public static FB_Event parse_delta(Session session, JToken data) { var class_ = data?.get("class")?.Value <string>(); if (class_ == "ParticipantsAddedToGroupThread") { return(FB_ParticipantsAdded._parse(session, data)); } else if (class_ == "ParticipantLeftGroupThread") { return(FB_ParticipantRemoved._parse(session, data)); } else if (class_ == "MarkFolderSeen") { // TODO: Finish this var folders = data.get("folders")?.Select(folder => folder?.Value <string>().Replace("FOLDER_", "")); var at = long.Parse(data?.get("timestamp")?.Value <string>()); return(null); } else if (class_ == "ThreadName") { return(FB_TitleSet._parse(session, data)); } else if (class_ == "ForcedFetch") { return(FB_UnfetchedThreadEvent._parse(session, data)); } else if (class_ == "DeliveryReceipt") { return(FB_MessagesDelivered._parse(session, data)); } else if (class_ == "ReadReceipt") { return(FB_ThreadsRead._parse_read_receipt(session, data)); } else if (class_ == "MarkRead") { return(FB_ThreadsRead._parse(session, data)); } else if (class_ == "NoOp") { // Skip "no operation" events return(null); } else if (class_ == "ClientPayload") { throw new FBchatParseError("This is implemented in `parse_events`"); } else if (class_ == "NewMessage") { return(FB_MessageEvent._parse(session, data)); } else if (class_ == "ThreadFolder") { return(FB_ThreadFolder._parse(session, data)); } return(new FB_UnknownEvent() { source = "Delta class", data = data }); }