Mqtt added, changed MVC to MVVM hybrid architecture

pom.xml

@@ -26,6 +26,11 @@
             <version>2.1.0</version>
             <type>jar</type>
         </dependency>
+        <dependency>
+            <groupId>org.eclipse.paho</groupId>
+            <artifactId>org.eclipse.paho.client.mqttv3</artifactId>
+            <version>1.2.5</version>
+        </dependency>
     </dependencies>
     <build>
         <plugins>

src/main/java/efi/projekt/gesundheitsassistent/FxStart.java

@@ -1,13 +1,13 @@
 package efi.projekt.gesundheitsassistent;
 
-import atlantafx.base.theme.NordDark;
+import atlantafx.base.theme.Dracula;
-import efi.projekt.gesundheitsassistent.controller.MetadataDialogController;
+import efi.projekt.gesundheitsassistent.model.FxModel;
-import efi.projekt.gesundheitsassistent.model.Metadata;
+import efi.projekt.gesundheitsassistent.controller.FxViewController;
+import efi.projekt.gesundheitsassistent.viewmodel.FxViewModel;
 import javafx.application.Application;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Parent;
 import javafx.scene.Scene;
-import javafx.stage.Modality;
 import javafx.stage.Stage;
 
 import java.io.IOException;
@@ -19,48 +19,29 @@ import java.io.IOException;
  */
 public class FxStart extends Application {
     
-    private static Scene scene;
-    private Metadata metadata; // das zentrale Model
-
     @Override
     public void start(Stage primaryStage) throws IOException {
+        // Lade FXML
+        FXMLLoader loader = new FXMLLoader(getClass().getResource("/efi/projekt/gesundheitsassistent/view/FxView.fxml"));
+        Parent root = loader.load();
         
-        // 1️⃣ Metadata Model erzeugen
+        FxViewController controller = loader.getController();
-        metadata = new Metadata();
         
-        // 2️⃣ Metadata Dialog laden
+        // Erzeuge Model & ViewModel
-        FXMLLoader dialogLoader = new FXMLLoader(getClass()
+        FxModel model = new FxModel();
-                .getResource("/efi/projekt/gesundheitsassistent/view/MetadataDialog.fxml"));
+        FxViewModel viewModel = new FxViewModel(model);
-        Parent dialogRoot = dialogLoader.load();
         
-        // Controller bekommen und Model übergeben
+        // Verbinde Controller mit ViewModel
-        MetadataDialogController dialogController = dialogLoader.getController();
+        controller.setViewModel(viewModel);
-        dialogController.setMetadata(metadata);
 
-        // 3️⃣ Dialog Stage erzeugen
+        Scene scene = new Scene(root, 1280, 720);
-        Stage dialogStage = new Stage();
+        Application.setUserAgentStylesheet(new Dracula().getUserAgentStylesheet());
-        dialogStage.setTitle("Metadaten eingeben");
-        dialogStage.initModality(Modality.APPLICATION_MODAL); // blockiert Hauptfenster
-        dialogStage.setScene(new Scene(dialogRoot));
-        dialogStage.showAndWait(); // wartet bis Dialog geschlossen wird
-
-        // 4️⃣ Hauptfenster laden
-        FXMLLoader mainLoader = new FXMLLoader(getClass()
-                .getResource("/efi/projekt/gesundheitsassistent/view/FxView.fxml"));
-        Parent mainRoot = mainLoader.load();
-
-        scene = new Scene(mainRoot, 1280, 720);
-        Application.setUserAgentStylesheet(new NordDark().getUserAgentStylesheet());
 
         primaryStage.setTitle("Virtueller Gesundheitsassistent");
         primaryStage.setScene(scene);
         primaryStage.show();
     }
 
-    static void setRoot(String fxml) throws IOException {
-        scene.setRoot(loadFXML(fxml));
-    }
-
     private static Parent loadFXML(String fxml) throws IOException {
         FXMLLoader fxmlLoader = new FXMLLoader(
                 FxStart.class.getResource("/efi/projekt/gesundheitsassistent/view/" + fxml + ".fxml")
@@ -71,8 +52,4 @@ public class FxStart extends Application {
     public static void main(String[] args) {
         launch();
     }
-
-    public Metadata getMetadata() {
-        return metadata;
-    }
 }

src/main/java/efi/projekt/gesundheitsassistent/controller/FxViewController.java

@@ -5,13 +5,23 @@
 package efi.projekt.gesundheitsassistent.controller;
 
 import efi.projekt.gesundheitsassistent.model.FxModel;
+import efi.projekt.gesundheitsassistent.model.Metadata;
+import efi.projekt.gesundheitsassistent.viewmodel.FxViewModel;
+import efi.projekt.gesundheitsassistent.viewmodel.MetadataDialogViewModel;
+import java.io.IOException;
 import java.net.URL;
 import java.util.ResourceBundle;
 import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
 import javafx.fxml.Initializable;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
 import javafx.scene.control.Alert;
 import javafx.scene.control.Button;
 import javafx.scene.control.ButtonType;
+import javafx.scene.control.TextField;
+import javafx.stage.Modality;
+import javafx.stage.Stage;
 
 /**
  * FXML Controller class
@@ -20,17 +30,27 @@ import javafx.scene.control.ButtonType;
  */
 public class FxViewController implements Initializable {
 
-    private FxModel model; 
+    private FxViewModel viewModel; 
     
-    @FXML
+    @FXML private Button exitButton;
-    private Button exitButton;
+    @FXML private TextField messageInputField;
+    @FXML private TextField messageOutputField;
+    @FXML private Button sendButton;
 
-    /**
-     * Initializes the controller class.
-     */
     @Override
     public void initialize(URL url, ResourceBundle rb) {
+        exitButton.setOnAction(e -> handleExit());
+    }
     
+    public void setViewModel(FxViewModel viewModel) {
+        this.viewModel = viewModel;
+        initBindings();
+    }
+    
+    public void initBindings() {
+        //Bindings: View <-> ViewModel
+        messageInputField.textProperty().bindBidirectional(viewModel.outgoingMessageProperty());
+        messageOutputField.textProperty().bindBidirectional(viewModel.incomingMessageProperty());
     }
     
     @FXML
@@ -39,10 +59,30 @@ public class FxViewController implements Initializable {
         alert.showAndWait()
             .filter(response -> response == ButtonType.OK)
             .ifPresent(response -> System.exit(0));                  
-                           
     }
     
-    public void setModel(FxModel model) {
+    @FXML
-        this.model = model;
+    private void handleSendMessage() {
+        viewModel.sendMessage(messageInputField.getText());
+    }
+    
+    @FXML
+    private void handleOptions() throws IOException {
+        // Dialog 
+        FXMLLoader loader = new FXMLLoader(getClass()
+                .getResource("/efi/projekt/gesundheitsassistent/view/MetadataDialog.fxml"));
+        Parent dialogRoot = loader.load();
+
+        // ViewModel erzeugen
+        Metadata metadata = new Metadata();
+        loader.<MetadataDialogController>getController().setViewModel(
+            new MetadataDialogViewModel(metadata)
+        );
+
+        // Dialog Stage erzeugen
+        Stage dialogStage = new Stage();
+        dialogStage.initModality(Modality.APPLICATION_MODAL);
+        dialogStage.setScene(new Scene(dialogRoot));
+        dialogStage.showAndWait();
     }
 }

src/main/java/efi/projekt/gesundheitsassistent/controller/MetadataDialogController.java

@@ -5,12 +5,14 @@
 package efi.projekt.gesundheitsassistent.controller;
 
 import efi.projekt.gesundheitsassistent.model.Metadata;
+import efi.projekt.gesundheitsassistent.viewmodel.MetadataDialogViewModel;
 import javafx.fxml.FXML;
 import javafx.scene.control.Alert;
 import javafx.scene.control.ButtonType;
 import javafx.scene.control.ChoiceBox;
 import javafx.scene.control.TextField;
 import javafx.stage.Stage;
+import javafx.util.converter.NumberStringConverter;
 
 /**
  *
@@ -18,59 +20,39 @@ import javafx.stage.Stage;
  */
 public class MetadataDialogController {
 
-    @FXML
+    @FXML private TextField nameField;
-    private TextField nameField;
+    @FXML private TextField ageField;
+    @FXML private ChoiceBox<String> genderChoiceBox;
+    @FXML private TextField heightField;
+    @FXML private TextField weightField;
 
-    @FXML
+    private MetadataDialogViewModel viewModel;
-    private TextField ageField;
 
-    @FXML
+    public void setViewModel(MetadataDialogViewModel viewModel) {
-    private ChoiceBox<String> genderChoiceBox;
+        this.viewModel = viewModel;
         
-    @FXML
-    private TextField heightField;
-
-    @FXML
-    private TextField weightField;
-
-    private Metadata metadata;
-
-    public void initialize() {
-        // ChoiceBox füllen
         genderChoiceBox.getItems().addAll("Männlich", "Weiblich", "Divers");
-        genderChoiceBox.setValue("Männlich"); // default
-    }
         
-    public void setMetadata(Metadata metadata) {
+        // Bindings
-        this.metadata = metadata;
+        nameField.textProperty().bindBidirectional(viewModel.nameProperty());
-        bindFields();
+        ageField.textProperty().bindBidirectional(viewModel.ageProperty(), new NumberStringConverter());
-    }
+        genderChoiceBox.valueProperty().bindBidirectional(viewModel.genderProperty());
-
+        heightField.textProperty().bindBidirectional(viewModel.heightProperty(), new NumberStringConverter());
-    private void bindFields() {
+        weightField.textProperty().bindBidirectional(viewModel.weightProperty(), new NumberStringConverter());
-        // Bidirektionales Binding zwischen Model und UI
-        nameField.textProperty().bindBidirectional(metadata.nameProperty());
-        ageField.textProperty().bindBidirectional(metadata.ageProperty(), new javafx.util.converter.NumberStringConverter());
-        genderChoiceBox.valueProperty().bindBidirectional(metadata.genderProperty());
-        heightField.textProperty().bindBidirectional(metadata.heightProperty(), new javafx.util.converter.NumberStringConverter());
-        weightField.textProperty().bindBidirectional(metadata.weightProperty(), new javafx.util.converter.NumberStringConverter());
     }
 
     @FXML
     private void handleOk() {
         try {
-            metadata.validate();
+            viewModel.save();
-            // Dialog schließen
+            ((Stage) nameField.getScene().getWindow()).close();
-            Stage stage = (Stage) nameField.getScene().getWindow();
-            stage.close();
         } catch (IllegalArgumentException e) {
-            Alert alert = new Alert(Alert.AlertType.ERROR, e.getMessage(), ButtonType.OK);
+            new Alert(Alert.AlertType.ERROR, e.getMessage(), ButtonType.OK).showAndWait();
-            alert.showAndWait();
         }
     }
 
     @FXML
     private void handleCancel() {
-        Stage stage = (Stage) nameField.getScene().getWindow();
+        ((Stage) nameField.getScene().getWindow()).close();
-        stage.close();
     }
 }

src/main/java/efi/projekt/gesundheitsassistent/model/FxModel.java

@@ -19,6 +19,7 @@ import javafx.beans.property.StringProperty;
 public class FxModel implements Serializable {
 
     private final StringProperty id = new SimpleStringProperty(this, "id");
+    private MqttJavaClient mqttClient = new MqttJavaClient();
 
     public FxModel() {}
 
@@ -33,5 +34,16 @@ public class FxModel implements Serializable {
     public void validate() throws IllegalArgumentException {
         // Subklassen können überschreiben
     }
+    
+    public void publishMessage(String topic, String messageContent, int qos) {
+        getMqttClient().publishMessage(topic, messageContent, qos);
+    }
+
+    /**
+     * @return the mqttClient
+     */
+    public MqttJavaClient getMqttClient() {
+        return mqttClient;
+    }
 }
 

src/main/java/efi/projekt/gesundheitsassistent/model/MqttJavaClient.java

@@ -0,0 +1,102 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package efi.projekt.gesundheitsassistent.model;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Consumer;
+import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
+import org.eclipse.paho.client.mqttv3.MqttCallback;
+import org.eclipse.paho.client.mqttv3.MqttClient;
+import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
+import org.eclipse.paho.client.mqttv3.MqttException;
+import org.eclipse.paho.client.mqttv3.MqttMessage;
+import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
+
+/**
+ *
+ * @author aumni
+ */
+public class MqttJavaClient implements MqttCallback {
+
+    private Map<String, Consumer<String>> topicListeners = new HashMap<>();
+    
+    private static final String BROKER_URL = "tcp://localhost:1883";
+    private static final String CLIENT_ID = "JavaClientPublisherSubscriber";
+    private static final String PUBLISH_TOPIC = "temperatur";
+    private static final String SUBSCRIBE_TOPIC = "Text";
+    
+    private MqttClient client;
+
+    public MqttJavaClient() {
+        try {
+            client = new MqttClient(BROKER_URL, CLIENT_ID, new MemoryPersistence());
+            client.setCallback(this);
+
+            MqttConnectOptions options = new MqttConnectOptions();
+            options.setCleanSession(true);
+            options.setAutomaticReconnect(true);
+
+            System.out.println("Verbinde mit Broker..." + BROKER_URL);
+            client.connect(options);
+            System.out.println("Verbunden");
+
+            System.out.println("Abonniere Topic: " + SUBSCRIBE_TOPIC);
+            client.subscribe(SUBSCRIBE_TOPIC);
+            System.out.println("Topic abonniert!");
+
+        } catch (MqttException ex) {
+            System.err.println("Fehler beim Initialisieren oder Verbinden: " + ex.getMessage());
+            ex.printStackTrace();
+        }
+    }
+    
+    public void addTopicListeners(String topic, Consumer<String> listener) {
+        topicListeners.put(topic, listener);
+        try {
+            client.subscribe(topic);
+            System.out.println("Abonniert: " + topic);
+        } catch (MqttException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void publishMessage(String topic, String message, int qos) {
+        try {
+            MqttMessage msg = new MqttMessage(message.getBytes());
+            msg.setQos(qos);
+            client.publish(topic, msg);
+            System.out.println("Nachricht veröffentlicht: Topic = " + topic + ", Inhalt = " + message + ", QoS = " + qos);
+        } catch (MqttException ex) {
+            System.err.println("Fehler beim Veröffentlicher der Nachricht: " + ex.getMessage());
+            ex.printStackTrace();
+        }
+    }
+
+    @Override
+    public void connectionLost(Throwable cause) {
+        System.out.println("Verbindung zum Broker verloren! Ursache: " + cause.getMessage());
+    }
+
+    @Override
+    public void messageArrived(String topic, MqttMessage message) throws Exception {
+        String payload = new String(message.getPayload());
+        
+        System.out.println("Nachricht emmpfangen:");
+        System.out.println(" Topic: " + topic);
+        System.out.println(" Inhalt: " + new String(message.getPayload()));
+        System.out.println(" QoS: " + message.getQos());
+
+        Consumer<String> listener = topicListeners.get(topic);
+        if (listener != null) {
+            listener.accept(payload);
+        }  
+    }
+
+    @Override
+    public void deliveryComplete(IMqttDeliveryToken token) {
+        System.out.println("Nachricht erfolgreich zugestellt (QoS > 0). Token: " + token.getMessageId());
+    }
+}

src/main/java/efi/projekt/gesundheitsassistent/viewmodel/FxViewModel.java

@@ -0,0 +1,50 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package efi.projekt.gesundheitsassistent.viewmodel;
+
+import efi.projekt.gesundheitsassistent.model.FxModel;
+import java.util.HashMap;
+import java.util.Map;
+import javafx.application.Platform;
+import javafx.beans.property.SimpleStringProperty;
+import javafx.beans.property.StringProperty;
+
+/**
+ *
+ * @author naumueller
+ */
+public class FxViewModel {
+    
+    private final FxModel model;
+    private Map<String, StringProperty> topicMessages = new HashMap<>();
+    private final StringProperty incomingMessage = new SimpleStringProperty("");
+    private final StringProperty outgoingMessage = new SimpleStringProperty("");
+    
+    private final StringProperty messageToSend = new SimpleStringProperty("");
+    
+    public FxViewModel(FxModel model) {
+        this.model = model;
+        
+        subscribeTopic("Text");
+        subscribeTopic("Temperatur");
+    }
+    
+    public void subscribeTopic(String topic) {
+        model.getMqttClient().addTopicListeners(topic, msg -> {
+            Platform.runLater(() -> getTopicProperty(topic).set(msg));
+        });
+    }
+    
+    public void sendMessage(String msg) {
+        if (msg != null && !msg.isBlank()) {
+            model.getMqttClient().publishMessage("Text", msg, 1);
+            outgoingMessage.set("");
+        }
+    }
+    
+    public StringProperty incomingMessageProperty() { return incomingMessage; }
+    public StringProperty outgoingMessageProperty() { return outgoingMessage; }
+    public StringProperty getTopicProperty(String topic) { return topicMessages.computeIfAbsent(topic, t -> new SimpleStringProperty()); }
+}

src/main/java/efi/projekt/gesundheitsassistent/viewmodel/MetadataDialogViewModel.java

@@ -0,0 +1,33 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package efi.projekt.gesundheitsassistent.viewmodel;
+
+import efi.projekt.gesundheitsassistent.model.Metadata;
+import javafx.beans.property.DoubleProperty;
+import javafx.beans.property.IntegerProperty;
+import javafx.beans.property.StringProperty;
+
+/**
+ *
+ * @author naumueller
+ */
+public class MetadataDialogViewModel {
+   
+    private final Metadata metadata;
+    
+    public MetadataDialogViewModel(Metadata metadata) {
+        this.metadata = metadata;
+    }
+    
+    public StringProperty nameProperty() { return metadata.nameProperty(); }
+    public IntegerProperty ageProperty() { return metadata.ageProperty(); }
+    public StringProperty genderProperty() { return metadata.genderProperty(); }
+    public DoubleProperty heightProperty() { return metadata.heightProperty(); }
+    public DoubleProperty weightProperty() { return metadata.weightProperty(); }
+    
+    public void save() {
+        metadata.validate();
+    }
+}

src/main/java/module-info.java

@@ -3,6 +3,7 @@ module efi.projekt.gesundheitsassistent {
     requires javafx.fxml;
     requires java.base;
     requires atlantafx.base;
+    requires org.eclipse.paho.client.mqttv3;
 
     opens efi.projekt.gesundheitsassistent to javafx.fxml;
     opens efi.projekt.gesundheitsassistent.controller to javafx.fxml;

src/main/resources/efi/projekt/gesundheitsassistent/view/FxView.fxml

@@ -3,7 +3,10 @@
 <?import javafx.geometry.Insets?>
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.Label?>
+<?import javafx.scene.control.TextField?>
 <?import javafx.scene.control.TitledPane?>
+<?import javafx.scene.image.Image?>
+<?import javafx.scene.image.ImageView?>
 <?import javafx.scene.layout.BorderPane?>
 <?import javafx.scene.layout.HBox?>
 <?import javafx.scene.layout.StackPane?>
@@ -18,7 +21,7 @@
                 <Insets bottom="15" left="15" right="15" top="15" />
             </padding>
             <Label text="Virtueller Gesundheitsassistent" />
-            <Button text="Einstellungen" />
+            <Button onMouseClicked="#handleOptions" text="Einstellungen" />
         </HBox>
     </top>
 
@@ -29,7 +32,7 @@
                 <Insets bottom="15" left="15" right="15" top="15" />
             </padding>
             <!-- Linke Seite: Gesundheitsdaten -->
-            <VBox alignment="CENTER" spacing="15" HBox.hgrow="ALWAYS">
+            <!--<VBox alignment="CENTER" spacing="15" HBox.hgrow="ALWAYS">
                 <TitledPane text="Gesundheitsdaten">
                     <content>
                         <VBox spacing="10">
@@ -42,6 +45,46 @@
                         </VBox>
                     </content>
                 </TitledPane>
+            </VBox>-->
+            
+            <VBox alignment="CENTER" spacing="15" HBox.hgrow="ALWAYS">
+                <TitledPane text="Gesundheitsdaten">
+                    <content>
+                        <VBox spacing="10">
+                            <padding>
+                                <Insets bottom="10" left="10" right="10" top="10" />
+                            </padding>
+
+                            <!-- Herzfrequenz -->
+                            <HBox alignment="CENTER_LEFT" spacing="10">
+                                <ImageView fitHeight="24" fitWidth="24" pickOnBounds="true" preserveRatio="true">
+                           <image>
+                              <Image url="@../icons/icons8-health-48.png" />
+                           </image></ImageView>
+                                <Label text="Herzfrequenz: 72 bpm" />
+                            </HBox>
+
+                            <!-- Temperatur -->
+                            <HBox alignment="CENTER_LEFT" spacing="10">
+                                <ImageView fitHeight="24" fitWidth="24" pickOnBounds="true" preserveRatio="true">
+                           <image>
+                              <Image url="@../icons/icons8-temperature-48.png" />
+                           </image></ImageView>
+                                <Label text="Temperatur: 36.8 °C" />
+                            </HBox>
+
+                            <!-- Stress-Level -->
+                            <HBox alignment="CENTER_LEFT" spacing="10">
+                                <ImageView fitHeight="24" fitWidth="24" pickOnBounds="true" preserveRatio="true">
+                           <image>
+                              <Image url="@../icons/icons8-stress-64.png" />
+                           </image></ImageView>
+                                <Label text="Stress-Level: Niedrig" />
+                            </HBox>
+
+                        </VBox>
+                    </content>
+                </TitledPane>
             </VBox>
 
             <!-- Rechte Seite: Avatar -->
@@ -49,9 +92,18 @@
                 <TitledPane text="Avatar">
                     <content>
                         <StackPane fx:id="avatarContainer" alignment="CENTER" prefHeight="400" prefWidth="400">
-                            <Label text="3D-Avatar wird geladen..." textFill="white" />
+                            <HBox alignment="CENTER" spacing="10">
+                                <ImageView fitHeight="300.0" fitWidth="300.0" pickOnBounds="true" preserveRatio="true">
+                           <image>
+                              <Image url="@../icons/icons8-account-male.gif" />
+                           </image>
+                        </ImageView>
+                            </HBox>
                         </StackPane>
                     </content>
+               <graphic>
+                         <Label text="3D-Avatar wird geladen..." textFill="white" />
+               </graphic>
                 </TitledPane>
             </VBox>
         </HBox>
@@ -63,7 +115,10 @@
             <padding>
                 <Insets bottom="15" left="15" right="15" top="15" />
             </padding>
-            <Button onMouseClicked="#handleExit" text="Beenden" />
+         <Button fx:id="sendButton" mnemonicParsing="false" onMouseClicked="#handleSendMessage" text="Send message" />
+         <TextField fx:id="messageInputField" />
+         <TextField fx:id="messageOutputField" editable="false" />
+            <Button fx:id="exitButton" onMouseClicked="#handleExit" text="Beenden" />
         </HBox>
     </bottom>