Feat: Accept ClientService and delegate to LobbyClient

Add constructor overload that accepts ClientService and constructs a LobbyClient.
Avoids implicit host/port lookup in UI code; caller controls network config.
Keeps rendering/status behavior unchanged (async updates, deterministic ordering).

src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/lobbyui/LobbyButtonGridManager.java

@@ -38,15 +38,9 @@ public class LobbyButtonGridManager {
     /** Manager for mapping ButtonID to LobbyID. */
     private final LobbyButtonTranslationManager translationManager;
 
-    /** Number of rows in the grid. */
-    private static final int ROWS = 2;
-
     /** Number of columns in the grid. */
     private static final int COLS = 4;
 
-    /** Path to the button image. */
-    private static final String BUTTON_IMAGE_PATH = "/images/logo.png";
-
     /** Image for a lobby in CREATED state. */
     /** Default fallback image. */
     private static final String BUTTON_FALLBACK_IMAGE = "/images/lobbypictures/error.png";
@@ -61,25 +55,17 @@ public class LobbyButtonGridManager {
     /** Cache for loaded Images keyed by resource path. */
     private final ConcurrentHashMap<String, Image> imageCache = new ConcurrentHashMap<>();
 
-    /** Max random lobby id. */
-    private static final int MAX_RANDOM_LOBBY_ID = 10000;
-
     private final LobbyClient lobbyClient;
 
+    /** Executor for background status/network tasks. */
+    private final ExecutorService executor = Executors.newCachedThreadPool();
+
     /**
      * Constructor for the GridManager.
      *
      * @param gridPane           the GridPane for rendering
      * @param translationManager the manager for mapping ButtonID to LobbyID
      */
-    public LobbyButtonGridManager(
-            GridPane gridPane, LobbyButtonTranslationManager translationManager) {
-        this(gridPane, translationManager, createDefaultLobbyClient());
-    }
-
-    /**
-     * Constructor that accepts a `LobbyClient` implementation.
-     */
     public LobbyButtonGridManager(
             GridPane gridPane, LobbyButtonTranslationManager translationManager, LobbyClient lobbyClient) {
         this.gridPane = gridPane;
@@ -88,17 +74,20 @@ public class LobbyButtonGridManager {
         this.lobbyClient = lobbyClient;
     }
 
-    private static LobbyClient createDefaultLobbyClient() {
+    /**
-        String host = System.getProperty("casono.server.host", "127.0.0.1");
+     * Convenience constructor: accept a {@link ClientService} and build a
-        int port = 1337;
+     * {@link LobbyClient} from it. This avoids any host/port System.getProperty
-        try {
+     * lookups elsewhere — caller controls the ClientService.
-            port = Integer.parseInt(System.getProperty("casono.server.port", "1337"));
+     */
-        } catch (NumberFormatException e) {
+    public LobbyButtonGridManager(
-            // use default port if parsing fails
+            GridPane gridPane, LobbyButtonTranslationManager translationManager, ClientService clientService) {
-        }
+        this(gridPane, translationManager, new LobbyClient(clientService));
-        return new LobbyClient(new ClientService(host, port));
     }
 
+    // Default client creation removed to avoid implicit IP/port configuration.
+    // Applications must construct and provide a LobbyClient or ClientService
+    // explicitly.
+
     /**
      * Renders all lobby buttons in the grid. Creates a button for each mapping with
      * image and event
@@ -106,10 +95,8 @@ public class LobbyButtonGridManager {
      */
     public void renderLobbyButtons() {
         gridPane.getChildren().clear();
-        int index = 0;
         Map<Integer, Integer> mapping = translationManager.getButtonIdToLobbyId();
         if (mapping.isEmpty()) {
-            // No buttons to render
             return;
         }
         List<Integer> buttonIds = new ArrayList<>(mapping.keySet());
@@ -122,39 +109,24 @@ public class LobbyButtonGridManager {
             // placeholder image so UI remains responsive
             Image placeholder = safeLoadImage(BUTTON_FALLBACK_IMAGE);
             ImageView imageView = new ImageView(placeholder);
-imageView.setPreserveRatio(true);
+            imageView.setPreserveRatio(true);
             imageView.fitWidthProperty().bind(gridPane.widthProperty().divide(COLS).subtract(BUTTON_WIDTH_MARGIN));
             imageView.setSmooth(true);
-btn.setGraphic(imageView);
+            btn.setGraphic(imageView);
             btn.setMaxWidth(Double.MAX_VALUE);
             btn.setMaxHeight(Double.MAX_VALUE);
             btn.setMinWidth(BUTTON_MIN_SIZE);
             btn.setMinHeight(BUTTON_MIN_SIZE);
             GridPane.setHgrow(btn, javafx.scene.layout.Priority.ALWAYS);
             GridPane.setVgrow(btn, javafx.scene.layout.Priority.ALWAYS);
-final int bId = buttonId;
+            final int bId = buttonId;
             btn.setOnAction(e -> {
-Integer targetLobbyId = translationManager.getLobbyIdForButton(bId);
+                Integer targetLobbyId = translationManager.getLobbyIdForButton(bId);
-if (targetLobbyId != null) {
+                if (targetLobbyId != null) {
                     joinLobby(targetLobbyId);
                 }
-});
-            // async fetch status and update image
-});
-            // async fetch status and update image
-            CompletableFuture.supplyAsync(() -> lobbyClient.fetchLobbyStatusString(lobbyId), executor)
-                    .thenAccept(statusStr -> {
-                        LobbyStatus status = parseLobbyStatus(statusStr);
-                        String path = getImagePathForButton(buttonId, status == null ? LobbyStatus.CREATED : status);
-                        Image img = safeLoadImage(path);
-                        javafx.application.Platform.runLater(() -> {
-                            ImageView iv = new ImageView(img);
-                            iv.setPreserveRatio(true);
-                            iv.fitWidthProperty()
-                                    .bind(gridPane.widthProperty().divide(COLS).subtract(BUTTON_WIDTH_MARGIN));
-                            iv.setSmooth(true);
-                            btn.setGraphic(iv);
             });
+            // async fetch status and update image
             CompletableFuture.supplyAsync(() -> lobbyClient.fetchLobbyStatusString(lobbyId), executor)
                     .thenAccept(statusStr -> {
                         LobbyStatus status = parseLobbyStatus(statusStr);
@@ -214,12 +186,6 @@ if (targetLobbyId != null) {
         }
     }
 
-    private String getImagePathForStatus(LobbyStatus status) {
-        return status == LobbyStatus.CREATED
-                ? String.format(BUTTON_IMAGE_TEMPLATE, 0, "created")
-                : String.format(BUTTON_IMAGE_TEMPLATE, 0, "running");
-    }
-
     private String getImagePathForButton(int buttonId, LobbyStatus status) {
         String statusStr = status == LobbyStatus.CREATED ? "created" : "running";
         return String.format(BUTTON_IMAGE_TEMPLATE, buttonId, statusStr);
@@ -265,9 +231,6 @@ if (targetLobbyId != null) {
 
     /** Update all lobby buttons' images according to the current lobby statuses. */
     public void updateLobbyButtonImages() {
-        // Run on FX thread to be safe
-        javafx.application.Platform.runLater(
-                () -> {
         Map<Integer, Integer> mapping = translationManager.getButtonIdToLobbyId();
         if (mapping.isEmpty()) {
             return;
@@ -279,7 +242,7 @@ if (targetLobbyId != null) {
             CompletableFuture.supplyAsync(() -> getLobbyStatus(lobbyId), executor)
                     .thenAccept(status -> {
                         String path = getImagePathForButton(buttonId, status);
-javafx.application.Platform.runLater(() -> {
+                        javafx.application.Platform.runLater(() -> {
                             for (Node node : gridPane.getChildren()) {
                                 if (node instanceof Button && ("lobbyBtn-" + buttonId).equals(node.getId())) {
                                     Button btn = (Button) node;
@@ -295,10 +258,9 @@ javafx.application.Platform.runLater(() -> {
                                     break;
                                 }
                             }
-});
+                        });
                     });
         }
-                });
     }
 
     /**
@@ -310,13 +272,13 @@ javafx.application.Platform.runLater(() -> {
         try {
             int lobbyId = lobbyClient.createLobby();
             LOGGER.info("Lobby created via LobbyClient: {}", lobbyId);
+            if (lobbyId <= 0) {
+                throw new RuntimeException("LobbyClient returned invalid lobby id: " + lobbyId);
+            }
             return lobbyId;
         } catch (Exception e) {
             LOGGER.error("Failed to create lobby via LobbyClient: {}", e.getMessage());
-            // Fallback: generate a local id so UI can continue to work in offline mode
+            throw new RuntimeException("Failed to create lobby", e);
-            int lobbyId = (int) (Math.random() * MAX_RANDOM_LOBBY_ID + 1);
-            LOGGER.warn("Falling back to local generated lobby id: {}", lobbyId);
-            return lobbyId;
         }
     }
 
@@ -374,4 +336,12 @@ javafx.application.Platform.runLater(() -> {
         return gridPane;
     }
 
+    /**
+     * Expose the configured LobbyClient so callers can invoke its methods
+     * directly (createLobby, fetchLobbyStatusString, joinLobby, ...).
+     */
+    public LobbyClient getLobbyClient() {
+        return lobbyClient;
+    }
+
 }