@echo off
:: Techniverse Fernwartung - Online Version
:: Laedt RustDesk direkt von GitHub, konfiguriert den Server und startet
:: Der Nutzer braucht NUR diese eine Datei.
title Techniverse Fernwartung - Online
chcp 65001 >nul 2>&1

set "PS1=%TEMP%\techniverse-starter.ps1"

:: PS1 aus dem eingebetteten Block extrahieren (alles zwischen BEGIN_PS1 und END_PS1)
setlocal
set "FOUND="
(for /f "usebackq delims=" %%a in ("%~f0") do (
    if defined FOUND (
        if "%%a"==":: END_PS1" (goto :run_ps1)
        echo(%%a
    )
    if "%%a"==":: BEGIN_PS1" set "FOUND=1"
)) > "%PS1%"

:run_ps1
endlocal
powershell.exe -NoProfile -ExecutionPolicy Bypass -File "%PS1%"
del "%PS1%" >nul 2>&1
exit /b

:: BEGIN_PS1
$ErrorActionPreference = 'Stop'
$Host.UI.RawUI.WindowTitle = 'Techniverse Fernwartung'

# ========================== KONFIGURATION ===========================
# Server-Adresse (Rendezvous + Relay)
$srv = 'fernwartung.techniverse.net'
# Oeffentlicher Schluessel des Servers
$key = 'uE3lJCcnk21qN0VUdqtwJG6QAnpahdB5b2gVe40oMbU='
# API-Server (optional) - Nur setzen wenn ein eigener API-Server vorhanden ist
# Beispiel: $api = 'api.beispiel.de'
$api = ''
# ====================================================================

$tmp = Join-Path $env:TEMP 'techniverse-fernwartung'
$cfgDir = Join-Path $env:APPDATA 'RustDesk\config'
$cfg2 = Join-Path $cfgDir 'RustDesk2.toml'
$cfg2Bak = Join-Path $cfgDir 'RustDesk2.toml.techniverse-bak'
$installDir = Join-Path $env:LOCALAPPDATA 'rustdesk'
$hadBackup = $false

try {
    Write-Host ''
    Write-Host '  ==============================================' -F DarkCyan
    Write-Host '        Techniverse Fernwartung (Online)' -F DarkCyan
    Write-Host '  ==============================================' -F DarkCyan
    Write-Host ''

    Get-Process rustdesk* -EA 0 | Stop-Process -Force -EA 0
    Start-Sleep 2

    New-Item -ItemType Directory $tmp -Force | Out-Null
    $exe = Join-Path $tmp 'rustdesk.exe'

    Write-Host "  [1/4] Ermittle aktuelle RustDesk-Version..." -F White
    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
    $ProgressPreference = 'SilentlyContinue'
    $rel = Invoke-RestMethod -Uri 'https://api.github.com/repos/rustdesk/rustdesk/releases/latest' -UseBasicParsing
    $ver = $rel.tag_name -replace '^v',''
    $asset = $rel.assets | Where-Object { $_.name -like 'rustdesk-*-x86_64.exe' } | Select-Object -First 1
    if (-not $asset) { throw 'Kein passender Download fuer x86_64 im neuesten Release gefunden.' }
    $url = $asset.browser_download_url
    Write-Host "         Aktuelle Version: $ver" -F DarkGray
    Write-Host "         $url" -F DarkGray
    Write-Host '         (Das kann einen Moment dauern...)' -F DarkGray
    Invoke-WebRequest -Uri $url -OutFile $exe -UseBasicParsing
    $ProgressPreference = 'Continue'
    if (-not (Test-Path $exe)) { throw 'Download fehlgeschlagen' }
    $mb = [math]::Round((Get-Item $exe).Length/1MB,1)
    Write-Host "         Heruntergeladen: $mb MB" -F DarkGray

    Write-Host '  [2/4] Sichere bestehende Konfiguration...' -F White
    New-Item -ItemType Directory $cfgDir -Force | Out-Null
    if (Test-Path $cfg2) {
        Copy-Item $cfg2 $cfg2Bak -Force
        $hadBackup = $true
        Write-Host '         Backup erstellt.' -F DarkGray
    } else {
        Write-Host '         Keine bestehende Konfiguration.' -F DarkGray
    }

    Write-Host '  [3/4] Konfiguriere Server...' -F White
    $toml = @"
rendezvous_server = "$srv"
nat_type = 1
serial = 0

[options]
custom-rendezvous-server = "$srv"
relay-server = "$srv"
key = "$key"
"@
    if ($api) { $toml += "`napi-server = `"$api`"" }
    Set-Content -Path $cfg2 -Value $toml -Encoding UTF8

    Write-Host '  [4/4] Starte RustDesk...' -F White
    Start-Process $exe
    Write-Host '         Warte auf Start...' -F DarkGray
    Start-Sleep 8
    if (-not (Get-Process rustdesk* -EA 0)) { throw 'RustDesk konnte nicht gestartet werden.' }

    Write-Host ''
    Write-Host '  ==============================================' -F DarkCyan
    Write-Host '   RustDesk laeuft.' -F White
    Write-Host '   Teile deine ID mit dem Techniverse-Support.' -F White
    Write-Host ''
    Write-Host '   Schliesse RustDesk um die Sitzung zu beenden.' -F DarkYellow
    Write-Host '   Dieses Fenster NICHT schliessen.' -F Red
    Write-Host '  ==============================================' -F DarkCyan
    Write-Host ''
    Write-Host '  !! ACHTUNG - BETRUGSWARNUNG !!' -F Red
    Write-Host '  Teile deine ID und dein Einmalpasswort' -F DarkYellow
    Write-Host '  NUR mit Personen, denen du vertraust!' -F DarkYellow
    Write-Host '  RustDesk wird haeufig fuer Betrug missbraucht.' -F DarkYellow
    Write-Host '  Techniverse wird dich NIE unaufgefordert' -F DarkYellow
    Write-Host '  nach deiner ID oder deinem Passwort fragen.' -F DarkYellow
    Write-Host ''
    do { Start-Sleep 2 } while (Get-Process rustdesk* -EA 0)

} catch {
    Write-Host "`n  FEHLER: $_" -F Red
    Write-Host '  Bitte kontaktiere den Techniverse-Support.' -F DarkYellow
    Write-Host ''
    Read-Host '  Druecke Enter zum Beenden'
} finally {
    Write-Host "`n  Raeume auf..." -F DarkYellow
    Get-Process rustdesk* -EA 0 | Stop-Process -Force -EA 0
    Start-Sleep 3
    if (Test-Path $cfg2Bak) {
        Copy-Item $cfg2Bak $cfg2 -Force
        Remove-Item $cfg2Bak -Force -EA 0
    } elseif (Test-Path $cfg2) {
        Remove-Item $cfg2 -Force -EA 0
    }
    if (Test-Path $installDir) { Remove-Item $installDir -Recurse -Force -EA 0 }
    if (-not $hadBackup) {
        $rdAD = Join-Path $env:APPDATA 'RustDesk'
        if (Test-Path $rdAD) { Remove-Item $rdAD -Recurse -Force -EA 0 }
    }
    if (Test-Path $tmp) { Remove-Item $tmp -Recurse -Force -EA 0 }
    Write-Host '  Aufgeraeumt. Bis zum naechsten Mal.' -F DarkGreen
    Start-Sleep 3
}
:: END_PS1