private void SetupScreen()
{
var chatMenu = new ChatMenuScreen(_chatUi);
var mainMenu = new MainMenuScreen(_chatUi);
mainMenu.MenuItems = new List <MenuItem>
{
new MenuItem("0", "Connect", (_) => { _chatClient.Connect(_configuration); }, null),
new MenuItem("1", "List chat rooms", (_) => { _chatUi.PrintAvailableRooms(_chatClient.GetChatRooms()); }, null),
new MenuItem("2", "Subscribe chat room", (room) => _chatClient.SubscribeChatRoom(room).Wait(), null),
new MenuItem("3", "Unsubscribe chat room", (room) => _chatClient.UnsubscribeChatRoom(room).Wait(), null),
new MenuItem("4", "Enter chat room", (room) => _chatClient.EnterChatRoom(room, _chatUi.PrintMessage).Wait(), chatMenu),
new MenuItem("5", "Leave chat room", (_) => _chatClient.LeaveChatRoom().Wait(), null),
new MenuItem("6", "Disconnect", (_) => _chatClient.Disconnect().Wait(), null),
};
chatMenu.MenuItems = new List <MenuItem>
{
new MenuItem("10", "Connect", (_) => _chatClient.Connect(_configuration), null),
new MenuItem("11", "List signed users", (_) => { _chatUi.PrintSignedUsers(_chatClient.GetRegisteredUsers()); }, null),
new MenuItem("12", "List online users", (_) => { _chatUi.PrintOnlineUsers(_chatClient.GetOnlineUsers()); }, null),
new MenuItem("13", "Publish message", (msg) => _chatClient.PublishMessage(msg), null),
new MenuItem("14", "Leave room", (_) => _chatClient.LeaveChatRoom(), mainMenu),
new MenuItem("15", "Disconnect", (_) => _chatClient.Disconnect(), null),
};
_currentScreen = mainMenu;
}