private static IStory <IMessageActivity> GetResultStory(IStoryRecorder <IMessageActivity> storyRecorder, DialogStatus resultType, Predicate <object> resultPredicate = null, Type exceptionType = null)
{
var story = storyRecorder.Rewind();
story.AddStoryFrame(new DialogStoryFrame <IMessageActivity>(resultType, resultPredicate, exceptionType));
return(story);
}
public static IStory <IMessageActivity> DialogDoneWithResult <T>(this IStoryRecorder <IMessageActivity> recorder, Predicate <T> resultPredicate)
{
return(GetResultStory(recorder, DialogStatus.Finished, resultObject =>
{
T result;
try
{
result = (T)resultObject;
}
catch
{
var message =
$"Unable to cast result of type '{resultObject.GetType().Name}' to type '{typeof(T).Name}'.";
throw new FormatException(message);
}
return resultPredicate(result);
}));
}
public static IStory <IMessageActivity> DialogFailedWithExceptionOfType <TExceptionType>(this IStoryRecorder <IMessageActivity> recorder)
{
return(GetResultStory(recorder, DialogStatus.Failed, null, typeof(TExceptionType)));
}
public static IStory <IMessageActivity> DialogFailed(this IStoryRecorder <IMessageActivity> recorder)
{
return(GetResultStory(recorder, DialogStatus.Failed));
}
public static IStory <IMessageActivity> DialogDoneWithResult(this IStoryRecorder <IMessageActivity> recorder, Predicate <object> resultPredicate)
{
return(GetResultStory(recorder, DialogStatus.Finished, resultPredicate));
}
public static IStory DialogDone(this IStoryRecorder recorder)
{
return(GetResultStory(recorder, DialogStatus.Finished));
}
public static IStory DialogFailed(this IStoryRecorder recorder)
{
return(GetResultStory(recorder, DialogStatus.Failed));
}