tallybot-command.cs

public class Command
{
    public string Action { get; set; }

    public string Parameters { get; set; }

    public static bool TryParse(string text, out Command command)
    {
        command = null;

        if (string.IsNullOrWhiteSpace(text))
        {
            return false;
        }

        text = text.Trim();
        command = new Command();

        // Look for the first white space
        var whiteSpaceIndex = text.IndexOf(' ');

        if (whiteSpaceIndex == -1)
        {
            // No white space, treat the message as a command without parameter
            command.Action = text.ToLowerInvariant();
            return true;
        }

        // Extract the action & parameters
        command.Action = text.Substring(0, whiteSpaceIndex).ToLowerInvariant();
        command.Parameters = text.Substring(whiteSpaceIndex + 1);

        return true;
    }
}