refacto: moved display hand method to IPlayer interface

src/main/java/hepia/GameManager.java

@@ -238,18 +238,6 @@ public class GameManager {
         } while (true);
     }
 
-    private void displayPlayerHand(IPlayer player) {
-        System.out.println();
-        if (player instanceof CroupierPlayer) {
-            System.out.println("Croupier's hand is: " + ((CroupierPlayer) player).getHand());
-        } else if (player instanceof HumanPlayer) {
-            System.out.println("Your current hand is: " + ((HumanPlayer) player).getHand());
-        } else if (player instanceof AIPlayer) {
-            System.out.println("AI's hand is: " + ((AIPlayer) player).getHand());
-        }
-        System.out.println("Its value is: " + player.getHand().computeHandValue());
-    }
-
     public GameManager(
             Game game,
             int nbHumanPlayers,
@@ -332,7 +320,7 @@ public class GameManager {
                     System.out.println("======= Player's n°" + (i + 1) + " hand =======");
                     while (turnContinues) {
                         player.setHand(player.getSplittedHand().get(i));
-                        displayPlayerHand(player);
+                        player.displayPlayerHand();
 
                         turnContinues = drawCardOrStop(player);
 
@@ -349,7 +337,7 @@ public class GameManager {
             } else {
                 askPlayerForDoubleBet(player);
                 while (turnContinues) {
-                    displayPlayerHand(player);
+                    player.displayPlayerHand();
 
                     turnContinues = drawCardOrStop(player);
 
@@ -364,11 +352,17 @@ public class GameManager {
             }
         }
 
+        for (AIPlayer aiPlayer : this.aiPlayers) {
+            System.out.println(aiPlayer);
+
+            aiPlayer.basicStrategy(this.currentGame);
+        }
+
         // Croupier's turn
         System.out.println(this.croupier);
 
         while (this.croupier.getHand().computeHandValue() < 17) {
-            displayPlayerHand(this.croupier);
+            this.croupier.displayPlayerHand();
 
             for (Card card : this.croupier.getHand()) {
 
@@ -398,7 +392,7 @@ public class GameManager {
             this.bustedPlayers.add(this.croupier);
         }
 
-        displayPlayerHand(this.croupier);
+        this.croupier.displayPlayerHand();
     }
 
     private void compareHandsAssignGainsLosses(IPlayer player) {

src/main/java/hepia/HumanPlayer.java

@@ -125,4 +125,10 @@ public class HumanPlayer implements IPlayer {
 
         return str;
     }
+
+    @Override
+    public void displayPlayerHand() {
+        System.out.println("Human's hand is: " + this.getHand());
+        System.out.println("Its value is: " + this.getHand().computeHandValue());
+    }
 }

src/main/java/hepia/IPlayer.java

@@ -31,4 +31,6 @@ public interface IPlayer {
 
     @Override
     String toString();
+
+    void displayPlayerHand();
 }