/// <summary>
/// Processes given phrase, as if it will be qualified as greeting or valediction, it will be marked and response will follow.
/// </summary>
/// <param name="given">given phrase</param>
/// <returns>response, if was processed, null, if 'not my thing'</returns>
public string Process(string given)
{
// Check entry param
if (string.IsNullOrWhiteSpace(given))
{
return(null);
}
// Check, if _dialogUtils is initalized
if (_dialogUtils == null)
{
return("_dialogUtils is not present.");
}
// Change to lower case
given = given.Trim().ToLower();
// Prepare response variable
string responseText = null;
// Check, in known greetings
if (new[] { "hi", "hello", "welcome" }.Contains(given))
{
responseText = _dialogUtils.Greeting();
}
else if (new[] { "bye", "goodbye", "farewell" }.Contains(given))
{
responseText = _dialogUtils.Valediction();
}
return(responseText);
}