param([Parameter(Mandatory=$true)][string]$OutFile, [Parameter(Mandatory=$true)][string]$Work, [int]$HoldSeconds = 4)
$lines = New-Object System.Collections.Generic.List[string]
function L($s) { $lines.Add($s); [System.IO.File]::WriteAllLines($OutFile, $lines, (New-Object System.Text.UTF8Encoding($false))) }
L ("PSVersion: " + $PSVersionTable.PSVersion + "   CLR " + [System.Environment]::Version)
L ("IsOutputRedirected: " + [Console]::IsOutputRedirected)
L ""
$nstack = Join-Path $Work 'nstack111\lib\netstandard2.0\NStack.dll'
$tg     = Join-Path $Work 'tg115\lib\net472\Terminal.Gui.dll'
$sc     = Join-Path $Work 'sc049\lib\netstandard2.0\Spectre.Console.dll'
L "############ A) Terminal.Gui 1.15.0 (lib/net472) ############"
$tgOk = $false
try {
  Add-Type -Path $nstack -ErrorAction Stop
  L "  Add-Type -Path NStack.Core 1.1.1 (netstandard2.0) : OK"
  Add-Type -Path $tg -ErrorAction Stop
  L "  Add-Type -Path Terminal.Gui 1.15.0 (net472)       : OK"
  foreach ($a in ([AppDomain]::CurrentDomain.GetAssemblies() | Where-Object { $_.GetName().Name -in @('NStack', 'Terminal.Gui', 'System.Management') })) {
    L ("  loaded assembly: " + $a.GetName().Name + " v" + $a.GetName().Version + "  <- " + $(try { $a.Location } catch { 'dynamic' }))
  }
  $appType = [Type]::GetType('Terminal.Gui.Application, Terminal.Gui')
  L ("  [Type]::GetType('Terminal.Gui.Application, Terminal.Gui') -> " + $(if ($appType) { 'FOUND ' + $appType.AssemblyQualifiedName.Split(',')[0] } else { 'NULL' }))
  if ($appType) {
    if ([Console]::IsOutputRedirected) { L "  SKIP Init()/paint: stdout is redirected (no real console)" }
    else {
      $initM = $appType.GetMethod('Init', [Type[]]@())
      L ("  Application.Init() method: " + [bool]$initM)
      $initM.Invoke($null, @()) | Out-Null
      $tgOk = $true
      L "  Application.Init() -> SUCCEEDED  *** Terminal.Gui is LIVE inside this PowerShell ***"
      $winT   = [Type]::GetType('Terminal.Gui.Window, Terminal.Gui')
      $lblT   = [Type]::GetType('Terminal.Gui.Label, Terminal.Gui')
      $btnT   = [Type]::GetType('Terminal.Gui.Button, Terminal.Gui')
      $lbl2T  = [Type]::GetType('Terminal.Gui.Label, Terminal.Gui')
      L ("  types: Window=$([bool]$winT) Label=$([bool]$lblT) Button=$([bool]$btnT)")
      $w = [Activator]::CreateInstance($winT, [object[]]@("BakNRet - Terminal.Gui on PS $($PSVersionTable.PSVersion.Major).$($PSVersionTable.PSVersion.Minor)"))
      $l1 = [Activator]::CreateInstance($lblT, [object[]]@('Window drawn by Terminal.Gui 1.15.0 (net472)'))
      $l2 = [Activator]::CreateInstance($lbl2T, [object[]]@('CJK check: Chinese chars, box-drawing'))
      $b1 = [Activator]::CreateInstance($btnT, [object[]]@('OK'))
      $w.Add($l1); $w.Add($l2); $w.Add($b1)
      $w.X = 1; $w.Y = 1; $w.Width = 62; $w.Height = 9
      $l1.Y = 1; $l2.Y = 2; $b1.Y = 4
      $appType::TopLevel = $w
      $w.SetFocus()
      $w.Redraw($w.Bounds)
      $appType::Refresh()
      L "  Window + 2 Labels + Button added, TopLevel set, Redraw+Refresh called (look at the window)"
      Start-Sleep -Seconds $HoldSeconds
      $shut = $appType.GetMethod('Shutdown', [Type[]]@())
      $shut.Invoke($null, @()) | Out-Null
      L "  Application.Shutdown() -> called cleanly"
    }
  }
} catch {
  L ("  FAILED: " + $_.Exception.GetType().Name + ': ' + $_.Exception.Message)
  $ie = $_.Exception.InnerException; while ($ie) { L ("     inner: " + $ie.GetType().Name + ': ' + $ie.Message); $ie = $ie.InnerException }
  $le = $_.Exception.LoaderExceptions; if ($le) { foreach ($x in $le) { L ("     loaderEx: " + $x.Message) } }
  $tgOk = $false
}
L ""
L "############ B) Spectre.Console 0.49.1 (lib/netstandard2.0) ############"
$scOk = $false
try {
  Add-Type -Path $sc -ErrorAction Stop
  L "  Add-Type -Path Spectre.Console 0.49.1 (netstandard2.0) -> OK"
  $ansiT = [Type]::GetType('Spectre.Console.AnsiConsole, Spectre.Console')
  L ("  Spectre.Console.AnsiConsole -> " + $(if ($ansiT) { 'FOUND' } else { 'NULL' }))
  if ($ansiT) {
    $m = $ansiT.GetMethod('Markup', [Type[]]@([string]))
    L ("  AnsiConsole.Markup(string) : " + [bool]$m)
    $m.Invoke($null, [object[]]@('[red]red markup[/] [green]green[/] [bold]bold[/]')) | Out-Null
    L "  Markup(red/green/bold) INVOKED"
    $tableT = [Type]::GetType('Spectre.Console.Table, Spectre.Console')
    $t = [Activator]::CreateInstance($tableT)
    $t.AddColumn('Item'); $t.AddColumn('Size')
    $t.AddRow('alpha', '1.2 GB'); $t.AddRow('beta', 'OK')
    $ansiT::Write($t)
    L "  AnsiConsole.Write(Table with 2 cols, 2 rows) INVOKED"
    $ansiT::Write($t)
    L "  (table drawn a second time)"
    foreach ($n in @('Spectre.Console.ConfirmationPrompt', 'Spectre.Console.SelectionPrompt`1', 'Spectre.Console.MultiSelectionPrompt`1', 'Spectre.Console.Progress', 'Spectre.Console.Status', 'Spectre.Console.Live', 'Spectre.Console.TextPrompt`1', 'Spectre.Console.Layout', 'Spectre.Console.Panel', 'Spectre.Console.BarChart', 'Spectre.Console.BreakdownChart', 'Spectre.Console.Tree', 'Spectre.Console.Rule', 'Spectre.Console.Exception`1')) {
      $tt = [Type]::GetType("$n, Spectre.Console")
      L ("    primitive " + $n.PadRight(42) + " -> " + $(if ($tt) { 'AVAILABLE' } else { 'not found' }))
    }
    $scOk = $true
  }
} catch {
  L ("  FAILED: " + $_.Exception.GetType().Name + ': ' + $_.Exception.Message)
  $ie = $_.Exception.InnerException; while ($ie) { L ("     inner: " + $ie.GetType().Name + ': ' + $ie.Message); $ie = $ie.InnerException }
}
L ""
L "RESULT: TerminalGuiInitOK=$tgOk  SpectreConsoleOK=$scOk"
if (-not [Console]::IsOutputRedirected) {
  Write-Host ""
  Write-Host ("[loadtest PS {0}] TerminalGui={1}  Spectre.Console={2}  -- window closes in {3}s" -f $PSVersionTable.PSVersion, $tgOk, $scOk, $HoldSeconds) -ForegroundColor Yellow
  Start-Sleep -Seconds $HoldSeconds
}