Get-NewATable.ps1

# Beautify xml  
# Ref: https://devblogs.microsoft.com/powershell/format-xml/

function Format-XML ([xml]$xml)
{
    $StringWriter = New-Object System.IO.StringWriter
    $XmlWriter = New-Object System.XMl.XmlTextWriter $StringWriter
    $xmlWriter.Formatting = “indented”
    $xmlWriter.Indentation = 4
    $xml.WriteContentTo($XmlWriter)
    $XmlWriter.Flush()
    $StringWriter.Flush()
    $StringWriter.ToString()
}

# Get minified xml data
$header= @{"Accept" =  "application/xml"}
$RawData = ( Invoke-WebRequest -UseBasicParsing -Uri "http://api.nbp.pl/api/exchangerates/tables/a"  -Headers $header -Method Get ).content


Format-XML $RawData  | Out-File -Encoding utf8 -FilePath C:\Dane\TabA.xml