public override string Speak()
{
base.Speak();
switch (_currState)
{
case JokeState.KnockKnock1:
ConversationIsOver = false;
_currState = JokeState.KnockKnock2;
return("Knock knock");
case JokeState.KnockKnock2:
ConversationIsOver = false;
_currState = JokeState.KnockKnock3;
return("Cash");
case JokeState.KnockKnock3:
ConversationIsOver = true;
return("No thanks, but I’d like some peanuts!");
default:
ConversationIsOver = true;
return("I forgot what joke I was telling!");
}
}
private async Task TellJokes(HttpContext context, WebSocket webSocket)
{
JokeModel[] jokes = LoadJokes();
Random rand = new Random();
int jokeIndex = rand.Next(jokes.Length);
ArraySegment <byte> bytesToSend = new ArraySegment <byte>();
byte[] readBuffer = new byte[1024];
string clientResponse;
JokeState jokeState = JokeState.None;
// send knock knock
string kk = "Knock, knock.";
// send greeting
bytesToSend = StringToBytes("Hi there, prepare yourself for hilarious jokes!");
// send over greeting message, endOfMessage is true will force the client to read this right away
await webSocket.SendAsync(
bytesToSend,
WebSocketMessageType.Text,
true,
CancellationToken.None
);
WebSocketReceiveResult result;
int bytesReceived = 1024;
// while they don't close
while (true)
{
// cleanse the buffer
for (int i = 0; i < bytesReceived; i++)
{
byte.TryParse("\0", out readBuffer[i]);
}
// await whose there
result = await webSocket.ReceiveAsync(
new ArraySegment <byte>(readBuffer),
CancellationToken.None
);
bytesReceived = result.Count < 1024 ? result.Count : 1024;
if (result.CloseStatus.HasValue)
{
break;
}
// send setup
clientResponse = Encoding.ASCII.GetString(readBuffer).Trim('\0');
jokeState = GetJokeState(clientResponse);
switch (jokeState)
{
case JokeState.KnockKnock:
bytesToSend = StringToBytes(kk);
await webSocket.SendAsync(
bytesToSend,
WebSocketMessageType.Text,
true,
CancellationToken.None
);
break;
case JokeState.Who:
bytesToSend = StringToBytes(jokes[jokeIndex].Who);
await webSocket.SendAsync(
bytesToSend,
WebSocketMessageType.Text,
true,
CancellationToken.None
);
break;
case JokeState.Punchline:
bytesToSend = StringToBytes(jokes[jokeIndex].Punchline);
jokeIndex = rand.Next(jokes.Length);
await webSocket.SendAsync(
bytesToSend,
WebSocketMessageType.Text,
true,
CancellationToken.None
);
break;
default:
bytesToSend = StringToBytes("That doesn't make sense.");
await webSocket.SendAsync(
bytesToSend,
WebSocketMessageType.Text,
true,
CancellationToken.None
);
break;
}
}
}
