Removed unnecessary imports

app/src/main/java/org/toop/app/Server.java

@@ -22,6 +22,7 @@ import org.toop.framework.networking.server.gateway.NettyGatewayServer;
 import org.toop.framework.game.players.LocalPlayer;
 import org.toop.local.AppContext;
 
+import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.Executors;
@@ -117,9 +118,8 @@ public final class Server {
 				return;
 			}
 
-			primary = new ServerView(user, this::sendChallenge, () -> {
-                GlobalEventBus.get().post(new NetworkEvents.SendCommand(clientId, "tournament", "start", "tic-tac-toe"));
-            }, clientId);
+			primary = new ServerView(user, this::sendChallenge, user, clientId);
+
 			WidgetContainer.getCurrentView().transitionNextCustom(primary, "disconnect", this::disconnect);
 
 			a.unsubscribe("connecting");
@@ -161,7 +161,8 @@ public final class Server {
                 .listen(NetworkEvents.GameResultResponse.class, this::handleGameResult, false, "game-result")
                 .listen(NetworkEvents.GameMoveResponse.class, this::handleReceivedMove, false, "game-move")
                 .listen(NetworkEvents.YourTurnResponse.class, this::handleYourTurn, false, "your-turn")
-				.listen(NetworkEvents.ClosedConnection.class, this::closedConnection, false, "closed-connection");
+				.listen(NetworkEvents.ClosedConnection.class, this::closedConnection, false, "closed-connection")
+                .listen(NetworkEvents.TournamentResultResponse.class, this::handleTournamentResult, false, "tournament-result");
 
 		connectFlow = a;
 	}
@@ -240,6 +241,12 @@ public final class Server {
         gameController.gameFinished(response);
     }
 
+    private void handleTournamentResult(NetworkEvents.TournamentResultResponse response) {
+        IO.println(response.gameType());
+        IO.println(Arrays.toString(response.names()));
+        IO.println(Arrays.toString(response.scores()));
+    }
+
     private void handleReceivedMove(NetworkEvents.GameMoveResponse response) {
         if (gameController == null) {
             return;
@@ -339,7 +346,8 @@ public final class Server {
 
 	private void gamesListFromServerHandler(NetworkEvents.GamelistResponse event) {
 		gameList.clear();
-		var gl = List.of(event.gamelist());
+		var gl = new java.util.ArrayList<>(List.of(event.gamelist()));
+        gl.sort(String::compareTo);
 		gameList.addAll(gl);
 		primary.updateGameList(gl);
 	}

app/src/main/java/org/toop/app/widget/view/ServerView.java

@@ -7,6 +7,7 @@ import org.toop.app.widget.Primitive;
 import org.toop.app.widget.complex.ViewWidget;
 
 import java.io.Reader;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
 import java.util.function.Consumer;
@@ -16,41 +17,42 @@ import javafx.geometry.Pos;
 import javafx.scene.control.Button;
 import javafx.scene.control.ListView;
 import org.toop.framework.eventbus.EventFlow;
+import org.toop.framework.eventbus.GlobalEventBus;
 import org.toop.framework.networking.connection.events.NetworkEvents;
 
 public final class ServerView extends ViewWidget {
 	private final String user;
 	private final Consumer<String> onPlayerClicked;
-    private final Runnable tournamentRequest;
 	private final long clientId;
 
-	private final ComboBox<String> gameList;
+	private final ComboBox<String> gameListSub;
+    private final ComboBox<String> gameListTour;
 	private final ListView<Button> listView;
 	private Button subscribeButton;
 
-	public ServerView(String user, Consumer<String> onPlayerClicked, Runnable tournamentRequest, long clientId) {
+	public ServerView(String user, Consumer<String> onPlayerClicked, String userName, long clientId) {
 		this.user = user;
 		this.onPlayerClicked = onPlayerClicked;
-        this.tournamentRequest = tournamentRequest;
 		this.clientId = clientId;
 
-		this.gameList = new ComboBox<>();
+		this.gameListSub = new ComboBox<>();
+        this.gameListTour = new ComboBox<>();
 		this.listView = new ListView<>();
 
-		setupLayout();
+		setupLayout(userName);
 	}
 
-	private void setupLayout() {
+	private void setupLayout(String userName) {
 		var playerHeader = Primitive.header(user, false);
 
 		subscribeButton = Primitive.button(
 				"subscribe",
-				() -> new EventFlow().addPostEvent(new NetworkEvents.SendSubscribe(clientId, gameList.getValue())).postEvent(),
+				() -> new EventFlow().addPostEvent(new NetworkEvents.SendSubscribe(clientId, gameListSub.getValue())).postEvent(),
 				false,
 				true
 		); // TODO localize
 
-		var subscribe = Primitive.hbox(gameList, subscribeButton);
+		var subscribe = Primitive.hbox(gameListSub, subscribeButton);
 
 		var playerListSection = Primitive.vbox(
 			playerHeader,
@@ -61,16 +63,19 @@ public final class ServerView extends ViewWidget {
 
 		add(Pos.CENTER, playerListSection);
 
-        var tournamentButton = Primitive.vbox(
-            Primitive.button(
-                    "tournament",
-                    tournamentRequest,
-                    false,
-                    false
-            )
-        );
+        if (userName.equals("host")) {
+            var tournamentButton = Primitive.hbox(
+                    gameListTour,
+                    Primitive.button(
+                            "tournament",
+                            () -> GlobalEventBus.get().post(new NetworkEvents.SendCommand(clientId, "tournament", "start", gameListTour.getValue())),
+                            false,
+                            false
+                    )
+            );
 
-        add(Pos.BOTTOM_CENTER, tournamentButton);
+            add(Pos.BOTTOM_CENTER, tournamentButton);
+        }
 
 		var disconnectButton = Primitive.button(
 				"disconnect", () -> transitionPrevious(), false);
@@ -91,9 +96,13 @@ public final class ServerView extends ViewWidget {
 
 	public void updateGameList(List<String> games) {
 		Platform.runLater(() -> {
-			gameList.getItems().clear();
-			gameList.setItems(FXCollections.observableArrayList(games));
-			gameList.getSelectionModel().select(0);
+			gameListSub.getItems().clear();
+			gameListSub.setItems(FXCollections.observableArrayList(games));
+			gameListSub.getSelectionModel().select(0);
+
+            gameListTour.getItems().clear();
+            gameListTour.setItems(FXCollections.observableArrayList(games));
+            gameListTour.getSelectionModel().select(0);
 		});
 	}
 

framework/src/main/java/org/toop/framework/networking/connection/events/NetworkEvents.java

@@ -65,6 +65,9 @@ public class NetworkEvents extends EventsBase {
     public record GameResultResponse(long clientId, String condition)
             implements GenericEvent {}
 
+    public record TournamentResultResponse(long clientId, String gameType, String[] names, Integer[] scores)
+            implements GenericEvent {}
+
     /** Indicates that a game move has been processed or received. */
     public record GameMoveResponse(long clientId, String player, String move, String details)
             implements GenericEvent {}
@@ -219,4 +222,5 @@ public class NetworkEvents extends EventsBase {
     /** Response to a {@link ChangeAddress} event, carrying the success result. */
     public record ChangeAddressResponse(boolean successful, long identifier)
             implements ResponseToUniqueEvent {}
+
 }

framework/src/main/java/org/toop/framework/networking/connection/handlers/NetworkingGameClientHandler.java

@@ -3,6 +3,7 @@ package org.toop.framework.networking.connection.handlers;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 
+import java.util.Arrays;
 import java.util.regex.MatchResult;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -94,6 +95,9 @@ public class NetworkingGameClientHandler extends ChannelInboundHandlerAdapter {
                     case "HELP":
                         helpHandler(recSrvRemoved);
                         return;
+                    case "RESULTS":
+                        resultsHandler(recSrvRemoved);
+                        return;
                     default:
                         // return
                 }
@@ -103,6 +107,34 @@ public class NetworkingGameClientHandler extends ChannelInboundHandlerAdapter {
         }
     }
 
+    private static String extract(String input, String key) {
+        Pattern p = Pattern.compile(
+                key + "\\s*:\\s*(\\[[^]]*]|\"[^\"]*\")",
+                Pattern.CASE_INSENSITIVE
+        );
+        Matcher m = p.matcher(input);
+        return m.find() ? m.group(1) : null;
+    }
+
+    private void resultsHandler(String rec) {
+        IO.println(rec);
+
+        String gameTypeRaw = extract(rec, "GAMETYPE");
+        String usersRaw    = extract(rec, "USERS");
+        String scoresRaw   = extract(rec, "SCORES");
+
+        String[] users = Arrays.stream(usersRaw.substring(1, usersRaw.length() - 1).split(","))
+                .map(s -> s.trim().replace("\"", ""))
+                .toArray(String[]::new);
+
+        Integer[] scores = Arrays.stream(scoresRaw.substring(1, scoresRaw.length() - 1).split(","))
+                .map(String::trim)
+                .map(Integer::parseInt)
+                .toArray(Integer[]::new);
+
+        eventBus.post(new NetworkEvents.TournamentResultResponse(this.connectionId, gameTypeRaw, users, scores));
+    }
+
     private void gameMoveHandler(String rec) {
         String[] msg =
                 Pattern.compile(

framework/src/main/java/org/toop/framework/networking/server/Server.java

@@ -1,5 +1,6 @@
 package org.toop.framework.networking.server;
 
+import com.google.gson.Gson;
 import org.toop.framework.game.players.ServerPlayer;
 import org.toop.framework.gameFramework.model.game.TurnBasedGame;
 import org.toop.framework.networking.server.challenges.gamechallenge.GameChallenge;
@@ -9,8 +10,7 @@ import org.toop.framework.networking.server.stores.ClientStore;
 import org.toop.framework.networking.server.stores.SubscriptionStore;
 import org.toop.framework.networking.server.stores.TurnBasedGameStore;
 import org.toop.framework.networking.server.stores.TurnBasedGameTypeStore;
-import org.toop.framework.networking.server.tournaments.BasicTournament;
-import org.toop.framework.networking.server.tournaments.Tournament;
+import org.toop.framework.networking.server.tournaments.*;
 import org.toop.framework.utils.ImmutablePair;
 
 import java.util.*;
@@ -221,7 +221,6 @@ public class Server implements GameServer<TurnBasedGame, NettyClient, Long> {
                 }
 
                 if  (userInGame) { continue; }
-                //
 
                 int first = Math.max(left, right);
                 int second = Math.min(left, right);
@@ -265,17 +264,48 @@ public class Server implements GameServer<TurnBasedGame, NettyClient, Long> {
     }
 
     public void startTournament(Tournament tournament, String gameType) {
-        tournament.init(clientStore.all().toArray(new NettyClient[0]));
-        new Thread(() -> tournament.start(gameType)).start();
+        try {
+            var tb = new TournamentBuilder();
+            var cTournament = tb.create(
+                    tournament,
+                    onlineUsers(),
+                    this,
+                    new BasicScoreManager(new HashMap<>()),
+                    new BasicMatchManager(),
+                    new RandomShuffle()
+            );
+            new Thread(() -> cTournament.run(gameType)).start();
+        } catch (IllegalArgumentException e) {
+            getUser("host").send("ERR not enough clients to start a tournament");
+        } catch (RuntimeException e) {
+            getUser("host").send("ERR no matches could be created to start a tournament with");
+        }
     }
 
-    public void endTournament(Map<NettyClient, Integer> score) {
-        IO.println("TOUNAMENT WINNER IS: "); // TODO
-        IO.println("SCORES");
-        IO.println("-----------------------------------");
-        for (var a : score.entrySet()) {
-            String b = "" + a.getKey().name() + ": " + a.getValue();
-            IO.println(b);
+    public void endTournament(Map<NettyClient, Integer> score, String gameType) {
+
+        List<String> u = new ArrayList<>();
+        List<Integer> s = new ArrayList<>();
+
+        for (var entry : score.entrySet()) {
+            u.add(entry.getKey().name());
+            s.add(entry.getValue());
+        }
+
+        Gson gson = new Gson();
+
+        String users = gson.toJson(u);
+        String scores = gson.toJson(s);
+
+        String msg = String.format(
+                "SVR RESULTS {GAMETYPE: \"%s\", USERS: %s, SCORES: %s, TOURNAMENT: 1}",
+                gameType,
+                users,
+                scores
+        );
+
+        for (var user : onlineUsers()) {
+            user.send(msg);
         }
     }
 }

framework/src/main/java/org/toop/framework/networking/server/handlers/MessageHandler.java

@@ -116,7 +116,7 @@ public class MessageHandler implements Handler<ParsedMessage> {
         if (!client.name().equalsIgnoreCase("host")) return;
 
         if (p.args()[0].equalsIgnoreCase("start") && p.args().length > 1) {
-            server.startTournament(new BasicTournament(server), p.args()[1]);
+            server.startTournament(new BasicTournament(), p.args()[1]);
         }
     }
 }

framework/src/main/java/org/toop/framework/networking/server/tournaments/BasicMatchManager.java

@@ -0,0 +1,85 @@
+package org.toop.framework.networking.server.tournaments;
+
+import org.toop.framework.gameFramework.model.game.TurnBasedGame;
+import org.toop.framework.networking.server.OnlineGame;
+import org.toop.framework.networking.server.Server;
+import org.toop.framework.networking.server.client.NettyClient;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.atomic.AtomicReference;
+
+public class BasicMatchManager implements MatchManager {
+
+    private final HashMap<NettyClient, List<NettyClient>> matches = new HashMap<>(); // TODO store
+    private final ArrayList<TournamentMatch> matchOrder = new ArrayList<>(); // TODO store
+    private int matchIndex = 0;
+
+    public BasicMatchManager() {}
+
+    @Override
+    public void addClient(NettyClient client) {
+        matches.putIfAbsent(client, new ArrayList<>());
+    }
+
+    @Override
+    public List<NettyClient> getClients() {
+        return matches.keySet().stream().toList();
+    }
+
+    @Override
+    public void createMatches() {
+        for (var match : matches.entrySet()) {
+            for (var matchNoSelf : matches.keySet()) {
+                if (match.getKey() == matchNoSelf) continue;
+
+                match.getValue().addLast(matchNoSelf);
+            }
+        }
+
+        for (var client : matches.entrySet()) {
+            for (var opponent : client.getValue()) {
+                matchOrder.addLast(new TournamentMatch(client.getKey(), opponent));
+            }
+        }
+    }
+
+    @Override
+    public TournamentMatch next() {
+        matchIndex++;
+        if (matchIndex >= matchOrder.size()) return null;
+
+        return matchOrder.get(matchIndex);
+    }
+
+    @Override
+    public void run(Server server, ScoreManager scoreManager, String gameType) {
+        new Thread(() -> {
+            for (var match : matchOrder) {
+                final CompletableFuture<Void> finished = new CompletableFuture<>();
+
+                AtomicReference<OnlineGame<TurnBasedGame>> game = new AtomicReference<>();
+                new Thread(() -> game.set(server.startGame(gameType, finished, match.getLeft(), match.getRight()))).start(); // TODO can possibly create a race condition
+
+                finished.join();
+                switch (game.get().game().getWinner()) {
+                    case 0 -> scoreManager.addScore(match.getLeft());
+                    case 1 -> scoreManager.addScore(match.getRight());
+                    default -> {}
+                }
+
+                match.getLeft().clearGame();
+                match.getRight().clearGame();
+            }
+
+            server.endTournament(scoreManager.getScore(), gameType);
+        }).start();
+    }
+
+    @Override
+    public void shuffle(Shuffler shuffler) {
+        shuffler.shuffle(matchOrder);
+    }
+}

framework/src/main/java/org/toop/framework/networking/server/tournaments/BasicScoreManager.java

@@ -0,0 +1,30 @@
+package org.toop.framework.networking.server.tournaments;
+
+import org.toop.framework.networking.server.client.NettyClient;
+
+import java.util.Map;
+
+public class BasicScoreManager implements ScoreManager {
+
+    private final Map<NettyClient, Integer> scores;
+
+    public BasicScoreManager(Map<NettyClient, Integer> store) {
+        scores = store;
+    }
+
+    @Override
+    public void addClient(NettyClient client) {
+        scores.putIfAbsent(client, getInitScore());
+    }
+
+    @Override
+    public void addScore(NettyClient client) {
+        int clientScore = scores.get(client);
+        scores.put(client, clientScore + getWinPointAmount());
+    }
+
+    @Override
+    public Map<NettyClient, Integer> getScore() {
+        return scores;
+    }
+}

framework/src/main/java/org/toop/framework/networking/server/tournaments/BasicTournament.java

@@ -1,127 +1,48 @@
 package org.toop.framework.networking.server.tournaments;
 
-import org.toop.framework.gameFramework.model.game.TurnBasedGame;
-import org.toop.framework.networking.server.OnlineGame;
 import org.toop.framework.networking.server.Server;
-import org.toop.framework.networking.server.client.NettyClient;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Random;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.atomic.AtomicReference;
 
 public class BasicTournament implements Tournament {
-    private final int POINTS_FOR_WIN = 1;
-
     private Server server;
-    private String gameType;
-    private ArrayList<TournamentMatch> matchList = new ArrayList<>();
 
-    private final HashMap<NettyClient, List<NettyClient>> matches = new HashMap<>();
-    private final HashMap<NettyClient, Integer> score = new HashMap<>();
-    private NettyClient[] clients;
+    private ScoreManager scoreManager;
+    private MatchManager matchManager;
 
-    public BasicTournament(Server server) {
-        this.server = server;
+    public BasicTournament() {}
+
+    public void init(TournamentBuilder builder) {
+        server = builder.server;
+        scoreManager = builder.scoreManager;
+        matchManager = builder.matchManager;
     }
 
     @Override
-    public void init(NettyClient[] clients) {
-//        if (this.clients == null || clients.length < 1) return;
-
-        for (NettyClient client : clients) {
-            int INIT_SCORE = 0;
-
-            matches.putIfAbsent(client, new ArrayList<>());
-            score.putIfAbsent(client, INIT_SCORE);
-        }
-
-        for (var match : matches.entrySet()) {
-            for (var matchNoSelf : matches.keySet()) {
-                if (match.getKey() == matchNoSelf) continue;
-
-                match.getValue().addLast(matchNoSelf);
-            }
-        }
-
-        for (var client : matches.entrySet()) {
-            for (var opponent : client.getValue()) {
-                matchList.addLast(new TournamentMatch(client.getKey(), opponent));
-            }
-        }
-
-        shuffle();
-    }
-
-    public void shuffle() { // TODO make shuffle own class so user can use different shuffles
-
-        final int SHUFFLE_AMOUNT = matchList.size() * 2;
-
-        Random rand = new Random();
-
-        for (int i = 0; i <= SHUFFLE_AMOUNT; i++) {
-            int index = rand.nextInt(matchList.size());
-            TournamentMatch match = matchList.get(index);
-            matchList.remove(index);
-            matchList.addLast(match);
-        }
-    }
-
-    public void addScorePoints(NettyClient client) {
-        score.put(client, score.get(client) + POINTS_FOR_WIN);
-    }
-
-    @Override
-    public boolean start(String gameType) { // TODO, rename to run
-//        if (this.clients == null || clients.length < 1) return false;
-
+    public boolean run(String gameType) throws RuntimeException {
         if (server.gameTypes().stream().noneMatch(e -> e.equalsIgnoreCase(gameType))) return false;
-        this.gameType = gameType;
 
-        new Thread(() -> {
-            for (var match : matchList) {
-                final CompletableFuture<Void> finished = new CompletableFuture<>();
-
-                AtomicReference<OnlineGame<TurnBasedGame>> game = new AtomicReference<>();
-                new Thread(() -> game.set(server.startGame(gameType, finished, match.getLeft(), match.getRight()))).start(); // TODO can possibly create a race condition
-
-                finished.join();
-                switch (game.get().game().getWinner()) {
-                    case 0 -> addScorePoints(match.getLeft());
-                    case 1 -> addScorePoints(match.getRight());
-                    default -> {}
-                }
-
-                match.getLeft().clearGame();
-                match.getRight().clearGame();
-            }
-
-            server.endTournament(end());
-        }).start();
+        matchManager.run(server, scoreManager, gameType);
 
         return true;
     }
 
-    @Override
-    public HashMap<NettyClient, Integer> end() {
-
-        for (var match : matchList) {
-            match.getLeft().clearGame(); // TODO send msg to client
-            match.getRight().clearGame(); // TODO send msg to client
-        }
-
-        gameType = null;
-        matchList = null;
-        matches.clear();
-
-        HashMap<NettyClient, Integer> retScore = new HashMap<>(score);
-
-        score.clear();
-
-        clients = null;
-
-        return retScore;
-    }
+//    @Override
+//    public HashMap<NettyClient, Integer> end() {
+//
+//        for (var match : matchList) {
+//            match.getLeft().clearGame(); // TODO send msg to client
+//            match.getRight().clearGame(); // TODO send msg to client
+//        }
+//
+//        gameType = null;
+//        matchList = null;
+//        matches.clear();
+//
+//        HashMap<NettyClient, Integer> retScore = new HashMap<>(score);
+//
+//        score.clear();
+//
+//        clients = null;
+//
+//        return retScore;
+//    }
 }

framework/src/main/java/org/toop/framework/networking/server/tournaments/MatchManager.java

@@ -0,0 +1,15 @@
+package org.toop.framework.networking.server.tournaments;
+
+import org.toop.framework.networking.server.Server;
+import org.toop.framework.networking.server.client.NettyClient;
+
+import java.util.List;
+
+public interface MatchManager {
+    void addClient(NettyClient client);
+    List<NettyClient> getClients();
+    void createMatches();
+    TournamentMatch next();
+    void run(Server server, ScoreManager scoreManager, String gameType);
+    void shuffle(Shuffler shuffler);
+}

framework/src/main/java/org/toop/framework/networking/server/tournaments/RandomShuffle.java

@@ -0,0 +1,20 @@
+package org.toop.framework.networking.server.tournaments;
+
+import java.util.List;
+import java.util.Random;
+
+public class RandomShuffle implements Shuffler {
+    @Override
+    public <T> void shuffle(List<T> listToShuffle) {
+        final int SHUFFLE_AMOUNT = listToShuffle.size() * 2;
+
+        Random rand = new Random();
+
+        for (int i = 0; i <= SHUFFLE_AMOUNT; i++) {
+            int index = rand.nextInt(listToShuffle.size());
+            T match = listToShuffle.get(index);
+            listToShuffle.remove(index);
+            listToShuffle.addLast(match);
+        }
+    }
+}

framework/src/main/java/org/toop/framework/networking/server/tournaments/ScoreManager.java

@@ -0,0 +1,19 @@
+package org.toop.framework.networking.server.tournaments;
+
+import org.toop.framework.networking.server.client.NettyClient;
+
+import java.util.Map;
+
+public interface ScoreManager {
+    void addClient(NettyClient client);
+    void addScore(NettyClient client);
+    Map<NettyClient, Integer> getScore();
+
+    default int getWinPointAmount() {
+        return 1;
+    }
+
+    default int getInitScore() {
+        return 0;
+    }
+}

framework/src/main/java/org/toop/framework/networking/server/tournaments/Shuffler.java

@@ -0,0 +1,7 @@
+package org.toop.framework.networking.server.tournaments;
+
+import java.util.List;
+
+public interface Shuffler {
+    <T> void shuffle(List<T> listToShuffle);
+}

framework/src/main/java/org/toop/framework/networking/server/tournaments/Tournament.java

@@ -5,7 +5,7 @@ import org.toop.framework.networking.server.client.NettyClient;
 import java.util.HashMap;
 
 public interface Tournament {
-    void init(NettyClient[] clients);
-    boolean start(String gameType);
-    HashMap<NettyClient, Integer> end();
+    void init(TournamentBuilder builder);
+    boolean run(String gameType);
+//    HashMap<NettyClient, Integer> end();
 }

framework/src/main/java/org/toop/framework/networking/server/tournaments/TournamentBuilder.java

@@ -0,0 +1,39 @@
+package org.toop.framework.networking.server.tournaments;
+
+import org.toop.framework.networking.server.Server;
+import org.toop.framework.networking.server.client.NettyClient;
+
+import java.util.List;
+
+public class TournamentBuilder {
+    public Server server;
+    public ScoreManager scoreManager;
+    public MatchManager matchManager;
+
+    public TournamentBuilder() {}
+
+    public Tournament create(
+            Tournament tournament,
+            List<NettyClient> clients,
+            Server server,
+            ScoreManager scoreManager,
+            MatchManager matchManager,
+            Shuffler shuffler
+    ) {
+
+        this.server = server;
+        this.scoreManager = scoreManager;
+        this.matchManager = matchManager;
+
+        for (var client : clients) {
+            matchManager.addClient(client);
+            scoreManager.addClient(client);
+        }
+
+        matchManager.createMatches();
+        matchManager.shuffle(shuffler);
+
+        tournament.init(this);
+        return tournament;
+    }
+}