/// <summary>
/// Appends additional dialog for the specified speaker to the state.
/// <paramref name="dialog"/> will have leading and trailing whitespace
/// removed and a space will be prepended to it if the existing dialog
/// for the specified speaker doesn't end with a whitespace.
///
/// If you don't want any input sanitization, use
/// <see cref="AppendRawDialog(string, string)"/> instead.
/// </summary>
/// <param name="speaker">The speaker to add dialog for.</param>
/// <param name="dialog">The dialog to add.</param>
/// <exception cref="ArgumentNullException">
/// Thrown if either <paramref name="speaker"/> or
/// <paramref name="dialog"/> is null.
/// </exception>
public void AppendDialog(string speaker, string dialog)
{
speaker = speaker ?? DefaultSpeaker;
if (dialog == null)
{
throw new ArgumentNullException(nameof(dialog));
}
if (Dialog.ContainsKey(speaker) && Dialog[speaker].Length > 0)
{
var ch = Dialog[speaker][Dialog[speaker].Length - 1];
if (char.IsWhiteSpace(ch))
{
Dialog[speaker] += dialog;
OnAppendDialog?.Invoke(speaker, dialog);
}
else
{
Dialog[speaker] += " " + dialog;
OnAppendDialog?.Invoke(speaker, " " + dialog);
}
}
else
{
Dialog[speaker] = dialog;
OnAppendDialog?.Invoke(speaker, dialog);
}
}
/// <summary>
/// Adds dialog to the state without any input sanitization.
/// </summary>
/// <param name="speaker">The speaker to add dialog for.</param>
/// <param name="dialog">The dialog to add.</param>
/// <exception cref="ArgumentNullException">
/// Thrown if either <paramref name="speaker"/> or
/// <paramref name="dialog"/> is null.
/// </exception>
public void AppendRawDialog(string speaker, string dialog)
{
speaker = speaker ?? DefaultSpeaker;
if (dialog == null)
{
throw new ArgumentNullException(nameof(dialog));
}
if (Dialog.ContainsKey(speaker))
{
Dialog[speaker] += dialog;
OnAppendDialog?.Invoke(speaker, dialog);
}
else
{
Dialog.Add(speaker, dialog);
OnAppendDialog?.Invoke(speaker, dialog);
}
}
