rename files to leading zeros recurse current path

rename-leading-zeros.ps1

# rename files recurse to leading 2 digit zeros:
# from "1 - name.mp3" 
# to 01 - name.mp3

$path = Get-Location

$files = Get-ChildItem -Path $path -Filter "*.mp3" -recurse | Sort-Object


foreach ($file in $files) {
    $nameWithoutExtension = [System.IO.Path]::GetFileNameWithoutExtension($file.Name)
    $extension = [System.IO.Path]::GetExtension($file.Name)

    $counter = $nameWithoutExtension -replace '^(\d+).*', '$1'
    $paddedCounter = '{0:d2}' -f [int]$counter

    $nameWithoutDigits = $nameWithoutExtension -replace '^\d+\s*-\s*'

    $newName = "$paddedCounter -  $nameWithoutDigits$extension"
    
    Write-Host "Aktueller Dateiname: $($file.Name)"
    Write-Host "Neuer Dateiname: $newName"

    $newPath = Join-Path -Path $file.DirectoryName -ChildPath $newName
    Rename-Item -Path $file.FullName -NewName $newPath
    #Rename-Item -Path $file.FullName -NewName $newPath -WhatIf

}