Empty Folder Remover (Advanced)

# https://pastebin.com/mRhrVdGA
# Check out this pastebin entry for a more simplistic version: https://pastebin.com/fmBzGg2W

$Host.UI.RawUI.WindowTitle = 'Empty Folder Remover (Advanced)'
[System.String]$Target ='C:\'
[System.Boolean]$Silent = $False
[System.Int64]$DirCounter = 0
[System.Int64]$FailCounter = 0
[System.Int64]$SkipCounter = 0
$Log = New-Object System.Collections.ArrayList
$Error.Clear()

# Offer to run script as administrator if current enviroment has no administrator rights

if (!(New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {

    Write-Host -ForegroundColor Yellow 'Enviroment has no administrator rights! Run as administrator?'
    Write-Host '[Y]es / [N]o'

    while (($UserInput = Read-Host)[0] -ne 'y' -and ($UserInput = Read-Host)[0] -ne 'n') {

        Write-Host -ForegroundColor Red ("'{0}' is not a valid input!" -f $UserInput)

    }

    if ($UserInput[0] -eq 'y') {

        Start-Process PowerShell -ArgumentList ('-NoExit & {0}' -f $PSCommandPath) -Verb RunAs
        Stop-Process -Id $PID

    }

} else {

    Write-Host -ForegroundColor Yellow "Enviroment has administrator rights!`n"
    $Log.Add('Enviroment has administrator rights!') > $null

}

# Offer to run script silent (no log on screen and no log output)

Write-Host -ForegroundColor Yellow 'Run silent?'
Write-Host '[Y]es / [N]o'

while (($UserInput = Read-Host)[0] -ne 'y' -and ($UserInput = Read-Host)[0] -ne 'n') {

    Write-Host -ForegroundColor Red ("'{0}' is not a valid input!" -f $UserInput)

}

if ($UserInput[0] -eq 'y') {

    $Silent = $True

}

# Deleting empty directories

Get-ChildItem -LiteralPath $Target -Recurse -Force -Directory -ErrorAction Ignore | ForEach-Object {

    Try {

        Get-ChildItem -LiteralPath $_.FullName -Force -ErrorAction Stop | Select-Object -First 1 > $null

    }

    Catch {

        if (!$Silent) {

            Write-Host -ForegroundColor Red $_.Exception.Message
            $Log.Add($_Exception.Message) > $null

        }
    }

    if (!$Error) {

        if ((Get-ChildItem -LiteralPath $_.FullName -Recurse -Force -File | Select-Object -First 1).Count -eq 0) {

            Try {

                Remove-Item -LiteralPath $_.FullName -Recurse -Force -ErrorAction Stop

            }

            Catch {

                if (!$Silent -and $_.Exception.Message -eq 'You do not have sufficient access rights to perform this operation.') {

                    Write-Host -ForegroundColor Red ("Not sufficient access rights to remove '{0}'!" -f $_.FullName)
                    $Log.Add(("Not sufficient access rights to remove '{0}'!" -f $_.FullName)) > $null

                } elseif (!$Silent) {

                    Write-Host -ForegroundColor Red $_.Exception.Message
                    $Log.Add($_.Exception.Message) > $null

                }
            }

            if (!$Error) {

                $DirCounter++

                if (!$Silent) {

                    Write-Host ("Removed '{0}'" -f $_.FullName)
                    $Log.Add(("Removed '{0}'" -f $_.FullName)) > $null

                }

            } else {

                $FailCounter++

            }
        }

    } else {

        $SkipCounter++

    }

    $Error.Clear()

}

# Summary

Write-Host -ForegroundColor Green ("`nDone!`n`nRemoved {0} empty directories!`n" -f $DirList.Count)
$Log.Add(("`nDone!`n`nRemoved {0} empty directories!`n" -f $DirList.Count)) > $null

if ($SkipCounter -gt 0) {

    Write-Host -ForegroundColor Yellow ("Skipped {0} directories due to access rights!`n" -f $SkipCounter)
    $Log.Add(("Skipped {0} directories due to access rights!`n" -f $SkipCounter)) > $null

}

if ($FailCounter -gt 0) {

    Write-Host -ForegroundColor Yellow ("Failed to delete {0} empty directories!`n" -f $FailCounter)
    $Log.Add(("Failed to delete {0} empty directories!`n" -f $FailCounter)) > $null

}

Write-Host ("Log has been saved to '{0}'" -f ($LogName = (Get-Date -UFormat %Y-%m-%d_%T)))

$Log | Add-Content -LiteralPath ('{0}\Documents\EmptyFolderRemover_Log{1}' -f $Home, $LogName)