feat: add game state enum and refactor game components

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';
+    }
+  }
+}