fix(lobby): ready status anzeigen und Spielstart absichern

SlipItIn.Server.Tests/GameHubTests.cs

@@ -104,11 +104,18 @@ public class GameHubTests
 
         var game = new Game { Id = 7, LobbyCode = "XYZ789", HostId = user.Id };
         _gameService.Setup(s => s.CreateGameAsync(user.Id, ConnectionId)).ReturnsAsync(game);
+        _gameService.Setup(s => s.GetGameStateAsync(game.Id)).ReturnsAsync(new GameStateDto
+        {
+            GameId = game.Id,
+            LobbyCode = game.LobbyCode,
+            Players = [new PlayerInfoDto { Username = user.Username }]
+        });
 
         await _hub.CreateLobby();
 
         _groups.Verify(g => g.AddToGroupAsync(ConnectionId, "XYZ789", default), Times.Once);
         _callerProxy.Verify(p => p.SendCoreAsync("LobbyCreated", It.Is<object?[]>(a => a.Length == 1), default), Times.Once);
+        _callerProxy.Verify(p => p.SendCoreAsync("PlayerJoined", It.Is<object?[]>(a => a.Length == 1), default), Times.Once);
     }
 
     [Fact]

SlipItIn.Server.Tests/GameServiceTests.cs

@@ -118,8 +118,9 @@ public class GameServiceTests
         using var db = _factory.CreateDbContext();
         var host = TestDbHelper.SeedUser(db);
         var other = TestDbHelper.SeedUser(db, "other", "other@t.local");
-        var (game, _) = TestDbHelper.SeedGame(db, host);
-        db.Players.Add(new Player { UserId = other.Id, GameId = game.Id });
+        var (game, hostPlayer) = TestDbHelper.SeedGame(db, host);
+        hostPlayer.IsReady = true;
+        db.Players.Add(new Player { UserId = other.Id, GameId = game.Id, IsReady = true });
         await db.SaveChangesAsync();
 
         var result = await _sut.StartGameAsync(game.Id);
@@ -131,6 +132,22 @@ public class GameServiceTests
         Assert.Equal(RoundStatus.Waiting, round.Status);
     }
 
+    [Fact]
+    public async Task StartGameAsync_Throws_WhenAnyPlayerIsNotReady()
+    {
+        using var db = _factory.CreateDbContext();
+        var host = TestDbHelper.SeedUser(db);
+        var other = TestDbHelper.SeedUser(db, "other", "other@t.local");
+        var (game, hostPlayer) = TestDbHelper.SeedGame(db, host);
+        hostPlayer.IsReady = true;
+        db.Players.Add(new Player { UserId = other.Id, GameId = game.Id, IsReady = false });
+        await db.SaveChangesAsync();
+
+        var exception = await Assert.ThrowsAsync<InvalidOperationException>(() => _sut.StartGameAsync(game.Id));
+
+        Assert.Equal("All players must be ready to start the game", exception.Message);
+    }
+
     [Fact]
     public async Task StartGameAsync_Throws_WhenGameNotFound()
     {

SlipItIn.Server/Hubs/GameHub.cs

@@ -110,6 +110,8 @@ public class GameHub : Hub
             await Groups.AddToGroupAsync(connectionId, game.LobbyCode);
 
             await Clients.Caller.SendAsync("LobbyCreated", new { GameId = game.Id, LobbyCode = game.LobbyCode });
+            var gameState = await _gameService.GetGameStateAsync(game.Id);
+            await Clients.Caller.SendAsync("PlayerJoined", gameState);
             _logger.LogInformation("Lobby {LobbyCode} created by user {UserId}", game.LobbyCode, userId);
         }
         catch (UnauthorizedAccessException)

SlipItIn.Server/Services/GameService.cs

@@ -81,6 +81,9 @@ public class GameService : IGameService
         if (game.Players.Count < 2)
             throw new InvalidOperationException("At least 2 players are required to start the game");
 
+        if (game.Players.Any(player => !player.IsReady))
+            throw new InvalidOperationException("All players must be ready to start the game");
+
         game.Status = GameStatus.InProgress;
         game.StartedAt = DateTime.UtcNow;
 

SlipItIn/ViewModels/LobbyViewModel.cs

@@ -42,6 +42,12 @@ public partial class LobbyViewModel : BaseViewModel,
     [ObservableProperty]
     public partial int PendingSyncActions { get; set; }
 
+    [ObservableProperty]
+    public partial bool IsCurrentPlayerReady { get; set; }
+
+    [ObservableProperty]
+    public partial bool CanStartGame { get; set; }
+
     public ObservableCollection<PlayerInfoDto> Players { get; } = [];
 
     public LobbyViewModel(ISignalRService signalR, IGameStateService gameStateService, IAuthSessionService authSession, IApiService apiService)

SlipItIn/Views/LobbyPage.xaml

@@ -21,16 +21,18 @@
             <Label Text="{Binding LobbyCode, StringFormat='Code: {0}'}" />
 
             <Button Text="Bereit" Command="{Binding SetReadyCommand}" />
-            <Button Text="Spiel starten (Host)" Command="{Binding StartGameCommand}" IsVisible="{Binding IsHost}" />
+            <Label Text="Du bist bereit." TextColor="ForestGreen" IsVisible="{Binding IsCurrentPlayerReady}" />
+            <Button Text="Spiel starten (Host)" Command="{Binding StartGameCommand}" IsVisible="{Binding IsHost}" IsEnabled="{Binding CanStartGame}" />
 
             <Label Text="Spieler" FontAttributes="Bold" />
             <CollectionView ItemsSource="{Binding Players}">
                 <CollectionView.ItemTemplate>
                     <DataTemplate>
-                        <Grid ColumnDefinitions="*,Auto,Auto" Padding="4">
+                        <Grid ColumnDefinitions="*,Auto,Auto,Auto" Padding="4">
                             <Label Grid.Column="0" Text="{Binding Username}" />
-                            <Label Grid.Column="1" Text="Score:" />
-                            <Label Grid.Column="2" Text="{Binding Score}" />
+                            <Label Grid.Column="1" Text="Bereit" TextColor="ForestGreen" IsVisible="{Binding IsReady}" />
+                            <Label Grid.Column="2" Text="Score:" />
+                            <Label Grid.Column="3" Text="{Binding Score}" />
                         </Grid>
                     </DataTemplate>
                 </CollectionView.ItemTemplate>