refactor(lottery): improve code structure and readability

backend/src/main/java/de/szut/casino/lootboxes/LootBoxController.java

@@ -1,91 +1,91 @@
-package de.szut.casino.lootboxes;
-
-import de.szut.casino.exceptionHandling.exceptions.InsufficientFundsException;
-import de.szut.casino.exceptionHandling.exceptions.UserNotFoundException;
-import de.szut.casino.user.UserEntity;
-import de.szut.casino.user.UserService;
-import jakarta.validation.Valid;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-import java.util.Optional;
-
-@RestController
-public class LootBoxController {
-    private final LootBoxRepository lootBoxRepository;
-    private final UserService userService;
-    private final LootBoxService lootBoxService;
-
-    public LootBoxController(LootBoxRepository lootBoxRepository, UserService userService, LootBoxService lootBoxService) {
-        this.lootBoxRepository = lootBoxRepository;
-        this.userService = userService;
-        this.lootBoxService = lootBoxService;
-    }
-
-    @GetMapping("/lootboxes")
-    public List<LootBoxEntity> getAllLootBoxes() {
-        return lootBoxRepository.findAll();
-    }
-
-    @PostMapping("/lootboxes/{id}")
-    public ResponseEntity<Object> purchaseLootBox(@PathVariable Long id) {
-        Optional<LootBoxEntity> optionalLootBox = lootBoxRepository.findById(id);
-        if (optionalLootBox.isEmpty()) {
-            return ResponseEntity.notFound().build();
-        }
-
-        LootBoxEntity lootBox = optionalLootBox.get();
-
-        Optional<UserEntity> optionalUser = userService.getCurrentUser();
-        if (optionalUser.isEmpty()) {
-            throw new UserNotFoundException();
-        }
-
-        UserEntity user = optionalUser.get();
-
-        if (lootBoxService.hasSufficientBalance(user, lootBox.getPrice())) {
-            throw new InsufficientFundsException();
-        }
-
-        RewardEntity reward = lootBoxService.determineReward(lootBox);
-        lootBoxService.handleBalance(user, lootBox, reward);
-
-        return ResponseEntity.ok(reward);
-    }
-
-    @PostMapping("/lootboxes")
-    public ResponseEntity<Object> createLootbox(@RequestBody @Valid CreateLootBoxDto createLootBoxDto) {
-        List<RewardEntity> rewardEntities = new ArrayList<>();
-
-        for (CreateRewardDto createRewardDto : createLootBoxDto.getRewards()) {
-            rewardEntities.add(new RewardEntity(createRewardDto.getValue(), createRewardDto.getProbability()));
-        }
-
-        LootBoxEntity lootBoxEntity = new LootBoxEntity(
-                createLootBoxDto.getName(),
-                createLootBoxDto.getPrice(),
-                rewardEntities
-        );
-
-        this.lootBoxRepository.save(lootBoxEntity);
-
-        return ResponseEntity.ok(lootBoxEntity);
-    }
-
-    @DeleteMapping("/lootboxes/{id}")
-    public ResponseEntity<Object> deleteLootbox(@PathVariable Long id) {
-        Optional<LootBoxEntity> optionalLootBox = lootBoxRepository.findById(id);
-        if (optionalLootBox.isEmpty()) {
-            return ResponseEntity.notFound().build();
-        }
-
-        LootBoxEntity lootBox = optionalLootBox.get();
-        lootBoxRepository.delete(lootBox);
-
-        return ResponseEntity.ok(Collections.singletonMap("message", "successfully deleted lootbox"));
-    }
-
-}
+package de.szut.casino.lootboxes;
+
+import de.szut.casino.exceptionHandling.exceptions.InsufficientFundsException;
+import de.szut.casino.exceptionHandling.exceptions.UserNotFoundException;
+import de.szut.casino.user.UserEntity;
+import de.szut.casino.user.UserService;
+import jakarta.validation.Valid;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+
+@RestController
+public class LootBoxController {
+    private final LootBoxRepository lootBoxRepository;
+    private final UserService userService;
+    private final LootBoxService lootBoxService;
+
+    public LootBoxController(LootBoxRepository lootBoxRepository, UserService userService, LootBoxService lootBoxService) {
+        this.lootBoxRepository = lootBoxRepository;
+        this.userService = userService;
+        this.lootBoxService = lootBoxService;
+    }
+
+    @GetMapping("/lootboxes")
+    public List<LootBoxEntity> getAllLootBoxes() {
+        return lootBoxRepository.findAll();
+    }
+
+    @PostMapping("/lootboxes/{id}")
+    public ResponseEntity<Object> purchaseLootBox(@PathVariable Long id) {
+        Optional<LootBoxEntity> optionalLootBox = lootBoxRepository.findById(id);
+        if (optionalLootBox.isEmpty()) {
+            return ResponseEntity.notFound().build();
+        }
+
+        LootBoxEntity lootBox = optionalLootBox.get();
+
+        Optional<UserEntity> optionalUser = userService.getCurrentUser();
+        if (optionalUser.isEmpty()) {
+            throw new UserNotFoundException();
+        }
+
+        UserEntity user = optionalUser.get();
+
+        if (lootBoxService.hasSufficientBalance(user, lootBox.getPrice())) {
+            throw new InsufficientFundsException();
+        }
+
+        RewardEntity reward = lootBoxService.determineReward(lootBox);
+        lootBoxService.handleBalance(user, lootBox, reward);
+
+        return ResponseEntity.ok(reward);
+    }
+
+    @PostMapping("/lootboxes")
+    public ResponseEntity<Object> createLootbox(@RequestBody @Valid CreateLootBoxDto createLootBoxDto) {
+        List<RewardEntity> rewardEntities = new ArrayList<>();
+
+        for (CreateRewardDto createRewardDto : createLootBoxDto.getRewards()) {
+            rewardEntities.add(new RewardEntity(createRewardDto.getValue(), createRewardDto.getProbability()));
+        }
+
+        LootBoxEntity lootBoxEntity = new LootBoxEntity(
+                createLootBoxDto.getName(),
+                createLootBoxDto.getPrice(),
+                rewardEntities
+        );
+
+        this.lootBoxRepository.save(lootBoxEntity);
+
+        return ResponseEntity.ok(lootBoxEntity);
+    }
+
+    @DeleteMapping("/lootboxes/{id}")
+    public ResponseEntity<Object> deleteLootbox(@PathVariable Long id) {
+        Optional<LootBoxEntity> optionalLootBox = lootBoxRepository.findById(id);
+        if (optionalLootBox.isEmpty()) {
+            return ResponseEntity.notFound().build();
+        }
+
+        LootBoxEntity lootBox = optionalLootBox.get();
+        lootBoxRepository.delete(lootBox);
+
+        return ResponseEntity.ok(Collections.singletonMap("message", "successfully deleted lootbox"));
+    }
+
+}

backend/src/main/java/de/szut/casino/lootboxes/LootBoxService.java

@@ -1,40 +1,40 @@
-package de.szut.casino.lootboxes;
-
-import de.szut.casino.user.UserEntity;
-import de.szut.casino.user.UserRepository;
-import org.springframework.stereotype.Service;
-
-import java.math.BigDecimal;
-
-@Service
-public class LootBoxService {
-    private final UserRepository userRepository;
-
-    public LootBoxService(UserRepository userRepository) {
-        this.userRepository = userRepository;
-    }
-
-    public boolean hasSufficientBalance(UserEntity user, BigDecimal price) {
-        return user.getBalance().compareTo(price) < 0;
-    }
-
-    public RewardEntity determineReward(LootBoxEntity lootBox) {
-        double randomValue = Math.random();
-        BigDecimal cumulativeProbability = BigDecimal.ZERO;
-
-        for (RewardEntity reward : lootBox.getRewards()) {
-            cumulativeProbability = cumulativeProbability.add(reward.getProbability());
-            if (randomValue <= cumulativeProbability.doubleValue()) {
-                return reward;
-            }
-        }
-
-        return lootBox.getRewards().getLast();
-    }
-
-    public void handleBalance(UserEntity user, LootBoxEntity lootBox, RewardEntity reward) {
-        user.setBalance(user.getBalance().subtract(lootBox.getPrice()));
-        user.setBalance(user.getBalance().add(reward.getValue()));
-        userRepository.save(user);
-    }
-}
+package de.szut.casino.lootboxes;
+
+import de.szut.casino.user.UserEntity;
+import de.szut.casino.user.UserRepository;
+import org.springframework.stereotype.Service;
+
+import java.math.BigDecimal;
+
+@Service
+public class LootBoxService {
+    private final UserRepository userRepository;
+
+    public LootBoxService(UserRepository userRepository) {
+        this.userRepository = userRepository;
+    }
+
+    public boolean hasSufficientBalance(UserEntity user, BigDecimal price) {
+        return user.getBalance().compareTo(price) < 0;
+    }
+
+    public RewardEntity determineReward(LootBoxEntity lootBox) {
+        double randomValue = Math.random();
+        BigDecimal cumulativeProbability = BigDecimal.ZERO;
+
+        for (RewardEntity reward : lootBox.getRewards()) {
+            cumulativeProbability = cumulativeProbability.add(reward.getProbability());
+            if (randomValue <= cumulativeProbability.doubleValue()) {
+                return reward;
+            }
+        }
+
+        return lootBox.getRewards().getLast();
+    }
+
+    public void handleBalance(UserEntity user, LootBoxEntity lootBox, RewardEntity reward) {
+        user.setBalance(user.getBalance().subtract(lootBox.getPrice()));
+        user.setBalance(user.getBalance().add(reward.getValue()));
+        userRepository.save(user);
+    }
+}

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

@@ -51,11 +51,19 @@ export default class BlackjackComponent implements OnInit {
   debtAmount = signal(0);
 
   ngOnInit(): void {
+    // Initial user load from server
     this.userService.getCurrentUser().subscribe((user) => {
       if (user) {
         this.balance.set(user.balance);
       }
     });
+    
+    // Subscribe to user updates for real-time balance changes
+    this.userService.currentUser$.subscribe((user) => {
+      if (user) {
+        this.balance.set(user.balance);
+      }
+    });
   }
 
   private updateGameState(game: BlackjackGame) {
@@ -84,9 +92,19 @@ export default class BlackjackComponent implements OnInit {
     if (isGameOver) {
       console.log('Game is over, state:', game.state);
       this.userService.refreshCurrentUser();
-      timer(1500).subscribe(() => {
-        this.showGameResult.set(true);
-        console.log('Game result dialog shown after delay');
+      
+      // Get the latest balance before showing the result dialog
+      timer(1000).subscribe(() => {
+        this.userService.getCurrentUser().subscribe((user) => {
+          if (user) {
+            this.balance.set(user.balance);
+            // Show the result dialog after updating the balance
+            timer(500).subscribe(() => {
+              this.showGameResult.set(true);
+              console.log('Game result dialog shown after delay');
+            });
+          }
+        });
       });
     }
   }
@@ -165,12 +183,20 @@ export default class BlackjackComponent implements OnInit {
     this.blackjackService.doubleDown(this.currentGameId()!).subscribe({
       next: (game) => {
         this.updateGameState(game);
-        this.userService.getCurrentUser().subscribe((user) => {
-          if (user && user.balance < 0) {
-            this.debtAmount.set(Math.abs(user.balance));
-            this.showDebtDialog.set(true);
-          }
+        
+        // Wait a bit to ensure the backend has finished processing
+        timer(1000).subscribe(() => {
+          this.userService.getCurrentUser().subscribe((user) => {
+            if (user) {
+              this.balance.set(user.balance);
+              if (user.balance < 0) {
+                this.debtAmount.set(Math.abs(user.balance));
+                this.showDebtDialog.set(true);
+              }
+            }
+          });
         });
+        
         this.isActionInProgress.set(false);
       },
       error: (error) => {
@@ -184,7 +210,13 @@ export default class BlackjackComponent implements OnInit {
   onCloseGameResult(): void {
     console.log('Closing game result dialog');
     this.showGameResult.set(false);
-    this.userService.refreshCurrentUser();
+    
+    // Refresh the balance when dialog is closed and update local state
+    this.userService.getCurrentUser().subscribe((user) => {
+      if (user) {
+        this.balance.set(user.balance);
+      }
+    });
   }
 
   onCloseDebtDialog(): void {

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

@@ -13,6 +13,19 @@ export class UserService {
   private http: HttpClient = inject(HttpClient);
   private authService = inject(AuthService);
 
+  constructor() {
+    // Initialize with the current user from AuthService if available
+    const currentUser = this.authService.getUser();
+    if (currentUser) {
+      this.currentUserSubject.next(currentUser);
+    }
+
+    // Subscribe to auth service user updates
+    this.authService.userSubject.subscribe(user => {
+      this.currentUserSubject.next(user);
+    });
+  }
+
   public getCurrentUser(): Observable<User | null> {
     return this.http.get<User | null>('/backend/users/me').pipe(
       catchError(() => EMPTY),

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

@@ -10,6 +10,7 @@ import { RouterModule } from '@angular/router';
 import { AuthService } from '@service/auth.service';
 import { Subscription } from 'rxjs';
 import { AnimatedNumberComponent } from '@blackjack/components/animated-number/animated-number.component';
+import { UserService } from '@service/user.service';
 
 @Component({
   selector: 'app-navbar',
@@ -21,9 +22,11 @@ import { AnimatedNumberComponent } from '@blackjack/components/animated-number/a
 export class NavbarComponent implements OnInit, OnDestroy {
   isMenuOpen = false;
   private authService: AuthService = inject(AuthService);
+  private userService: UserService = inject(UserService);
   isLoggedIn = this.authService.isLoggedIn();
 
   private authSubscription!: Subscription;
+  private userSubscription!: Subscription;
   public balance = signal(0);
 
   ngOnInit() {
@@ -32,10 +35,22 @@ export class NavbarComponent implements OnInit, OnDestroy {
         this.balance.set(user?.balance ?? 0);
       },
     });
+
+    // Also subscribe to UserService for real-time balance updates
+    this.userSubscription = this.userService.currentUser$.subscribe({
+      next: (user) => {
+        if (user) {
+          this.balance.set(user.balance);
+        }
+      },
+    });
   }
 
   ngOnDestroy() {
     this.authSubscription.unsubscribe();
+    if (this.userSubscription) {
+      this.userSubscription.unsubscribe();
+    }
   }
 
   logout() {