void internalHandler(object sender, MFCMessageEventArgs e)
{
var msg = e.Message;
switch (msg.MessageType)
{
case MFCMessageType.FCTYPE_SESSIONSTATE:
{
if (_handleSessionState)
onSessionState(msg);
}
break;
case MFCMessageType.FCTYPE_LOGIN:
{
//when we get a login message, if it's a success message, save the session id
if (msg.Arg1 == (int)MFCResponseType.FCRESPONSE_SUCCESS)
{
_loggedIn = true;
_userId = msg.Arg2;
_userName = msg.Data;
_sessionId = msg.To.ToString();
}
//not sure what to do here--for now, throw an exception
if (msg.Arg1 == (int)MFCResponseType.FCRESPONSE_ERROR)
throw new Exception("Unable to log in to MFC.");
}
break;
case MFCMessageType.FCTYPE_METRICS:
{
//this is a little hairy but what we're trying to do is get an initial list
//of models that are currently logged in to the server, primarily so we can
//know what their broadcaster ids are when we want to join channels.
//MFC sends a metrics message that contains a pointer to a javascript file
//that has the currently logged in models right after you log in to the chat server.
//They also send metrics messages that dont have the pointer, and I don't know what
//those are for yet, so here we only work with the msg that matches the if statement
//below. Then we strip out the javascript code so we're left with JSON we can
//parse
if (msg.To == 20 && msg.Arg1 == 0 && msg.Arg2 > 0)
{
//figure out the file pointer
var fileno = JsonConvert.DeserializeObject<MetricsPayload>(WebUtility.UrlDecode(msg.Data)).fileno;
//get the file
var modelInfo = _client.DownloadString(String.Format(ModelUrlFormat, fileno));
Metrics = modelInfo;
//strip out extraneous javascript
modelInfo = modelInfo.Replace("var g_hModelData = ", "");
modelInfo = modelInfo.Replace("LoadModelsFromObject(g_hModelData);", "");
modelInfo = modelInfo.Replace("};", "}");
//attempt to deserialize the model JSON
try
{
var m = JObject.Parse(modelInfo); //parse to a dynamic
var n = m.Properties().Where(p => !p.Name.StartsWith("tags")) //filter out the tags objects
.Children() //give us back JTokens
.Select(x => JsonConvert.DeserializeObject<User>(x.ToString())); //serialize the individual model objects
foreach (var model in n)
updateUserInfo(model.UserId ?? default(int), model);
}
catch (Exception oops)
{
//eat any exceptions-we'll do without a model list if there's an issue
//TODO: figure out something nicer to do here
}
}
OnUsersProcessed(new EventArgs());
}
break;
}
}
protected virtual void OnReceived(MFCMessageEventArgs e)
{
if (null != Received)
Received(this, e);
}
