Enhancement/78 implement main menu view

src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/Main.java

@@ -3,12 +3,17 @@
 import edu.ntnu.idi.idatt2003.g40.mappe.model.Stock;
 import edu.ntnu.idi.idatt2003.g40.mappe.service.FileConverter;
 import edu.ntnu.idi.idatt2003.g40.mappe.service.FileParser;
+import edu.ntnu.idi.idatt2003.g40.mappe.service.SaveGameService;
 import edu.ntnu.idi.idatt2003.g40.mappe.service.event.EventManager;
 import edu.ntnu.idi.idatt2003.g40.mappe.utils.ConfigValues;
 import edu.ntnu.idi.idatt2003.g40.mappe.view.ViewManager;
 import edu.ntnu.idi.idatt2003.g40.mappe.view.ingame.InGameView;
 import edu.ntnu.idi.idatt2003.g40.mappe.view.mainmenu.MainMenuController;
 import edu.ntnu.idi.idatt2003.g40.mappe.view.mainmenu.MainMenuView;
+import edu.ntnu.idi.idatt2003.g40.mappe.view.playgame.PlayGameController;
+import edu.ntnu.idi.idatt2003.g40.mappe.view.playgame.PlayGameView;
+import edu.ntnu.idi.idatt2003.g40.mappe.view.settings.SettingsController;
+import edu.ntnu.idi.idatt2003.g40.mappe.view.settings.SettingsView;
 import java.io.IOException;
 import java.util.List;
 import java.util.Objects;
@@ -26,6 +31,7 @@
  * <p>Initializes the application through the javafx framework.</p>
  * */
 public class Main extends Application {
+
   static void main() {
     FileParser parser1 = new FileParser("src/main/resources/dummydata.txt");
     FileConverter converter1 = new FileConverter();
@@ -50,17 +56,37 @@ public void start(final Stage stage) throws Exception {
     stage.setScene(scene);
     stage.setWidth(ConfigValues.VIEWPORT_WIDTH.getValue());
     stage.setHeight(ConfigValues.VIEWPORT_HEIGHT.getValue());
+
     EventManager eventManager = new EventManager();
     ViewManager viewManager = new ViewManager(stage, eventManager);
 
+    // Main menu
     MainMenuView mainMenuView = new MainMenuView();
     new MainMenuController(mainMenuView, eventManager);
 
+    // Play game (mellom hovedmeny og spillet)
+    PlayGameView playGameView = new PlayGameView();
+    new PlayGameController(playGameView, eventManager);
+
+    // Last lagrede spill fra disk.
+    SaveGameService saveGameService = new SaveGameService();
+    playGameView.setSaves(saveGameService.loadSaves());
+
+
+    // Settings
+    SettingsView settingsView = new SettingsView();
+    new SettingsController(settingsView, eventManager);
+
+    // In-game
     InGameView inGameView = new InGameView();
 
+    // Registrer alle views og start på hovedmenyen
     viewManager.addView(mainMenuView);
+    viewManager.addView(playGameView);
+    viewManager.addView(settingsView);
     viewManager.addView(inGameView);
     viewManager.setScene(mainMenuView);
+
     stage.show();
   }
-}
+}

src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/model/SaveGame.java

@@ -0,0 +1,47 @@
+package edu.ntnu.idi.idatt2003.g40.mappe.model;
+
+/**
+ * Represents one save game entry.
+ *
+ * <p>
+ * Holds the display name and the current balance for a single
+ * saved game.
+ * </p>
+ */
+public class SaveGame {
+
+    /** Display name of the save. */
+    private final String name;
+
+    /** Current balance in the save. */
+    private final double balance;
+
+    /**
+     * Constructor.
+     *
+     * @param name    the display name of the save.
+     * @param balance the current balance value.
+     */
+    public SaveGame(final String name, final double balance) {
+        this.name = name;
+        this.balance = balance;
+    }
+
+    /**
+     * Getter method for the name.
+     *
+     * @return the save name.
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Getter method for the balance.
+     *
+     * @return the balance value.
+     */
+    public double getBalance() {
+        return balance;
+    }
+}

src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/service/SaveGameService.java

@@ -0,0 +1,107 @@
+package edu.ntnu.idi.idatt2003.g40.mappe.service;
+
+import edu.ntnu.idi.idatt2003.g40.mappe.model.SaveGame;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Service for loading and saving {@link SaveGame} entries from disk.
+ *
+ * <p>
+ * Save file format (one entry per line):
+ * </p>
+ * 
+ * <pre>
+ * # Comment lines start with hash
+ * SaveName, 1234567.89
+ * </pre>
+ *
+ * <p>
+ * Lines that don't match the expected format are skipped.
+ * </p>
+ */
+public class SaveGameService {
+
+    /** Default location of the save file. */
+    private static final String DEFAULT_PATH = "src/main/resources/saves.txt";
+
+    /** Path to the save file. */
+    private final String filePath;
+
+    /**
+     * Constructor with default path.
+     */
+    public SaveGameService() {
+        this(DEFAULT_PATH);
+    }
+
+    /**
+     * Constructor with custom path.
+     *
+     * @param filePath the path to the save file.
+     */
+    public SaveGameService(final String filePath) {
+        this.filePath = filePath;
+    }
+
+    /**
+     * Loads all save games from the file.
+     *
+     * <p>
+     * Returns an empty list if the file cannot be read or is empty.
+     * </p>
+     *
+     * @return the loaded {@link SaveGame} entries.
+     */
+    public List<SaveGame> loadSaves() {
+        List<SaveGame> saves = new ArrayList<>();
+        Path path = Paths.get(filePath);
+        try {
+            List<String> lines = Files.readAllLines(path);
+            for (String line : lines) {
+                SaveGame save = parseLine(line);
+                if (save != null) {
+                    saves.add(save);
+                }
+            }
+        } catch (IOException e) {
+            System.err.println("Could not read save file: " + e.getMessage());
+        }
+        return saves;
+    }
+
+    /**
+     * Parses a single line into a {@link SaveGame}.
+     *
+     * <p>
+     * Returns null for invalid lines, comment lines, and blank lines.
+     * </p>
+     *
+     * @param line the raw line from the file.
+     * @return the parsed {@link SaveGame}, or null if the line is invalid.
+     */
+    private SaveGame parseLine(final String line) {
+        if (line == null || line.isBlank() || line.trim().startsWith("#")) {
+            return null;
+        }
+        String[] parts = line.split(",");
+        if (parts.length != 2) {
+            return null;
+        }
+        try {
+            String name = parts[0].trim();
+            double balance = Double.parseDouble(parts[1].trim());
+            if (name.isEmpty()) {
+                return null;
+            }
+            return new SaveGame(name, balance);
+        } catch (NumberFormatException e) {
+            return null;
+        }
+    }
+}

src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/view/ViewElement.java

@@ -146,4 +146,11 @@ public ArrayList<Button> getButtons() {
   public <T2 extends ViewData> void setData(final T2 data) {
     setViewName(data.getSceneName());
   }
+
+  /**
+   * Method called when updating a view.
+   * */
+  public void onUpdate() {
+
+  }
 }

src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/view/mainmenu/MainMenuController.java

@@ -5,37 +5,50 @@
 import edu.ntnu.idi.idatt2003.g40.mappe.service.event.EventType;
 import edu.ntnu.idi.idatt2003.g40.mappe.view.ViewController;
 import edu.ntnu.idi.idatt2003.g40.mappe.view.ViewData;
+import javafx.application.Platform;
 
 /**
  * Controller for the {@link MainMenuView}.
  *
- * <p>Extends {@link ViewController}</p>
- * */
+ * <p>
+ * Extends {@link ViewController}
+ * </p>
+ */
 public class MainMenuController extends ViewController<MainMenuView> {
 
   /**
    * Constructor.
    *
-   * @param view The {@link MainMenuView} object to attach this controller to.
+   * @param view         The {@link MainMenuView} object to attach this controller
+   *                     to.
    * @param eventManager the active {@link EventManager}.
-   * */
+   */
   public MainMenuController(final MainMenuView view,
-                            final EventManager eventManager) {
+      final EventManager eventManager) {
     super(view, eventManager);
   }
 
   /**
    * {@inheritDoc}
    *
-   * <p>Sets play game button functionality</p>
-   * */
+   * <p>
+   * Sets play game, settings, and exit button functionality.
+   * </p>
+   */
   @Override
   protected void initInteractions() {
     getViewElement().getToGameButton().setOnAction(e -> {
-      ViewData viewData = new ViewData("InGameView");
-      EventData<ViewData> eventData =
-              new EventData<>(EventType.SCENE_CHANGE, viewData);
+      ViewData viewData = new ViewData("PlayGameView");
+      EventData<ViewData> eventData = new EventData<>(EventType.SCENE_CHANGE, viewData);
       invoke(eventData, getEventManager());
     });
+
+    getViewElement().getSettingsButton().setOnAction(e -> {
+      ViewData viewData = new ViewData("SettingsView");
+      EventData<ViewData> eventData = new EventData<>(EventType.SCENE_CHANGE, viewData);
+      getEventManager().invokeEvent(eventData);
+    });
+
+    getViewElement().getExitButton().setOnAction(e -> Platform.exit());
   }
-}
+}

src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/view/mainmenu/MainMenuView.java

@@ -116,4 +116,5 @@ protected void initStyling() {
     settingsButton.getStyleClass().add("menu-button");
     exitButton.getStyleClass().add("menu-button");
   }
+
 }

src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/view/playgame/PlayGameController.java

@@ -0,0 +1,57 @@
+package edu.ntnu.idi.idatt2003.g40.mappe.view.playgame;
+
+import edu.ntnu.idi.idatt2003.g40.mappe.service.event.EventData;
+import edu.ntnu.idi.idatt2003.g40.mappe.service.event.EventManager;
+import edu.ntnu.idi.idatt2003.g40.mappe.service.event.EventType;
+import edu.ntnu.idi.idatt2003.g40.mappe.view.ViewController;
+import edu.ntnu.idi.idatt2003.g40.mappe.view.ViewData;
+
+/**
+ * Controller for the {@link PlayGameView}.
+ *
+ * <p>
+ * Extends {@link ViewController}
+ * </p>
+ */
+public class PlayGameController extends ViewController<PlayGameView> {
+
+    /**
+     * Constructor.
+     *
+     * @param view         The {@link PlayGameView} object to attach this controller
+     *                     to.
+     * @param eventManager the active {@link EventManager}.
+     */
+    public PlayGameController(final PlayGameView view,
+            final EventManager eventManager) {
+        super(view, eventManager);
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * <p>
+     * Sets create new game, back, and save-row click functionality.
+     * </p>
+     */
+    @Override
+    protected void initInteractions() {
+        getViewElement().getCreateNewGameButton().setOnAction(e -> {
+            ViewData viewData = new ViewData("InGameView");
+            EventData<ViewData> eventData = new EventData<>(EventType.SCENE_CHANGE, viewData);
+            getEventManager().invokeEvent(eventData);
+        });
+
+        getViewElement().getBackButton().setOnAction(e -> {
+            ViewData viewData = new ViewData("MainMenu");
+            EventData<ViewData> eventData = new EventData<>(EventType.SCENE_CHANGE, viewData);
+            getEventManager().invokeEvent(eventData);
+        });
+
+        getViewElement().setOnSaveSelected(save -> {
+            ViewData viewData = new ViewData("InGameView");
+            EventData<ViewData> eventData = new EventData<>(EventType.SCENE_CHANGE, viewData);
+            getEventManager().invokeEvent(eventData);
+        });
+    }
+}