#Requires -RunAsAdministrator

<#
.Synopsis
   Creates a new Hyper-V instance from a named template.
.DESCRIPTION
   Imports an existing Hyper-V export into a new instance, set-up the local client host/ip resoltution and generate bootstrapping powershell script.
.PARAMETER OSVersion
    The code name for operating system
.PARAMETER VMName
    The name of the new instance
#>
param(
    [Parameter(Mandatory=$true)]
    [string]$OSVersion,
    [Parameter(Mandatory=$true)]
    [string]$VMName
)
$rootPath="C:\Users\Public\Documents\Hyper-V"
$exportPath=Join-Path $rootPath "Exports"

$vmNameToImport="Template-$OSVersion"
$importPath=Join-Path $exportPath $vmNameToImport
$importPath=Join-Path $importPath "Virtual Machines"
$vmcxPathToImport=Get-ChildItem $importPath -Filter "*.vmcx" |Select-Object -ExpandProperty FullName -First 1

if(Get-VM -Name $VMName -ErrorAction SilentlyContinue)
{
    throw "VM with name $VMName already exists"
}

Import-VM -Path $vmcxPathToImport -Copy -GenerateNewId

Rename-VM $vmNameToImport –NewName $VMName
Get-VMHardDiskDrive -VMName $VMName |ForEach-Object {
    $vhd=$_
    $newPath = Join-Path (Split-Path $vhd.Path -Parent) "$vmName.vhdx"

    Rename-Item $vhd.Path $newPath
    Set-VMHardDiskDrive -VMName $vhd.VMName -Path $newPath –ControllerType $vhd.ControllerType –ControllerNumber $vhd.ControllerNumber -ControllerLocation $vhd.ControllerLocation
}


$null=Start-VM -Name $VMName

while((Get-VM -Name $VMName).NetworkAdapters.IPAddresses.Count -eq 0)
{

}
$vmIpAddress = (Get-VM -Name $VMName).NetworkAdapters.IPAddresses[0]

Add-HostEntry -Name $VMName -Address $vmIpAddress -Force

$trustedHostsItem=Get-Item WSMan:\localhost\Client\TrustedHosts | Select-Object -ExpandProperty Value
if($trustedHostsItem.Length -gt 0)
{
    $trustedHosts=$trustedHostsItem -split ','
}
else
{
    $trustedHosts=@()
}

if($trustedHosts -notcontains $VMName)
{
    $trustedHosts+=$vmName
    Set-Item WSMan:\localhost\Client\TrustedHosts -Value ($trustedHosts -join ',') -Force
}

$vmAdministratorCredentials=New-HyperVMAdministratorCredential
$vmAdministratorPassword=$vmAdministratorCredentials |Show-Credential |Select-Object -ExpandProperty Password
$netArgs=@(
    "use"
    "\\$vmName"
    "/user:.\$($vmAdministratorCredentials.Username)"
    "$vmAdministratorPassword"
)

Start-Process -FilePath "net" -ArgumentList $netArgs -Wait -NoNewWindow

$initCommands= @(
    "#Set execution policy to unrestricted"
    "Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Force"
    "#Set timezone"
    "Set-TimeZone -Name 'Central European Standard Time'"
    "#Enable the num lock"
    "Set-ItemProperty -Path 'HKCU:\Control Panel\Keyboard' -Name InitialKeyboardIndicators -Value 2"
    "#Enable powershell remoting"
    "Enable-PSRemoting -Force"
    "#Rename the computer"
    "Rename-Computer -NewName $VMName -Force"
    "#Enable file sharing"
    "Get-NetFirewallRule -DisplayGroup 'File and Printer Sharing*'|Enable-NetFirewallRule"
    "#Restart"
    "Restart-Computer -Force"
    "#Finish"
)

$initCmd=$initCommands -join [System.Environment]::NewLine

Write-Host "From withing the Virtual OS, execute the following Powershell script."
Write-Host $initCmd