add event (just problem with first notification)

Qwirkle/QwirkleClassLibrary/AddPlayerNotifiedEventArgs.cs

@@ -0,0 +1,12 @@
+namespace QwirkleClassLibrary
+{
+    public class AddPlayerNotifiedEventArgs : EventArgs
+    {
+        public int numberBack {  get; private set; }
+
+        public AddPlayerNotifiedEventArgs(int numberBack)
+        {
+            this.numberBack = numberBack;
+        }
+    }
+}

Qwirkle/QwirkleClassLibrary/Game.cs

@@ -21,6 +21,11 @@ namespace QwirkleClassLibrary
         public ReadOnlyCollection<Score> ScoreList => scores.AsReadOnly();
         private readonly List<Score> scores = new();
 
+        public event EventHandler<AddPlayerNotifiedEventArgs> PlayerAddNotified;
+
+        protected virtual void OnPlayerNotified(AddPlayerNotifiedEventArgs args)
+            => PlayerAddNotified?.Invoke(this, args);
+
         public Game()
         {
             bag = new TileBag(3);
@@ -31,11 +36,13 @@ namespace QwirkleClassLibrary
         {
             if (string.IsNullOrWhiteSpace(playerTag) == true || this.GameRunning == true)
             {
+                OnPlayerNotified(new AddPlayerNotifiedEventArgs(1));
                 return false;
             }
 
             if (players.Count >= 4)
             {
+                OnPlayerNotified(new AddPlayerNotifiedEventArgs(2));
                 return false;
             }
 
@@ -43,19 +50,22 @@ namespace QwirkleClassLibrary
             {
                 if (p.NameTag == playerTag)
                 {
+                    OnPlayerNotified(new AddPlayerNotifiedEventArgs(3));
                     return false;
                 }
+
             }
 
             players.Add(CreatePlayer(playerTag));
             scores.Add(new Score(players[players.Count-1]));
-
+            OnPlayerNotified(new AddPlayerNotifiedEventArgs(0));
             return true;
         }
 
         public Player CreatePlayer(string playerTag)
         {
             var player = new Player(playerTag);
+
             return player;
         }
 

Qwirkle/QwirkleConsoleApp/NotificationClass.cs

@@ -0,0 +1,33 @@
+using QwirkleClassLibrary;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QwirkleConsoleApp
+{
+    class NotificationClass
+    {
+        public void NotificationMessagePlayer(object? sender, AddPlayerNotifiedEventArgs args)
+        {
+            int t = args.numberBack;
+
+            switch (t)
+            {
+                case 0:
+                    Console.WriteLine("Player as correctly add");
+                    break;
+                case 1:
+                    Console.WriteLine("ERROR : The name is null or white space");
+                    break;
+                case 2:
+                    Console.WriteLine("ERROR : The game is full");
+                    break;
+                case 3:
+                    Console.WriteLine("ERROR : Name exist");
+                    break;
+            }
+        }
+    }
+}

Qwirkle/QwirkleConsoleApp/Program.cs

@@ -1,24 +1,26 @@
 using QwirkleClassLibrary;
+using QwirkleConsoleApp;
 using System.Net.Quic;
 using System.Text;
 using System.Transactions;
 using static System.Console;
 
+
 static void AddPlayers(Game game)
 {
+    NotificationClass nc = new NotificationClass();
+
     while (game.PlayerList.Count < 4)
     {
         Write("Enter player tag : ");
         string? playerTag = ReadLine();
 
-        if (game.AddPlayerInGame(playerTag) == false)
+        game.AddPlayerInGame(playerTag);
-        {
+
-            WriteLine("ERROR : Player already exist or game is running !");
+        game.PlayerAddNotified -= nc.NotificationMessagePlayer;
-        }
+
-        else
+        game.PlayerAddNotified += nc.NotificationMessagePlayer;
-        {
+
-            WriteLine("Player " + playerTag + " added !");
-        }
 
         Write("Do you want to add another player ? (y/n) : ");
         string? answer = ReadLine();
@@ -45,7 +47,7 @@ static void ShowTiles(Game game)
 
     for (int i = 0; i < currentPlayer.Tiles.Count(); i++)
     {
-        stringBuilder.Append("[" + (i+1)  + "] ");
+        stringBuilder.Append("[" + (i + 1) + "] ");
         stringBuilder.AppendLine(currentPlayer.Tiles[i].ToString());
     }