#!/snap/bin/pwsh

# Prerequisites
Set-PowerCLIConfiguration -Scope User `
                          -ParticipateInCeip $false `
                          -confirm:$false | out-null

# Config section
$vcenter = "vcenter_server"
$user = "vcenter_user"
$password = "vcenter_user_password"

# Connect to vCenter
Set-PowerCLIConfiguration -InvalidCertificateAction ignore `
                          -confirm:$false | out-null
                          
Connect-VIServer -Server $vcenter `
                 -User $user `
                 -Password $password | out-null

# Get snapshots
$results = @()
$vmsnapshots = Get-VM | `
               Where {$_.Name -notmatch ".*replica.*" } | `
               Get-Snapshot

if ($vmsnapshots.Name -ne $null) {
  foreach ($snapshot in $vmsnapshots) {
    $snapevent = Get-VIEvent -Entity $snapshot.VM `
                             -Types Info `
                             -Finish $snapshot.Created `
                             -MaxSamples 1 | `
                             Where-Object {$_.FullFormattedMessage -imatch 'Task: Create virtual machine snapshot'}
                            
    if ($snapevent -ne $null) {
      $user = [string]$snapevent.UserName
      $snapshot | Add-Member CreatedBy $user
    }
    else {
      $snapshot | Add-Member CreatedBy '-- Unknown --'
    }
    $results = $results + $snapshot
  }

  $results = $results | Sort-Object -Property Created
  $results | Format-Table -Property VM, `
                                    CreatedBy, `
                                    @{Label="CreatedOn"; Expression={Get-Date $_.Created -Format "dd.MM.yyyy"}}, `
                                    Name 

}
else {
  Write-Output "  Congratulations, there are no snapshots!" 
}