# verifyIPWindows.ps1
# Deploy to: C:\CLISave\AssignIP\verifyIPWindows.ps1 on the vSphere Windows host
#
# Usage: powershell -ExecutionPolicy Bypass -NonInteractive -File verifyIPWindows.ps1 \
#            <vm_id> <ip> <vcenter_host> <vcenter_user> <vcenter_password> <guest_password>
#
# Checks that the IP is configured and not in Duplicate state inside the Windows guest.
# Output: SUCCESS | FAIL  (exactly one line)

param(
    [Parameter(Mandatory=$true)][string]$VmId,
    [Parameter(Mandatory=$true)][string]$Ip,
    [Parameter(Mandatory=$true)][string]$VCenterHost,
    [Parameter(Mandatory=$true)][string]$VCenterUser,
    [Parameter(Mandatory=$true)][string]$VCenterPassword,
    [Parameter(Mandatory=$true)][string]$GuestPassword
)

Set-StrictMode -Version Latest
$ErrorActionPreference = "Stop"

try {
    Import-Module VMware.VimAutomation.Core -ErrorAction Stop
    Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -Confirm:$false | Out-Null
    Set-PowerCLIConfiguration -Scope User -ParticipateInCEIP $false -Confirm:$false | Out-Null

    Connect-VIServer -Server $VCenterHost -User $VCenterUser -Password $VCenterPassword -Force -ErrorAction Stop | Out-Null

    $vm = Get-VM -Id "VirtualMachine-$VmId" -ErrorAction Stop

    # PowerShell snippet run inside the Windows guest
    $guestScript = @"
`$ErrorActionPreference = 'SilentlyContinue'
`$addr = Get-NetIPAddress -IPAddress '$Ip' -ErrorAction SilentlyContinue
if (`$addr -and `$addr.AddressState -ne 'Duplicate' -and `$addr.AddressState -ne 'Invalid') {
    Write-Output 'SUCCESS'
} else {
    Write-Output 'FAIL'
}
"@

    $result = Invoke-VMScript -VM $vm `
        -ScriptText $guestScript `
        -GuestUser "administrator" `
        -GuestPassword $GuestPassword `
        -ScriptType Powershell `
        -ErrorAction Stop

    if ($result.ScriptOutput -match "SUCCESS") {
        Write-Output "SUCCESS"
    } else {
        Write-Output "FAIL"
    }
} catch {
    Write-Output "FAIL"
} finally {
    Disconnect-VIServer -Confirm:$false -ErrorAction SilentlyContinue | Out-Null
}