<#
.SYNOPSIS
    Registriert den GerbilManager-Backup als taegliche geplante Aufgabe (03:00 Uhr).

.DESCRIPTION
    Erstellt eine geplante Aufgabe, die Backup-GerbilManager.ps1 taeglich um 03:00 Uhr
    ausfuehrt. Backups werden 7 Tage lang aufbewahrt.

.PARAMETER BackupTime
    Uhrzeit fuer das taeliche Backup. Standard: 03:00

.NOTES
    Erfordert: PowerShell als Administrator ausfuehren
    Aufgabenname: GerbilManager Backup
#>
#Requires -RunAsAdministrator
param(
    [string]$BackupTime = "03:00"
)
Set-StrictMode -Version Latest
$ErrorActionPreference = "Stop"

$taskName   = "GerbilManager Backup"
$scriptPath = Join-Path $PSScriptRoot "Backup-GerbilManager.ps1"
$logPath    = "C:\gerbil-data\backups\backup.log"

if (-not (Test-Path $scriptPath)) {
    Write-Error "Backup-Skript nicht gefunden: $scriptPath"
    exit 1
}

# Backup-Verzeichnis vorab anlegen
New-Item -ItemType Directory -Force -Path "C:\gerbil-data\backups" | Out-Null

Write-Host "Registriere Backup-Aufgabe '$taskName' (taeglich $BackupTime)..."

$action = New-ScheduledTaskAction `
    -Execute "powershell.exe" `
    -Argument "-NonInteractive -WindowStyle Hidden -ExecutionPolicy Bypass -File `"$scriptPath`" >> `"$logPath`" 2>&1"

$trigger = New-ScheduledTaskTrigger -Daily -At $BackupTime

$settings = New-ScheduledTaskSettingsSet `
    -ExecutionTimeLimit (New-TimeSpan -Hours 1) `
    -StartWhenAvailable `
    -WakeToRun `
    -MultipleInstances IgnoreNew

$principal = New-ScheduledTaskPrincipal `
    -UserId $env:USERNAME `
    -LogonType Interactive `
    -RunLevel Highest

Unregister-ScheduledTask -TaskName $taskName -Confirm:$false -ErrorAction SilentlyContinue

Register-ScheduledTask `
    -TaskName $taskName `
    -Action $action `
    -Trigger $trigger `
    -Settings $settings `
    -Principal $principal `
    -Description "Taegiches Backup der GerbilManager-Datenbank und Fotos um $BackupTime Uhr." `
    -Force | Out-Null

Write-Host "Backup-Aufgabe registriert: '$taskName'"
Write-Host "Backups werden taeglich um $BackupTime Uhr nach C:\gerbil-data\backups\ gesichert."
Write-Host "Protokoll: $logPath"
Write-Host ""
Write-Host "Backup jetzt testen: & `"$scriptPath`""