Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing
Add-Type -AssemblyName Microsoft.VisualBasic
Add-Type @"
using System;
using System.Runtime.InteropServices;
public class Win32 {
    [DllImport("user32.dll")]
    public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

    [DllImport("kernel32.dll")]
    public static extern IntPtr GetConsoleWindow();
}
"@

# ==========================
# CONSOLE VERSTECKEN (WICHTIG)
# ==========================
$consolePtr = [Win32]::GetConsoleWindow()

if ($consolePtr -ne [IntPtr]::Zero) {
    [Win32]::ShowWindow($consolePtr, 0) # 0 = komplett verstecken
}
[System.Windows.Forms.Application]::EnableVisualStyles()

# ==========================
# SOURCE URL (WICHTIG für Restart)
# ==========================
$Global:SourceUrl = "https://winscript.dokware.de"

# ==========================
# ADMIN CHECK
# ==========================
$IsAdmin = ([Security.Principal.WindowsPrincipal] `
    [Security.Principal.WindowsIdentity]::GetCurrent()
).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

function Restart-AsAdmin {

    if (-not $Global:SourceUrl) {
        [System.Windows.Forms.MessageBox]::Show(
            "Keine URL gesetzt.",
            "Fehler",
            "OK",
            "Error"
        )
        return
    }

    Start-Process powershell.exe -Verb RunAs -ArgumentList @(
        "-NoProfile",
        "-ExecutionPolicy Bypass",
        "-Command `"irm '$Global:SourceUrl' | iex`""
    )

    # WICHTIG: Exit NICHT direkt im Event Thread
    Start-Job { Start-Sleep 1; [Environment]::Exit(0) } | Out-Null
}

# ==========================
# Farben
# ==========================
$PrimaryColor = [System.Drawing.Color]::FromArgb(0,102,204)
$HoverColor   = [System.Drawing.Color]::FromArgb(0,82,164)
$WhiteColor   = [System.Drawing.Color]::White
$BorderColor  = [System.Drawing.Color]::Gainsboro

# ==========================
# FORM
# ==========================
$form = New-Object System.Windows.Forms.Form
$form.Text = "dokware.de Service Center"
$form.Size = New-Object System.Drawing.Size(650,550)
$form.StartPosition = "CenterScreen"
$form.BackColor = $WhiteColor
$form.FormBorderStyle = "FixedSingle"
$form.MaximizeBox = $false
$form.Font = New-Object System.Drawing.Font("Segoe UI",10)

# ==========================
# HEADER
# ==========================
$header = New-Object System.Windows.Forms.Panel
$header.Dock = "Top"
$header.Height = 110
$header.BackColor = $WhiteColor
$form.Controls.Add($header)

# Linie
$line = New-Object System.Windows.Forms.Panel
$line.Dock = "Bottom"
$line.Height = 1
$line.BackColor = $BorderColor
$header.Controls.Add($line)

# LOGO
$picLogo = New-Object System.Windows.Forms.PictureBox
$picLogo.Size = New-Object System.Drawing.Size(300,80)
$picLogo.Location = New-Object System.Drawing.Point(20,15)
$picLogo.SizeMode = "Zoom"

try {
    $wc = New-Object Net.WebClient
    $picLogo.Image = [System.Drawing.Image]::FromStream(
        $wc.OpenRead("https://dokware.de/logo2012-400px.png")
    )
} catch {}

$header.Controls.Add($picLogo)

# ==========================
# ADMIN STATUS
# ==========================
$adminLabel = New-Object System.Windows.Forms.Label
$adminLabel.AutoSize = $true
$adminLabel.Location = New-Object System.Drawing.Point(340,20)
$adminLabel.Font = New-Object System.Drawing.Font("Segoe UI",10,[System.Drawing.FontStyle]::Bold)

if ($IsAdmin) {
    $adminLabel.Text = "Status: Administrator"
    $adminLabel.ForeColor = [System.Drawing.Color]::Green
} else {
    $adminLabel.Text = "Status: Kein Administrator"
    $adminLabel.ForeColor = [System.Drawing.Color]::Red
}

$header.Controls.Add($adminLabel)

# ==========================
# ADMIN BUTTON
# ==========================
$adminBtn = New-Object System.Windows.Forms.Button
$adminBtn.Text = "Als Administrator neu starten"
$adminBtn.Size = New-Object System.Drawing.Size(250,30)
$adminBtn.Location = New-Object System.Drawing.Point(340,50)
$adminBtn.BackColor = $PrimaryColor
$adminBtn.ForeColor = $WhiteColor
$adminBtn.FlatStyle = "Flat"
$adminBtn.FlatAppearance.BorderSize = 0

$adminBtn.Add_Click({ Restart-AsAdmin })

if ($IsAdmin) {
    $adminBtn.Enabled = $false
    $adminBtn.BackColor = [System.Drawing.Color]::LightGray
}

$header.Controls.Add($adminBtn)

# ==========================
# BUTTON FACTORY
# ==========================
function New-ModernButton {
    param($Text, $Y)

    $btn = New-Object System.Windows.Forms.Button
    $btn.Text = $Text
    $btn.Size = New-Object System.Drawing.Size(500,45)
    $btn.Location = New-Object System.Drawing.Point(70,$Y)
    $btn.BackColor = $PrimaryColor
    $btn.ForeColor = $WhiteColor
    $btn.FlatStyle = "Flat"
    $btn.FlatAppearance.BorderSize = 0
    $btn.Cursor = "Hand"
    $btn.Font = New-Object System.Drawing.Font("Segoe UI",11)

    $btn.Add_MouseEnter({ $this.BackColor = $HoverColor })
    $btn.Add_MouseLeave({ $this.BackColor = $PrimaryColor })

    return $btn
}

# ==========================
# FUNCTIONS
# ==========================
$btn1 = New-ModernButton "01   Systemsteuerung" 140
$btn1.Add_Click({ Start-Process "control.exe" })
$form.Controls.Add($btn1)

$btn2 = New-ModernButton "02   Programme deinstallieren" 195
$btn2.Add_Click({ Start-Process "appwiz.cpl" })
$form.Controls.Add($btn2)

$btn3 = New-ModernButton "03   Druckerverwaltung" 250
$btn3.Add_Click({ Start-Process "printmanagement.msc" })
$form.Controls.Add($btn3)

$MailCfg = "C:\Program Files\Microsoft Office\root\Office16\mlcfg32.cpl"

$btn4 = New-ModernButton "04   Mail-Konten Konfiguration" 305

if (-not (Test-Path $MailCfg)) {
    $btn4.Enabled = $false
    $btn4.BackColor = [System.Drawing.Color]::LightGray
    $btn4.ForeColor = [System.Drawing.Color]::DarkGray
}

$btn4.Add_Click({ Start-Process $MailCfg })
$form.Controls.Add($btn4)

$btn5 = New-ModernButton "05   Herunterfahren" 360
$btn5.Add_Click({

    $Minuten = [Microsoft.VisualBasic.Interaction]::InputBox(
        "Nach wie vielen Minuten?",
        "Herunterfahren",
        "30"
    )

    if ($Minuten -match '^\d+$') {
        Start-Process shutdown.exe "-s -t $([int]$Minuten*60)"
    }
})

$form.Controls.Add($btn5)

# ==========================
# FOOTER
# ==========================
$footer = New-Object System.Windows.Forms.StatusStrip

$status = New-Object System.Windows.Forms.ToolStripStatusLabel
$status.Spring = $true
$status.TextAlign = "MiddleRight"
$status.Text = "Ein Service von dokware.de"

$footer.Items.Add($status)
$form.Controls.Add($footer)

# ==========================
# START
# ==========================
[void]$form.ShowDialog()