$exeFilePath = "${env:INSTALLER_PATH}"

# extract the name of the executable to use as the sub-directory name
$exeName = [System.IO.Path]::GetFileName($exeFilePath)
$subDir = [System.IO.Path]::GetFileNameWithoutExtension($exeFilePath)

$destinationPath = Join-Path -Path $env:ProgramFiles -ChildPath $subDir

# check if the directory does not exist, and create it if necessary
if (-not (Test-Path -Path $destinationPath)) {
    New-Item -ItemType Directory -Path $destinationPath
}

# copy the .exe file to the new sub-directory
$destinationExePath = Join-Path -Path $destinationPath -ChildPath $exeName
Copy-Item -Path $exeFilePath -Destination $destinationExePath