function Get-PathItems {
    param (
        [string]$Path
    )
    if (Test-Path -Path $Path -PathType Container) {
        return Get-ChildItem -Path $Path -Recurse -Force -Attributes !Directory #Directories can't be scanned by Select-String so don't show them in listing
    }    
    throw "Virable path $($Path) must be a Folder or Container."
}

function Get-Lines {
    param (
        [string]$StingFilePath
    )
    if ((Test-Path -Path $StingFilePath -PathType Leaf)){
        $item = Get-Item -Path $StingFilePath
        $ext = $item.Extension
        if($ext -like "*.txt"){
            return Get-Content -Path $StingFilePath
        }
    }
    throw "Variable StringFilePath $($StringFilePath) must be a txt file"
}

function Check-Files {
    param (
        [string]$Path,
        [string]$StingFilePath
    )
    $Items = Get-PathItems -Path $Path
    $Lines = Get-Lines -StingFilePath $StingFilePath
    Write-Host "Items Found $($Items.Count)"
    Write-Host $Lines.Count
    <#$Items | Foreach-Object -ThrottleLimit 5 -Parallel {
        #"starting on $_"
        foreach ($line in $Lines){
            try {
                Select-String -Path $_ -Pattern $line
            }
            catch {
                Write-Host "$_ couldn't be processed by Select-String"
            }
        }
        #"ended $_"
    }#>

    <##>foreach($item in $Items){
        #Write-Host "starting on $item"
        foreach ($line in $Lines){
            try {
                Select-String -Path $item -Pattern $line | Select-Object -Property Path,LineNumber | Format-Table -AutoSize
            }
            catch {
                Write-Host "$item couldn't be processed by Select-String"
            }
        }
        #Write-Host "ended $item"
    }<##>
}