###License Auditor###
###By Matt Derk & vTwindude###

# Set to multiple VC Mode 
if(((Get-PowerCLIConfiguration).DefaultVIServerMode) -ne "Multiple") { 
    Set-PowerCLIConfiguration -DefaultVIServerMode Multiple | Out-Null 
}

#Define VC hosts
$VChosts = @( 
"VMVC01",
"VMVC02"
);

Write-Host "Connecting to VC Server(s)"  
Connect-VIServer -Server $VChosts

#Define variables for license and host functions

$servInst = Get-View ServiceInstance
$licMgr = Get-View $servInst.Content.licenseManager
$licAssignMgr = Get-View $licMgr.licenseAssignmentManager
 

function Get-VMHostId($Name)
{
    $vmhost = Get-VMHost $Name | Get-View
    return $vmhost.Config.Host.Value
}

function Get-License($VMHostId)
{
    $details = @()
    $detail = "" |select LicenseKey,LicenseType,Host,VC,Total,Used,ExpirationDate
    $license = $licAssignMgr.QueryAssignedLicenses($VMHostId)
    $license = $license.GetValue(0)
    $detail.VC = ([Uri]$licAssignMgr.Client.ServiceUrl).Host 
    $detail.Host = $license.EntityDisplayName
    $detail.LicenseKey = $license.AssignedLicense.LicenseKey
    $detail.LicenseType = $license.AssignedLicense.Name
    $detail.Total = $license.AssignedLicense.Total
    $detail.Used = $license.AssignedLicense.Used
    $details += $detail
    return $details
}

# Run Query Against All Hosts

$vmhosts = Get-VMHost
$details = @()
foreach ($vmhost in $vmhosts) {
    $vmhostname = Get-VMHostId $vmhost.name 
    $detail = Get-License $vmhostname
    $details += $detail
}
$details
if(!(Test-Path -Path C:\Temp )){New-Item -ItemType directory -Path C:\Temp}
write-host "output being save to C:\Temp\Host-Licenseinfo.csv"
$details | Export-Csv -NoTypeInformation C:\Temp\Host-Licenseinfo.csv