Merge pull request 'feat: add stand and get game features to blackjack game with animations' (!105) from task/CAS-50/add_rest_blackjack_logic_with_frontend_animations into main

Reviewed-on: #105
Reviewed-by: Jan K9f <jan@kjan.email>

backend/requests/blackjack.http

@@ -10,3 +10,11 @@ Content-Type: application/json
 POST http://localhost:8080/blackjack/54/hit
 Authorization: Bearer {{token}}
 
+###
+POST http://localhost:8080/blackjack/202/stand
+Authorization: Bearer {{token}}
+
+###
+GET http://localhost:8080/blackjack/202
+Authorization: Bearer {{token}}
+

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

@@ -26,6 +26,23 @@ public class BlackJackGameController {
         this.userService = userService;
     }
 
+    @GetMapping("/blackjack/{id}")
+    public ResponseEntity<Object> getGame(@PathVariable Long id, @RequestHeader("Authorization") String token) {
+        Optional<UserEntity> optionalUser = userService.getCurrentUser(token);
+
+        if (optionalUser.isEmpty()) {
+            return ResponseEntity.notFound().build();
+        }
+
+        UserEntity user = optionalUser.get();
+        BlackJackGameEntity game = blackJackService.getBlackJackGame(id);
+        if (game == null || !Objects.equals(game.getUserId(), user.getId())) {
+            return ResponseEntity.notFound().build();
+        }
+
+        return ResponseEntity.ok(game);
+    }
+
     @PostMapping("/blackjack/{id}/hit")
     public ResponseEntity<Object> hit(@PathVariable Long id, @RequestHeader("Authorization") String token) {
         Optional<UserEntity> optionalUser = userService.getCurrentUser(token);
@@ -40,13 +57,41 @@ public class BlackJackGameController {
             return ResponseEntity.notFound().build();
         }
 
-        if (game.getState() != BlackJackState.IN_PROGRESS) {
+        return ResponseEntity.ok(blackJackService.hit(game));
-            Map<String, String> errorResponse = new HashMap<>();
+    }
-            errorResponse.put("error", "Invalid state");
+
-            return ResponseEntity.badRequest().body(errorResponse);
+    @PostMapping("/blackjack/{id}/stand")
+    public ResponseEntity<Object> stand(@PathVariable Long id, @RequestHeader("Authorization") String token) {
+        Optional<UserEntity> optionalUser = userService.getCurrentUser(token);
+
+        if (optionalUser.isEmpty()) {
+            return ResponseEntity.notFound().build();
         }
 
-        return ResponseEntity.ok(blackJackService.hit(game, user));
+        UserEntity user = optionalUser.get();
+        BlackJackGameEntity game = blackJackService.getBlackJackGame(id);
+        if (game == null || !Objects.equals(game.getUserId(), user.getId())) {
+            return ResponseEntity.notFound().build();
+        }
+
+        return ResponseEntity.ok(blackJackService.stand(game));
+    }
+
+    @PostMapping("/blackjack/{id}/doubleDown")
+    public ResponseEntity<Object> doubleDown(@PathVariable Long id, @RequestHeader("Authorization") String token) {
+        Optional<UserEntity> optionalUser = userService.getCurrentUser(token);
+
+        if (optionalUser.isEmpty()) {
+            return ResponseEntity.notFound().build();
+        }
+
+        UserEntity user = optionalUser.get();
+        BlackJackGameEntity game = blackJackService.getBlackJackGame(id);
+        if (game == null || !Objects.equals(game.getUserId(), user.getId())) {
+            return ResponseEntity.notFound().build();
+        }
+
+        return ResponseEntity.ok(blackJackService.doubleDown(game));
     }
 
     @PostMapping("/blackjack/start")

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

@@ -29,7 +29,6 @@ public class BlackJackGameEntity {
     @JsonIgnore
     private UserEntity user;
 
-    // Expose UserID to JSON output
     public Long getUserId() {
         return user != null ? user.getId() : null;
     }

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

@@ -3,6 +3,7 @@ package de.szut.casino.blackjack;
 import de.szut.casino.user.UserEntity;
 import de.szut.casino.user.UserRepository;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
 import java.util.List;
@@ -13,52 +14,167 @@ import java.util.Random;
 public class BlackJackService {
     private final BlackJackGameRepository blackJackGameRepository;
     private final UserRepository userRepository;
+    private final Random random = new Random();
 
     public BlackJackService(BlackJackGameRepository blackJackGameRepository, UserRepository userRepository) {
         this.blackJackGameRepository = blackJackGameRepository;
         this.userRepository = userRepository;
     }
 
-    private final Random random = new Random();
-
     public BlackJackGameEntity getBlackJackGame(Long id) {
-        Optional<BlackJackGameEntity> optionalBlackJackGame = blackJackGameRepository.findById(id);
+        return blackJackGameRepository.findById(id).orElse(null);
-        return optionalBlackJackGame.orElse(null);
     }
 
+    @Transactional
     public BlackJackGameEntity createBlackJackGame(UserEntity user, BigDecimal betAmount) {
         BlackJackGameEntity game = new BlackJackGameEntity();
         game.setUser(user);
         game.setBet(betAmount);
+        
         initializeDeck(game);
+        dealInitialCards(game);
+        
+        game.setState(getState(game));
+        deductBetFromBalance(user, betAmount);
+        
+        return blackJackGameRepository.save(game);
+    }
 
-        for (int i = 0; i < 2; i++) {
+    @Transactional
-            CardEntity playerCard = drawCardFromDeck(game);
+    public BlackJackGameEntity hit(BlackJackGameEntity game) {
-            playerCard.setCardType(CardType.PLAYER);
+        game = refreshGameState(game);
-            game.getPlayerCards().add(playerCard);
+        
+        if (game.getState() != BlackJackState.IN_PROGRESS) {
+            return game;
         }
+        
+        dealCardToPlayer(game);
+        updateGameStateAndBalance(game);
+        
+        return blackJackGameRepository.save(game);
+    }
 
-        CardEntity dealerCard = drawCardFromDeck(game);
+    @Transactional
-        dealerCard.setCardType(CardType.DEALER);
+    public BlackJackGameEntity stand(BlackJackGameEntity game) {
-        game.getDealerCards().add(dealerCard);
+        game = refreshGameState(game);
-
+        
-        BlackJackState state = handleState(game, user);
+        if (game.getState() != BlackJackState.IN_PROGRESS) {
-        game.setState(state);
+            return game;
-
+        }
-        userRepository.save(user);
+        
-        blackJackGameRepository.save(game);
+        dealCardsToDealerUntilMinimumScore(game);
+        determineWinnerAndUpdateBalance(game);
+        
+        return blackJackGameRepository.save(game);
+    }
 
+    @Transactional
+    public BlackJackGameEntity doubleDown(BlackJackGameEntity game) {
+        game = refreshGameState(game);
+        
+        if (game.getState() != BlackJackState.IN_PROGRESS || game.getPlayerCards().size() != 2) {
+            return game;
+        }
+        
+        UserEntity user = getUserWithFreshData(game.getUser());
+        BigDecimal additionalBet = game.getBet();
+        
+        if (user.getBalance().compareTo(additionalBet) < 0) {
+            return game;
+        }
+        
+        deductBetFromBalance(user, additionalBet);
+        game.setBet(game.getBet().add(additionalBet));
+        
+        dealCardToPlayer(game);
+        updateGameStateAndBalance(game);
+        
+        if (game.getState() == BlackJackState.IN_PROGRESS) {
+            return stand(game);
+        }
+        
         return game;
     }
 
-    public BlackJackGameEntity hit(BlackJackGameEntity game, UserEntity user) {
+    private BlackJackGameEntity refreshGameState(BlackJackGameEntity game) {
-        CardEntity drawnCard = drawCardFromDeck(game);
+        return blackJackGameRepository.findById(game.getId()).orElse(game);
-        drawnCard.setCardType(CardType.PLAYER);
+    }
-        game.getPlayerCards().add(drawnCard);
+    
+    private UserEntity getUserWithFreshData(UserEntity user) {
+        return userRepository.findById(user.getId()).orElse(user);
+    }
+    
+    private void dealInitialCards(BlackJackGameEntity game) {
+        for (int i = 0; i < 2; i++) {
+            dealCardToPlayer(game);
+        }
+        
+        dealCardToDealer(game);
+    }
+    
+    private void dealCardToPlayer(BlackJackGameEntity game) {
+        CardEntity card = drawCardFromDeck(game);
+        card.setCardType(CardType.PLAYER);
+        game.getPlayerCards().add(card);
+    }
+    
+    private void dealCardToDealer(BlackJackGameEntity game) {
+        CardEntity card = drawCardFromDeck(game);
+        card.setCardType(CardType.DEALER);
+        game.getDealerCards().add(card);
+    }
+    
+    private void dealCardsToDealerUntilMinimumScore(BlackJackGameEntity game) {
+        while (calculateHandValue(game.getDealerCards()) < 17) {
+            dealCardToDealer(game);
+        }
+    }
+    
+    private void updateGameStateAndBalance(BlackJackGameEntity game) {
+        game.setState(getState(game));
+        
+        if (game.getState() == BlackJackState.PLAYER_WON) {
+            updateUserBalance(game, true);
+        } else if (game.getState() == BlackJackState.PLAYER_LOST) {
+            updateUserBalance(game, false);
+        }
+    }
+    
+    private void determineWinnerAndUpdateBalance(BlackJackGameEntity game) {
+        int playerValue = calculateHandValue(game.getPlayerCards());
+        int dealerValue = calculateHandValue(game.getDealerCards());
 
-        game.setState(handleState(game, user));
+        if (dealerValue > 21 || playerValue > dealerValue) {
+            game.setState(BlackJackState.PLAYER_WON);
+            updateUserBalance(game, true);
+        } else if (playerValue < dealerValue) {
+            game.setState(BlackJackState.PLAYER_LOST);
+            updateUserBalance(game, false);
+        } else {
+            game.setState(BlackJackState.DRAW);
+            updateUserBalance(game, false); // For draw, player gets their bet back
+        }
+    }
+    
+    private void deductBetFromBalance(UserEntity user, BigDecimal betAmount) {
+        user.setBalance(user.getBalance().subtract(betAmount));
+        userRepository.save(user);
+    }
 
-        return blackJackGameRepository.save(game);
+    @Transactional
+    private void updateUserBalance(BlackJackGameEntity game, boolean isWin) {
+        UserEntity user = getUserWithFreshData(game.getUser());
+        BigDecimal betAmount = game.getBet();
+        BigDecimal balance = user.getBalance();
+        
+        if (isWin) {
+            balance = balance.add(betAmount.multiply(BigDecimal.valueOf(2)));
+        } else if (game.getState() == BlackJackState.DRAW) {
+            balance = balance.add(betAmount);
+        }
+        
+        user.setBalance(balance);
+        userRepository.save(user);
     }
 
     private void initializeDeck(BlackJackGameEntity game) {
@@ -84,7 +200,7 @@ public class BlackJackService {
         return game.getDeck().removeFirst();
     }
 
-    private BlackJackState handleState(BlackJackGameEntity game, UserEntity user) {
+    private BlackJackState getState(BlackJackGameEntity game) {
         int playerHandValue = calculateHandValue(game.getPlayerCards());
 
         if (playerHandValue == 21) {
@@ -95,14 +211,14 @@ public class BlackJackService {
             int dealerHandValue = calculateHandValue(game.getDealerCards());
 
             if (dealerHandValue == 21) {
-                return BlackJackState.STANDOFF;
+                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) {
-            user.setBalance(user.getBalance().subtract(game.getBet()));
             return BlackJackState.PLAYER_LOST;
         }
 

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

@@ -4,5 +4,6 @@ public enum BlackJackState {
     IN_PROGRESS,
     PLAYER_BLACKJACK,
     PLAYER_LOST,
-    STANDOFF,
+    PLAYER_WON,
+    DRAW,
 }

frontend/src/app/feature/deposit/deposit.component.ts

@@ -16,12 +16,12 @@ import {
 } from '@angular/core';
 import { FormControl, FormGroup, ReactiveFormsModule, Validators } from '@angular/forms';
 import { loadStripe, Stripe } from '@stripe/stripe-js';
-import { DepositService } from '../../service/deposit.service';
 import { debounceTime } from 'rxjs';
-import { environment } from '../../../environments/environment';
 import { NgIf } from '@angular/common';
-import { ModalAnimationService } from '../../shared/services/modal-animation.service';
 import gsap from 'gsap';
+import { DepositService } from '@service/deposit.service';
+import { environment } from '@environments/environment';
+import { ModalAnimationService } from '@shared/services/modal-animation.service';
 
 @Component({
   selector: 'app-deposit',

frontend/src/app/feature/game/blackjack/blackjack.component.html

@@ -5,10 +5,28 @@
     <div class="lg:col-span-3 space-y-6 flex flex-col gap-4">
       <app-dealer-hand [cards]="dealerCards()"></app-dealer-hand>
       <app-player-hand [cards]="playerCards()"></app-player-hand>
+
+      @if (isActionInProgress()) {
+        <div class="flex justify-center">
+          <div
+            class="card p-4 flex items-center gap-3 animate-pulse bg-deep-blue-light border border-deep-blue-light/50"
+          >
+            <div
+              class="w-5 h-5 rounded-full border-2 border-white border-t-transparent animate-spin"
+            ></div>
+            <span>{{ currentAction() }}</span>
+          </div>
+        </div>
+      }
+
       @if (gameInProgress()) {
         <app-game-controls
+          [playerCards]="playerCards()"
+          [gameState]="gameState()"
+          [isActionInProgress]="isActionInProgress()"
           (hit)="onHit()"
           (stand)="onStand()"
+          (doubleDown)="onDoubleDown()"
           (leave)="leaveGame()"
         ></app-game-controls>
       }
@@ -19,8 +37,17 @@
         [balance]="balance()"
         [currentBet]="currentBet()"
         [gameInProgress]="gameInProgress()"
+        [isActionInProgress]="isActionInProgress()"
         (newGame)="onNewGame($event)"
       ></app-game-info>
     </div>
   </div>
 </div>
+
+<!-- Game Result Modal -->
+<app-game-result
+  [gameState]="gameState()"
+  [amount]="currentBet()"
+  [show]="showGameResult()"
+  (gameResultClosed)="onCloseGameResult()"
+></app-game-result>

frontend/src/app/feature/game/blackjack/blackjack.component.ts

@@ -1,15 +1,18 @@
 import { ChangeDetectionStrategy, Component, inject, signal } from '@angular/core';
 import { CommonModule } from '@angular/common';
-import { NavbarComponent } from '../../../shared/components/navbar/navbar.component';
 import { Router } from '@angular/router';
-import { UserService } from '../../../service/user.service';
 import { PlayingCardComponent } from './components/playing-card/playing-card.component';
 import { DealerHandComponent } from './components/dealer-hand/dealer-hand.component';
 import { PlayerHandComponent } from './components/player-hand/player-hand.component';
 import { GameControlsComponent } from './components/game-controls/game-controls.component';
 import { GameInfoComponent } from './components/game-info/game-info.component';
-import { Card, BlackjackGame } from './models/blackjack.model';
+import { Card, BlackjackGame } from '@blackjack/models/blackjack.model';
-import { BlackjackService } from './services/blackjack.service';
+import { BlackjackService } from '@blackjack/services/blackjack.service';
+import { HttpErrorResponse } from '@angular/common/http';
+import { GameResultComponent } from '@blackjack/components/game-result/game-result.component';
+import { GameState } from '@blackjack/enum/gameState';
+import { NavbarComponent } from '@shared/components/navbar/navbar.component';
+import { UserService } from '@service/user.service';
 
 @Component({
   selector: 'app-blackjack',
@@ -22,6 +25,7 @@ import { BlackjackService } from './services/blackjack.service';
     PlayerHandComponent,
     GameControlsComponent,
     GameInfoComponent,
+    GameResultComponent,
   ],
   templateUrl: './blackjack.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
@@ -37,8 +41,17 @@ export default class BlackjackComponent {
   balance = signal(0);
   currentGameId = signal<number | undefined>(undefined);
   gameInProgress = signal(false);
+  gameState = signal<GameState>(GameState.IN_PROGRESS);
+  showGameResult = signal(false);
+
+  isActionInProgress = signal(false);
+  currentAction = signal<string>('');
 
   constructor() {
+    this.refreshUserBalance();
+  }
+
+  private refreshUserBalance(): void {
     this.userService.getCurrentUser().subscribe((user) => {
       this.balance.set(user?.balance ?? 0);
     });
@@ -48,12 +61,15 @@ export default class BlackjackComponent {
     console.log('Game state update:', game);
     this.currentGameId.set(game.id);
     this.currentBet.set(game.bet);
-    this.gameInProgress.set(game.state === 'IN_PROGRESS');
+    this.gameInProgress.set(game.state === GameState.IN_PROGRESS);
+    this.gameState.set(game.state as GameState);
+
+    const isGameOver = game.state !== GameState.IN_PROGRESS;
 
     this.dealerCards.set(
       game.dealerCards.map((card, index) => ({
         ...card,
-        hidden: index === 1 && game.state === 'IN_PROGRESS',
+        hidden: !isGameOver && index === 1 && game.state === GameState.IN_PROGRESS,
       }))
     );
 
@@ -63,41 +79,136 @@ export default class BlackjackComponent {
         hidden: false,
       }))
     );
+
+    if (isGameOver) {
+      console.log('Game is over, state:', game.state);
+      this.userService.refreshCurrentUser();
+      this.showGameResult.set(true);
+      console.log('Game result dialog should be shown now');
+    }
   }
 
   onNewGame(bet: number): void {
+    this.isActionInProgress.set(true);
+    this.currentAction.set('Spiel wird gestartet...');
+
     this.blackjackService.startGame(bet).subscribe({
       next: (game) => {
         this.updateGameState(game);
+        this.userService.refreshCurrentUser();
+        this.isActionInProgress.set(false);
       },
       error: (error) => {
         console.error('Failed to start game:', error);
+        this.isActionInProgress.set(false);
       },
     });
   }
 
   onHit(): void {
-    if (!this.currentGameId()) return;
+    if (!this.currentGameId() || this.isActionInProgress()) return;
+
+    this.isActionInProgress.set(true);
+    this.currentAction.set('Karte wird gezogen...');
 
     this.blackjackService.hit(this.currentGameId()!).subscribe({
       next: (game) => {
         this.updateGameState(game);
+        if (game.state !== 'IN_PROGRESS') {
+          this.userService.refreshCurrentUser();
+        }
+        this.isActionInProgress.set(false);
       },
       error: (error) => {
         console.error('Failed to hit:', error);
+        this.handleGameError(error);
+        this.isActionInProgress.set(false);
       },
     });
   }
 
   onStand(): void {
-    if (!this.currentGameId()) return;
+    if (!this.currentGameId() || this.isActionInProgress()) return;
+
+    if (this.gameState() !== GameState.IN_PROGRESS) {
+      console.log('Cannot stand: game is not in progress');
+      return;
+    }
+
+    this.isActionInProgress.set(true);
+    this.currentAction.set('Dealer zieht Karten...');
 
     this.blackjackService.stand(this.currentGameId()!).subscribe({
       next: (game) => {
         this.updateGameState(game);
+        this.userService.refreshCurrentUser();
+        this.isActionInProgress.set(false);
       },
       error: (error) => {
         console.error('Failed to stand:', error);
+        this.handleGameError(error);
+        this.isActionInProgress.set(false);
+      },
+    });
+  }
+
+  onDoubleDown(): void {
+    if (!this.currentGameId() || this.isActionInProgress()) return;
+
+    if (this.gameState() !== GameState.IN_PROGRESS || this.playerCards().length !== 2) {
+      console.log('Cannot double down: game is not in progress or more than 2 cards');
+      return;
+    }
+
+    this.isActionInProgress.set(true);
+    this.currentAction.set('Einsatz wird verdoppelt...');
+
+    this.blackjackService.doubleDown(this.currentGameId()!).subscribe({
+      next: (game) => {
+        this.updateGameState(game);
+        this.userService.refreshCurrentUser();
+        this.isActionInProgress.set(false);
+      },
+      error: (error) => {
+        console.error('Failed to double down:', error);
+        this.handleGameError(error);
+        this.isActionInProgress.set(false);
+      },
+    });
+  }
+
+  onCloseGameResult(): void {
+    console.log('Closing game result dialog');
+    this.showGameResult.set(false);
+  }
+
+  private handleGameError(error: HttpErrorResponse): void {
+    if (error instanceof HttpErrorResponse) {
+      if (error.status === 400 && error.error?.error === 'Invalid state') {
+        this.gameInProgress.set(false);
+
+        this.refreshUserBalance();
+      } else if (error.status === 500) {
+        console.log('Server error occurred. The game may have been updated in another session.');
+
+        this.gameInProgress.set(false);
+
+        this.refreshUserBalance();
+
+        if (this.currentGameId()) {
+          this.refreshGameState(this.currentGameId()!);
+        }
+      }
+    }
+  }
+
+  private refreshGameState(gameId: number): void {
+    this.blackjackService.getGame(gameId).subscribe({
+      next: (game) => {
+        this.updateGameState(game);
+      },
+      error: (err) => {
+        console.error('Failed to refresh game state:', err);
       },
     });
   }

frontend/src/app/feature/game/blackjack/components/dealer-hand/dealer-hand.component.ts

@@ -1,7 +1,7 @@
-import { ChangeDetectionStrategy, Component, Input } from '@angular/core';
+import { ChangeDetectionStrategy, Component, Input, OnChanges, SimpleChanges } from '@angular/core';
 import { CommonModule } from '@angular/common';
+import { Card } from '@blackjack/models/blackjack.model';
 import { PlayingCardComponent } from '../playing-card/playing-card.component';
-import { Card } from '../../models/blackjack.model';
 
 @Component({
   selector: 'app-dealer-hand',
@@ -13,11 +13,12 @@ import { Card } from '../../models/blackjack.model';
       <div class="card p-6 !bg-accent-red">
         <div class="flex justify-center gap-4 min-h-[160px] p-4 border-2 border-red-400 rounded-lg">
           @if (cards.length > 0) {
-            @for (card of cards; track card) {
+            @for (card of cardsWithState; track card.id) {
               <app-playing-card
                 [rank]="card.rank"
                 [suit]="card.suit"
                 [hidden]="card.hidden"
+                [isNew]="card.isNew"
               ></app-playing-card>
             }
           } @else {
@@ -31,6 +32,31 @@ import { Card } from '../../models/blackjack.model';
   `,
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class DealerHandComponent {
+export class DealerHandComponent implements OnChanges {
   @Input() cards: Card[] = [];
+  cardsWithState: (Card & { isNew: boolean; id: string })[] = [];
+
+  private lastCardCount = 0;
+
+  ngOnChanges(changes: SimpleChanges): void {
+    if (changes['cards']) {
+      this.updateCardsWithState();
+    }
+  }
+
+  private updateCardsWithState(): void {
+    const newCards = this.cards.length > this.lastCardCount;
+
+    this.cardsWithState = this.cards.map((card, index) => {
+      const isNew = newCards && index >= this.lastCardCount;
+
+      return {
+        ...card,
+        isNew,
+        id: `${card.suit}-${card.rank}-${index}`,
+      };
+    });
+
+    this.lastCardCount = this.cards.length;
+  }
 }

frontend/src/app/feature/game/blackjack/components/game-controls/game-controls.component.ts

@@ -1,36 +1,100 @@
-import { ChangeDetectionStrategy, Component, EventEmitter, Output } from '@angular/core';
+import { ChangeDetectionStrategy, Component, EventEmitter, Input, Output } from '@angular/core';
 import { CommonModule } from '@angular/common';
+import { GameState } from '@blackjack/enum/gameState';
+import { Card } from '@blackjack/models/blackjack.model';
+import { GameControlsService } from '@blackjack/services/game-controls.service';
 
 @Component({
   selector: 'app-game-controls',
   standalone: true,
   imports: [CommonModule],
   template: `
-    <div class="flex justify-center gap-4">
+    <div class="flex flex-col gap-4">
-      <button
+      <div class="flex justify-center text-lg mb-5">
-        (click)="hit.emit()"
+        <div class="card p-4">
-        class="button-primary px-8 py-4 text-lg font-medium min-w-[120px]"
+          <div class="text-emerald font-bold mb-1">
-      >
+            Deine Punkte: {{ gameControlsService.calculateHandValue(playerCards) }}
-        Ziehen
+          </div>
-      </button>
+          <div class="text-text-secondary">
-      <button
+            Status:
-        (click)="stand.emit()"
+            <span [class]="gameControlsService.getStatusClass(gameState)">{{
-        class="button-primary px-8 py-4 text-lg font-medium min-w-[120px]"
+              gameControlsService.getStatusText(gameState)
-      >
+            }}</span>
-        Halten
+          </div>
-      </button>
+        </div>
-      <button
+      </div>
-        (click)="leave.emit()"
+      <div class="flex justify-center gap-4">
-        class="bg-accent-red hover:bg-accent-red/80 px-8 py-4 rounded text-lg font-medium min-w-[120px] transition-all duration-300"
+        <button
-      >
+          (click)="hit.emit()"
-        Abbrechen
+          class="button-primary px-8 py-4 text-lg font-medium min-w-[120px] relative"
-      </button>
+          [disabled]="gameState !== GameState.IN_PROGRESS || isActionInProgress"
+          [class.opacity-50]="isActionInProgress"
+        >
+          <span [class.invisible]="isActionInProgress">Ziehen</span>
+          @if (isActionInProgress) {
+            <div class="absolute inset-0 flex items-center justify-center">
+              <div
+                class="w-4 h-4 border-2 border-white border-t-transparent rounded-full animate-spin"
+              ></div>
+            </div>
+          }
+        </button>
+        <button
+          (click)="stand.emit()"
+          class="button-primary px-8 py-4 text-lg font-medium min-w-[120px] relative"
+          [disabled]="gameState !== GameState.IN_PROGRESS || isActionInProgress"
+          [class.opacity-50]="isActionInProgress"
+        >
+          <span [class.invisible]="isActionInProgress">Halten</span>
+          @if (isActionInProgress) {
+            <div class="absolute inset-0 flex items-center justify-center">
+              <div
+                class="w-4 h-4 border-2 border-white border-t-transparent rounded-full animate-spin"
+              ></div>
+            </div>
+          }
+        </button>
+        <button
+          (click)="doubleDown.emit()"
+          class="button-primary px-8 py-4 text-lg font-medium min-w-[120px] relative"
+          [disabled]="
+            gameState !== GameState.IN_PROGRESS || playerCards.length !== 2 || isActionInProgress
+          "
+          [class.opacity-50]="isActionInProgress"
+        >
+          <span [class.invisible]="isActionInProgress">Verdoppeln</span>
+          @if (isActionInProgress) {
+            <div class="absolute inset-0 flex items-center justify-center">
+              <div
+                class="w-4 h-4 border-2 border-white border-t-transparent rounded-full animate-spin"
+              ></div>
+            </div>
+          }
+        </button>
+        <button
+          (click)="leave.emit()"
+          class="bg-accent-red hover:bg-accent-red/80 px-8 py-4 rounded text-lg font-medium min-w-[120px] transition-all duration-300"
+          [disabled]="isActionInProgress"
+          [class.opacity-50]="isActionInProgress"
+        >
+          Abbrechen
+        </button>
+      </div>
     </div>
   `,
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class GameControlsComponent {
+  @Input() playerCards: Card[] = [];
+  @Input() gameState: GameState = GameState.IN_PROGRESS;
+  @Input() isActionInProgress = false;
+
   @Output() hit = new EventEmitter<void>();
   @Output() stand = new EventEmitter<void>();
+  @Output() doubleDown = new EventEmitter<void>();
   @Output() leave = new EventEmitter<void>();
+
+  protected readonly GameState = GameState;
+
+  constructor(protected gameControlsService: GameControlsService) {}
 }

frontend/src/app/feature/game/blackjack/components/game-info/game-info.component.ts

@@ -18,10 +18,6 @@ import { FormBuilder, FormGroup, ReactiveFormsModule, Validators } from '@angula
     <div class="card p-4">
       <h3 class="section-heading text-xl mb-4">Spiel Informationen</h3>
       <div class="space-y-4">
-        <div class="flex justify-between items-center">
-          <span class="text-text-secondary">Guthaben:</span>
-          <span class="text-emerald">{{ balance | currency: 'EUR' }}</span>
-        </div>
         <div class="flex justify-between items-center">
           <span class="text-text-secondary">Aktuelle Wette:</span>
           <span [class]="currentBet > 0 ? 'text-accent-red' : 'text-text-secondary'">
@@ -86,10 +82,17 @@ import { FormBuilder, FormGroup, ReactiveFormsModule, Validators } from '@angula
           </div>
           <button
             type="submit"
-            class="button-primary w-full py-2"
+            class="button-primary w-full py-2 relative"
-            [disabled]="!betForm.valid || gameInProgress"
+            [disabled]="!betForm.valid || gameInProgress || isActionInProgress"
           >
-            Neues Spiel
+            <span [class.invisible]="isActionInProgress">Neues Spiel</span>
+            @if (isActionInProgress) {
+              <div class="absolute inset-0 flex items-center justify-center">
+                <div
+                  class="w-4 h-4 border-2 border-white border-t-transparent rounded-full animate-spin"
+                ></div>
+              </div>
+            }
           </button>
         </form>
       </div>
@@ -101,6 +104,7 @@ export class GameInfoComponent implements OnChanges {
   @Input() balance = 0;
   @Input() currentBet = 0;
   @Input() gameInProgress = false;
+  @Input() isActionInProgress = false;
   @Output() newGame = new EventEmitter<number>();
 
   betForm: FormGroup;

frontend/src/app/feature/game/blackjack/components/game-result/game-result.component.ts

@@ -0,0 +1,130 @@
+import { ChangeDetectionStrategy, Component, Input, Output, EventEmitter } from '@angular/core';
+import { CommonModule, CurrencyPipe } from '@angular/common';
+import { animate, style, transition, trigger } from '@angular/animations';
+import { GameState } from '../../enum/gameState';
+
+@Component({
+  selector: 'app-game-result',
+  standalone: true,
+  imports: [CommonModule, CurrencyPipe],
+  template: `
+    <div *ngIf="visible" [@fadeInOut] class="modal-bg" style="z-index: 1000; position: fixed;">
+      <div class="modal-card" [@cardAnimation]>
+        <h2 class="modal-heading" [class]="getResultClass()">{{ getResultTitle() }}</h2>
+        <p class="py-2 text-text-secondary mb-4">{{ getResultMessage() }}</p>
+
+        <div
+          class="bg-deep-blue-light/50 rounded-lg p-5 mb-6 shadow-inner border border-deep-blue-light/30"
+        >
+          <div class="grid grid-cols-2 gap-4">
+            <div class="text-text-secondary">Einsatz:</div>
+            <div class="font-medium text-right">{{ amount }} €</div>
+
+            <div class="text-text-secondary">
+              {{ isDraw ? 'Zurückgegeben:' : isWin ? 'Gewonnen:' : 'Verloren:' }}
+            </div>
+            <div
+              class="font-medium text-right"
+              [ngClass]="{
+                'text-emerald': isWin,
+                'text-accent-red': isLoss,
+                'text-yellow-400': isDraw,
+              }"
+            >
+              {{ isLoss ? '-' : '+' }}{{ amount }} €
+            </div>
+
+            <div class="text-text-secondary border-t border-text-secondary/20 pt-3 font-medium">
+              Gesamt:
+            </div>
+            <div
+              class="font-medium text-right border-t border-text-secondary/20 pt-3"
+              [ngClass]="{
+                'text-emerald': isWin,
+                'text-accent-red': isLoss,
+                'text-white': isDraw,
+              }"
+            >
+              {{ isWin ? '+' : isLoss ? '-' : '' }}{{ amount }} €
+            </div>
+          </div>
+        </div>
+
+        <button type="button" (click)="closeDialog()" class="button-primary w-full py-2">
+          Verstanden
+        </button>
+      </div>
+    </div>
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  animations: [
+    trigger('fadeInOut', [
+      transition(':enter', [
+        style({ opacity: 0 }),
+        animate('150ms ease-out', style({ opacity: 1 })),
+      ]),
+      transition(':leave', [animate('150ms ease-in', style({ opacity: 0 }))]),
+    ]),
+    trigger('cardAnimation', [
+      transition(':enter', [
+        style({ opacity: 0, transform: 'scale(0.95)' }),
+        animate('200ms ease-out', style({ opacity: 1, transform: 'scale(1)' })),
+      ]),
+    ]),
+  ],
+})
+export class GameResultComponent {
+  @Input() gameState: GameState = GameState.IN_PROGRESS;
+  @Input() amount = 0;
+  @Input() set show(value: boolean) {
+    console.log('GameResultComponent show input changed:', value, 'gameState:', this.gameState);
+    this.visible = value;
+  }
+
+  @Output() gameResultClosed = new EventEmitter<void>();
+
+  visible = false;
+
+  get isWin(): boolean {
+    return this.gameState === GameState.PLAYER_WON || this.gameState === GameState.PLAYER_BLACKJACK;
+  }
+
+  get isLoss(): boolean {
+    return this.gameState === GameState.PLAYER_LOST;
+  }
+
+  get isDraw(): boolean {
+    return this.gameState === GameState.DRAW;
+  }
+
+  getResultTitle(): string {
+    if (this.gameState === GameState.PLAYER_BLACKJACK) return 'Blackjack!';
+    if (this.isWin) return 'Gewonnen!';
+    if (this.isLoss) return 'Verloren!';
+    if (this.isDraw) return 'Unentschieden!';
+    return '';
+  }
+
+  getResultMessage(): string {
+    if (this.gameState === GameState.PLAYER_BLACKJACK)
+      return 'Glückwunsch! Du hast mit einem Blackjack gewonnen!';
+    if (this.isWin) return 'Glückwunsch! Du hast diese Runde gewonnen.';
+    if (this.isLoss) return 'Schade! Du hast diese Runde verloren.';
+    if (this.isDraw) return 'Diese Runde endet unentschieden. Dein Einsatz wurde zurückgegeben.';
+    return '';
+  }
+
+  getResultClass(): string {
+    if (this.gameState === GameState.PLAYER_BLACKJACK) return 'text-emerald font-bold';
+    if (this.isWin) return 'text-emerald';
+    if (this.isLoss) return 'text-accent-red';
+    if (this.isDraw) return 'text-yellow-400';
+    return '';
+  }
+
+  closeDialog(): void {
+    this.visible = false;
+    this.gameResultClosed.emit();
+    console.log('Dialog closed by user');
+  }
+}

frontend/src/app/feature/game/blackjack/components/player-hand/player-hand.component.ts

@@ -1,7 +1,7 @@
-import { ChangeDetectionStrategy, Component, Input } from '@angular/core';
+import { ChangeDetectionStrategy, Component, Input, OnChanges, SimpleChanges } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { PlayingCardComponent } from '../playing-card/playing-card.component';
-import { Card } from '../../models/blackjack.model';
+import { Card } from '@blackjack/models/blackjack.model';
 
 @Component({
   selector: 'app-player-hand',
@@ -15,11 +15,12 @@ import { Card } from '../../models/blackjack.model';
           class="flex justify-center gap-4 min-h-[160px] p-4 border-2 border-emerald-400 rounded-lg"
         >
           @if (cards.length > 0) {
-            @for (card of cards; track card) {
+            @for (card of cardsWithState; track card.id) {
               <app-playing-card
                 [rank]="card.rank"
                 [suit]="card.suit"
                 [hidden]="card.hidden"
+                [isNew]="card.isNew"
               ></app-playing-card>
             }
           } @else {
@@ -33,6 +34,31 @@ import { Card } from '../../models/blackjack.model';
   `,
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class PlayerHandComponent {
+export class PlayerHandComponent implements OnChanges {
   @Input() cards: Card[] = [];
+  cardsWithState: (Card & { isNew: boolean; id: string })[] = [];
+
+  private lastCardCount = 0;
+
+  ngOnChanges(changes: SimpleChanges): void {
+    if (changes['cards']) {
+      this.updateCardsWithState();
+    }
+  }
+
+  private updateCardsWithState(): void {
+    const newCards = this.cards.length > this.lastCardCount;
+
+    this.cardsWithState = this.cards.map((card, index) => {
+      const isNew = newCards && index >= this.lastCardCount;
+
+      return {
+        ...card,
+        isNew,
+        id: `${card.suit}-${card.rank}-${index}`,
+      };
+    });
+
+    this.lastCardCount = this.cards.length;
+  }
 }

frontend/src/app/feature/game/blackjack/components/playing-card/playing-card.component.ts

@@ -1,6 +1,15 @@
-import { ChangeDetectionStrategy, Component, Input } from '@angular/core';
+import {
+  ChangeDetectionStrategy,
+  Component,
+  Input,
+  AfterViewInit,
+  ElementRef,
+  OnChanges,
+  SimpleChanges,
+} from '@angular/core';
 import { CommonModule } from '@angular/common';
-import { suitSymbols, Suit } from '../../models/blackjack.model';
+import { gsap } from 'gsap';
+import { Suit, suitSymbols } from '@blackjack/models/blackjack.model';
 
 @Component({
   selector: 'app-playing-card',
@@ -8,31 +17,96 @@ import { suitSymbols, Suit } from '../../models/blackjack.model';
   imports: [CommonModule],
   template: `
     <div
-      class="w-24 h-36 rounded-lg p-2 relative flex flex-col justify-between shadow-lg"
+      #cardElement
+      class="w-24 h-36 rounded-lg p-2 relative flex flex-col justify-between shadow-lg card-element"
       [class]="hidden ? 'bg-red-800' : 'bg-white'"
     >
       @if (!hidden) {
-        <span class="text-xl font-bold text-accent-red">{{ getDisplayRank(rank) }}</span>
+        <span class="text-xl font-bold" [class]="isRedSuit ? 'text-accent-red' : 'text-black'">{{
+          getDisplayRank(rank)
+        }}</span>
       }
       @if (!hidden) {
         <span
-          class="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 text-3xl text-accent-red"
+          class="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 text-3xl"
+          [class]="isRedSuit ? 'text-accent-red' : 'text-black'"
           >{{ getSuitSymbol(suit) }}</span
         >
       }
       @if (!hidden) {
-        <span class="text-xl font-bold text-accent-red self-end rotate-180">{{
+        <span
-          getDisplayRank(rank)
+          class="text-xl font-bold self-end rotate-180"
-        }}</span>
+          [class]="isRedSuit ? 'text-accent-red' : 'text-black'"
+          >{{ getDisplayRank(rank) }}</span
+        >
       }
     </div>
   `,
+  styles: [
+    `
+      .card-element {
+        transform-style: preserve-3d;
+        backface-visibility: hidden;
+      }
+    `,
+  ],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class PlayingCardComponent {
+export class PlayingCardComponent implements AfterViewInit, OnChanges {
   @Input({ required: true }) rank!: string;
   @Input({ required: true }) suit!: Suit;
   @Input({ required: true }) hidden!: boolean;
+  @Input() isNew = false;
+
+  constructor(private elementRef: ElementRef) {}
+
+  get isRedSuit(): boolean {
+    return this.suit === 'HEARTS' || this.suit === 'DIAMONDS';
+  }
+
+  ngAfterViewInit(): void {
+    if (this.isNew) {
+      this.animateNewCard();
+    }
+  }
+
+  ngOnChanges(changes: SimpleChanges): void {
+    if (changes['hidden'] && !changes['hidden'].firstChange) {
+      this.animateCardFlip();
+    }
+  }
+
+  private animateNewCard(): void {
+    const cardElement = this.elementRef.nativeElement.querySelector('.card-element');
+    gsap.fromTo(
+      cardElement,
+      {
+        y: -100,
+        opacity: 0,
+        rotation: -10,
+        scale: 0.7,
+      },
+      {
+        y: 0,
+        opacity: 1,
+        rotation: 0,
+        scale: 1,
+        duration: 0.5,
+        ease: 'power2.out',
+      }
+    );
+  }
+
+  private animateCardFlip(): void {
+    const cardElement = this.elementRef.nativeElement.querySelector('.card-element');
+    gsap.to(cardElement, {
+      rotationY: 180,
+      duration: 0.3,
+      onComplete: () => {
+        gsap.set(cardElement, { rotationY: 0 });
+      },
+    });
+  }
 
   protected getSuitSymbol(suit: Suit): string {
     return suitSymbols[suit];

frontend/src/app/feature/game/blackjack/enum/gameState.ts

@@ -0,0 +1,7 @@
+export enum GameState {
+  PLAYER_WON = 'PLAYER_WON',
+  IN_PROGRESS = 'IN_PROGRESS',
+  PLAYER_LOST = 'PLAYER_LOST',
+  DRAW = 'DRAW',
+  PLAYER_BLACKJACK = 'PLAYER_BLACKJACK',
+}

frontend/src/app/feature/game/blackjack/services/blackjack.service.ts

@@ -1,7 +1,7 @@
 import { Injectable, inject } from '@angular/core';
 import { HttpClient } from '@angular/common/http';
 import { Observable, catchError } from 'rxjs';
-import { BlackjackGame } from '../models/blackjack.model';
+import { BlackjackGame } from '@blackjack/models/blackjack.model';
 
 @Injectable({
   providedIn: 'root',
@@ -41,4 +41,26 @@ export class BlackjackService {
         })
       );
   }
+
+  doubleDown(gameId: number): Observable<BlackjackGame> {
+    return this.http
+      .post<BlackjackGame>(`/backend/blackjack/${gameId}/doubleDown`, {}, { responseType: 'json' })
+      .pipe(
+        catchError((error) => {
+          console.error('Double Down error:', error);
+          throw error;
+        })
+      );
+  }
+
+  getGame(gameId: number): Observable<BlackjackGame> {
+    return this.http
+      .get<BlackjackGame>(`/backend/blackjack/${gameId}`, { responseType: 'json' })
+      .pipe(
+        catchError((error) => {
+          console.error('Get game error:', error);
+          throw error;
+        })
+      );
+  }
 }

frontend/src/app/feature/game/blackjack/services/game-controls.service.ts

@@ -0,0 +1,74 @@
+import { Injectable } from '@angular/core';
+import { Card } from '../models/blackjack.model';
+import { GameState } from '../enum/gameState';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class GameControlsService {
+  calculateHandValue(cards: Card[]): number {
+    let sum = 0;
+    let aceCount = 0;
+
+    const rankValues: Record<string, number> = {
+      TWO: 2,
+      THREE: 3,
+      FOUR: 4,
+      FIVE: 5,
+      SIX: 6,
+      SEVEN: 7,
+      EIGHT: 8,
+      NINE: 9,
+      TEN: 10,
+      JACK: 10,
+      QUEEN: 10,
+      KING: 10,
+      ACE: 11,
+    };
+
+    for (const card of cards) {
+      if (!card.hidden) {
+        const value = rankValues[card.rank] || 0;
+        sum += value;
+        if (card.rank === 'ACE') {
+          aceCount++;
+        }
+      }
+    }
+
+    while (sum > 21 && aceCount > 0) {
+      sum -= 10;
+      aceCount--;
+    }
+
+    return sum;
+  }
+
+  getStatusText(state: GameState): string {
+    switch (state) {
+      case GameState.IN_PROGRESS:
+        return 'Spiel läuft';
+      case GameState.PLAYER_WON:
+        return 'Gewonnen!';
+      case GameState.PLAYER_LOST:
+        return 'Verloren!';
+      case GameState.DRAW:
+        return 'Unentschieden!';
+      default:
+        return state;
+    }
+  }
+
+  getStatusClass(state: GameState): string {
+    switch (state) {
+      case GameState.PLAYER_WON:
+        return 'text-emerald';
+      case GameState.PLAYER_LOST:
+        return 'text-accent-red';
+      case GameState.DRAW:
+        return 'text-yellow-400';
+      default:
+        return 'text-white';
+    }
+  }
+}

frontend/src/app/feature/home/home.component.ts

@@ -1,11 +1,11 @@
 import { ChangeDetectionStrategy, Component, OnInit } from '@angular/core';
-import { NavbarComponent } from '../../shared/components/navbar/navbar.component';
 import { CurrencyPipe, NgFor } from '@angular/common';
-import { Game } from '../../model/Game';
-import { Transaction } from '../../model/Transaction';
 import { DepositComponent } from '../deposit/deposit.component';
-import { ConfirmationComponent } from '../../shared/components/confirmation/confirmation.component';
 import { ActivatedRoute, Router } from '@angular/router';
+import { ConfirmationComponent } from '@shared/components/confirmation/confirmation.component';
+import { Transaction } from 'app/model/Transaction';
+import { NavbarComponent } from '@shared/components/navbar/navbar.component';
+import { Game } from 'app/model/Game';
 
 @Component({
   selector: 'app-homepage',

frontend/src/app/feature/landing/landing.component.ts

@@ -1,6 +1,6 @@
 import { ChangeDetectionStrategy, Component, OnInit, OnDestroy } from '@angular/core';
-import { NavbarComponent } from '../../shared/components/navbar/navbar.component';
 import { NgFor } from '@angular/common';
+import { NavbarComponent } from '@shared/components/navbar/navbar.component';
 
 @Component({
   selector: 'app-landing-page',

frontend/src/app/feature/login-success/login-success.component.ts

@@ -1,7 +1,7 @@
 import { ChangeDetectionStrategy, Component, inject, OnInit } from '@angular/core';
-import { UserService } from '../../service/user.service';
 import { KeycloakService } from 'keycloak-angular';
 import { Router } from '@angular/router';
+import { UserService } from '@service/user.service';
 
 @Component({
   selector: 'app-login-success',

frontend/src/app/service/user.service.ts

@@ -1,7 +1,7 @@
 import { inject, Injectable } from '@angular/core';
 import { HttpClient } from '@angular/common/http';
 import { KeycloakProfile } from 'keycloak-js';
-import { catchError, EMPTY, Observable } from 'rxjs';
+import { BehaviorSubject, catchError, EMPTY, Observable, tap } from 'rxjs';
 import { User } from '../model/User';
 
 @Injectable({
@@ -9,20 +9,39 @@ import { User } from '../model/User';
 })
 export class UserService {
   private http: HttpClient = inject(HttpClient);
+  private currentUserSubject = new BehaviorSubject<User | null>(null);
+  public currentUser$ = this.currentUserSubject.asObservable();
+
+  constructor() {
+    // Initialize with current user data
+    this.getCurrentUser().subscribe();
+  }
 
   public getUser(id: string): Observable<User | null> {
-    return this.http.get<User | null>(`/backend/user/${id}`).pipe(catchError(() => EMPTY));
+    return this.http.get<User | null>(`/backend/user/${id}`).pipe(
+      catchError(() => EMPTY),
+      tap((user) => this.currentUserSubject.next(user))
+    );
   }
 
   public getCurrentUser(): Observable<User | null> {
-    return this.http.get<User | null>('/backend/user').pipe(catchError(() => EMPTY));
+    return this.http.get<User | null>('/backend/user').pipe(
+      catchError(() => EMPTY),
+      tap((user) => this.currentUserSubject.next(user))
+    );
+  }
+
+  public refreshCurrentUser(): void {
+    this.getCurrentUser().subscribe();
   }
 
   public createUser(id: string, username: string): Observable<User> {
-    return this.http.post<User>('/backend/user', {
+    return this.http
-      keycloakId: id,
+      .post<User>('/backend/user', {
-      username: username,
+        keycloakId: id,
-    });
+        username: username,
+      })
+      .pipe(tap((user) => this.currentUserSubject.next(user)));
   }
 
   public async getOrCreateUser(userProfile: KeycloakProfile) {

frontend/src/app/shared/components/confirmation/confirmation.component.ts

@@ -8,7 +8,7 @@ import {
   AfterViewInit,
   OnDestroy,
 } from '@angular/core';
-import { ModalAnimationService } from '../../services/modal-animation.service';
+import { ModalAnimationService } from '@shared/services/modal-animation.service';
 import gsap from 'gsap';
 
 @Component({

frontend/src/app/shared/components/navbar/navbar.component.html

@@ -18,7 +18,7 @@
           <div
             class="text-white font-bold bg-deep-blue-contrast rounded-full px-4 py-2 text-sm hover:bg-deep-blue-contrast/80 hover:cursor-pointer hover:scale-105 transition-all active:scale-95 select-none duration-300"
           >
-            <span>Guthaben: {{ balance() | currency: 'EUR' : 'symbol' : '1.2-2' }}</span>
+            <span>{{ balance() | currency: 'EUR' : 'symbol' : '1.2-2' }}</span>
           </div>
           <button (click)="logout()" class="button-primary px-4 py-1.5">Abmelden</button>
         }

frontend/src/app/shared/components/navbar/navbar.component.ts

@@ -1,9 +1,17 @@
-import { ChangeDetectionStrategy, Component, inject, OnInit, signal } from '@angular/core';
+import {
+  ChangeDetectionStrategy,
+  Component,
+  inject,
+  OnInit,
+  OnDestroy,
+  signal,
+} from '@angular/core';
 import { RouterModule } from '@angular/router';
 import { KeycloakService } from 'keycloak-angular';
-import { UserService } from '../../../service/user.service';
-
 import { CurrencyPipe } from '@angular/common';
+import { UserService } from '@service/user.service';
+import { Subscription } from 'rxjs';
+
 @Component({
   selector: 'app-navbar',
   templateUrl: './navbar.component.html',
@@ -11,22 +19,27 @@ import { CurrencyPipe } from '@angular/common';
   imports: [RouterModule, CurrencyPipe],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class NavbarComponent implements OnInit {
+export class NavbarComponent implements OnInit, OnDestroy {
   isMenuOpen = false;
   private keycloakService: KeycloakService = inject(KeycloakService);
   isLoggedIn = this.keycloakService.isLoggedIn();
 
   private userService = inject(UserService);
-  private user = this.userService.getCurrentUser();
+  private userSubscription: Subscription | undefined;
-
   public balance = signal(0);
 
   ngOnInit() {
-    this.user.subscribe((user) => {
+    this.userSubscription = this.userService.currentUser$.subscribe((user) => {
       this.balance.set(user?.balance ?? 0);
     });
   }
 
+  ngOnDestroy() {
+    if (this.userSubscription) {
+      this.userSubscription.unsubscribe();
+    }
+  }
+
   login() {
     try {
       const baseUrl = window.location.origin;

frontend/tsconfig.json

@@ -3,6 +3,13 @@
 {
   "compileOnSave": false,
   "compilerOptions": {
+    "baseUrl": "./src",
+    "paths": {
+      "@service/*": ["app/service/*"],
+      "@environments/*": ["environments/*"],
+      "@shared/*": ["app/shared/*"],
+      "@blackjack/*": ["app/feature/game/blackjack/*"]
+    },
     "outDir": "./dist/out-tsc",
     "strict": true,
     "noImplicitOverride": true,