feat(blackjack): add PLAYER_WON state to BlackJackState

Reviewed-on: #106

backend/requests/blackjack.http

@@ -7,7 +7,7 @@ Content-Type: application/json
 }
 
 ###
-POST http://localhost:8080/blackjack/202/hit
+POST http://localhost:8080/blackjack/54/hit
 Authorization: Bearer {{token}}
 
 ###

backend/src/main/java/de/szut/casino/blackjack/BlackJackService.java

@@ -96,7 +96,6 @@ public class BlackJackService {
         return game;
     }
 
-    
     private BlackJackGameEntity refreshGameState(BlackJackGameEntity game) {
         return blackJackGameRepository.findById(game.getId()).orElse(game);
     }
@@ -205,7 +204,20 @@ public class BlackJackService {
         int playerHandValue = calculateHandValue(game.getPlayerCards());
 
         if (playerHandValue == 21) {
-            return BlackJackState.PLAYER_WON;
+            CardEntity hole = drawCardFromDeck(game);
+            hole.setCardType(CardType.DEALER);
+            game.getDealerCards().add(hole);
+
+            int dealerHandValue = calculateHandValue(game.getDealerCards());
+
+            if (dealerHandValue == 21) {
+                return BlackJackState.DRAW;
+            } else {
+                BigDecimal blackjackWinnings = game.getBet().multiply(new BigDecimal("1.5"));
+                UserEntity user = getUserWithFreshData(game.getUser());
+                user.setBalance(user.getBalance().add(blackjackWinnings));
+                return BlackJackState.PLAYER_BLACKJACK;
+            }
         } else if (playerHandValue > 21) {
             return BlackJackState.PLAYER_LOST;
         }
@@ -216,7 +228,6 @@ public class BlackJackService {
     private int calculateHandValue(List<CardEntity> hand) {
         int sum = 0;
         int aceCount = 0;
-        
         for (CardEntity card : hand) {
             sum += card.getRank().getValue();
             if (card.getRank() == Rank.ACE) {

backend/src/main/java/de/szut/casino/blackjack/BlackJackState.java

@@ -1,8 +1,9 @@
 package de.szut.casino.blackjack;
 
 public enum BlackJackState {
-    PLAYER_WON,
     IN_PROGRESS,
+    PLAYER_BLACKJACK,
     PLAYER_LOST,
+    PLAYER_WON,
     DRAW,
 }

backend/src/main/java/de/szut/casino/blackjack/CardEntity.java

@@ -31,6 +31,7 @@ public class CardEntity {
     private Rank rank;
 
     @Enumerated(EnumType.STRING)
+    @JsonIgnore
     private CardType cardType;
 }