FileExts cleanup

$basePath = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts"

# Get all extension subkeys (keys starting with a dot)
$extensions = Get-ChildItem -Path $basePath | Where-Object { $_.PSChildName -like ".*" }

foreach ($ext in $extensions) {
    $extPath = $ext.PsPath

    # 1. Clean up OpenWithProgids
    $openWithProgidsPath = "$extPath\OpenWithProgids"
    if (Test-Path $openWithProgidsPath) {
        # Find any property names that contain 'nomacs'
        $progIds = Get-ItemProperty -Path $openWithProgidsPath
        $progIds.PSObject.Properties | Where-Object { $_.Name -like "*nomacs*" } | ForEach-Object {
            Write-Host "Removing Progid parameter '$($_.Name)' from $openWithProgidsPath"
            Remove-ItemProperty -Path $openWithProgidsPath -Name $_.Name -ErrorAction SilentlyContinue -WhatIf
        }
    }

    # 2. Clean up UserChoice
    $userChoicePath = "$extPath\UserChoice"
    if (Test-Path $userChoicePath) {
        $userChoiceValues = Get-ItemProperty -Path $userChoicePath -ErrorAction SilentlyContinue

        # Check if the ProgId value matches your target
        if ($userChoiceValues -and $userChoiceValues.ProgId  -match 'nomacs') {
            Write-Host "Clearing ProgId and Hash values in $userChoicePath"

            # Delete the specific properties inside UserChoice
            Remove-ItemProperty -Path $userChoicePath -Name "ProgId" -ErrorAction SilentlyContinue -WhatIf
            Remove-ItemProperty -Path $userChoicePath -Name "Hash" -ErrorAction SilentlyContinue -WhatIf
        }
    }
}