@echo off

rem set path
set path=%~dp0texmf\miktex\bin;%path%

rem test whether a lock entry exists in the Registry
reg query HKCU\Software\TeX-portable 2>nul 1>nul && (
  echo <b>%~nx0' can be run only once per session, run `reset.bat' first!
  echo.
  pause
  exit
)

cls
echo Please wait...

rem set version numbers
call "%~dp0versions.bat"

rem add lock entry to the Registry
reg add HKCU\Software\TeX-portable /f 2>nul 1>nul

rem create folder context menu item for opening a DOS command line
reg add "HKCU\Software\Classes\Folder\shell\ZCmdHere" /ve /t REG_SZ /d "Command Prompt Here" /f 1>nul 2>nul
reg add "HKCU\Software\Classes\Folder\shell\ZCmdHere\command" /ve /t REG_SZ /d "\"%~dp0cmd.bat\" \"%%1\"" /f 1>nul 2>nul

rem create file context menu item for opening a DOS command line
reg add "HKCU\Software\Classes\*\shell\ZCmdHere" /ve /t REG_SZ /d "Command Prompt Here" /f 1>nul 2>nul
reg add "HKCU\Software\Classes\*\shell\ZCmdHere\command" /ve /t REG_SZ /d "\"%~dp0cmd.bat\" \"%%1\"" /f 1>nul 2>nul

rem backup existing .dvi entry
reg query HKCU\Software\Classes\.dvi 2>nul 1>nul && (
  reg copy HKCU\Software\Classes\.dvi HKCU\Software\Classes\.dvi.bak /f /s 2>nul 1>nul
)

rem create new (private) file association for .dvi
reg add HKCU\Software\Classes\.dvi /ve /d "my_dvifile" /f 2>nul 1>nul
reg add HKCU\Software\Classes\my_dvifile\shell\open\command /ve /d "\"%~dp0texmf\miktex\bin\yap.exe\" \"%%1\"" /f 2>nul 1>nul
reg add HKCU\Software\Classes\my_dvifile\DefaultIcon /ve /d "\"%~dp0texmf\miktex\bin\yap.exe\"" /f 2>nul 1>nul

rem backup existing .ps/.eps entries
reg query HKCU\Software\Classes\.ps 1>nul 2>nul && (
  reg copy HKCU\Software\Classes\.ps HKCU\Software\Classes\.ps.bak /s /f 2>nul 1>nul
)
reg query HKCU\Software\Classes\.eps 1>nul 2>nul && (
  reg copy HKCU\Software\Classes\.eps HKCU\Software\Classes\.eps.bak /s /f 2>nul 1>nul
)

rem create new (private) file associations for .ps/.eps
reg add HKCU\Software\Classes\.ps /ve /d "my_psfile" /f 2>nul 1>nul
reg add HKCU\Software\Classes\.eps /ve /d "my_psfile" /f 2>nul 1>nul
reg add HKCU\Software\Classes\my_psfile\shell\open\command /ve /d "\"%~dp0Ghostgum\gsview\gsview32.exe\" \"%%1\"" /f 2>nul 1>nul
reg add HKCU\Software\Classes\my_psfile\DefaultIcon /ve /d "\"%~dp0Ghostgum\gsview\gsview32.ico\"" /f 2>nul 1>nul

rem backup existing gsview32.ini file in the %USERPROFILE% directory
if exist "%USERPROFILE%\gsview32.ini" (
  del "%USERPROFILE%\gsview32.ini.bak" 1>nul 2>nul
  ren "%USERPROFILE%\gsview32.ini" gsview32.ini.bak 1>nul 2>nul
)

rem write gsview32.ini file on USB drive
echo [GSview-%GSVIEW_VERSION%]> "%~dp0Ghostgum\gsview\gsview32.ini"
echo Configured=1 >> "%~dp0Ghostgum\gsview\gsview32.ini"
echo Version=%GSVIEW_VERSION%>> "%~dp0Ghostgum\gsview\gsview32.ini"
echo GhostscriptDLL=%~dp0gs\gs%GS_VERSION%\bin\gsdll32.dll>> "%~dp0Ghostgum\gsview\gsview32.ini"
echo GhostscriptEXE=%~dp0gs\gs%GS_VERSION%\bin\gswin32c.exe>> "%~dp0Ghostgum\gsview\gsview32.ini"
echo GhostscriptInclude=%~dp0gs\gs%GS_VERSION%\lib;%~dp0gs\fonts;%~dp0gs\gs%GS_VERSION%\Resource>> "%~dp0Ghostgum\gsview\gsview32.ini"
echo GhostscriptOther=-dNOPLATFONTS -sFONTPATH="c:\psfonts">> "%~dp0Ghostgum\gsview\gsview32.ini"
echo. >> "%~dp0Ghostgum\gsview\gsview32.ini"

rem append GSview settings from last session
if exist "%~dp0.gsview32.ini" (
  type "%~dp0.gsview32.ini" >> "%~dp0Ghostgum\gsview\gsview32.ini"
)

rem backup existing MiKTeX settings for later restore
reg query HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION% 1>nul 2>nul && (
  reg copy HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION% HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION%.bak /s /f 1>nul 2>nul
)
reg query HKLM\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION% 1>nul 2>nul && (
  reg copy HKLM\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION% HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION%.bak /s /f 1>nul 2>nul
)

rem load MiKTeX settings from previous session
if exist "%~dp0.MiKTeX.reg" (
  reg import "%~dp0.MiKTeX.reg" 1>nul 2>nul
)

rem on startup, don't let Yap check whether it is the default viewer (this breaks the .dvi file association)
reg add HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION%\Yap\Settings /v "Check Associations" /d 0 /t REG_DWORD /f 1>nul 2>nul

rem initialize MiKTeX
reg add HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION%\Core /v "Install" /d "%~dp0texmf" /t REG_SZ /f 1>nul 2>nul
reg add HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION%\Core /v "Roots" /d "%~dp0localtexmf;%~dp0texmf" /t REG_SZ /f 1>nul 2>nul
reg add HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION%\Core /v "UserData" /d "%~dp0.userdata" /t REG_SZ /f 1>nul 2>nul
reg add HKCU\Software\MiKTeX.org\MiKTeX\%MIKTEX_VERSION%\Core /v "UserConfig" /d "%~dp0.userconfig" /t REG_SZ /f 1>nul 2>nul
initexmf.exe --verbose --dump --mklinks
initexmf.exe --verbose --mkmaps
initexmf.exe --verbose --update-fndb

cls
echo.
echo The portable MiKTeX/GS/GSview installation is now ready for use!
echo.
echo *********************************************************************
echo ** IMPORTANT: Don't forget to run <b>reset.bat' before disconnecting **
echo **            the USB drive!                                       **
echo *********************************************************************
echo.
pause