param([string]$BuildFolder = 'ApMode')

if ($PSVersionTable.PSEdition -ne 'Desktop') {
    & "$env:SystemRoot/System32/WindowsPowerShell/v1.0/powershell.exe" -NoProfile -STA -ExecutionPolicy Bypass -File $PSCommandPath -BuildFolder $BuildFolder
    exit $LASTEXITCODE
}
$ErrorActionPreference = 'Stop'
function Assert-Ap($condition, $message) { if (-not $condition) { throw $message } }
Add-Type -AssemblyName PresentationFramework
$apAssemblyPath = Join-Path $PSScriptRoot "DCT_test/bin/$BuildFolder/DCT_test.exe"
[void][Reflection.Assembly]::LoadFrom($apAssemblyPath)
$apWindow = New-Object DCT_test.MainWindow
try {
    $mode = $apWindow.FindName('ComboNetworkMode')
    $port = $apWindow.FindName('TextPort')
    $controls = $apWindow.FindName('ApControls')
    $externalGuide = $apWindow.FindName('ExternalApGuide')
    Assert-Ap ($mode.SelectedIndex -eq 0 -and $port.Text -eq '6000' -and $port.IsEnabled) 'Direct default must remain editable 6000'
    $mode.SelectedIndex = 1
    $ips = $apWindow.FindName('ComboIp')
    Assert-Ap ($port.Text -eq '6000' -and $port.IsEnabled -and $ips.IsEnabled -and $controls.Visibility -eq 'Collapsed' -and $externalGuide.Visibility -eq 'Visible') 'External AP current IP and editable port, no hotspot controls'
    $freePortListener = [Net.Sockets.TcpListener]::new([Net.IPAddress]::Loopback, 0)
    $freePortListener.Start()
    $freePort = $freePortListener.LocalEndpoint.Port
    $freePortListener.Stop()
    $ips.Items.Add('127.0.0.1') | Out-Null
    $ips.SelectedItem = '127.0.0.1'
    $port.Text = $freePort.ToString()
    $toggle = $apWindow.GetType().GetMethod('BtnToggleServer_Click', [Reflection.BindingFlags]'Instance,NonPublic')
    $toggle.Invoke($apWindow, @($null, [Windows.RoutedEventArgs]::new())) | Out-Null
    Assert-Ap ($apWindow.FindName('TextServerStatus').Text -eq "AP 대기 (127.0.0.1:$freePort)") 'AP must use the selected current IP and entered port'
    Assert-Ap (-not $mode.IsEnabled -and -not $ips.IsEnabled -and -not $port.IsEnabled) 'Running server must lock mode/address/port'
    $toggle.Invoke($apWindow, @($null, [Windows.RoutedEventArgs]::new())) | Out-Null
    Assert-Ap ($mode.IsEnabled -and $ips.IsEnabled -and $port.IsEnabled) 'Stopped external AP must restore endpoint editing'
    $mode.SelectedIndex = 2
    Assert-Ap ($externalGuide.Visibility -eq 'Collapsed') 'Hotspot must hide external router guide'
    Assert-Ap ($port.Text -eq '5000' -and -not $port.IsEnabled -and $controls.Visibility -eq 'Visible') 'AP controls/fixed port'
    Assert-Ap ($apWindow.FindName('ComboIp').SelectedItem -eq '192.168.4.1') 'AP fixed IP'
    $mode.SelectedIndex = 0
    Assert-Ap ($port.Text -eq '6000' -and $port.IsEnabled -and $controls.Visibility -eq 'Collapsed' -and $externalGuide.Visibility -eq 'Collapsed') 'Direct restore'
} finally { $apWindow.Close() }
Write-Output 'PASS: WPF external AP current IP/custom port/start/stop locks, fixed hotspot and Direct restore'

# Validate the actual helper with mocked network inventory: no UAC, NIC or
# firewall mutations are made by these checks.
$global:apVerificationAdapters = @([pscustomobject]@{Status='Up'; InterfaceDescription='Microsoft Wi-Fi Direct Virtual Adapter'; ifIndex=10})
$global:apVerificationAddresses = @([pscustomobject]@{IPAddress='192.168.137.1'; InterfaceIndex=10; PrefixLength=24})
$global:apVerificationDhcp = 'Disabled'
function Get-NetAdapter { param([switch]$IncludeHidden) $global:apVerificationAdapters }
function Get-NetIPAddress {
    param($InterfaceIndex, $AddressFamily)
    $global:apVerificationAddresses | Where-Object { -not $InterfaceIndex -or $_.InterfaceIndex -eq $InterfaceIndex }
}
function Get-NetIPInterface { param($InterfaceIndex, $AddressFamily) [pscustomobject]@{Dhcp=$global:apVerificationDhcp} }
$apHelper = Join-Path $PSScriptRoot 'DCT_test/Configure-HotspotAp.ps1'
& $apHelper -ValidateOnly
function Assert-Rejected($message) {
    $rejected = $false
    try { & $apHelper -ValidateOnly } catch { $rejected = $true }
    Assert-Ap $rejected $message
}
$global:apVerificationAdapters[0].InterfaceDescription = 'Intel Wi-Fi physical adapter'
Assert-Rejected 'Physical adapter must be rejected'
$global:apVerificationAdapters[0].InterfaceDescription = 'Microsoft Wi-Fi Direct Virtual Adapter'
$global:apVerificationAdapters += [pscustomobject]@{Status='Up'; InterfaceDescription='Microsoft Wi-Fi Direct Virtual Adapter #2'; ifIndex=11}
$global:apVerificationAddresses += [pscustomobject]@{IPAddress='192.168.137.1'; InterfaceIndex=11; PrefixLength=24}
Assert-Rejected 'Ambiguous hotspot adapters must be rejected'
$global:apVerificationAdapters = @($global:apVerificationAdapters[0])
$global:apVerificationAddresses = @($global:apVerificationAddresses[0], [pscustomobject]@{IPAddress='192.168.4.1'; InterfaceIndex=12; PrefixLength=24})
Assert-Rejected 'Address owned by another adapter must be rejected'
$global:apVerificationAddresses = @($global:apVerificationAddresses[0])
$global:apVerificationDhcp = 'Enabled'
Assert-Rejected 'DHCP client adapter must be rejected'
$global:apVerificationDhcp = 'Disabled'
$global:apVerificationAddresses += [pscustomobject]@{IPAddress='192.168.4.1'; InterfaceIndex=10; PrefixLength=16}
Assert-Rejected 'Wrong existing subnet prefix must be rejected'
$global:apVerificationAddresses[1].PrefixLength = 24
& $apHelper -ValidateOnly
Write-Output 'PASS: hotspot helper valid/repeated configuration, physical/ambiguous adapters, conflicting address, DHCP and subnet rejection (no system changes)'