<#
.SYNOPSIS
  Usuniecie wszystkich .bak / .preurlencode.bak / .preanchor.bak z FTP serwera i lokalnie.
  Uzywa .NET FtpWebRequest (szybsze + lepsze error handling niz curl).
#>

[CmdletBinding()]
param(
  [string]$LocalDir   = "C:\visual studio code\projekty\cmsPRO\updates",
  [string]$RemoteRoot = "/public_html/updates",
  [string]$FtpHost    = "host117523.hostido.net.pl",
  [string]$FtpUser    = "www@cmspro.project-dc.pl",
  [string]$FtpPass    = "aNDCvhA6cnHSQfM24vUE",
  [switch]$DryRun
)

$ErrorActionPreference = "Continue"
$baks = Get-ChildItem $LocalDir -Recurse -File | Where-Object { $_.Name -like '*.bak' } | Sort-Object FullName

Write-Host "Plikow do skasowania: $($baks.Count)"
if ($DryRun) { Write-Host "DRY-RUN" -ForegroundColor Yellow }

$cred = New-Object System.Net.NetworkCredential($FtpUser, $FtpPass)
$deleted = 0
$notFound = 0
$failed = 0
$failedList = @()
$i = 0

function Delete-Ftp {
  param([string]$RemotePath)
  $url = "ftp://${FtpHost}${RemotePath}"
  $req = [System.Net.FtpWebRequest]::Create($url)
  $req.Method = [System.Net.WebRequestMethods+Ftp]::DeleteFile
  $req.Credentials = $cred
  $req.UsePassive = $true
  $req.UseBinary = $true
  $req.KeepAlive = $false
  $req.Timeout = 30000
  try {
    $resp = $req.GetResponse()
    $resp.Close()
    return @{ ok = $true; status = 'deleted' }
  } catch [System.Net.WebException] {
    $msg = $_.Exception.Message
    if ($msg -match '550' -or $msg -match 'No such file') {
      return @{ ok = $true; status = 'not-found' }
    }
    return @{ ok = $false; status = 'error'; msg = $msg }
  }
}

foreach ($f in $baks) {
  $i++
  $rel = $f.FullName.Substring($LocalDir.Length).TrimStart('\','/').Replace('\','/')
  $remoteFull = "$RemoteRoot/$rel"

  if (($i % 50) -eq 0) {
    Write-Host "  $i / $($baks.Count) ... (deleted=$deleted notFound=$notFound failed=$failed)"
  }

  if ($DryRun) {
    Write-Host "  [DRY] DELE $remoteFull"
    continue
  }

  $r = Delete-Ftp -RemotePath $remoteFull
  if ($r.ok) {
    if ($r.status -eq 'deleted') { $deleted++ } else { $notFound++ }
    Remove-Item -LiteralPath $f.FullName -Force
  } else {
    $failed++
    $failedList += "$rel -- $($r.msg)"
  }
}

Write-Host ""
Write-Host "Zakonczono." -ForegroundColor Green
Write-Host "  Usuniete (FTP+lokal): $deleted"
Write-Host "  Brak na serwerze (lokal usuniete): $notFound"
Write-Host "  Bledy: $failed"
if ($failedList) {
  Write-Host "Pierwsze 10 bledow:"
  $failedList | Select-Object -First 10 | ForEach-Object { Write-Host "  $_" }
  $logPath = "C:\visual studio code\projekty\cmsPRO\.paul\phases\04h-hotfix-https-updates\cleanup-errors.log"
  $failedList | Out-File -FilePath $logPath -Encoding utf8
  Write-Host "Pelny log bledow: $logPath"
}