# assignIPWindows.ps1
param(
    [Parameter(Mandatory=$true)][string]$VmId,
    [Parameter(Mandatory=$true)][string]$Ip,
    [Parameter(Mandatory=$true)][string]$Gateway,
    [Parameter(Mandatory=$true)][string]$Cidr,
    [Parameter(Mandatory=$true)][string]$VCenterHost,
    [Parameter(Mandatory=$true)][string]$VCenterUser,
    [Parameter(Mandatory=$true)][string]$VCenterPassword,
    [Parameter(Mandatory=$true)][string]$GuestPassword
)

$guestScript = @"
`$ErrorActionPreference = 'Stop'
try {
    `$adapter = Get-NetAdapter | Where-Object { `$_.Status -eq 'Up' -and `$_.InterfaceDescription -notlike '*Loopback*' } | Sort-Object InterfaceIndex | Select-Object -First 1
    if (-not `$adapter) { throw 'No active network adapter found' }
    Get-NetIPAddress -InterfaceIndex `$adapter.InterfaceIndex -AddressFamily IPv4 -ErrorAction SilentlyContinue | Remove-NetIPAddress -Confirm:`$false -ErrorAction SilentlyContinue
    Get-NetRoute -InterfaceIndex `$adapter.InterfaceIndex -AddressFamily IPv4 -ErrorAction SilentlyContinue | Remove-NetRoute -Confirm:`$false -ErrorAction SilentlyContinue
    New-NetIPAddress -InterfaceIndex `$adapter.InterfaceIndex -IPAddress '$Ip' -PrefixLength $Cidr -DefaultGateway '$Gateway' -ErrorAction Stop | Out-Null
    Write-Output 'SUCCESS'
}
catch {
    Write-Output "FAIL: `$(`$PSItem.Exception.Message)"
}
"@

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
    $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
}