private async Task <string> TryExtractCode(string name)
{
var pp = new PriceProvider();
var c = pp.GetCode(name.ToLower());
if (!string.IsNullOrEmpty(c) && await pp.IsValidAsCode(c))
{
return(c);
}
if (await pp.IsValidAsCode(name))
{
return(name);
}
return(null);
}
