param(
  [Parameter(Mandatory = $true)]
  [string]$ImagePath
)

$ErrorActionPreference = "Stop"

Add-Type -AssemblyName System.Runtime.WindowsRuntime
[Windows.Storage.StorageFile,Windows.Storage,ContentType=WindowsRuntime] | Out-Null
[Windows.Storage.FileAccessMode,Windows.Storage,ContentType=WindowsRuntime] | Out-Null
[Windows.Storage.Streams.IRandomAccessStream,Windows.Storage.Streams,ContentType=WindowsRuntime] | Out-Null
[Windows.Graphics.Imaging.BitmapDecoder,Windows.Graphics.Imaging,ContentType=WindowsRuntime] | Out-Null
[Windows.Graphics.Imaging.SoftwareBitmap,Windows.Graphics.Imaging,ContentType=WindowsRuntime] | Out-Null
[Windows.Media.Ocr.OcrEngine,Windows.Media.Ocr,ContentType=WindowsRuntime] | Out-Null

function Await-Operation {
  param(
    [Parameter(Mandatory = $true)]
    [object]$Operation,
    [Parameter(Mandatory = $true)]
    [type]$ResultType
  )

  $method = [System.WindowsRuntimeSystemExtensions].GetMethods() |
    Where-Object {
      $_.Name -eq "AsTask" -and
      $_.IsGenericMethodDefinition -and
      $_.GetParameters().Count -eq 1
    } |
    Select-Object -First 1

  $task = $method.MakeGenericMethod($ResultType).Invoke($null, @($Operation))
  return $task.GetAwaiter().GetResult()
}

if (-not (Test-Path -LiteralPath $ImagePath)) {
  throw "Image file does not exist: $ImagePath"
}

$engine = [Windows.Media.Ocr.OcrEngine]::TryCreateFromUserProfileLanguages()
if ($null -eq $engine) {
  throw "Windows OCR is not available for the current user language. Install OCR language support or import Excel/CSV."
}

$file = Await-Operation ([Windows.Storage.StorageFile]::GetFileFromPathAsync($ImagePath)) ([Windows.Storage.StorageFile])
$stream = Await-Operation ($file.OpenAsync([Windows.Storage.FileAccessMode]::Read)) ([Windows.Storage.Streams.IRandomAccessStream])
$decoder = Await-Operation ([Windows.Graphics.Imaging.BitmapDecoder]::CreateAsync($stream)) ([Windows.Graphics.Imaging.BitmapDecoder])
$bitmap = Await-Operation ($decoder.GetSoftwareBitmapAsync()) ([Windows.Graphics.Imaging.SoftwareBitmap])
$result = Await-Operation ($engine.RecognizeAsync($bitmap)) ([Windows.Media.Ocr.OcrResult])

[Console]::OutputEncoding = [System.Text.Encoding]::UTF8
Write-Output $result.Text