdParty = GenerateAppHtmlPage(DefaultFont.get(), ThirdPartyPanel, ThirdParty, false);

  LoadBrowserDocument(FThirdPartyWebBrowser, ThirdParty);
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::AddPara(UnicodeString & Text, const UnicodeString & S)
{
  Text += L"<p>" + S + L"</p>\n";
}
//---------------------------------------------------------------------------
UnicodeString __fastcall TAboutDialog::CreateLink(const UnicodeString & URL, const UnicodeString & Title)
{
  return FORMAT(L"<a href=\"%s\">%s</a>", (URL, Title.IsEmpty() ? URL : Title));
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::LicenseButtonClick(TObject * /*Sender*/)
{
  DoProductLicense();
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::HelpButtonClick(TObject * /*Sender*/)
{
  FormHelp(this);
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::RegistrationProductIdLabelClick(
  TObject * /*Sender*/)
{
  if (FOnRegistrationLink != NULL)
  {
    FOnRegistrationLink(this);
  }
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::OKButtonMouseDown(TObject * /*Sender*/,
  TMouseButton Button, TShiftState Shift, int /*X*/, int /*Y*/)
{
  if (Button == mbRight)
  {
    if (Shift.Contains(ssAlt))
    {
      AccessViolationTest();
    }
    else if (Shift.Contains(ssCtrl))
    {
      LookupAddress();
    }
  }
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::LookupAddress()
{
  UnicodeString S;
  if (InputQuery(L"Address lookup", L"&Address:", S))
  {
    void * Address = reinterpret_cast<void *>(StrToInt(L"$" + S));
    ShowMessage(GetLocationInfoStr(Address, true, true, true, true));
  }
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::AccessViolationTest()
{
  try
  {
    ACCESS_VIOLATION_TEST;
  }
  catch (Exception & E)
  {
    throw ExtException(&E, MainInstructions(L"Internal error test."));
  }
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::ExpatLicenceHandler(TObject * /*Sender*/)
{
  DoLicenseDialog(lcExpat);
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::IconPaintBoxPaint(TObject * /*Sender*/)
{
  DrawIconEx(IconPaintBox->Canvas->Handle,
    0, 0, FIconHandle, IconPaintBox->Width, IconPaintBox->Height, 0, NULL, DI_NORMAL);
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::Dispatch(void * Message)
{
  TMessage * M = reinterpret_cast<TMessage*>(Message);
  if (M->Msg == CM_DPICHANGED)
  {
    if (FThirdPartyWebBrowser != NULL)
    {
      DoLoadThirdParty();
    }
    TForm::Dispatch(Message);
  }
  else
  {
    TForm::Dispatch(Message);
  }
}
//---------------------------------------------------------------------------
void __fastcall TAboutDialog::FormKeyDown(TObject *, WORD & Key, TShiftState Shift)
{
  if ((Key == L'C') && Shift.Contains(ssCtrl))
  {
    if ((FThirdPartyWebBrowser != NULL) &&
        FThirdPartyWebBrowser->Focused() &&
        (FThirdPartyWebBrowser->SelLength() > 0))
    {
      // Let the browser handle the Ctrl+C
    }
    else
    {
      UnicodeString Text =
        ApplicationLabel->Caption + sLineBreak +
        VersionLabel->Caption + sLineBreak +
        sLineBreak +
        WinSCPCopyrightLabel->Caption + sLineBreak +
        HomepageLabel->Caption + sLineBreak +
        sLineBreak +
        ProductSpecificMessageLabel->Caption + sLineBreak +
        ForumUrlLabel->Caption + sLineBreak;

      UnicodeString ThirdPartyText;
      if ((FThirdPartyWebBrowser != NULL) &&
          CopyTextFromBrowser(FThirdPartyWebBrowser, ThirdPartyText))
      {
        Text +=
          sLineBreak +
          GetDividerLine() + sLineBreak +
          Label3->Caption + sLineBreak +
          ThirdPartyText + sLineBreak;
      }

      TInstantOperationVisualizer Visualizer;
      CopyToClipboard(Text);
      Key = 0;
    }
  }
}
//---------------------------------------------------------------------------