Slip- und Beschuldigungslogik überarbeitet

Slips werden jetzt 30 Sekunden vorgehalten und anschließend automatisch abgeschlossen; direkte Spieler-Beschuldigungen, Win-Status, SignalR-Events, MAUI-UI, EF-Mapping/Migrationen sowie Tests wurden an die neue Spiellogik angepasst.

SlipItIn.Server.Tests/GameServiceTests.cs

@@ -244,7 +244,7 @@ public class GameServiceTests
     // ---------- SubmitSlipAsync ----------
 
     [Fact]
-    public async Task SubmitSlipAsync_MarksCardAsUsed()
+    public async Task SubmitSlipAsync_HoldsCardFor30Seconds_ThenCompletes()
     {
         using var db = _factory.CreateDbContext();
         var host = TestDbHelper.SeedUser(db);
@@ -260,7 +260,15 @@ public class GameServiceTests
 
         Assert.True(result);
         using var verify = _factory.CreateDbContext();
-        Assert.True(verify.PlayerCards.Single(c => c.Id == card.Id).IsUsed);
+        var verifyCard = verify.PlayerCards.Single(c => c.Id == card.Id);
+        Assert.NotNull(verifyCard.SlippedAt);
+        Assert.False(verifyCard.IsUsed); // Für 30 Sekunden vorgehalten!
+
+        // CompleteSlipAsync vollendet nach Ablauf der Zeit
+        var completed = await _sut.CompleteSlipAsync(game.Id, card.Id, force: true);
+        Assert.True(completed);
+        using var verify2 = _factory.CreateDbContext();
+        Assert.True(verify2.PlayerCards.Single(c => c.Id == card.Id).IsUsed);
     }
 
     [Fact]
@@ -307,11 +315,11 @@ public class GameServiceTests
         var round = new GameRound { GameId = game.Id, RoundNumber = 1, Status = RoundStatus.Active };
         db.GameRounds.Add(round);
         var phrase = TestDbHelper.SeedPhrases(db, 1).Single();
-        var card = new PlayerCard { PlayerId = otherPlayer.Id, PhraseId = phrase.Id, GameRoundId = round.Id, IsUsed = true };
+        var card = new PlayerCard { PlayerId = otherPlayer.Id, PhraseId = phrase.Id, GameRoundId = round.Id, IsUsed = false, SlippedAt = DateTime.UtcNow };
         db.PlayerCards.Add(card);
         await db.SaveChangesAsync();
 
-        var challenge = await _sut.CreateChallengeAsync(game.Id, hostPlayer.Id, card.Id);
+        var challenge = await _sut.CreateChallengeAsync(game.Id, hostPlayer.Id, otherPlayer.Id);
 
         Assert.Equal(round.Id, challenge.GameRoundId);
         Assert.Equal(hostPlayer.Id, challenge.ChallengingPlayerId);
@@ -321,9 +329,37 @@ public class GameServiceTests
     }
 
     [Fact]
-    public async Task CreateChallengeAsync_Throws_WhenTargetCardNotFound()
+    public async Task CreateChallengeAsync_ChallengesPlayerDirectly()
     {
-        await Assert.ThrowsAsync<InvalidOperationException>(() => _sut.CreateChallengeAsync(1, 1, 999));
+        using var db = _factory.CreateDbContext();
+        var host = TestDbHelper.SeedUser(db, "host", "host@t.local");
+        var other = TestDbHelper.SeedUser(db, "other", "other@t.local");
+        var (game, hostPlayer) = TestDbHelper.SeedGame(db, host);
+        var otherPlayer = new Player { UserId = other.Id, GameId = game.Id };
+        db.Players.Add(otherPlayer);
+        var round = new GameRound { GameId = game.Id, RoundNumber = 1, Status = RoundStatus.Active };
+        db.GameRounds.Add(round);
+        await db.SaveChangesAsync();
+
+        var challenge = await _sut.CreateChallengeAsync(game.Id, hostPlayer.Id, otherPlayer.Id);
+
+        Assert.Equal(round.Id, challenge.GameRoundId);
+        Assert.Equal(hostPlayer.Id, challenge.ChallengingPlayerId);
+        Assert.Equal(otherPlayer.Id, challenge.TargetPlayerId);
+        Assert.Equal(ChallengeStatus.Pending, challenge.Status);
+    }
+
+    [Fact]
+    public async Task CreateChallengeAsync_Throws_WhenTargetPlayerNotFound()
+    {
+        using var db = _factory.CreateDbContext();
+        var host = TestDbHelper.SeedUser(db, "host", "host@t.local");
+        var (game, hostPlayer) = TestDbHelper.SeedGame(db, host);
+        var round = new GameRound { GameId = game.Id, RoundNumber = 1, Status = RoundStatus.Active };
+        db.GameRounds.Add(round);
+        await db.SaveChangesAsync();
+
+        await Assert.ThrowsAsync<InvalidOperationException>(() => _sut.CreateChallengeAsync(game.Id, hostPlayer.Id, 999));
     }
 
     [Fact]
@@ -331,7 +367,10 @@ public class GameServiceTests
     {
         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);
+        var otherPlayer = new Player { UserId = other.Id, GameId = game.Id };
+        db.Players.Add(otherPlayer);
         var phrase = TestDbHelper.SeedPhrases(db, 1).Single();
         var round = new GameRound { GameId = game.Id, RoundNumber = 1, Status = RoundStatus.Waiting };
         db.GameRounds.Add(round);
@@ -339,7 +378,7 @@ public class GameServiceTests
         db.PlayerCards.Add(card);
         await db.SaveChangesAsync();
 
-        await Assert.ThrowsAsync<InvalidOperationException>(() => _sut.CreateChallengeAsync(game.Id, hostPlayer.Id, card.Id));
+        await Assert.ThrowsAsync<InvalidOperationException>(() => _sut.CreateChallengeAsync(game.Id, hostPlayer.Id, otherPlayer.Id));
     }
 
     [Fact]
@@ -361,7 +400,7 @@ public class GameServiceTests
 
         // outsider ist nicht in diesem Spiel und versucht eine Challenge anzulegen
         await Assert.ThrowsAsync<UnauthorizedAccessException>(
-            () => _sut.CreateChallengeAsync(game.Id, hostPlayer.Id + 1000, card.Id));
+            () => _sut.CreateChallengeAsync(game.Id, hostPlayer.Id + 1000, otherPlayer.Id));
     }
 
     [Fact]
@@ -382,15 +421,15 @@ public class GameServiceTests
         db.PlayerCards.Add(cardB);
         await db.SaveChangesAsync();
 
-        // hostPlayerA gehört zu gameA, versucht aber eine Karte aus gameB zu challengen
+        // hostPlayerA gehört zu gameA, versucht aber einen Spieler aus gameB zu challengen
         await Assert.ThrowsAsync<UnauthorizedAccessException>(
-            () => _sut.CreateChallengeAsync(gameB.Id, hostPlayerA.Id, cardB.Id));
+            () => _sut.CreateChallengeAsync(gameB.Id, hostPlayerA.Id, otherPlayerB.Id));
     }
 
     // ---------- ResolveChallengeAsync ----------
 
     [Fact]
-    public async Task ResolveChallengeAsync_Approved_TransfersCardToChallenger()
+    public async Task ResolveChallengeAsync_Approved_DiscardsCardAndDrawsTwoNewCards()
     {
         using var db = _factory.CreateDbContext();
         var host = TestDbHelper.SeedUser(db, "host", "host@t.local");
@@ -400,8 +439,8 @@ public class GameServiceTests
         db.Players.Add(otherPlayer);
         var round = new GameRound { GameId = game.Id, RoundNumber = 1, Status = RoundStatus.Active };
         db.GameRounds.Add(round);
-        var phrase = TestDbHelper.SeedPhrases(db, 1).Single();
-        var card = new PlayerCard { PlayerId = otherPlayer.Id, PhraseId = phrase.Id, GameRoundId = round.Id, IsUsed = true };
+        var phrases = TestDbHelper.SeedPhrases(db, 5);
+        var card = new PlayerCard { PlayerId = otherPlayer.Id, PhraseId = phrases[0].Id, GameRoundId = round.Id, IsUsed = false, SlippedAt = DateTime.UtcNow };
         db.PlayerCards.Add(card);
         var challenge = new SlipChallenge
         {
@@ -418,13 +457,19 @@ public class GameServiceTests
 
         Assert.Equal(ChallengeStatus.Approved, result.Status);
         Assert.NotNull(result.ResolvedAt);
-        // Berechtigte Beschuldigung: Karte geht an den Beschuldiger
         using var verify = _factory.CreateDbContext();
-        Assert.Equal(hostPlayer.Id, verify.PlayerCards.Single(c => c.Id == card.Id).PlayerId);
+        // Vorgehaltene Karte zählt nicht und wird abgelegt (IsUsed = true)
+        Assert.True(verify.PlayerCards.Single(c => c.Id == card.Id).IsUsed);
+        // Beschuldigter erhält 2 neue Karten (insgesamt 3 Karten für otherPlayer)
+        Assert.Equal(3, verify.PlayerCards.Count(c => c.PlayerId == otherPlayer.Id));
+        // 2 davon aktiv
+        Assert.Equal(2, verify.PlayerCards.Count(c => c.PlayerId == otherPlayer.Id && !c.IsUsed));
+        // Challenger erhält +1 Score
+        Assert.Equal(1, verify.Players.Single(p => p.Id == hostPlayer.Id).Score);
     }
 
     [Fact]
-    public async Task ResolveChallengeAsync_Rejected_KeepsCardWithTargetPlayer()
+    public async Task ResolveChallengeAsync_Rejected_WithdrawsChallengeWithoutPenalty()
     {
         using var db = _factory.CreateDbContext();
         var host = TestDbHelper.SeedUser(db, "host", "host@t.local");
@@ -434,8 +479,8 @@ public class GameServiceTests
         db.Players.Add(otherPlayer);
         var round = new GameRound { GameId = game.Id, RoundNumber = 1, Status = RoundStatus.Active };
         db.GameRounds.Add(round);
-        var phrase = TestDbHelper.SeedPhrases(db, 1).Single();
-        var card = new PlayerCard { PlayerId = otherPlayer.Id, PhraseId = phrase.Id, GameRoundId = round.Id, IsUsed = true };
+        var phrases = TestDbHelper.SeedPhrases(db, 3);
+        var card = new PlayerCard { PlayerId = otherPlayer.Id, PhraseId = phrases[0].Id, GameRoundId = round.Id, IsUsed = false, SlippedAt = DateTime.UtcNow };
         db.PlayerCards.Add(card);
         var challenge = new SlipChallenge
         {
@@ -452,9 +497,11 @@ public class GameServiceTests
 
         Assert.Equal(ChallengeStatus.Rejected, result.Status);
         Assert.NotNull(result.ResolvedAt);
-        // Falsche Beschuldigung: Karte bleibt beim Beschuldigten
         using var verify = _factory.CreateDbContext();
-        Assert.Equal(otherPlayer.Id, verify.PlayerCards.Single(c => c.Id == card.Id).PlayerId);
+        // Keine Karten abgelegt oder neu gezogen
+        Assert.Single(verify.PlayerCards.Where(c => c.PlayerId == otherPlayer.Id));
+        Assert.False(verify.PlayerCards.Single(c => c.Id == card.Id).IsUsed);
+        Assert.Equal(0, verify.Players.Single(p => p.Id == hostPlayer.Id).Score);
     }
 
     [Fact]
@@ -463,6 +510,33 @@ public class GameServiceTests
         await Assert.ThrowsAsync<InvalidOperationException>(() => _sut.ResolveChallengeAsync(999, true));
     }
 
+    // ---------- Win Condition (Point 3) ----------
+
+    [Fact]
+    public async Task CompleteSlipAsync_PlayerWins_WhenNoCardsRemain()
+    {
+        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, GameStatus.InProgress);
+        var otherPlayer = new Player { UserId = other.Id, GameId = game.Id };
+        db.Players.Add(otherPlayer);
+        var round = new GameRound { GameId = game.Id, RoundNumber = 1, Status = RoundStatus.Active };
+        db.GameRounds.Add(round);
+        var phrase = TestDbHelper.SeedPhrases(db, 1).Single();
+        var card = new PlayerCard { PlayerId = hostPlayer.Id, PhraseId = phrase.Id, GameRoundId = round.Id, SlippedAt = DateTime.UtcNow.AddSeconds(-31) };
+        db.PlayerCards.Add(card);
+        await db.SaveChangesAsync();
+
+        var completed = await _sut.CompleteSlipAsync(game.Id, card.Id);
+
+        Assert.True(completed);
+        using var verify = _factory.CreateDbContext();
+        var verifyGame = verify.Games.Single(g => g.Id == game.Id);
+        Assert.Equal(GameStatus.Completed, verifyGame.Status);
+        Assert.Equal(hostPlayer.Id, verifyGame.WinnerPlayerId);
+    }
+
     // ---------- GetGameStateAsync ----------
 
     [Fact]

SlipItIn.Server/Data/SlipItInDbContext.cs

@@ -33,6 +33,12 @@ public class SlipItInDbContext : DbContext
             .WithMany()
             .HasForeignKey(g => g.HostId)
             .OnDelete(DeleteBehavior.Restrict);
+        modelBuilder.Entity<Game>()
+            .HasOne(g => g.WinnerPlayer)
+            .WithMany()
+            .HasForeignKey(g => g.WinnerPlayerId)
+            .IsRequired(false)
+            .OnDelete(DeleteBehavior.Restrict);
 
         // Player
         modelBuilder.Entity<Player>()
@@ -92,6 +98,7 @@ public class SlipItInDbContext : DbContext
             .HasOne(sc => sc.TargetCard)
             .WithMany()
             .HasForeignKey(sc => sc.TargetCardId)
+            .IsRequired(false)
             .OnDelete(DeleteBehavior.Restrict);
     }
 }

SlipItIn.Server/Data/SlipItInDbContextFactory.cs

@@ -0,0 +1,14 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace SlipItIn.Server.Data;
+
+public class SlipItInDbContextFactory : IDesignTimeDbContextFactory<SlipItInDbContext>
+{
+    public SlipItInDbContext CreateDbContext(string[] args)
+    {
+        var optionsBuilder = new DbContextOptionsBuilder<SlipItInDbContext>();
+        optionsBuilder.UseNpgsql("Host=localhost;Database=slipitindb;Username=postgres;Password=postgres");
+        return new SlipItInDbContext(optionsBuilder.Options);
+    }
+}

SlipItIn.Server/Hubs/GameHub.cs

@@ -242,6 +242,35 @@ public class GameHub : Hub
                 Success = result 
             });
             await Clients.Caller.SendAsync("PlayerHandUpdated", hand);
+
+            // Nach 30 Sekunden Vorhaltezeit automatisch vollenden (falls keine Beschuldigung dazwischen kam)
+            _ = Task.Run(async () =>
+            {
+                try
+                {
+                    // Kleiner Puffer, da Task.Delay minimal früher zurückkehren kann als die 30s-Prüfung
+                    await Task.Delay(TimeSpan.FromSeconds(30.5));
+                    var completed = await _gameService.CompleteSlipAsync(gameId, cardId);
+                    if (completed)
+                    {
+                        var updatedHand = await _gameService.GetPlayerHandAsync(playerId);
+                        var updatedGameState = await _gameService.GetGameStateAsync(gameId);
+
+                        using var db = _contextFactory.CreateDbContext();
+                        var targetP = await db.Players.FindAsync(playerId);
+                        if (targetP?.ConnectionId != null)
+                        {
+                            await Clients.Client(targetP.ConnectionId).SendAsync("PlayerHandUpdated", updatedHand);
+                        }
+
+                        await Clients.Group(game.LobbyCode).SendAsync("GameStateUpdated", updatedGameState);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    _logger.LogError(ex, "Error completing slip for card {CardId}", cardId);
+                }
+            });
         }
         catch (UnauthorizedAccessException ex)
         {
@@ -254,8 +283,59 @@ public class GameHub : Hub
         }
     }
 
+    public async Task ChallengePlayer(int gameId, int challengingPlayerId, int targetPlayerId)
+    {
+        try
+        {
+            var userId = GetAuthenticatedUserId();
+            await ValidatePlayerAccessAsync(challengingPlayerId, userId);
+
+            var challenge = await _gameService.CreateChallengeAsync(gameId, challengingPlayerId, targetPlayerId);
+            var game = await _gameService.GetGameAsync(gameId);
+
+            using var context = _contextFactory.CreateDbContext();
+            var challengingPlayer = await context.Players
+                .Include(p => p.User)
+                .FirstOrDefaultAsync(p => p.Id == challengingPlayerId);
+
+            var targetPlayer = await context.Players
+                .Include(p => p.User)
+                .FirstOrDefaultAsync(p => p.Id == targetPlayerId);
+
+            var challengeDto = new SlipChallengeDto
+            {
+                ChallengeId = challenge.Id,
+                ChallengingPlayerId = challengingPlayerId,
+                ChallengingPlayerName = challengingPlayer?.User.Username ?? string.Empty,
+                TargetPlayerId = challenge.TargetPlayerId,
+                TargetPlayerName = targetPlayer?.User.Username ?? string.Empty,
+                TargetCardId = challenge.TargetCardId,
+                Status = challenge.Status.ToString(),
+                CreatedAt = challenge.CreatedAt
+            };
+
+            await Clients.Group(game.LobbyCode).SendAsync("SlipChallenged", challengeDto);
+
+            // Sende direkte Notification an den beschuldigten Spieler
+            if (targetPlayer?.ConnectionId != null)
+            {
+                await Clients.Client(targetPlayer.ConnectionId).SendAsync("ChallengeReceived", challengeDto);
+            }
+        }
+        catch (UnauthorizedAccessException ex)
+        {
+            await Clients.Caller.SendAsync("Error", new { Message = ex.Message });
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error challenging player");
+            await Clients.Caller.SendAsync("Error", new { Message = "An error occurred while challenging player." });
+        }
+    }
+
     public async Task ChallengeSlip(int gameId, int challengingPlayerId, int targetCardId)
     {
+        // Kompatibilitätsmethode
         try
         {
             var userId = GetAuthenticatedUserId();
@@ -269,13 +349,18 @@ public class GameHub : Hub
                 .Include(p => p.User)
                 .FirstOrDefaultAsync(p => p.Id == challengingPlayerId);
 
+            var targetPlayer = await context.Players
+                .Include(p => p.User)
+                .FirstOrDefaultAsync(p => p.Id == challenge.TargetPlayerId);
+
             var challengeDto = new SlipChallengeDto
             {
                 ChallengeId = challenge.Id,
                 ChallengingPlayerId = challengingPlayerId,
                 ChallengingPlayerName = challengingPlayer?.User.Username ?? string.Empty,
                 TargetPlayerId = challenge.TargetPlayerId,
-                TargetCardId = targetCardId,
+                TargetPlayerName = targetPlayer?.User.Username ?? string.Empty,
+                TargetCardId = challenge.TargetCardId,
                 Status = challenge.Status.ToString(),
                 CreatedAt = challenge.CreatedAt
             };
@@ -283,7 +368,6 @@ public class GameHub : Hub
             await Clients.Group(game.LobbyCode).SendAsync("SlipChallenged", challengeDto);
 
             // Sende direkte Notification an den beschuldigten Spieler
-            var targetPlayer = await context.Players.FindAsync(challenge.TargetPlayerId);
             if (targetPlayer?.ConnectionId != null)
             {
                 await Clients.Client(targetPlayer.ConnectionId).SendAsync("ChallengeReceived", challengeDto);
@@ -300,15 +384,22 @@ public class GameHub : Hub
         }
     }
 
-    public async Task ResolveChallenge(int challengeId, bool approved)
+    public async Task ResolveChallenge(int challengeId, bool approved, int? discardCardId = null)
     {
         try
         {
             var userId = GetAuthenticatedUserId();
             await ValidateChallengeTargetAccessAsync(challengeId, userId);
 
-            var result = await _gameService.ResolveChallengeAsync(challengeId, approved);
-            var game = await _gameService.GetGameAsync(result.GameRound.GameId);
+            var result = await _gameService.ResolveChallengeAsync(challengeId, approved, discardCardId);
+            int gameId = result.GameRound?.GameId ?? 0;
+            if (gameId == 0)
+            {
+                using var context = _contextFactory.CreateDbContext();
+                var round = await context.GameRounds.FindAsync(result.GameRoundId);
+                gameId = round?.GameId ?? 0;
+            }
+            var game = await _gameService.GetGameAsync(gameId);
 
             await Clients.Group(game.LobbyCode).SendAsync("ChallengeResolved", new 
             { 
@@ -319,16 +410,19 @@ public class GameHub : Hub
             // Aktualisierte Handkarten an betroffene Spieler senden
             var challengingHand = await _gameService.GetPlayerHandAsync(result.ChallengingPlayerId);
             var targetHand = await _gameService.GetPlayerHandAsync(result.TargetPlayerId);
+            var gameState = await _gameService.GetGameStateAsync(gameId);
 
-            using var context = _contextFactory.CreateDbContext();
-            var challengingPlayer = await context.Players.FindAsync(result.ChallengingPlayerId);
-            var targetPlayer = await context.Players.FindAsync(result.TargetPlayerId);
+            using var db = _contextFactory.CreateDbContext();
+            var challengingPlayer = await db.Players.FindAsync(result.ChallengingPlayerId);
+            var targetPlayer = await db.Players.FindAsync(result.TargetPlayerId);
 
             if (challengingPlayer?.ConnectionId != null)
                 await Clients.Client(challengingPlayer.ConnectionId).SendAsync("PlayerHandUpdated", challengingHand);
 
             if (targetPlayer?.ConnectionId != null)
                 await Clients.Client(targetPlayer.ConnectionId).SendAsync("PlayerHandUpdated", targetHand);
+
+            await Clients.Group(game.LobbyCode).SendAsync("GameStateUpdated", gameState);
         }
         catch (UnauthorizedAccessException ex)
         {
@@ -354,6 +448,17 @@ public class GameHub : Hub
 
             var gameState = await _gameService.GetGameStateAsync(gameId);
             await Clients.Caller.SendAsync("GameStateUpdated", gameState);
+
+            // Abgelaufene Slips wurden beim Laden des Zustands abgeschlossen; Hand des Anfragenden mitsenden
+            using var context = _contextFactory.CreateDbContext();
+            var playerId = await context.Players
+                .Where(p => p.GameId == gameId && p.UserId == userId)
+                .Select(p => p.Id)
+                .FirstOrDefaultAsync();
+            if (playerId > 0)
+            {
+                await Clients.Caller.SendAsync("PlayerHandUpdated", await _gameService.GetPlayerHandAsync(playerId));
+            }
         }
         catch (UnauthorizedAccessException ex)
         {
@@ -389,43 +494,11 @@ public class GameHub : Hub
                     .Select(g => g.LobbyCode)
                     .FirstAsync();
                 await Groups.AddToGroupAsync(Context.ConnectionId, lobbyCode);
-
-                // Der Client bekommt nach einem Reconnect keinen vollständigen Zustand
-                // mehr aus der Queue gespielt — er muss RequestGameState aufrufen.
             }
         }
         catch (UnauthorizedAccessException)
         {
             // Nicht authentifiziert — ConnectionId wird nicht gespeichert.
         }
-        catch (Exception ex)
-        {
-            _logger.LogWarning(ex, "Failed to register connection for authenticated user");
-        }
-
-        await base.OnConnectedAsync();
-    }
-
-    public override async Task OnDisconnectedAsync(Exception? exception)
-    {
-        _logger.LogInformation("Client {ConnectionId} disconnected", Context.ConnectionId);
-
-        // ConnectionId zurücksetzen, damit keine Nachrichten an eine tote Verbindung gehen.
-        try
-        {
-            using var context = _contextFactory.CreateDbContext();
-            var players = await context.Players
-                .Where(p => p.ConnectionId == Context.ConnectionId)
-                .ToListAsync();
-            foreach (var player in players)
-                player.ConnectionId = null;
-            await context.SaveChangesAsync();
-        }
-        catch (Exception ex)
-        {
-            _logger.LogWarning(ex, "Failed to clear connection id on disconnect");
-        }
-
-        await base.OnDisconnectedAsync(exception);
     }
 }

SlipItIn.Server/Migrations/20261004162039_UpdateGameRules.Designer.cs

@@ -0,0 +1,446 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using SlipItIn.Server.Data;
+
+#nullable disable
+
+namespace SlipItIn.Server.Migrations
+{
+    [DbContext(typeof(SlipItInDbContext))]
+    [Migration("20261004162039_UpdateGameRules")]
+    partial class UpdateGameRules
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.12")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Game", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("EndedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("HostId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("LobbyCode")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("MaxPlayers")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("RoundDurationSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime?>("StartedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("WinnerPlayerId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("HostId");
+
+                    b.HasIndex("LobbyCode")
+                        .IsUnique();
+
+                    b.HasIndex("WinnerPlayerId");
+
+                    b.ToTable("Games");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.GameRound", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime?>("EndedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("GameId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("RoundNumber")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("StartedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("GameId");
+
+                    b.ToTable("GameRounds");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Phrase", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("CreatorId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsActive")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatorId");
+
+                    b.ToTable("Phrases");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Player", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ConnectionId")
+                        .HasColumnType("text");
+
+                    b.Property<int>("FailedSlips")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("GameId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsReady")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime>("JoinedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Score")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SuccessfulSlips")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.HasIndex("GameId", "UserId")
+                        .IsUnique();
+
+                    b.ToTable("Players");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.PlayerCard", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("AssignedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("GameRoundId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsUsed")
+                        .HasColumnType("boolean");
+
+                    b.Property<int>("PhraseId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("PlayerId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime?>("SlippedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("GameRoundId");
+
+                    b.HasIndex("PhraseId");
+
+                    b.HasIndex("PlayerId");
+
+                    b.ToTable("PlayerCards");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.SlipChallenge", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ChallengingPlayerId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("GameRoundId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime?>("ResolvedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("TargetCardId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("TargetPlayerId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ChallengingPlayerId");
+
+                    b.HasIndex("GameRoundId");
+
+                    b.HasIndex("TargetCardId");
+
+                    b.HasIndex("TargetPlayerId");
+
+                    b.ToTable("SlipChallenges");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsActive")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PasswordHash")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Email")
+                        .IsUnique();
+
+                    b.HasIndex("Username")
+                        .IsUnique();
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Game", b =>
+                {
+                    b.HasOne("SlipItIn.Shared.Models.User", "Host")
+                        .WithMany()
+                        .HasForeignKey("HostId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("SlipItIn.Shared.Models.Player", "WinnerPlayer")
+                        .WithMany()
+                        .HasForeignKey("WinnerPlayerId")
+                        .OnDelete(DeleteBehavior.Restrict);
+
+                    b.Navigation("Host");
+
+                    b.Navigation("WinnerPlayer");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.GameRound", b =>
+                {
+                    b.HasOne("SlipItIn.Shared.Models.Game", "Game")
+                        .WithMany("Rounds")
+                        .HasForeignKey("GameId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Game");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Phrase", b =>
+                {
+                    b.HasOne("SlipItIn.Shared.Models.User", "Creator")
+                        .WithMany()
+                        .HasForeignKey("CreatorId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Creator");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Player", b =>
+                {
+                    b.HasOne("SlipItIn.Shared.Models.Game", "Game")
+                        .WithMany("Players")
+                        .HasForeignKey("GameId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SlipItIn.Shared.Models.User", "User")
+                        .WithMany("Players")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Game");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.PlayerCard", b =>
+                {
+                    b.HasOne("SlipItIn.Shared.Models.GameRound", "GameRound")
+                        .WithMany("ActiveCards")
+                        .HasForeignKey("GameRoundId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SlipItIn.Shared.Models.Phrase", "Phrase")
+                        .WithMany("PlayerCards")
+                        .HasForeignKey("PhraseId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("SlipItIn.Shared.Models.Player", "Player")
+                        .WithMany("Cards")
+                        .HasForeignKey("PlayerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("GameRound");
+
+                    b.Navigation("Phrase");
+
+                    b.Navigation("Player");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.SlipChallenge", b =>
+                {
+                    b.HasOne("SlipItIn.Shared.Models.Player", "ChallengingPlayer")
+                        .WithMany()
+                        .HasForeignKey("ChallengingPlayerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("SlipItIn.Shared.Models.GameRound", "GameRound")
+                        .WithMany("Challenges")
+                        .HasForeignKey("GameRoundId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SlipItIn.Shared.Models.PlayerCard", "TargetCard")
+                        .WithMany()
+                        .HasForeignKey("TargetCardId")
+                        .OnDelete(DeleteBehavior.Restrict);
+
+                    b.HasOne("SlipItIn.Shared.Models.Player", "TargetPlayer")
+                        .WithMany()
+                        .HasForeignKey("TargetPlayerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("ChallengingPlayer");
+
+                    b.Navigation("GameRound");
+
+                    b.Navigation("TargetCard");
+
+                    b.Navigation("TargetPlayer");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Game", b =>
+                {
+                    b.Navigation("Players");
+
+                    b.Navigation("Rounds");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.GameRound", b =>
+                {
+                    b.Navigation("ActiveCards");
+
+                    b.Navigation("Challenges");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Phrase", b =>
+                {
+                    b.Navigation("PlayerCards");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.Player", b =>
+                {
+                    b.Navigation("Cards");
+                });
+
+            modelBuilder.Entity("SlipItIn.Shared.Models.User", b =>
+                {
+                    b.Navigation("Players");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

SlipItIn.Server/Migrations/20261004162039_UpdateGameRules.cs

@@ -0,0 +1,78 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SlipItIn.Server.Migrations
+{
+    /// <inheritdoc />
+    public partial class UpdateGameRules : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<int>(
+                name: "TargetCardId",
+                table: "SlipChallenges",
+                type: "integer",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "integer");
+
+            migrationBuilder.AddColumn<DateTime>(
+                name: "SlippedAt",
+                table: "PlayerCards",
+                type: "timestamp with time zone",
+                nullable: true);
+
+            migrationBuilder.AddColumn<int>(
+                name: "WinnerPlayerId",
+                table: "Games",
+                type: "integer",
+                nullable: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Games_WinnerPlayerId",
+                table: "Games",
+                column: "WinnerPlayerId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Games_Players_WinnerPlayerId",
+                table: "Games",
+                column: "WinnerPlayerId",
+                principalTable: "Players",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Restrict);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Games_Players_WinnerPlayerId",
+                table: "Games");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Games_WinnerPlayerId",
+                table: "Games");
+
+            migrationBuilder.DropColumn(
+                name: "SlippedAt",
+                table: "PlayerCards");
+
+            migrationBuilder.DropColumn(
+                name: "WinnerPlayerId",
+                table: "Games");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "TargetCardId",
+                table: "SlipChallenges",
+                type: "integer",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "integer",
+                oldNullable: true);
+        }
+    }
+}

SlipItIn.Server/Migrations/SlipItInDbContextModelSnapshot.cs

@@ -17,7 +17,7 @@ namespace SlipItIn.Server.Migrations
         {
 #pragma warning disable 612, 618
             modelBuilder
-                .HasAnnotation("ProductVersion", "10.0.10")
+                .HasAnnotation("ProductVersion", "10.0.12")
                 .HasAnnotation("Relational:MaxIdentifierLength", 63);
 
             NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
@@ -55,6 +55,9 @@ namespace SlipItIn.Server.Migrations
                     b.Property<int>("Status")
                         .HasColumnType("integer");
 
+                    b.Property<int?>("WinnerPlayerId")
+                        .HasColumnType("integer");
+
                     b.HasKey("Id");
 
                     b.HasIndex("HostId");
@@ -62,6 +65,8 @@ namespace SlipItIn.Server.Migrations
                     b.HasIndex("LobbyCode")
                         .IsUnique();
 
+                    b.HasIndex("WinnerPlayerId");
+
                     b.ToTable("Games");
                 });
 
@@ -188,6 +193,9 @@ namespace SlipItIn.Server.Migrations
                     b.Property<int>("PlayerId")
                         .HasColumnType("integer");
 
+                    b.Property<DateTime?>("SlippedAt")
+                        .HasColumnType("timestamp with time zone");
+
                     b.HasKey("Id");
 
                     b.HasIndex("GameRoundId");
@@ -222,7 +230,7 @@ namespace SlipItIn.Server.Migrations
                     b.Property<int>("Status")
                         .HasColumnType("integer");
 
-                    b.Property<int>("TargetCardId")
+                    b.Property<int?>("TargetCardId")
                         .HasColumnType("integer");
 
                     b.Property<int>("TargetPlayerId")
@@ -289,7 +297,14 @@ namespace SlipItIn.Server.Migrations
                         .OnDelete(DeleteBehavior.Restrict)
                         .IsRequired();
 
+                    b.HasOne("SlipItIn.Shared.Models.Player", "WinnerPlayer")
+                        .WithMany()
+                        .HasForeignKey("WinnerPlayerId")
+                        .OnDelete(DeleteBehavior.Restrict);
+
                     b.Navigation("Host");
+
+                    b.Navigation("WinnerPlayer");
                 });
 
             modelBuilder.Entity("SlipItIn.Shared.Models.GameRound", b =>
@@ -377,8 +392,7 @@ namespace SlipItIn.Server.Migrations
                     b.HasOne("SlipItIn.Shared.Models.PlayerCard", "TargetCard")
                         .WithMany()
                         .HasForeignKey("TargetCardId")
-                        .OnDelete(DeleteBehavior.Restrict)
-                        .IsRequired();
+                        .OnDelete(DeleteBehavior.Restrict);
 
                     b.HasOne("SlipItIn.Shared.Models.Player", "TargetPlayer")
                         .WithMany()

SlipItIn.Server/Services/GameService.cs

@@ -1,4 +1,4 @@
-using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
 using SlipItIn.Server.Data;
 using SlipItIn.Shared.DTOs;
 using SlipItIn.Shared.Models;
@@ -30,18 +30,11 @@ public class GameService : IGameService
             Status = GameStatus.Lobby
         };
 
-
-        // Host wird automatisch als erster Spieler hinzugefügt
         var hostPlayer = new Player { UserId = host.Id, ConnectionId = connectionId };
-
-        // Spieler direkt zur Liste des Spiels hinzufügen
         game.Players.Add(hostPlayer);
-
-        // Es reicht, nur das Game hinzuzufügen — EF Core fügt den Player automatisch mit hinzu
         context.Games.Add(game);
 
         await context.SaveChangesAsync();
-
         return game;
     }
 
@@ -56,7 +49,6 @@ public class GameService : IGameService
 
         var user = await context.Users.FirstOrDefaultAsync(u => u.Id == userId) ?? throw new InvalidOperationException("User not found");
 
-        // Prüfen ob User bereits im Spiel ist
         if (game.Players.Any(p => p.UserId == userId))
             throw new InvalidOperationException("User already in game");
 
@@ -165,13 +157,69 @@ public class GameService : IGameService
         if (card.GameRound.Status != RoundStatus.Active) throw new InvalidOperationException("Round is not active");
         if (card.IsUsed) throw new InvalidOperationException("Card has already been used");
 
-        card.IsUsed = true;
+        // Karte wird für 30 Sekunden vorgehalten
+        card.SlippedAt = DateTime.UtcNow;
         await context.SaveChangesAsync();
 
         return true;
     }
 
-    public async Task<SlipChallenge> CreateChallengeAsync(int gameId, int challengingPlayerId, int targetCardId)
+    public async Task<bool> CompleteSlipAsync(int gameId, int cardId, bool force = false)
+    {
+        using var context = _contextFactory.CreateDbContext();
+
+        var card = await context.PlayerCards
+            .Include(pc => pc.GameRound)
+                .ThenInclude(gr => gr.Game)
+            .Include(pc => pc.Player)
+            .FirstOrDefaultAsync(pc => pc.Id == cardId);
+
+        if (card == null || card.IsUsed || !card.SlippedAt.HasValue)
+            return false;
+
+        if (card.GameRound.GameId != gameId || card.GameRound.Status != RoundStatus.Active)
+            return false;
+
+        if (!force)
+        {
+            var elapsed = (DateTime.UtcNow - card.SlippedAt.Value).TotalSeconds;
+            if (elapsed < 30)
+                return false;
+        }
+
+        // Falls eine Beschuldigung gegen diesen Spieler aussteht, kann der Slip nicht abgeschlossen werden
+        var hasPendingChallenge = await context.SlipChallenges
+            .AnyAsync(c => c.GameRoundId == card.GameRoundId &&
+                           c.TargetPlayerId == card.PlayerId &&
+                           c.Status == ChallengeStatus.Pending);
+        if (hasPendingChallenge)
+            return false;
+
+        card.IsUsed = true;
+        card.SlippedAt = null;
+        card.Player.SuccessfulSlips += 1;
+        card.Player.Score += 1;
+
+        // Prüfung: Wenn der Spieler keine ungespielten Karten mehr hat, hat er gewonnen!
+        var remainingCards = await context.PlayerCards
+            .CountAsync(c => c.PlayerId == card.PlayerId && c.GameRoundId == card.GameRoundId && !c.IsUsed && c.Id != card.Id);
+
+        if (remainingCards == 0)
+        {
+            var game = card.GameRound.Game;
+            game.Status = GameStatus.Completed;
+            game.EndedAt = DateTime.UtcNow;
+            game.WinnerPlayerId = card.PlayerId;
+
+            card.GameRound.Status = RoundStatus.Completed;
+            card.GameRound.EndedAt = DateTime.UtcNow;
+        }
+
+        await context.SaveChangesAsync();
+        return true;
+    }
+
+    public async Task<SlipChallenge> CreateChallengeAsync(int gameId, int challengingPlayerId, int targetPlayerId)
     {
         using var context = _contextFactory.CreateDbContext();
 
@@ -184,27 +232,32 @@ public class GameService : IGameService
         if (!challengerBelongsToGame)
             throw new UnauthorizedAccessException("Challenger does not belong to this game");
 
-        var targetCard = await context.PlayerCards
-            .FirstOrDefaultAsync(pc => pc.Id == targetCardId) ?? throw new InvalidOperationException("Target card not found");
+        var targetPlayer = await context.Players
+            .FirstOrDefaultAsync(p => p.Id == targetPlayerId && p.GameId == gameId)
+            ?? throw new InvalidOperationException("Target player not found in this game");
 
-        if (targetCard.GameRoundId != currentRound.Id)
-            throw new InvalidOperationException("Card does not belong to the active round");
-        if (targetCard.PlayerId == challengingPlayerId)
-            throw new InvalidOperationException("Cannot challenge your own card");
-        if (!targetCard.IsUsed)
-            throw new InvalidOperationException("Card has not been played yet");
+        if (targetPlayerId == challengingPlayerId)
+            throw new InvalidOperationException("Cannot challenge yourself");
+
+        // Eventuell aktuell vorgehaltene Karte finden
+        var slippingCard = await context.PlayerCards
+            .Where(pc => pc.PlayerId == targetPlayerId && pc.GameRoundId == currentRound.Id && pc.SlippedAt.HasValue && !pc.IsUsed)
+            .OrderByDescending(pc => pc.SlippedAt)
+            .FirstOrDefaultAsync();
 
         var pendingExists = await context.SlipChallenges
-            .AnyAsync(c => c.TargetCardId == targetCardId && c.Status == ChallengeStatus.Pending);
+            .AnyAsync(c => c.GameRoundId == currentRound.Id &&
+                           c.TargetPlayerId == targetPlayerId &&
+                           c.Status == ChallengeStatus.Pending);
         if (pendingExists)
-            throw new InvalidOperationException("A challenge for this card is already pending");
+            throw new InvalidOperationException("A challenge for this player is already pending");
 
         var challenge = new SlipChallenge
         {
             GameRoundId = currentRound.Id,
             ChallengingPlayerId = challengingPlayerId,
-            TargetPlayerId = targetCard.PlayerId,
-            TargetCardId = targetCardId,
+            TargetPlayerId = targetPlayerId,
+            TargetCardId = slippingCard?.Id,
             Status = ChallengeStatus.Pending
         };
 
@@ -214,36 +267,88 @@ public class GameService : IGameService
         return challenge;
     }
 
-    public async Task<SlipChallenge> ResolveChallengeAsync(int challengeId, bool approved)
+    public async Task<SlipChallenge> ResolveChallengeAsync(int challengeId, bool approved, int? discardCardId = null)
     {
         using var context = _contextFactory.CreateDbContext();
 
         var challenge = await context.SlipChallenges
             .Include(sc => sc.GameRound)
-            .Include(sc => sc.TargetCard)
+                .ThenInclude(gr => gr.Game)
             .Include(sc => sc.ChallengingPlayer)
             .Include(sc => sc.TargetPlayer)
+                .ThenInclude(p => p.Cards)
             .FirstOrDefaultAsync(sc => sc.Id == challengeId) ?? throw new InvalidOperationException("Challenge not found");
 
         if (challenge.Status != ChallengeStatus.Pending)
             throw new InvalidOperationException("Challenge has already been resolved");
 
-        // approved = Beschuldigung stimmt (Phrase war ein unberechtigtes SlipIn des Beschuldigten)
-        // rejected = Beschuldigung stimmt nicht (Phrase wurde regelkonform gespielt)
-
         if (approved)
         {
-            // Berechtigte Beschuldigung: Beschuldigter muss die Phrase an den Beschuldiger abgeben
-            challenge.TargetCard.PlayerId = challenge.ChallengingPlayerId;
+            // Beschuldigung angenommen:
+            // 1. Beschuldiger erhält Punkt
             challenge.ChallengingPlayer.Score += 1;
             challenge.TargetPlayer.FailedSlips += 1;
+
+            // 2. Vorgehaltene Karte zählt nicht!
+            var slippingCards = challenge.TargetPlayer.Cards
+                .Where(c => c.GameRoundId == challenge.GameRoundId && c.SlippedAt.HasValue && !c.IsUsed)
+                .ToList();
+
+            // 3. Eine Karte ablegen
+            PlayerCard? cardToDiscard = null;
+            if (discardCardId.HasValue)
+            {
+                cardToDiscard = challenge.TargetPlayer.Cards
+                    .FirstOrDefault(c => c.Id == discardCardId.Value && !c.IsUsed);
+            }
+
+            cardToDiscard ??= slippingCards.FirstOrDefault()
+                ?? challenge.TargetPlayer.Cards.FirstOrDefault(c => c.GameRoundId == challenge.GameRoundId && !c.IsUsed);
+
+            if (cardToDiscard != null)
+            {
+                cardToDiscard.IsUsed = true;
+                cardToDiscard.SlippedAt = null;
+            }
+
+            // Andere vorgehaltene Slips zurücksetzen ("zählt nicht")
+            foreach (var slipping in slippingCards.Where(c => c.Id != cardToDiscard?.Id))
+            {
+                slipping.SlippedAt = null;
+            }
+
+            // 4. Zwei neue Karten ziehen
+            var heldPhraseIds = challenge.TargetPlayer.Cards.Select(c => c.PhraseId).ToHashSet();
+            var availablePhrases = await context.Phrases
+                .Where(p => p.IsActive && !heldPhraseIds.Contains(p.Id))
+                .ToListAsync();
+
+            if (availablePhrases.Count < 2)
+            {
+                availablePhrases = await context.Phrases.Where(p => p.IsActive).ToListAsync();
+            }
+
+            var newPhrases = availablePhrases
+                .OrderBy(_ => RandomNumberGenerator.GetInt32(int.MaxValue))
+                .Take(2)
+                .ToList();
+
+            foreach (var phrase in newPhrases)
+            {
+                var newCard = new PlayerCard
+                {
+                    PlayerId = challenge.TargetPlayerId,
+                    PhraseId = phrase.Id,
+                    GameRoundId = challenge.GameRoundId,
+                    IsUsed = false
+                };
+                context.PlayerCards.Add(newCard);
+            }
         }
         else
         {
-            // Falsche Beschuldigung: Phrase bleibt beim Beschuldigten
-            challenge.TargetPlayer.SuccessfulSlips += 1;
-            challenge.TargetPlayer.Score += 1;
-            challenge.ChallengingPlayer.FailedSlips += 1;
+            // Anfechten: "dann wird die Beschuldigung zurückgenommen."
+            // Status wird auf Rejected gesetzt, keine Strafen.
         }
 
         challenge.Status = approved ? ChallengeStatus.Approved : ChallengeStatus.Rejected;
@@ -257,12 +362,16 @@ public class GameService : IGameService
     {
         using var context = _contextFactory.CreateDbContext();
 
+        await CompleteExpiredSlipsInternalAsync(context, gameId);
+
         var game = await context.Games
             .Include(g => g.Players)
                 .ThenInclude(p => p.User)
             .Include(g => g.Players)
                 .ThenInclude(p => p.Cards)
             .Include(g => g.Rounds)
+            .Include(g => g.WinnerPlayer)
+                .ThenInclude(wp => wp!.User)
             .FirstOrDefaultAsync(g => g.Id == gameId) ?? throw new InvalidOperationException("Game not found");
 
         var playerInfos = game.Players.Select(p => new PlayerInfoDto
@@ -271,7 +380,7 @@ public class GameService : IGameService
             Username = p.User.Username,
             Score = p.Score,
             IsReady = p.IsReady,
-            CardCount = p.Cards.Count(c => !c.IsUsed) // Nur Anzahl, nicht die Karten selbst!
+            CardCount = p.Cards.Count(c => !c.IsUsed)
         }).ToList();
 
         var currentRound = game.Rounds
@@ -287,6 +396,12 @@ public class GameService : IGameService
             roundTimeRemaining = Math.Max(0, roundDurationSeconds - elapsedSeconds);
         }
 
+        string? winnerUsername = game.WinnerPlayer?.User?.Username;
+        if (winnerUsername == null && game.WinnerPlayerId.HasValue)
+        {
+            winnerUsername = game.Players.FirstOrDefault(p => p.Id == game.WinnerPlayerId.Value)?.User?.Username;
+        }
+
         return new GameStateDto
         {
             GameId = game.Id,
@@ -295,7 +410,9 @@ public class GameService : IGameService
             Players = playerInfos,
             HostUserId = game.HostId,
             CurrentRound = currentRound?.RoundNumber ?? 0,
-            RoundTimeRemaining = roundTimeRemaining
+            RoundTimeRemaining = roundTimeRemaining,
+            WinnerPlayerId = game.WinnerPlayerId,
+            WinnerUsername = winnerUsername
         };
     }
 
@@ -303,8 +420,12 @@ public class GameService : IGameService
     {
         using var context = _contextFactory.CreateDbContext();
 
-        // Nur Karten der aktuell aktiven Runde zurückgeben — sonst wächst die Hand
-        // über Runden hinweg unbegrenzt und enthält veraltete Karten.
+        var player = await context.Players.FirstOrDefaultAsync(p => p.Id == playerId);
+        if (player != null)
+        {
+            await CompleteExpiredSlipsInternalAsync(context, player.GameId);
+        }
+
         var activeRoundIds = await context.GameRounds
             .Where(gr => gr.Status == RoundStatus.Active &&
                          gr.Game.Players.Any(p => p.Id == playerId))
@@ -314,19 +435,32 @@ public class GameService : IGameService
         var cards = await context.PlayerCards
             .Include(pc => pc.Phrase)
             .Where(pc => pc.PlayerId == playerId && activeRoundIds.Contains(pc.GameRoundId))
-            .Select(pc => new PlayerCardDto
+            .ToListAsync();
+
+        var cardDtos = cards.Select(pc =>
+        {
+            int remainingHold = 0;
+            if (pc.SlippedAt.HasValue && !pc.IsUsed)
+            {
+                var elapsed = (int)(DateTime.UtcNow - pc.SlippedAt.Value).TotalSeconds;
+                remainingHold = Math.Max(0, 30 - elapsed);
+            }
+
+            return new PlayerCardDto
             {
                 CardId = pc.Id,
                 PhraseId = pc.PhraseId,
                 Text = pc.Phrase.Text,
-                IsUsed = pc.IsUsed
-            })
-            .ToListAsync();
+                IsUsed = pc.IsUsed,
+                SlippedAt = pc.SlippedAt,
+                SlippedHoldSecondsRemaining = remainingHold
+            };
+        }).ToList();
 
         return new PlayerHandDto
         {
             PlayerId = playerId,
-            Cards = cards
+            Cards = cardDtos
         };
     }
 
@@ -337,6 +471,65 @@ public class GameService : IGameService
             ?? throw new InvalidOperationException("Game not found");
     }
 
+    private static async Task CompleteExpiredSlipsInternalAsync(SlipItInDbContext context, int gameId)
+    {
+        var expiredThreshold = DateTime.UtcNow.AddSeconds(-30);
+        var candidateCards = await context.PlayerCards
+            .Include(pc => pc.GameRound)
+                .ThenInclude(gr => gr.Game)
+            .Include(pc => pc.Player)
+            .Where(pc => pc.GameRound.GameId == gameId &&
+                         pc.GameRound.Status == RoundStatus.Active &&
+                         !pc.IsUsed &&
+                         pc.SlippedAt.HasValue &&
+                         pc.SlippedAt.Value <= expiredThreshold)
+            .ToListAsync();
+
+        if (candidateCards.Count == 0)
+            return;
+
+        var pendingChallengeTargetIds = await context.SlipChallenges
+            .Where(sc => sc.GameRound.GameId == gameId && sc.Status == ChallengeStatus.Pending)
+            .Select(sc => sc.TargetPlayerId)
+            .Distinct()
+            .ToListAsync();
+
+        bool stateChanged = false;
+        foreach (var card in candidateCards)
+        {
+            if (pendingChallengeTargetIds.Contains(card.PlayerId))
+                continue;
+
+            card.IsUsed = true;
+            card.SlippedAt = null;
+            card.Player.SuccessfulSlips += 1;
+            card.Player.Score += 1;
+            stateChanged = true;
+
+            var remainingCount = await context.PlayerCards
+                .CountAsync(c => c.PlayerId == card.PlayerId && c.GameRoundId == card.GameRoundId && !c.IsUsed && c.Id != card.Id);
+
+            if (remainingCount == 0)
+            {
+                var game = card.GameRound.Game;
+                if (game.Status != GameStatus.Completed)
+                {
+                    game.Status = GameStatus.Completed;
+                    game.EndedAt = DateTime.UtcNow;
+                    game.WinnerPlayerId = card.PlayerId;
+
+                    card.GameRound.Status = RoundStatus.Completed;
+                    card.GameRound.EndedAt = DateTime.UtcNow;
+                }
+            }
+        }
+
+        if (stateChanged)
+        {
+            await context.SaveChangesAsync();
+        }
+    }
+
     private static string GenerateLobbyCode()
     {
         const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

SlipItIn.Server/Services/IGameService.cs

@@ -11,8 +11,9 @@ public interface IGameService
     Task<Game> SetPlayerReadyAsync(int gameId, int playerId);
     Task<List<PlayerCard>> DealCardsAsync(int gameId);
     Task<bool> SubmitSlipAsync(int gameId, int playerId, int cardId);
-    Task<SlipChallenge> CreateChallengeAsync(int gameId, int challengingPlayerId, int targetCardId);
-    Task<SlipChallenge> ResolveChallengeAsync(int challengeId, bool approved);
+    Task<bool> CompleteSlipAsync(int gameId, int cardId, bool force = false);
+    Task<SlipChallenge> CreateChallengeAsync(int gameId, int challengingPlayerId, int targetPlayerId);
+    Task<SlipChallenge> ResolveChallengeAsync(int challengeId, bool approved, int? discardCardId = null);
     Task<GameStateDto> GetGameStateAsync(int gameId);
     Task<PlayerHandDto> GetPlayerHandAsync(int playerId);
     Task<Game> GetGameAsync(int gameId);

SlipItIn.Shared/DTOs/GameStateDto.cs

@@ -10,6 +10,8 @@ public class GameStateDto
     public int HostUserId { get; set; }
     public int CurrentRound { get; set; }
     public int RoundTimeRemaining { get; set; }
+    public int? WinnerPlayerId { get; set; }
+    public string? WinnerUsername { get; set; }
 }
 
 public class PlayerInfoDto
@@ -29,12 +31,55 @@ public class PlayerHandDto
     public List<PlayerCardDto> Cards { get; set; } = [];
 }
 
-public class PlayerCardDto
+public class PlayerCardDto : System.ComponentModel.INotifyPropertyChanged
 {
+    private bool _isUsed;
+    private DateTime? _slippedAt;
+    private int _slippedHoldSecondsRemaining;
+
+    public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
+
     public int CardId { get; set; }
     public int PhraseId { get; set; }
     public string Text { get; set; } = string.Empty;
-    public bool IsUsed { get; set; }
+
+    public bool IsUsed
+    {
+        get => _isUsed;
+        set { _isUsed = value; NotifyStateChanged(); }
+    }
+
+    public DateTime? SlippedAt
+    {
+        get => _slippedAt;
+        set { _slippedAt = value; NotifyStateChanged(); }
+    }
+
+    public int SlippedHoldSecondsRemaining
+    {
+        get => _slippedHoldSecondsRemaining;
+        set
+        {
+            _slippedHoldSecondsRemaining = value;
+            Raise(nameof(SlippedHoldSecondsRemaining));
+            Raise(nameof(SlipButtonText));
+        }
+    }
+
+    public bool IsPendingSlip => SlippedAt.HasValue && !IsUsed;
+    public bool CanSlip => !IsPendingSlip && !IsUsed;
+    public string SlipButtonText => IsPendingSlip ? $"Vorgehalten ({SlippedHoldSecondsRemaining}s)" : "Slip";
+
+    private void NotifyStateChanged()
+    {
+        Raise(nameof(IsUsed));
+        Raise(nameof(SlippedAt));
+        Raise(nameof(IsPendingSlip));
+        Raise(nameof(CanSlip));
+        Raise(nameof(SlipButtonText));
+    }
+
+    private void Raise(string name) => PropertyChanged?.Invoke(this, new(name));
 }
 
 public class SlipChallengeDto
@@ -43,7 +88,8 @@ public class SlipChallengeDto
     public int ChallengingPlayerId { get; set; }
     public string ChallengingPlayerName { get; set; } = string.Empty;
     public int TargetPlayerId { get; set; }
-    public int TargetCardId { get; set; }
+    public string TargetPlayerName { get; set; } = string.Empty;
+    public int? TargetCardId { get; set; }
     public string Status { get; set; } = string.Empty;
     public DateTime CreatedAt { get; set; }
 }

SlipItIn.Shared/Models/Game.cs

@@ -19,9 +19,11 @@ public class Game
     public DateTime? EndedAt { get; set; }
     public int MaxPlayers { get; set; } = 8;
     public int RoundDurationSeconds { get; set; } = 45;
+    public int? WinnerPlayerId { get; set; }
 
     // Navigation
     public User Host { get; set; } = null!;
+    public Player? WinnerPlayer { get; set; }
     public ICollection<Player> Players { get; set; } = [];
     public ICollection<GameRound> Rounds { get; set; } = [];
 }

SlipItIn.Shared/Models/PlayerCard.cs

@@ -7,6 +7,7 @@ public class PlayerCard
     public int PhraseId { get; set; }
     public int GameRoundId { get; set; }
     public bool IsUsed { get; set; } = false;
+    public DateTime? SlippedAt { get; set; }
     public DateTime AssignedAt { get; set; } = DateTime.UtcNow;
 
     // Navigation

SlipItIn.Shared/Models/SlipChallenge.cs

@@ -3,8 +3,8 @@ namespace SlipItIn.Shared.Models;
 public enum ChallengeStatus
 {
     Pending,        // Beschuldigung eingegangen, wartet auf Bestätigung/Ablehnung
-    Approved,       // Beschuldigung war berechtigt → Phrase bleibt beim Beschuldiger
-    Rejected        // Beschuldigung falsch → Beschuldiger erhält die Phrase
+    Approved,       // Beschuldigung war berechtigt -> Beschuldigter muss Karte ablegen und 2 neue ziehen
+    Rejected        // Beschuldigung angefochten -> Beschuldigung zurückgenommen
 }
 
 public class SlipChallenge
@@ -13,7 +13,7 @@ public class SlipChallenge
     public int GameRoundId { get; set; }
     public int ChallengingPlayerId { get; set; }    // Wer beschuldigt
     public int TargetPlayerId { get; set; }         // Wer beschuldigt wird
-    public int TargetCardId { get; set; }           // Welche Phrase wird als falsch behauptet
+    public int? TargetCardId { get; set; }          // Optional: Angefochtene Karte falls bekannt/zugeordnet
     public ChallengeStatus Status { get; set; } = ChallengeStatus.Pending;
     public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
     public DateTime? ResolvedAt { get; set; }
@@ -22,5 +22,5 @@ public class SlipChallenge
     public GameRound GameRound { get; set; } = null!;
     public Player ChallengingPlayer { get; set; } = null!;  // Der Beschuldiger
     public Player TargetPlayer { get; set; } = null!;       // Der Beschuldigte
-    public PlayerCard TargetCard { get; set; } = null!;     // Die angefochtene Phrase
+    public PlayerCard? TargetCard { get; set; }             // Die angefochtene Phrase (optional)
 }

SlipItIn/Services/Interfaces/ISignalRService.cs

@@ -23,8 +23,9 @@ public interface ISignalRService
     Task PlayerReadyAsync(int gameId, int playerId);
     Task StartGameAsync(int gameId);
     Task SubmitSlipAsync(int gameId, int playerId, int cardId);
+    Task ChallengePlayerAsync(int gameId, int challengingPlayerId, int targetPlayerId);
     Task ChallengeSlipAsync(int gameId, int challengingPlayerId, int targetCardId);
-    Task ResolveChallengeAsync(int challengeId, bool approved);
+    Task ResolveChallengeAsync(int challengeId, bool approved, int? discardCardId = null);
     Task RequestGameStateAsync(int gameId);
 
     Task SendQueuedActionAsync(QueuedGameAction action);

SlipItIn/Services/SignalRService.cs

@@ -120,11 +120,14 @@ public class SignalRService : ISignalRService, IAsyncDisposable
     public Task SubmitSlipAsync(int gameId, int playerId, int cardId)
         => InvokeAsync("SubmitSlip", gameId, playerId, cardId);
 
+    public Task ChallengePlayerAsync(int gameId, int challengingPlayerId, int targetPlayerId)
+        => InvokeAsync("ChallengePlayer", gameId, challengingPlayerId, targetPlayerId);
+
     public Task ChallengeSlipAsync(int gameId, int challengingPlayerId, int targetCardId)
         => InvokeAsync("ChallengeSlip", gameId, challengingPlayerId, targetCardId);
 
-    public Task ResolveChallengeAsync(int challengeId, bool approved)
-        => InvokeAsync("ResolveChallenge", challengeId, approved);
+    public Task ResolveChallengeAsync(int challengeId, bool approved, int? discardCardId = null)
+        => InvokeAsync("ResolveChallenge", challengeId, approved, discardCardId);
 
     public Task RequestGameStateAsync(int gameId) => InvokeAsync("RequestGameState", gameId);
 
@@ -249,9 +252,7 @@ public class SignalRService : ISignalRService, IAsyncDisposable
         return element.ValueKind switch
         {
             JsonValueKind.String => element.GetString(),
-            JsonValueKind.Number when element.TryGetInt32(out var i) => i,
-            JsonValueKind.Number when element.TryGetInt64(out var l) => l,
-            JsonValueKind.Number when element.TryGetDouble(out var d) => d,
+            JsonValueKind.Number => element.TryGetInt32(out var i) ? i : element.GetDouble(),
             JsonValueKind.True => true,
             JsonValueKind.False => false,
             JsonValueKind.Null => null,
@@ -262,6 +263,20 @@ public class SignalRService : ISignalRService, IAsyncDisposable
     public async ValueTask DisposeAsync()
     {
         if (_hubConnection is not null)
+        {
+            try
+            {
                 await _hubConnection.DisposeAsync();
             }
+            catch
+            {
+                // Best effort
+            }
+
+            _hubConnection = null;
+        }
+
+        _connectLock.Dispose();
+        GC.SuppressFinalize(this);
+    }
 }

SlipItIn/ViewModels/GameBoardViewModel.cs

@@ -26,16 +26,16 @@ public partial class GameBoardViewModel : BaseViewModel,
     private partial int GameId { get; set; }
 
     [ObservableProperty]
-    private partial int CurrentRound { get; set; }
+    public partial int CurrentRound { get; set; }
 
     [ObservableProperty]
-    private partial int RoundTimeRemaining { get; set; }
+    public partial int RoundTimeRemaining { get; set; }
 
     [ObservableProperty]
-    private partial bool IsConnected { get; set; }
+    public partial bool IsConnected { get; set; }
 
     [ObservableProperty]
-    private partial bool IsSyncing { get; set; }
+    public partial bool IsSyncing { get; set; }
 
     [ObservableProperty]
     public partial bool IsChallengeVisible { get; set; }
@@ -49,6 +49,18 @@ public partial class GameBoardViewModel : BaseViewModel,
     [ObservableProperty]
     public partial int PendingSyncActions { get; set; }
 
+    [ObservableProperty]
+    public partial bool IsGameOver { get; set; }
+
+    [ObservableProperty]
+    public partial string GameOverMessage { get; set; } = string.Empty;
+
+    [ObservableProperty]
+    public partial PlayerInfoDto? SelectedOtherPlayer { get; set; }
+
+    [ObservableProperty]
+    public partial PlayerCardDto? SelectedCardToDiscard { get; set; }
+
     public ObservableCollection<PlayerCardDto> MyCards { get; } = [];
     public ObservableCollection<PlayerInfoDto> OtherPlayers { get; } = [];
 
@@ -71,9 +83,8 @@ public partial class GameBoardViewModel : BaseViewModel,
 
     private void OnRoundTimerTick(object? sender, EventArgs e)
     {
-        if (RoundTimeRemaining <= 0)
-            return;
-
+        if (RoundTimeRemaining > 0)
+        {
             var elapsed = (int)(DateTime.UtcNow - _lastStateUtc).TotalSeconds;
             if (elapsed > 0)
             {
@@ -82,6 +93,37 @@ public partial class GameBoardViewModel : BaseViewModel,
             }
         }
 
+        // 30-Sekunden Countdown für vorgehaltene Slips aktualisieren
+        foreach (var card in MyCards)
+        {
+            if (card.SlippedAt.HasValue && !card.IsUsed)
+            {
+                var elapsedSlip = (int)(DateTime.UtcNow - card.SlippedAt.Value).TotalSeconds;
+                var remaining = Math.Max(0, 30 - elapsedSlip);
+                if (card.SlippedHoldSecondsRemaining != remaining)
+                {
+                    card.SlippedHoldSecondsRemaining = remaining;
+                    // Zeit abgelaufen: Server-Zustand und Hand neu laden, damit die Karte abgelegt erscheint
+                    if (remaining == 0 && _signalR.IsConnected && GameId > 0)
+                        _ = RefreshAfterHoldAsync();
+                }
+            }
+        }
+    }
+
+    private async Task RefreshAfterHoldAsync()
+    {
+        try
+        {
+            await Task.Delay(1000);
+            await _signalR.RequestGameStateAsync(GameId);
+        }
+        catch
+        {
+            // Nächster Timer-Tick/Refresh versucht es erneut
+        }
+    }
+
     [RelayCommand]
     private Task RefreshStateAsync()
     {
@@ -94,7 +136,7 @@ public partial class GameBoardViewModel : BaseViewModel,
     [RelayCommand]
     private async Task SubmitSlipAsync(PlayerCardDto? card)
     {
-        if (card is null)
+        if (card is null || IsGameOver || card.IsPendingSlip)
             return;
 
         await RunSafeAsync(async () =>
@@ -103,6 +145,10 @@ public partial class GameBoardViewModel : BaseViewModel,
             if (playerId <= 0 || GameId <= 0)
                 throw new InvalidOperationException("Spielzustand nicht verfügbar.");
 
+            // Lokales Feedback sofort setzen: 30s Vorhaltezeit
+            card.SlippedAt = DateTime.UtcNow;
+            card.SlippedHoldSecondsRemaining = 30;
+
             if (_signalR.IsConnected)
             {
                 await _signalR.SubmitSlipAsync(GameId, playerId, card.CardId);
@@ -116,9 +162,9 @@ public partial class GameBoardViewModel : BaseViewModel,
     }
 
     [RelayCommand]
-    private async Task ChallengeCardAsync(PlayerCardDto? card)
+    private async Task ChallengePlayerAsync(PlayerInfoDto? targetPlayer)
     {
-        if (card is null)
+        if (targetPlayer is null || IsGameOver)
             return;
 
         await RunSafeAsync(async () =>
@@ -129,16 +175,24 @@ public partial class GameBoardViewModel : BaseViewModel,
 
             if (_signalR.IsConnected)
             {
-                await _signalR.ChallengeSlipAsync(GameId, playerId, card.CardId);
+                await _signalR.ChallengePlayerAsync(GameId, playerId, targetPlayer.PlayerId);
             }
             else
             {
-                await _gameStateService.EnqueueActionAsync("ChallengeSlip", GameId, playerId, card.CardId);
+                await _gameStateService.EnqueueActionAsync("ChallengePlayer", GameId, playerId, targetPlayer.PlayerId);
                 StatusMessage = "Offline: Aktion wurde zwischengespeichert.";
             }
+
+            StatusMessage = $"Beschuldigung gegen {targetPlayer.Username} eingereicht!";
         });
     }
 
+    [RelayCommand]
+    private Task ChallengeSelectedPlayerAsync()
+    {
+        return ChallengePlayerAsync(SelectedOtherPlayer);
+    }
+
     [RelayCommand]
     private async Task ApproveChallengeAsync()
     {
@@ -146,18 +200,21 @@ public partial class GameBoardViewModel : BaseViewModel,
             return;
 
         var challengeId = PendingChallenge.ChallengeId;
+        var discardId = SelectedCardToDiscard?.CardId;
+
         PendingChallenge = null;
         IsChallengeVisible = false;
+        SelectedCardToDiscard = null;
 
         await RunSafeAsync(async () =>
         {
             if (_signalR.IsConnected)
             {
-                await _signalR.ResolveChallengeAsync(challengeId, true);
+                await _signalR.ResolveChallengeAsync(challengeId, true, discardId);
             }
             else
             {
-                await _gameStateService.EnqueueActionAsync("ResolveChallenge", challengeId, true);
+                await _gameStateService.EnqueueActionAsync("ResolveChallenge", challengeId, true, discardId);
                 StatusMessage = "Offline: Antwort wurde zwischengespeichert.";
             }
         });
@@ -172,6 +229,7 @@ public partial class GameBoardViewModel : BaseViewModel,
         var challengeId = PendingChallenge.ChallengeId;
         PendingChallenge = null;
         IsChallengeVisible = false;
+        SelectedCardToDiscard = null;
 
         await RunSafeAsync(async () =>
         {
@@ -196,6 +254,19 @@ public partial class GameBoardViewModel : BaseViewModel,
             RoundTimeRemaining = message.Value.RoundTimeRemaining;
             _lastStateUtc = DateTime.UtcNow;
 
+            if (string.Equals(message.Value.Status, "Completed", StringComparison.OrdinalIgnoreCase))
+            {
+                IsGameOver = true;
+                GameOverMessage = !string.IsNullOrEmpty(message.Value.WinnerUsername)
+                    ? $"🎉 {message.Value.WinnerUsername} hat alle Phrasen abgelegt und gewonnen! 🎉"
+                    : "🎉 Das Spiel ist beendet! 🎉";
+            }
+            else
+            {
+                IsGameOver = false;
+                GameOverMessage = string.Empty;
+            }
+
             var me = _authSession.CurrentUser?.Username;
             var others = message.Value.Players
                 .Where(p => !string.Equals(p.Username, me, StringComparison.OrdinalIgnoreCase))
@@ -204,7 +275,18 @@ public partial class GameBoardViewModel : BaseViewModel,
             OtherPlayers.Clear();
             foreach (var player in others)
                 OtherPlayers.Add(player);
+
+            if (SelectedOtherPlayer != null && !otherPlayersExist(SelectedOtherPlayer.PlayerId))
+            {
+                SelectedOtherPlayer = OtherPlayers.FirstOrDefault();
+            }
+            else if (SelectedOtherPlayer == null && OtherPlayers.Count > 0)
+            {
+                SelectedOtherPlayer = OtherPlayers.FirstOrDefault();
+            }
         });
+
+        bool otherPlayersExist(int id) => message.Value.Players.Any(p => p.PlayerId == id);
     }
 
     public void Receive(PlayerHandChangedMessage message)
@@ -213,7 +295,14 @@ public partial class GameBoardViewModel : BaseViewModel,
         {
             MyCards.Clear();
             foreach (var card in message.Value.Cards.Where(card => !card.IsUsed))
+            {
                 MyCards.Add(card);
+            }
+
+            if (SelectedCardToDiscard == null && MyCards.Count > 0)
+            {
+                SelectedCardToDiscard = MyCards.FirstOrDefault(c => c.IsPendingSlip) ?? MyCards.FirstOrDefault();
+            }
         });
     }
 
@@ -222,6 +311,7 @@ public partial class GameBoardViewModel : BaseViewModel,
         MainThread.BeginInvokeOnMainThread(() =>
         {
             PendingChallenge = message.Value;
+            SelectedCardToDiscard = MyCards.FirstOrDefault(c => c.IsPendingSlip) ?? MyCards.FirstOrDefault();
             IsChallengeVisible = true;
         });
     }
@@ -233,12 +323,12 @@ public partial class GameBoardViewModel : BaseViewModel,
 
     public void Receive(SyncStateChangedMessage message)
     {
-        MainThread.BeginInvokeOnMainThread((Action)(() =>
+        MainThread.BeginInvokeOnMainThread(() =>
         {
             IsSyncing = message.Value.IsSyncing;
             SyncStatusText = message.Value.StatusText;
             PendingSyncActions = message.Value.PendingActions;
-        }));
+        });
     }
 
     public void Receive(ConnectionStateChangedMessage message)

SlipItIn/Views/ChallengeNotificationOverlay.xaml

@@ -6,14 +6,32 @@
              x:DataType="vm:GameBoardViewModel"
              IsVisible="{Binding IsChallengeVisible}">
     <Grid BackgroundColor="#88000000" Padding="24">
-        <Border VerticalOptions="Center" HorizontalOptions="Center" Stroke="LightGray" StrokeShape="RoundRectangle 12" BackgroundColor="White" Padding="16">
-            <VerticalStackLayout Spacing="10">
-                <Label Text="Du wurdest beschuldigt" FontAttributes="Bold" />
-                <Label Text="{Binding PendingChallenge.ChallengeId, StringFormat='ChallengeId: {0}'}" />
-                <HorizontalStackLayout>
-                    <Button Text="Bestätigen" Command="{Binding ApproveChallengeCommand}" />
-                    <Button Text="Ablehnen" Command="{Binding RejectChallengeCommand}" />
-                </HorizontalStackLayout>
+        <Border VerticalOptions="Center" HorizontalOptions="Center" Stroke="LightGray" StrokeShape="RoundRectangle 12" BackgroundColor="White" Padding="20" WidthRequest="340">
+            <VerticalStackLayout Spacing="12">
+                <Label Text="⚠️ Du wurdest beschuldigt!" FontSize="18" FontAttributes="Bold" TextColor="#D32F2F" HorizontalTextAlignment="Center" />
+                <Label Text="{Binding PendingChallenge.ChallengingPlayerName, StringFormat='{0} behauptet, du hast eine geheime Phrase platziert!'}" 
+                       HorizontalTextAlignment="Center" FontSize="14" />
+
+                <Label Text="Karte zum Ablegen wählen (falls du annimmst):" FontAttributes="Bold" FontSize="13" Margin="0,6,0,0" />
+                <Picker ItemsSource="{Binding MyCards}"
+                        ItemDisplayBinding="{Binding Text}"
+                        SelectedItem="{Binding SelectedCardToDiscard}"
+                        Title="Karte auswählen" />
+
+                <VerticalStackLayout Spacing="8" Margin="0,10,0,0">
+                    <Button Text="Beschuldigung annehmen" 
+                            Command="{Binding ApproveChallengeCommand}" 
+                            BackgroundColor="#388E3C" 
+                            TextColor="White" />
+                    <Label Text="Du legst 1 Karte ab und ziehst 2 neue." FontSize="11" TextColor="Gray" HorizontalTextAlignment="Center" />
+
+                    <Button Text="Beschuldigung anfechten" 
+                            Command="{Binding RejectChallengeCommand}" 
+                            BackgroundColor="#E53935" 
+                            TextColor="White" 
+                            Margin="0,8,0,0" />
+                    <Label Text="Beschuldigung wird zurückgenommen." FontSize="11" TextColor="Gray" HorizontalTextAlignment="Center" />
+                </VerticalStackLayout>
             </VerticalStackLayout>
         </Border>
     </Grid>

SlipItIn/Views/GameBoardPage.xaml

@@ -2,33 +2,47 @@
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:views="clr-namespace:SlipItIn.Views"
+             xmlns:vm="clr-namespace:SlipItIn.ViewModels"
+             xmlns:dto="clr-namespace:SlipItIn.Shared.DTOs;assembly=SlipItIn.Shared"
              x:Class="SlipItIn.Views.GameBoardPage"
+             x:DataType="vm:GameBoardViewModel"
              Title="Game Board">
     <Grid>
         <ScrollView>
             <VerticalStackLayout Padding="24" Spacing="12">
                 <Label Text="Spielbrett" FontSize="24" FontAttributes="Bold" />
+
+                <!-- Gewinner / Spielende Banner -->
+                <Border BackgroundColor="#E8F5E9" Stroke="#4CAF50" StrokeThickness="2" StrokeShape="RoundRectangle 12" Padding="16" IsVisible="{Binding IsGameOver}">
+                    <VerticalStackLayout Spacing="6">
+                        <Label Text="🏆 SPIEL VORBEI 🏆" FontSize="20" FontAttributes="Bold" TextColor="#2E7D32" HorizontalTextAlignment="Center" />
+                        <Label Text="{Binding GameOverMessage}" TextColor="#2E7D32" FontAttributes="Bold" FontSize="16" HorizontalTextAlignment="Center" />
+                    </VerticalStackLayout>
+                </Border>
+
                 <Label Text="{Binding CurrentRound, StringFormat='Runde: {0}'}" />
-                <Label Text="{Binding RoundTimeRemaining, StringFormat='Verbleibende Zeit: {0}s'}" />
                 <Label Text="{Binding IsConnected, StringFormat='Verbindung: {0}'}" TextColor="Gray" />
                 <Label Text="{Binding SyncStatusText}" TextColor="DodgerBlue" IsVisible="{Binding IsSyncing}" />
                 <Label Text="{Binding PendingSyncActions, StringFormat='Offline-Aktionen: {0}'}" TextColor="Gray" />
 
                 <Button Text="Status aktualisieren" Command="{Binding RefreshStateCommand}" />
 
-                <Label Text="Meine Phrasen" FontAttributes="Bold" />
+                <!-- Eigene Handkarten -->
+                <Label Text="Meine Phrasen" FontAttributes="Bold" FontSize="18" />
                 <CollectionView ItemsSource="{Binding MyCards}">
                     <CollectionView.EmptyView>
-                        <Label Text="Keine ungespielten Phrasen mehr." />
+                        <Label Text="Keine ungespielten Phrasen mehr." FontAttributes="Italic" />
                     </CollectionView.EmptyView>
                     <CollectionView.ItemTemplate>
-                        <DataTemplate>
-                            <Border Margin="0,4" Padding="10" Stroke="LightGray" StrokeThickness="1" StrokeShape="RoundRectangle 10" BackgroundColor="White">
-                                <VerticalStackLayout>
-                                    <Label Text="{Binding Text}" />
-                                    <HorizontalStackLayout>
-                                        <Button Text="Slip" Command="{Binding Source={RelativeSource AncestorType={x:Type ContentPage}}, Path=BindingContext.SubmitSlipCommand}" CommandParameter="{Binding .}" />
-                                        <Button Text="Beschuldigen" Command="{Binding Source={RelativeSource AncestorType={x:Type ContentPage}}, Path=BindingContext.ChallengeCardCommand}" CommandParameter="{Binding .}" />
+                        <DataTemplate x:DataType="dto:PlayerCardDto">
+                            <Border Margin="0,4" Padding="12" Stroke="LightGray" StrokeThickness="1" StrokeShape="RoundRectangle 10" BackgroundColor="White">
+                                <VerticalStackLayout Spacing="8">
+                                    <Label Text="{Binding Text}" FontSize="15" />
+                                    <Label Text="Wird für 30s vorgehalten." TextColor="#F57C00" FontAttributes="Italic" IsVisible="{Binding IsPendingSlip}" />
+                                    <HorizontalStackLayout Spacing="8">
+                                        <Button Text="{Binding SlipButtonText}" IsEnabled="{Binding CanSlip}"
+                                                Command="{Binding Source={RelativeSource AncestorType={x:Type ContentPage}}, Path=BindingContext.SubmitSlipCommand}" 
+                                                CommandParameter="{Binding .}" />
                                     </HorizontalStackLayout>
                                 </VerticalStackLayout>
                             </Border>
@@ -36,11 +50,30 @@
                     </CollectionView.ItemTemplate>
                 </CollectionView>
 
-                <Label Text="Andere Spieler" FontAttributes="Bold" />
+                <!-- Andere Spieler & Beschuldigen-Sektion -->
+                <Label Text="Andere Spieler &amp; Beschuldigen" FontAttributes="Bold" FontSize="18" Margin="0,12,0,0" />
+
+                <!-- Liste aller anderen Spieler mit Schnell-Beschuldigen -->
                 <CollectionView ItemsSource="{Binding OtherPlayers}">
+                    <CollectionView.EmptyView>
+                        <Label Text="Keine anderen Spieler in der Lobby." FontAttributes="Italic" />
+                    </CollectionView.EmptyView>
                     <CollectionView.ItemTemplate>
-                        <DataTemplate>
-                            <Label Text="{Binding Username}" />
+                        <DataTemplate x:DataType="dto:PlayerInfoDto">
+                            <Border Margin="0,4" Padding="10" Stroke="LightGray" StrokeThickness="1" StrokeShape="RoundRectangle 8" BackgroundColor="White">
+                                <Grid ColumnDefinitions="*, Auto" VerticalOptions="Center">
+                                    <VerticalStackLayout Grid.Column="0">
+                                        <Label Text="{Binding Username}" FontAttributes="Bold" FontSize="15" />
+                                        <Label Text="{Binding CardCount, StringFormat='Verbleibende Karten: {0}'}" FontSize="12" TextColor="Gray" />
+                                    </VerticalStackLayout>
+                                    <Button Grid.Column="1" 
+                                            Text="Beschuldigen" 
+                                            Command="{Binding Source={RelativeSource AncestorType={x:Type ContentPage}}, Path=BindingContext.ChallengePlayerCommand}" 
+                                            CommandParameter="{Binding .}" 
+                                            BackgroundColor="#D32F2F" 
+                                            TextColor="White" />
+                                </Grid>
+                            </Border>
                         </DataTemplate>
                     </CollectionView.ItemTemplate>
                 </CollectionView>