Get Encoding of Files [PowerShell]

Get-FileEncodingOfFilesInFolder.ps1

function Get-FileEncodingOfFilesInFolder
{
    [CmdletBinding()] Param (
     [Parameter(Mandatory = $True, ValueFromPipelineByPropertyName = $True)] [string]$Path, [string]$pattern
    )
 
    $files = Get-ChildItem -path $Path $pattern -Recurse | Select-Object FullName

    $encodings = @{}

    $encodingMembers = [System.Text.Encoding] | Get-Member -Static -MemberType Property
    $encodingMembers | Foreach-Object {
         $encodingBytes = [System.Text.Encoding]::($_.Name).GetPreamble() -join '-'
         $encodings[$encodingBytes] = $_.Name
    }
    $encodingLengths = $encodings.Keys | Where-Object { $_ } | Foreach-Object { ($_ -split "-").Count }

    $counter = 0
    $files | ForEach-Object {
    
        $counter= $counter+1
        $result = "UTF7"
        $file = $_

        $completed = $counter / $files.Count

        Write-Progress -Activity "Encoding detection" -status "$($counter) / $($files.count) Complete"
        $found=$false

        foreach($encodingLength in $encodingLengths | Sort -Descending)
        {
            $content = Get-Content $file.FullName -encoding byte -readcount $encodingLength

            $bytes = $content[0]
            $encoding = $encodings[$bytes -join '-']
            
            if($encoding)
            {
                $result = $encoding
                Write-Output "$($file.FullName): $([System.Text.Encoding]::$result)" 
                $found=$true
                break
            }
        }

        if ($found -eq $false){
            Write-Output "$($file.FullName): UNRECOGNIZED" 
        }
    }
}