$source = "C:\Users\User\Videos\4K Video Downloader" 	# Startordner
$destination = "H:"					# zielordner.
$logFile = "F:\sync-log.txt"				# Protokollverzeichnis ( muss immer \sync-log.txt sein das ist der name der datei. 
$intervall = 30 * 60 # 30 Minuten

$categories = @{
    "Bilder"    = @("jpg","jpeg","png","gif","bmp","webp","tiff")
    "Videos"    = @("mp4","mkv","avi","mov","wmv","flv")
    "Audio"     = @("mp3","wav","flac","aac","m4a","ogg")
    "Dokumente" = @("pdf","doc","docx","xls","xlsx","ppt","pptx","txt","odt")
    "Archive"   = @("zip","rar","7z","tar","gz")
    "Programme" = @("exe","msi","bat")
    "Sonstiges" = @()
}

function Get-Category($ext) {
    foreach ($cat in $categories.Keys) {
        if ($categories[$cat] -contains $ext) { return $cat }
    }
    return "Sonstiges"
}

while ($true) {
    try {
        Write-Host "$(Get-Date -Format 'HH:mm:ss') - Starte Kopieren und Sortieren..."

        $allFiles = Get-ChildItem -Path $source -File -Recurse
        foreach ($file in $allFiles) {
            $ext = $file.Extension.TrimStart('.').ToLower()
            if ([string]::IsNullOrEmpty($ext)) { $ext = "Sonstiges" }

            $category = Get-Category $ext
            $targetFolder = Join-Path -Path $destination -ChildPath $category
            if (-not (Test-Path $targetFolder)) { New-Item -Path $targetFolder -ItemType Directory | Out-Null }

            $targetFile = Join-Path $targetFolder $file.Name

            try {
                # Kopieren nur, wenn die Datei nicht existiert oder sich geändert hat
                if (-not (Test-Path $targetFile) -or ($file.LastWriteTime -gt (Get-Item $targetFile).LastWriteTime)) {
                    Copy-Item -Path $file.FullName -Destination $targetFile -Force
                    Add-Content -Path $logFile -Value "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') - Kopiert: $($file.FullName) -> $targetFile"
                }
            }
            catch {
                Add-Content -Path $logFile -Value "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') - Fehler beim Kopieren: $($file.FullName) - $_"
            }
        }

        Write-Host "$(Get-Date -Format 'HH:mm:ss') - Vorgang abgeschlossen."
    }
    catch {
        Add-Content -Path $logFile -Value "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') - Allgemeiner Fehler: $_"
    }

    Write-Host "$(Get-Date -Format 'HH:mm:ss') - Warte $($intervall/60) Minuten bis zum nächsten Durchlauf..."
    Start-Sleep -Seconds $intervall
}