[ADD] added sending the lobbies data from the server to the clients on startup

Client/Client.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Net.Sockets;
 using System.Text;
+using static SharedClientServer.JSONConvert;
 
 namespace Client
 {
@@ -18,6 +19,8 @@ namespace Client
         public bool Connected = false;
         private string username;
         public Callback OnSuccessfullConnect;
+        public Callback OnLobbiesListReceived;
+        public Lobby[] Lobbies { get; set; }
 
         public Client(string username)
         {
@@ -70,9 +73,9 @@ namespace Client
 
         private void handleData(byte[] message)
         {
-            byte id = message[0];
-            byte[] payload = new byte[message.Length - 1];
-            Array.Copy(message, 1, payload, 0, message.Length - 1);
+            byte id = message[4];
+            byte[] payload = new byte[message.Length - 5];
+            Array.Copy(message, 5, payload, 0, message.Length - 5);
             switch (id)
             {
                 case JSONConvert.LOGIN:
@@ -89,6 +92,14 @@ namespace Client
 
                 case JSONConvert.LOBBY:
                     // lobby data
+                    LobbyIdentifier lobbyIdentifier = JSONConvert.GetLobbyIdentifier(payload);
+                    switch (lobbyIdentifier)
+                    {
+                        case LobbyIdentifier.LIST:
+                            Lobbies = JSONConvert.GetLobbiesFromMessage(payload);
+                            OnLobbiesListReceived?.Invoke();
+                            break;
+                    }
                     //TODO fill lobby with the data received
                     break;
                 case JSONConvert.CANVAS:

Client/ViewModels/ViewModel.cs

@@ -9,6 +9,7 @@ using System.Diagnostics;
 using System.Windows;
 using System.Collections.ObjectModel;
 using Client.Views;
+using System.Linq;
 
 namespace Client
 {
@@ -21,14 +22,17 @@ namespace Client
 
         public Lobby SelectedLobby { get; set; }
 
+        private Client client;
+
         public ViewModel()
         {
             _model = new Model();
             _lobbies = new ObservableCollection<Lobby>();
-
-            _lobbies.Add(new Lobby(50, 3, 8));
-            _lobbies.Add(new Lobby(69, 1, 9));
-            _lobbies.Add(new Lobby(420, 7, 7));
+            client = ClientData.Instance.Client;
+            client.OnLobbiesListReceived = updateLobbies;
+            //_lobbies.Add(new Lobby(50, 3, 8));
+            //_lobbies.Add(new Lobby(69, 1, 9));
+            //_lobbies.Add(new Lobby(420, 7, 7));
 
             OnHostButtonClick = new RelayCommand(() => 
             {
@@ -38,6 +42,20 @@ namespace Client
             JoinSelectedLobby = new RelayCommand(startGameInLobby, true);
         }
 
+        private void updateLobbies()
+        {
+            Lobby[] lobbiesArr = client.Lobbies;
+            Application.Current.Dispatcher.Invoke(delegate
+            {
+                foreach (Lobby lobby in lobbiesArr)
+                {
+                    _lobbies.Add(lobby);
+                }
+            });
+        }
+
+
+
         private void startGameInLobby()
         {
             if (SelectedLobby != null)

Client/Views/LoginScreen.xaml.cs

@@ -34,6 +34,7 @@ namespace Client.Views
                 Application.Current.Dispatcher.Invoke(delegate {
                     data.User = user;
                     data.Client = client;
+                    client.SendMessage(JSONConvert.ConstructLobbyRequestMessage());
                     MainWindow startWindow = new MainWindow();
                     startWindow.Show();
                     this.Close();