param(
    [string]$UserName = "dohertj2",
    [string]$Domain = $env:COMPUTERNAME
)

$securePassword = Read-Host -Prompt "MX RPC password" -AsSecureString
$bstr = [Runtime.InteropServices.Marshal]::SecureStringToBSTR($securePassword)
try {
    $plainPassword = [Runtime.InteropServices.Marshal]::PtrToStringBSTR($bstr)
    [Environment]::SetEnvironmentVariable("MX_RPC_USER", $UserName, "User")
    [Environment]::SetEnvironmentVariable("MX_RPC_DOMAIN", $Domain, "User")
    [Environment]::SetEnvironmentVariable("MX_RPC_PASSWORD", $plainPassword, "User")

    $env:MX_RPC_USER = $UserName
    $env:MX_RPC_DOMAIN = $Domain
    $env:MX_RPC_PASSWORD = $plainPassword

    Write-Host "MX_RPC_USER and MX_RPC_DOMAIN set for user environment and current shell."
    Write-Host "MX_RPC_PASSWORD set for user environment and current shell."
    Write-Host "Start a new Codex/shell session if a child process does not inherit the updated user environment."
}
finally {
    if ($bstr -ne [IntPtr]::Zero) {
        [Runtime.InteropServices.Marshal]::ZeroFreeBSTR($bstr)
    }
}