## [CG] NSIS Options
IF(CPACK_GENERATOR MATCHES "NSIS")
    CONFIGURE_FILE(
        "${CPACK_SOURCE_DIR}/nsis/wads.ini"
        "${CPACK_BINARY_DIR}/_CPack_Packages/win32/NSIS/wads.ini"
    )
    SET(WADS_SRC "${CPACK_SOURCE_DIR}/nsis/wads.ini")
    SET(WADS_DST "${CPACK_BINARY_DIR}/_CPack_Packages/win32/NSIS/wads.ini")
    SET(CPACK_NSIS_COMPRESSOR "/SOLID lzma")
    SET(CPACK_NSIS_MODIFY_PATH ON)
    SET(CPACK_NSIS_DEFINES "
  !system 'cp \"${WADS_SRC}\" \"${WADS_DST}\"'
  ReserveFile \"wads.ini\"
    ")
    SET(CPACK_NSIS_PAGE_COMPONENTS "
  Page custom ShowWADsPage LeaveWADsPage \"Configure WAD Folder\"
  Function ShowWADsPage
    !insertmacro MUI_HEADER_TEXT_PAGE \"Configure WAD Folders\" \"Add an additional WAD search path and download Freedoom\"
    !insertmacro MUI_INSTALLOPTIONS_EXTRACT \"wads.ini\"
    !insertmacro MUI_INSTALLOPTIONS_DISPLAY \"wads.ini\"
  FunctionEnd

  Function LeaveWADsPage
  FunctionEnd
    ")
    SET(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "
  Var /GLOBAL ADDITIONAL_WAD_FOLDER
  Var /GLOBAL DOWNLOAD_FREEDOOM

  !insertmacro MUI_INSTALLOPTIONS_READ $ADDITIONAL_WAD_FOLDER \"wads.ini\" \"Field 2\" \"State\"
  !insertmacro MUI_INSTALLOPTIONS_READ $DOWNLOAD_FREEDOOM \"wads.ini\" \"Field 3\" \"State\"

  WriteRegStr HKCR \"eternity\" \"\" \"Eternity Engine Link\"
  WriteRegStr HKCR \"eternity\" \"URL Protocol\" \"\"
  WriteRegStr HKCR \"eternity\\shell\\open\\command\" \"\" '\"$INSTDIR\\bin\\eternity.bat\" \"%1\"'
  FileOpen $9 \"$INSTDIR\\bin\\eternity.bat\" w
  FileWrite $9 '@echo off'
  FileWrite $9 \"$\\r$\\n\"
  FileWrite $9 'SET DOOMWADPATH=%DOOMWADPATH%;$INSTDIR;$INSTDIR\\bin'
  StrCmp $ADDITIONAL_WAD_FOLDER \"\" +2 0
    FileWrite $9 ';$ADDITIONAL_WAD_FOLDER'
  FileWrite $9 \"$\\r$\\n\"
  StrCmp $ADDITIONAL_WAD_FOLDER \"\" +3 0
    FileWrite $9 'SET DOOMWADDIR=$ADDITIONAL_WAD_FOLDER'
    FileWrite $9 \"$\\r$\\n\"
  FileWrite $9 '@echo on'
  FileWrite $9 \"$\\r$\\n\"
  FileWrite $9 '\"$INSTDIR\\bin\\eternity.exe\" -base \"$INSTDIR\\bin\\base\" -directx -8in32 -nomusic -csjoin \"%1\"'
  FileWrite $9 \"$\\r$\\n\"
  FileWrite $9 'pause'
  FileWrite $9 \"$\\r$\\n\"
  FileClose $9

  IntCmp $DOWNLOAD_FREEDOOM 1 0 doNotDownload doNotDownload
    NSISdl::download http://savannah.nongnu.org/download/freedoom/freedoom-iwad/freedoom-iwad-latest.zip $TEMP\\freedoom-iwad-latest.zip
    Pop $R0
    StrCmp $R0 \"success\" +3
      MessageBox MB_OK \"Download failed: $R0\"
      GOTO doNotExtract
      nsisunz::UnzipToLog /noextractpath \"$TEMP\\freedoom-iwad-latest.zip\" \"$INSTDIR\\bin\\base\\wads\"
      Delete $TEMP\\freedoom-iwad-latest.zip
    doNotExtract:
  doNotDownload:
")
    SET(CPACK_NSIS_EXTRA_UNINSTALL_COMMANDS "
  DeleteRegValue HKCR \"eternity\" \"\"
    ")
ENDIF(CPACK_GENERATOR MATCHES "NSIS")