[cmdletBinding()]
param($outDir)

function Check-isWindowsServer2025 {
  $osname = (get-wmiobject Win32_OperatingSystem).Caption
  if ($osname.Contains("Windows Server 2025")) {
     return $true
  } else {
     return $false
  }
}

function Check-isDomainController {
  If ((Get-WMIObject Win32_ComputerSystem).PartOfDomain) {
  #Domain Member or Domain Controller"
    $domainRole = (get-wmiobject Win32_ComputerSystem).DomainRole
    if ($domainRole -eq 3) {
      return $false
    } elseif ($domainRole -gt 4) { 
      return $true
    }
  } else {
      return $false
  }
}


if (Check-isWindowsServer2025) {
  Write-Verbose "Check-isWindowsServer2025: Windows Server 2025"
} else {
  Write-Verbose "Check-isWindowsServer2025: Unsupported Operating System"
  return 0
  exit
}

if (Check-isDomainController) {
  Write-Verbose "Check-isDomainController: Yes"
} else {
  Write-Verbose "Check-isDomainController: No"
  return 0
  exit
}


if (!(Test-Path(".\Get-KerbEncryptionUsage.ps1"))) {
  # Download script from 
  # https://github.com/microsoft/Kerberos-Crypto/blob/main/Get-KerbEncryptionUsage.ps1
  # to current dir
  Write-Verbose "Test-Path: script not found"
  return $null
  exit
}

return (.\Get-KerbEncryptionUsage.ps1 -Encryption DES).Count