From 5401ead19815b406bcaeb3b6a053f92be162bda3 Mon Sep 17 00:00:00 2001
From: Mathis Ginkel <m.ginkel@stud.unibas.ch>
Date: Sun, 15 Mar 2026 22:31:10 +0100
Subject: [PATCH 1/3] add: Network Protocol docs

---
 .../Network-Protocol-Documentation.md         | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 documents/docs/networking/Network-Protocol-Documentation.md

diff --git a/documents/docs/networking/Network-Protocol-Documentation.md b/documents/docs/networking/Network-Protocol-Documentation.md
new file mode 100644
index 0000000..7099c7e
--- /dev/null
+++ b/documents/docs/networking/Network-Protocol-Documentation.md
@@ -0,0 +1,63 @@
+This Document states the Network-Protocol as it is currently implemented 
+
+## GET_MESSAGE_COUNT
+This Command gets the number of messages, currently stored in the queue for the specific client.
+(Is used together with GET_NEXT_MESSAGE, to get all messages that are currently in the queue)
+
+Example:
+
+```
+GET_MESSAGE_COUNT
+
+1
++OK
+```
+
+## GET_NEXT_MESSAGE
+This Command gets the next Message that is being stored in the queue for the client.
+(Command is being sent the amount of times, the GET_MESSAGE_COUNT Command returns)
+
+Example:
+
+```
+GET_NEXT_MESSAGE
+
+TYPE=LOBBY GAME=1 USER=player1 TARGET=null TIME=9:30 TEXT="Guten Tag"
++OK
+```
+
+## SEND_MESSAGE
+This Command gets sent if the user of that client writes a message to one of the three possible chats
+
+(The Arguments / Parameters of the Command describe all the parameters of the Object "Message" being used internally by both the Client and the Server)
+
+Example:
+```
+SEND_MESSAGE TYPE=LOBBY GAME=1 USER=player1 TARGET=null TIME=10:30 TEXT="Hallo Welt"
+
++OK
+```
+
+## LOG_IN
+This Command is used to create a user on the server and associate that user with a username
+Server returns the username, slightly changed if it is already used by someone else, and an ID to identify the client.
+
+Example:
+
+```
+LOG_IN USERNAME="Peter"
+
+USERNAME="Peter" ID=<random UUID>
++OK
+```
+
+## LOG_OUT
+This Command is used to quit the connection between client and server.
+
+Example:
+
+```
+LOG_OUT
+
++OK
+```

From cc33411911db3c10f5ce159f7c51b286f1a8179c Mon Sep 17 00:00:00 2001
From: Mathis Ginkel <m.ginkel@stud.unibas.ch>
Date: Thu, 2 Apr 2026 10:20:03 +0200
Subject: [PATCH 2/3] Add: basic chat functionality

---
 .../casono/client/chat/ChatController.java    |  62 ++++++
 .../cs108/casono/client/chat/ChatModel.java   |  67 ++++++
 .../cs108/casono/client/chat/Message.java     | 136 ++++++++++++
 .../casono/client/network/ClientService.java  | 210 ++++++++++++++++++
 .../client/ui/chatui/ChatController.java      |  85 -------
 .../client/ui/chatui/ChatViewController.java  |  87 ++++++++
 .../gameuicomponents/chatui/chatbox.fxml      |  58 +++++
 .../gameuicomponents/chatui/chatui.css        | 155 +++++++++++++
 .../client/chat/ChatControllerTest.java       |  28 +++
 9 files changed, 803 insertions(+), 85 deletions(-)
 create mode 100644 src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatController.java
 create mode 100644 src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatModel.java
 create mode 100644 src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/Message.java
 create mode 100644 src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ClientService.java
 delete mode 100644 src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatController.java
 create mode 100644 src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatViewController.java
 create mode 100644 src/main/resources/ui-structure/gameuicomponents/chatui/chatbox.fxml
 create mode 100644 src/main/resources/ui-structure/gameuicomponents/chatui/chatui.css
 create mode 100644 src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatControllerTest.java

diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatController.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatController.java
new file mode 100644
index 0000000..ac2bb0e
--- /dev/null
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatController.java
@@ -0,0 +1,62 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.chat;
+
+import ch.unibas.dmi.dbis.cs108.casono.client.network.ClientService;
+import java.util.List;
+
+/**
+ * responsible for the transferring of messages from the server to the ChatModel
+ * or from the ChatViewController to the server
+ */
+public class ChatController {
+
+    private final String username;
+    private final ClientService clientService;
+
+    private ChatModel chatModel;
+
+    private int game_id;
+
+    public ChatController(String username, ClientService clientService) {
+        this.username = username;
+        this.clientService = clientService;
+    }
+
+    public void createChat(int game_id) {
+        chatModel = new ChatModel(ChatModel.ChatType.GLOBAL, username);
+        this.game_id = game_id;
+    }
+
+    public ChatModel getChatModel() {
+        return chatModel;
+    }
+
+    /**
+     * method to send a message, the ChatViewController received to the server
+     */
+    public void sendMessage(String msg, String username) {
+        Message message = new Message(Message.MessageType.GLOBAL, 0, username, null, msg);
+        onSendToNetwork(message);
+    }
+
+    /**
+     * method to get all messages from the server
+     */
+    public Boolean receiveMessage() {
+        List<Message> newMessages = clientService.getMessages();
+        if (!newMessages.isEmpty()) {
+            for (Message msg : newMessages) {
+                chatModel.addMessage(msg);
+            }
+            return true;
+        } else { return false; }
+    }
+
+    /**
+     * method to send a message to the server
+     * @param message
+     */
+    public void onSendToNetwork(Message message) {
+        clientService.sendMessage(message);
+    }
+
+}
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatModel.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatModel.java
new file mode 100644
index 0000000..0c2f075
--- /dev/null
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatModel.java
@@ -0,0 +1,67 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.chat;
+
+import java.util.ArrayList;
+
+/**
+ * ChatModel, stores the data for a specific chat
+ *
+ * Holds the current state of a chat
+ */
+
+public class ChatModel {
+
+    public ArrayList<Message> messages;
+
+    public ChatType chattype;
+
+    public String username;
+
+    public int count;
+
+    public enum ChatType {
+        GLOBAL,
+        LOBBY,
+        WHISPER
+    }
+
+    /**
+     * Creates a new ChatModel, given a username of the client
+     * @param chattype
+     * @param username
+     */
+
+    public ChatModel(ChatType chattype, String username) {
+        this.messages = new ArrayList<Message>();
+        this.chattype = chattype;
+        this.username = username;
+        this.count = 0;
+    }
+
+    /**
+     * method, used by the ChatViewController, to access all new messages, that are stored in the ChatModel
+     */
+    public synchronized String viewNextMessage() {
+        count--;
+        Message msg = messages.getLast();
+        return String.format("[%s] %s: %s", msg.timestamp, msg.user, msg.getMessage());
+    }
+
+    /**
+     * Adds a new message
+     * method used by the ChatController
+     * @param msg
+     */
+    public synchronized void addMessage(Message msg) {
+        messages.add(msg);
+        count++;
+    }
+
+    /**
+     * method to send all current messages to the ChatViewController, if needed
+     */
+    public void addCompleteChat() {
+        for (int i = 0; i < this.messages.size(); i++) {
+            Message msg = this.messages.get(i);
+        }
+    }
+}
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/Message.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/Message.java
new file mode 100644
index 0000000..8fb2b0e
--- /dev/null
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/Message.java
@@ -0,0 +1,136 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.chat;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Message Object for internal handling of Chat-Messages
+ * TODO: Should be used on both sides of the network
+ */
+
+public class Message {
+    private final MessageType type;
+    private final String message;
+    public String user;
+    public String timestamp;
+    public int game_id = 0;
+    public String target = null;
+    public enum MessageType {
+        GLOBAL, LOBBY, WHISPER
+    };
+
+    /**
+     * Constructor for creating Messages with all information given
+     * @param type - Either global, local or whisper
+     * @param game_id - lobby id, or null, if the type is global
+     * @param user - username
+     * @param target - username of the target user, for whisper chat
+     * @param message
+     */
+
+    public Message(MessageType type, int game_id, String user, String target, String timestamp, String message) {
+        this.type = type;
+        this.game_id = game_id;
+        this.user = user;
+        this.target = target;
+        this.timestamp = timestamp;
+        this.message = message;
+    }
+
+    /**
+     * Constructor for creating the Messages of the current user, using this client -> time of writing is being recorded
+     * @param type - Either global, local or whisper
+     * @param game_id - lobby id, or null, if the type is global
+     * @param user - username
+     * @param target - username of the target user, for whisper chat
+     * @param message
+     */
+
+    public Message(MessageType type, int game_id, String user, String target, String message) {
+        this.type = type;
+        this.game_id = game_id;
+        this.user = user;
+        this.target = target;
+        this.message = message;
+        LocalDateTime now = LocalDateTime.now();
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm");
+        this.timestamp = now.format(formatter);
+    }
+
+
+    public String getMessage() {
+        return message;
+    }
+
+    public MessageType getMessageType() {
+        return type;
+    }
+
+    /*
+     * Method to test the system
+     * @return - String representation of the Message instance, as for example "player1: Hello World"
+
+    public String toString() {
+        return String.format("%s: %s", this.user, this.message);
+    }
+    */
+    /**
+     * Method to create the request representation of the message object, to be sent to the server
+     * @return - request as specified in the network protocol, as String
+     */
+    public String toArgsString() {
+        return String.format("TYPE=%s GAME=%d USER=%s TARGET=%s TIME=%s TEXT=%s",
+                this.type.toString(), this.game_id, this.user, this.target, this.timestamp, this.message);
+    }
+
+
+    /**
+     * Pattern, to analyze the response String with the given parameters
+     */
+    public static Pattern msgRex = Pattern.compile(
+            "TYPE=(?<type>\\w+) GAME=(?<game>\\w+) USER=(?<user>\\w+) TARGET=(?<target>\\w+) TIME=(?<time>[0-9:.]+) TEXT=(?<text>.*)$");
+
+    /**
+     * Method to create a Message Object, from the information given by the String
+     * @param response - String that got sent as a response from the server
+     * @return - New Message Object
+     */
+    public static Message toMessage(String response) {
+        Matcher m = msgRex.matcher(response);
+        if (! m.matches()) {
+            throw new RuntimeException("Can not parse message: '" + response+"'");
+        }
+        String typeString=m.group("type");
+
+        switch (typeString) {
+            case "GLOBAL":
+                return new Message(MessageType.GLOBAL,
+                        0,
+                        m.group("user"),
+                        null,
+                        m.group("time"),
+                        m.group("text"));
+
+            case "LOBBY":
+                return new Message(MessageType.LOBBY,
+                        Integer.parseInt(m.group("game")),
+                        m.group("user"),
+                        null,
+                        m.group("time"),
+                        m.group("text"));
+
+            case "WHISPER":
+                return new Message(MessageType.WHISPER,
+                        Integer.parseInt(m.group("game")),
+                        m.group("user"),
+                        m.group("target"),
+                        m.group("time"),
+                        m.group("text"));
+
+            default:
+                throw new RuntimeException("Unknown message type " + typeString);
+        }
+    }
+}
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ClientService.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ClientService.java
new file mode 100644
index 0000000..b7dab20
--- /dev/null
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ClientService.java
@@ -0,0 +1,210 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.network;
+
+
+import ch.unibas.dmi.dbis.cs108.casono.server.network.NetworkManager;
+import ch.unibas.dmi.dbis.cs108.casono.server.network.transport.RawPacket;
+import ch.unibas.dmi.dbis.cs108.casono.server.network.transport.TcpTransport;
+import java.net.Socket;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+
+import java.io.IOException;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicReference;
+
+import ch.unibas.dmi.dbis.cs108.casono.client.chat.Message;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+
+/**
+ * Responsible for the transferring of the data from the Client to the Server and the other way around
+ */
+
+public class ClientService {
+
+    private final TcpTransport clienttcptransport;
+    private final Socket socket;
+
+    private final String ip;
+    private final int port;
+
+    private final ExecutorService executor;
+
+    public static ArrayList<String> response;
+    private final AtomicInteger idGenerator;
+    private final Logger logger;
+
+    /**
+     * Creates a new ClientSession with a Socket, a Reader and Writer of the Input- and the Outputstream and a pool of threads to send requests and receive responses.
+     * @param ip : ip-adress of the server
+     * @param port : port of the server
+     */
+
+    public ClientService(String ip, int port) {
+
+        this.ip = ip;
+        this.port = port;
+        this.idGenerator = new AtomicInteger(0);
+        this.logger = LogManager.getLogger(NetworkManager.class);
+
+        try {
+            socket = new Socket(this.ip, this.port);
+            logger.info("Connected at port " + this.port);
+            clienttcptransport = new TcpTransport(socket);
+        }
+        catch (IOException i) {
+            throw new RuntimeException(i);
+        }
+
+        executor = Executors.newSingleThreadExecutor();
+    }
+
+    /**
+     * Sends a ping to the server
+     * Returns nothing, the method processMessage() already handles the cases "+OK" or "-ERROR"
+     */
+
+    public void ping() {
+        processMessage("PING");
+    }
+
+    /**
+     * Sends a login request to the server to create a new user on the server
+     * @param username
+     * @return - a new username, if the same username is already used by someone else
+     */
+
+    public String login(String username) {
+        String msg = "LOGIN USERNAME=" + username;
+        return processMessage(msg);
+    }
+
+    /**
+     * Send a Request to get the number of Messages currently in the Queue for the client.
+     * Then proceeds, if needed, to get the messages by sending
+     */
+
+    public List<Message> getMessages() {
+        String countStr = processMessage("GET_MESSAGE_COUNT");
+        int count = Integer.parseInt(countStr);
+        System.out.println("Got " + count + " messages");
+        List<Message> messages = new ArrayList<>();
+        for (int i = 0; i < count; i++) {
+            String  message = processMessage("GET_NEXT_MESSAGE");
+            if (message != null) {
+                Message message1 = Message.toMessage(message);
+                messages.add(message1);
+            }
+        }
+        return messages;
+    }
+
+    /**
+     * Sends a Request to the Server containing all relevant information of the message the client wrote.
+     * @param message
+     * @return
+     */
+
+    public void sendMessage(Message message) {
+        String request = "SEND_MESSAGE " + message.toArgsString();
+        processMessage(request);
+    }
+
+    /**
+     * Sends the Requests to the server and waits for the response
+     * If the response is "+OK" it proceeds normal
+     * If the response "-ERROR" it throws a runtime exception
+     * @param message
+     * @return - The response as a string, if it has to be returned
+     * (+OK will not be returned)
+     */
+
+    private String processMessage(String message) {
+        AtomicReference<String> response = new AtomicReference<>();
+        sendRequest(() -> {
+            try {
+                writeToTransport(message);
+                String responseLine=null;
+                do {
+                    responseLine = clienttcptransport.read().payload();
+                    System.out.println("Raw message '" + responseLine + "'");
+                    if ("+OK".equals(responseLine)) {
+                        return;
+                    } else if (("-ERROR").equals(responseLine)) {
+                        throw new RuntimeException(responseLine);
+                    }
+                    response.set(responseLine);
+                } while(true);
+            } catch (Exception e) {
+                throw getRuntimeException(e);
+            }
+        });
+        return response.get();
+    }
+
+    /**
+     *
+     * @param request
+     */
+
+    private void sendRequest(Runnable request) {
+        Future<?> future = executor.submit(request);
+        try {
+            future.get();
+        } catch (InterruptedException e) {
+            throw new RuntimeException(e);
+        } catch (ExecutionException e) {
+            throw getRuntimeException(e);
+        }
+    }
+
+    /**
+     * Returns a Runtime Exceptions thrown by the sendRequest method
+     * @param e - an Exception
+     * @return - a Runtime Exception
+     */
+
+    private static RuntimeException getRuntimeException(Exception e) {
+        Throwable reason = e.getCause();
+        RuntimeException re;
+        if (reason == null) {
+            reason = e;
+        } else if (reason instanceof RuntimeException rte) {
+            re = rte;
+        }
+        re = new RuntimeException(reason);
+        return re;
+    }
+
+    /**
+     * Closes the Socket and shuts down the Threadpool associated with that Socket-Connection.
+     */
+
+    public void closeSocket() {
+        try {
+            executor.shutdown();
+            clienttcptransport.close();
+            socket.close();
+        } catch (IOException j) {
+            System.out.println(j);
+        }
+
+    }
+
+    /**
+     * Method to write with the tcp transport to the server
+     * @param s - Message to be sent
+     * @throws IOException
+     */
+
+    private void writeToTransport(String s) throws IOException {
+        int id = this.idGenerator.incrementAndGet();
+        this.clienttcptransport.write(new RawPacket(id, s));
+    }
+
+}
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatController.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatController.java
deleted file mode 100644
index b6b273f..0000000
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatController.java
+++ /dev/null
@@ -1,85 +0,0 @@
-package ch.unibas.dmi.dbis.cs108.casono.client.ui.chatui;
-
-import java.time.LocalTime;
-import java.time.format.DateTimeFormatter;
-import javafx.fxml.FXML;
-import javafx.scene.control.Button;
-import javafx.scene.control.Label;
-import javafx.scene.control.ScrollPane;
-import javafx.scene.control.TextField;
-import javafx.scene.layout.VBox;
-
-/**
- * Controller-Klasse für das Chat-System innerhalb der Spieloberfläche.
- *
- * <p>Verwaltet das Anzeigen von Chatnachrichten, das Eingabefeld für eigene Nachrichten sowie den
- * Senden-Button. Unterstützt drei Arten von Nachrichten: - Player-to-Player (Privat) - Lobby-Chat
- * (Raum) - Globaler Chat (Serverweit)
- *
- * <p>Nachrichten werden in einem {@link VBox}-Container als {@link Label} angezeigt. Eigene
- * Nachrichten werden über {@link #onSendToNetwork(String)} an das Netzwerkprotokoll weitergeleitet,
- * während eingehende Nachrichten über {@link #receiveMessage(String, String)} verarbeitet und
- * angezeigt werden.
- *
- * <p>Hinweis: Einige TODOs stehen in der zugehörigen FXML-Datei
- */
-public class ChatController {
-
-    @FXML private VBox chatVBox;
-
-    @FXML private TextField inputField;
-
-    @FXML private Button sendButton;
-
-    @FXML private ScrollPane chatScrollPane;
-
-    private static final int CHAT_PADDING = 20;
-
-    /** Initialisiert den ChatController nach dem Laden der FXML. */
-    public void initialize() {
-        inputField.setOnAction(event -> sendMessage());
-        chatScrollPane.vvalueProperty().bind(chatVBox.heightProperty());
-    }
-
-    /**
-     * Diese Methode wird vom Senden-Button oder Enter ausgelöst. Sie gibt die eigene Nachricht an
-     * das Netzwerkprotokoll weiter.
-     */
-    @FXML
-    private void sendMessage() {
-        String message = inputField.getText().trim();
-        if (!message.isEmpty()) {
-            inputField.clear();
-
-            // Hier wird die eigene Nachricht ans Netzwerkprotokoll übergeben
-            onSendToNetwork(message);
-        }
-    }
-
-    /**
-     * Diese Funktion muss vom Netzwerkprotokoll aufgerufen werden, wenn eine neue Nachricht von
-     * einem anderen Spieler kommt.
-     *
-     * @param player Name des Spielers
-     * @param message Nachricht des Spielers
-     */
-    public void receiveMessage(String player, String message) {
-        String time = LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm"));
-        Label label = new Label("[" + time + "] " + player + ": " + message);
-        label.getStyleClass().add("info-text");
-        label.setWrapText(true); // Zeilenumbruch aktivieren
-        label.maxWidthProperty().bind(chatVBox.widthProperty().subtract(CHAT_PADDING));
-        chatVBox.getChildren().add(label);
-    }
-
-    /**
-     * Schnittstelle zum Netzwerkprotokoll. Diese Funktion wird automatisch aufgerufen, wenn der
-     * Benutzer eine eigene Nachricht sendet.
-     *
-     * @param message Nachricht, die der Benutzer abgeschickt hat
-     */
-    public void onSendToNetwork(String message) {
-        // TODO: Netzwerkcode einfügen
-        receiveMessage("Du", message);
-    }
-}
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatViewController.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatViewController.java
new file mode 100644
index 0000000..607204d
--- /dev/null
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatViewController.java
@@ -0,0 +1,87 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.ui.chatui;
+
+import ch.unibas.dmi.dbis.cs108.casono.client.chat.ChatController;
+import ch.unibas.dmi.dbis.cs108.casono.client.chat.ChatModel;
+import javafx.fxml.FXML;
+import javafx.scene.control.Button;
+import javafx.scene.control.Label;
+import javafx.scene.control.ScrollPane;
+import javafx.scene.control.TextField;
+import javafx.scene.layout.VBox;
+
+import java.util.Timer;
+import java.util.TimerTask;
+
+/**
+ * Responsible for the presentation of the ChatModel to the Client
+ */
+
+public class ChatViewController {
+
+    private final ChatModel chatmodel;
+    private final String username;
+    private final ChatController controller;
+    private final Timer timer;
+
+    @FXML private VBox chatVBox;
+
+    @FXML private TextField inputField;
+
+    @FXML private ScrollPane chatScrollPane;
+
+    @FXML private Button sendButton;
+
+    @FXML private Button refreshButton;
+
+    private static final int CHAT_PADDING = 20;
+
+    public ChatViewController() {
+        this(null, null ,null);
+    }
+
+    public ChatViewController(String username, ChatModel chatmodel, ChatController controller) {
+        this.username = username;
+        this.chatmodel = chatmodel;
+        this.controller = controller;
+        this.timer = new Timer();
+        timer.schedule(new TimerTask() {
+            @Override
+            public void run() {
+                System.err.println("tick");
+                if (controller.receiveMessage()) {
+                    showMessage();
+                }
+            }
+        }, 0, 1000);
+    }
+
+    @FXML
+    public void initialize() {
+        inputField.setOnAction(event -> sendMessage());
+        sendButton.setOnAction(event -> sendMessage());
+        refreshButton.setOnAction(event -> showMessage());
+        chatScrollPane.vvalueProperty().bind(chatVBox.heightProperty());
+    }
+
+    public void showMessage() {
+        while (chatmodel.count > 0) {
+            String msg = chatmodel.viewNextMessage();
+            Label label = new Label(msg);
+            label.getStyleClass().add("info-text");
+            label.setWrapText(true);
+            label.maxWidthProperty().bind(chatVBox.widthProperty().subtract(CHAT_PADDING));
+            chatVBox.getChildren().add(label);
+        }
+
+    }
+
+    public void sendMessage() {
+        String message = inputField.getText().trim();
+        if (!message.isEmpty()) {
+            inputField.clear();
+            this.controller.sendMessage(message, username);
+        }
+    }
+
+    public void endController() { timer.cancel(); }
+}
diff --git a/src/main/resources/ui-structure/gameuicomponents/chatui/chatbox.fxml b/src/main/resources/ui-structure/gameuicomponents/chatui/chatbox.fxml
new file mode 100644
index 0000000..fd1cc59
--- /dev/null
+++ b/src/main/resources/ui-structure/gameuicomponents/chatui/chatbox.fxml
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+
+<!--
+    Dieses Fenster wird später mit den Serveranfragen verknüpft,
+    um Nachrichten von Mitspielern und Systemmeldungen in Echtzeit anzuzeigen.
+
+    Der Chat unterscheidet intern zwischen:
+    - Player-to-Player (Privater 2-Personen-Chat)
+    - Lobby-Chat (Aktueller Raum)
+    - Globaler Chat (Gesamter Server)
+
+    Features, die später implementiert werden sollen:
+    - Schicke Chat-Bubbles mit Namen und Uhrzeit.
+-->
+
+<VBox xmlns="http://javafx.com/javafx/21"
+      xmlns:fx="http://javafx.com/fxml/1"
+      fx:controller="ch.unibas.dmi.dbis.cs108.casono.client.ui.chatui.ChatViewController"
+      alignment="CENTER"
+      stylesheets="@chatui.css">
+
+    <!-- Innenabstand: Schafft oben, rechts und unten 30 Pixel Platz, links nur 10 Pixel (asymmetrisch) -->
+    <padding>
+        <Insets top="30" right="30" bottom="30" left="10"/>
+    </padding>
+
+    <children>
+        <VBox VBox.vgrow="ALWAYS"
+              styleClass="chat-box"
+              spacing="10"
+              maxWidth="Infinity">
+
+            <children>
+                <Label text="== CHAT ==" styleClass="chat-header" alignment="CENTER" maxWidth="Infinity"/>
+                <Region minHeight="4" styleClass="chat-separator"/>
+
+                <!-- Chatnachrichten werden hier hinzugefügt -->
+                <ScrollPane fx:id="chatScrollPane" fitToWidth="true" vbarPolicy="AS_NEEDED" hbarPolicy="NEVER" VBox.vgrow="ALWAYS" styleClass="chat-scroll-pane">
+                    <content>
+                        <VBox fx:id="chatVBox" spacing="10" styleClass="chat-VBox"/>
+                    </content>
+                </ScrollPane>
+
+                <!-- Eingabebereich -->
+                <HBox spacing="10">
+                    <!-- TODO: Größe des TextFields dynamisch anpassen -->
+                    <TextField fx:id="inputField" HBox.hgrow="ALWAYS" promptText="Nachricht eingeben..." styleClass="gray-input-field" onAction="#sendMessage"/>
+                    <Button fx:id="sendButton" text="SENDEN" onAction="#sendMessage" styleClass="yellow-button"/>
+                    <Button fx:id="refreshButton" text="NEU" onAction="#showMessage" styleClass="yellow-button"/>
+                </HBox>
+            </children>
+        </VBox>
+    </children>
+</VBox>
\ No newline at end of file
diff --git a/src/main/resources/ui-structure/gameuicomponents/chatui/chatui.css b/src/main/resources/ui-structure/gameuicomponents/chatui/chatui.css
new file mode 100644
index 0000000..826aa7b
--- /dev/null
+++ b/src/main/resources/ui-structure/gameuicomponents/chatui/chatui.css
@@ -0,0 +1,155 @@
+.chat-box {
+    -fx-background-color: #0d9e3b;
+    -fx-background-radius: 58;
+    -fx-border-radius: 50;
+    -fx-border-color: #5c3d10 #3d260a #3d260a #5c3d10;
+    -fx-border-width: 12;
+    -fx-padding: 20;
+    -fx-effect: dropshadow(one-pass-box, rgba(0,0,0,1), 0, 0, 15, 15);
+}
+
+.chat-header {
+    -fx-text-fill: #ffffff;
+    -fx-font-size: 22px;
+    -fx-font-weight: bold;
+    -fx-padding: 0 0 10 0;
+    -fx-effect: dropshadow(one-pass-box, #000000, 0, 0, 3, 3);
+}
+
+.chat-separator {
+    -fx-background-color: #ffffff;
+    -fx-min-height: 4px;
+    -fx-effect: dropshadow(one-pass-box, #000000, 0, 0, 3, 3);
+}
+
+.black-input-field {
+    -fx-background-color: #1a1a1a;
+    -fx-text-fill: #ffffff;
+    -fx-font-family: "Courier New";
+    -fx-font-weight: bold;
+    -fx-background-radius: 8;
+    -fx-border-radius: 8;
+    -fx-border-color: #444444;
+    -fx-border-width: 2;
+    -fx-padding: 5 12;
+}
+
+.black-input-field:hover {
+    -fx-translate-y: -3;
+    -fx-effect: dropshadow(one-pass-box, rgba(0, 0, 0, 0.8), 0, 0, 3, 3);
+}
+
+
+.black-input-field:focused {
+    -fx-border-color: #ffffff;
+    -fx-background-color: #000000;
+}
+
+.gray-input-field {
+    -fx-background-color: #333333;
+    -fx-text-fill: #ffffff;
+    -fx-font-family: "Courier New";
+    -fx-font-weight: bold;
+    -fx-background-radius: 8;
+    -fx-border-radius: 8;
+    -fx-border-color: #666666;
+    -fx-color-color: #cccccc;
+    -fx-border-width: 2;
+    -fx-padding: 5 12;
+}
+
+.gray-input-field:hover {
+    -fx-translate-y: -3;
+    -fx-effect: dropshadow(one-pass-box, rgba(0, 0, 0, 0.8), 0, 0, 3, 3);
+}
+
+.gray-input-field:focused {
+    -fx-border-color: #ffffff;
+    -fx-background-color: #333333;
+}
+
+.yellow-button {
+    -fx-background-color: #b8860b;
+    -fx-border-color: #ffd700;
+    -fx-text-fill: #ffffff;
+}
+
+.red-button {
+    -fx-background-color: #8b0000;
+    -fx-border-color: #ff4444;
+    -fx-text-fill: #ffffff;
+}
+
+.gray-button {
+    -fx-background-color: #333333;
+    -fx-border-color: #666666;
+    -fx-text-fill: #cccccc;
+}
+
+.gray-button, .yellow-button, .red-button {
+    -fx-background-radius: 12;
+    -fx-border-radius: 12;
+    -fx-font-family: "Courier New";
+    -fx-font-weight: bold;
+    -fx-border-width: 2;
+    -fx-padding: 6 15;
+    -fx-cursor: hand;
+}
+
+.gray-button:hover, .yellow-button:hover, .red-button:hover {
+    -fx-translate-y: -3;
+    -fx-effect: dropshadow(one-pass-box, rgba(0, 0, 0, 0.8), 0, 0, 3, 3);
+}
+
+.chat-scroll-pane {
+    -fx-background-color: transparent;
+    -fx-background: transparent;
+    -fx-border-color: transparent;
+}
+
+.chat-VBox {
+    -fx-background-color: transparent;
+    -fx-background: transparent;
+}
+.scroll-pane {
+    -fx-background-color: transparent;
+    -fx-border-color: transparent;
+}
+
+.scroll-pane .scroll-bar:vertical {
+    -fx-background-color: transparent;
+}
+
+.scroll-pane .scroll-bar .track {
+    -fx-background-color: #5c3d10;
+    -fx-background-insets: 0;
+    -fx-background-radius: 5;
+}
+
+.scroll-pane .scroll-bar .thumb {
+    -fx-background-color: #3d260a;
+    -fx-background-insets: 0;
+    -fx-background-radius: 5;
+    -fx-pref-width: 6;
+    -fx-pref-height: 6;
+    -fx-padding: 0;
+}
+
+.scroll-pane .scroll-bar:horizontal {
+    -fx-background-color: transparent;
+}
+
+.scroll-pane .scroll-bar:horizontal .track {
+    -fx-background-color: #5c3d10;
+    -fx-background-radius: 5;
+}
+
+.scroll-pane .scroll-bar:horizontal .thumb {
+    -fx-background-color: #3d260a;
+    -fx-background-radius: 5;
+    -fx-pref-height: 6;
+}
+
+.scroll-pane .scroll-bar:horizontal .thumb:hover {
+    -fx-pref-height: 10;
+}
diff --git a/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatControllerTest.java b/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatControllerTest.java
new file mode 100644
index 0000000..a18c5b7
--- /dev/null
+++ b/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatControllerTest.java
@@ -0,0 +1,28 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.chat;
+
+import ch.unibas.dmi.dbis.cs108.casono.client.network.ClientService;
+import ch.unibas.dmi.dbis.cs108.casono.client.ui.gameui.CasinoGameUI;
+import ch.unibas.dmi.dbis.cs108.casono.client.ui.lobbyui.Casinomainui;
+import ch.unibas.dmi.dbis.cs108.casono.server.ServerApp;
+import javafx.application.Application;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class ChatControllerTest {
+
+    @BeforeEach
+    public void setup() {
+    }
+
+    @AfterEach
+    public void teardown() {
+
+    }
+
+    @Test
+    public void testChatController() {
+        Client client = new Client("user1");
+        client.startApplication();
+    }
+}

From ff07843e0a82963b5fe7327c73e6d778dc0705f1 Mon Sep 17 00:00:00 2001
From: Mathis Ginkel <m.ginkel@stud.unibas.ch>
Date: Thu, 2 Apr 2026 10:22:51 +0200
Subject: [PATCH 3/3] Fix: small changes in ClientService

---
 .../cs108/casono/client/network/ClientService.java   | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ClientService.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ClientService.java
index b7dab20..c26163b 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ClientService.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ClientService.java
@@ -17,8 +17,6 @@ import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
 
 import ch.unibas.dmi.dbis.cs108.casono.client.chat.Message;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 
 
 /**
@@ -30,14 +28,10 @@ public class ClientService {
     private final TcpTransport clienttcptransport;
     private final Socket socket;
 
-    private final String ip;
-    private final int port;
-
     private final ExecutorService executor;
 
     public static ArrayList<String> response;
     private final AtomicInteger idGenerator;
-    private final Logger logger;
 
     /**
      * Creates a new ClientSession with a Socket, a Reader and Writer of the Input- and the Outputstream and a pool of threads to send requests and receive responses.
@@ -47,14 +41,10 @@ public class ClientService {
 
     public ClientService(String ip, int port) {
 
-        this.ip = ip;
-        this.port = port;
         this.idGenerator = new AtomicInteger(0);
-        this.logger = LogManager.getLogger(NetworkManager.class);
 
         try {
-            socket = new Socket(this.ip, this.port);
-            logger.info("Connected at port " + this.port);
+            socket = new Socket(ip, port);
             clienttcptransport = new TcpTransport(socket);
         }
         catch (IOException i) {