feat: new spec

src/app/pages/game/game.facade.ts

@@ -18,6 +18,8 @@ export class GameFacade implements OnDestroy {
   loading = true;
   selectedSquare: string | null = null;
   highlightedSquares: string[] = [];
+  gameCompletionMessage = '';
+  isGameFinished = false;
 
   private selectedSquareMoves: LegalMove[] = [];
   private readonly router = inject(Router);
@@ -27,6 +29,48 @@ export class GameFacade implements OnDestroy {
   private pollSubscription: Subscription | null = null;
   private botMoveSubscription: Subscription | null = null;
 
+  private getGameCompletionMessage(): void {
+    if (!this.game || !this.state) {
+      this.gameCompletionMessage = '';
+      this.isGameFinished = false;
+      return;
+    }
+
+    const status = this.state.status;
+    const gameEndingStatuses = ['checkmate', 'stalemate', 'resign', 'draw', 'insufficientMaterial'];
+
+    if (!gameEndingStatuses.includes(status)) {
+      this.gameCompletionMessage = '';
+      this.isGameFinished = false;
+      return;
+    }
+
+    this.isGameFinished = true;
+
+    switch (status) {
+      case 'checkmate':
+        const winner = this.state.winner === 'white' ? this.game.white.displayName : this.game.black.displayName;
+        this.gameCompletionMessage = `Checkmate! ${winner} wins!`;
+        break;
+      case 'stalemate':
+        this.gameCompletionMessage = 'Stalemate! The game is a draw.';
+        break;
+      case 'resign':
+        const resignedPlayer = this.state.winner === 'white' ? this.game.black.displayName : this.game.white.displayName;
+        const resignedWinner = this.state.winner === 'white' ? this.game.white.displayName : this.game.black.displayName;
+        this.gameCompletionMessage = `${resignedPlayer} resigned. ${resignedWinner} wins!`;
+        break;
+      case 'draw':
+        this.gameCompletionMessage = 'Draw! The game ended in a draw.';
+        break;
+      case 'insufficientMaterial':
+        this.gameCompletionMessage = 'Insufficient material! The game is a draw.';
+        break;
+      default:
+        this.gameCompletionMessage = 'Game ended!';
+    }
+  }
+
   ngOnDestroy(): void {
     this.streamSubscription?.unsubscribe();
     this.pollSubscription?.unsubscribe();
@@ -185,6 +229,7 @@ export class GameFacade implements OnDestroy {
         next: (game) => {
           this.game = game;
           this.loading = false;
+          this.getGameCompletionMessage();
           this.startStream();
           this.tryMakeBotMove();
         },
@@ -227,6 +272,7 @@ export class GameFacade implements OnDestroy {
         next: (game) => {
           const previousMoves = this.game?.state.moves.join(',') ?? '';
           this.game = game;
+          this.getGameCompletionMessage();
           if (previousMoves !== game.state.moves.join(',')) {
             this.clearSelection();
             this.tryMakeBotMove();
@@ -239,6 +285,7 @@ export class GameFacade implements OnDestroy {
     if (event.type === 'gameFull') {
       this.game = event.game;
       this.clearSelection();
+      this.getGameCompletionMessage();
       this.tryMakeBotMove();
       return;
     }
@@ -246,6 +293,7 @@ export class GameFacade implements OnDestroy {
     if (event.type === 'gameState' && this.game) {
       const moveCountBefore = this.game.state.moves.length;
       this.game = { ...this.game, state: event.state };
+      this.getGameCompletionMessage();
       if (event.state.moves.length !== moveCountBefore) {
         this.clearSelection();
         this.tryMakeBotMove();