Scriptd

#region functions
function Invoke-VMCommand {
    param (

        [Parameter(Mandatory = $true)][string]$computername,
        [Parameter(Mandatory = $true)][guid]$VMId,
        [pscredential]$ComputerCred,
        [Parameter(Mandatory = $true)][pscredential]$VMCred,
        [Parameter(Mandatory = $true)][scriptblock]$ScriptBlock

    )
    if ($ComputerCred) {
        $PSDefaultParameterValues = @{
            "Invoke-Command:Credential" = $ComputerCred
        }
    }
    Invoke-Command -ComputerName $computername -ScriptBlock {
        $exeSB = [scriptblock]::Create("$Using:ScriptBlock")
        Invoke-Command -VMId $Using:VMId -Credential $Using:VMCred -ScriptBlock $exeSB
    }
}
#endregion

$vmmserver = "CENSORED"
$ErrorActionPreference = "Stop"
$initm = 1

if ($initm -eq 1) {
    #VM Variabels
    $housevm = Get-SCVirtualMachine | Where-Object -Property VMId -EQ "B9AC40E5-B6DD-49DF-9CFC-2C4A5EFA5DEC"
    $VMId = $housevm.VMId
    $VMStatus = $housevm.Status
    $VMHost = $housevm.HostName
    $VMLocation = $housevm.Location
    $vmdir = $VMLocation -replace "C:", "\\$VMHost\c$"
    $VHDPRESENT = $housevm | Get-SCVirtualDiskDrive


    #VHDX Variabels
    $updvhdxchild = "Win2016-Gen2.vhdx"
    $updvhdxmother = "mothervhd\DK01UPDTEMP01_Win2016-Gen2.vhdx.mother"







    #Trys to stop the VM
    try {
        if ($VMStatus -eq 'Running') {
            Write-Host -ForegroundColor Yellow "[WARNING]: The VM is on... Trying to stop it..."
            Stop-SCVirtualMachine -VM $housevm
        }
    }
    catch {
        Write-Host -ForegroundColor Red "[ERROR]: Cloud not stop VM.  Check VMM for solution"
    }
    #END OF TRY







    #IF VHD IS PRESENT IN VM, IT WILL BE REMOVED
    if ($null -ne $VHDPRESENT) {
        try {
            Write-Host -ForegroundColor Yellow "[WARNING]: Existing HDD DISK Drive, detected - Trying auto-remove before proceeding...`n"
            $VHDPRESENT | Remove-SCVirtualDiskDrive
        }
        catch {
            Throw "Could not remove.  Check VMM for solution"
        }
        Write-Host -ForegroundColor Green "[STATUS]: Successfully removed VirtualDiskDrive...`n"
    }
    #END OF TRY






    #Copies the VHD, from "MOTHER"
    try {
        Write-Host -ForegroundColor Green "[STATUS]: Copying MOTHERVHDX into CHILDVHDX...`n"
        Copy-Item -Path "$vmdir\$updvhdxmother" -Destination "$vmdir\$updvhdxchild"
    }
    catch {
        Throw "Could not copy MOTHER into CHILD. Is the path '$vmdir' correct?"
    }
    #END OF TRY




    #Attaches child disk to VM
    try {
        Write-Host -ForegroundColor Green "[STATUS]: Trying to attach VHDX($upvhdxchild)...`n"
        New-SCVirtualDiskDrive -VMMServer $vmmserver -VM $housevm -SCSI -Bus 0 -LUN 0 -UseLocalVirtualHardDisk -FileName "$updvhdxchild" -Path "$VMLocation" -VolumeType BootAndSystem
    }
    catch {
        Throw "Could not connect disk to VM. Check VMM for a solution OR is the path $vmdir\$upvhdxchild correct?"
    }
    #END OF TRY




    #START VM
    try {
        Write-Host -ForegroundColor Grenn "[STATUS]: Starting the Virtual Machine..."
        Start-SCVirtualMachine -VM $housevm
    }
    catch {
        $poke = Get-SCVirtualMachine | Where-Object -Property VMId -EQ "B9AC40E5-B6DD-49DF-9CFC-2C4A5EFA5DEC"
        $throwstatus = $poke.status
        Throw "Couldnt start the Virtual Machine - status is $throwstatus"
    }



    #Credentials for VM
    $Username = 'Administrator'
    $Password = 'DDDDDDDD'
    $pass = ConvertTo-SecureString -AsPlainText $Password -Force
    $Cred = New-Object System.Management.Automation.PSCredential -ArgumentList $Username, $pass

    do {
        do {
            try {
                Write-Host -ForegroundColor Green "[STATUS]: Checking if any updates are availabe..."
                $Updates = Invoke-VMCommand -computername $VMHost -VMId $VMId -VMCred $Cred -ScriptBlock {
                    Get-WUList
                }
                $failedconn = $null
            }
            catch {
                Write-Host -ForegroundColor Red "[ERROR]: Couldnt connect to the VM... Trying again in a bit"
                $failedconn = 1
                Start-Sleep -Seconds 5 #Less than 10 seconds is ambigous
            }
        }until($null -eq $failedconn)






        if ($null -ne $Updates) {
            Invoke-VMCommand -computername $VMHost -VMId $VMId -VMCred $Cred -ScriptBlock {
                Write-Host -ForegroundColor Yellow "[WARNING]: UPDATES AVAILABLE GOING TO INSTALL..."
                Start-Sleep -Seconds 2
                Write-Host -ForegroundColor Green "[STATUS]: Downloads, and installing updates. LOL"
                Install-WindowsUpdate -Download -Install -AcceptAll -AutoReboot
            }
        }
    }until($null -eq $Updates)

    Write-Host -BackgroundColor DarkGreen -ForegroundColor Yellow "LOOKS LIKE UPDATE IS COMPLETE"
}