labb3

.gitignore

@@ -1,2 +1,3 @@
 target/
 /.idea/
+.env

pom.xml

@@ -40,6 +40,16 @@
             <artifactId>javafx-controls</artifactId>
             <version>${javafx.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.19.0</version>
+        </dependency>
+        <dependency>
+            <groupId>io.github.cdimascio</groupId>
+            <artifactId>dotenv-java</artifactId>
+            <version>3.2.0</version>
+        </dependency>
         <dependency>
             <groupId>org.openjfx</groupId>
             <artifactId>javafx-fxml</artifactId>
@@ -63,6 +73,15 @@
                     <noManPages>true</noManPages>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>25</source>
+                    <target>25</target>
+                    <compilerArgs>--enable-preview</compilerArgs>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 </project>

src/main/java/com/example/HelloController.java

@@ -1,22 +1,213 @@
 package com.example;
 
+import javafx.beans.binding.Bindings;
+
 import javafx.fxml.FXML;
-import javafx.scene.control.Label;
+
+import javafx.scene.control.*;
+
+import javafx.stage.FileChooser;
+import javafx.stage.Stage;
+
+import java.io.File;
+
+
 
 /**
- * Controller layer: mediates between the view (FXML) and the model.
+ * Controller layer: Manages the user interface and mediates communication between the View (FXML) and the Model (HelloModel).
+ * Handles user interactions such as sending messages, attaching files, and displaying chat content.
  */
 public class HelloController {
 
-    private final HelloModel model = new HelloModel();
 
+    private static final String HOST_NAME = System.getenv("HOST_NAME");
+
+    static {
+        if (HOST_NAME == null || HOST_NAME.isBlank()) {
+            throw new IllegalStateException(
+                    "Environment variable HOST_NAME must be set to the server URL."
+            );
+        }
+    }
+
+
+
+
+
+    /**
+     * The model instance that holds application data and business logic.
+     * Initializes connection to the specified Ntfy server.
+     */
+    private final HelloModel model = new HelloModel(new NtfyConnectionImpl(HOST_NAME));
+
+
+    /**
+     * The ListView component displaying the list of chat messages.
+     */
     @FXML
-    private Label messageLabel;
+    public ListView<NtfyMessageDto> chatListView;
 
+    /**
+     * The label displaying the current fixed topic being used.
+     */
+    @FXML
+    public Label topicLabel;
+
+    /**
+     * The label indicating the name of the file currently attached for sending.
+     */
+    @FXML
+    public Label attachedFileLabel;
+
+
+    /**
+     * The button used to send the message or the attached file.
+     */
+    @FXML
+    private Button sendButton;
+
+    @FXML
+    private TextField messageInput;
+
+    @FXML
+    private Button attachFile;
+
+
+    /**
+     * Initializes the controller. This method is called automatically by the FXML loader.
+     * It sets up bindings between the view components and the model and configures the chat list view.
+     */
     @FXML
     private void initialize() {
-        if (messageLabel != null) {
-            messageLabel.setText(model.getGreeting());
+        if (sendButton != null) {
+            sendButton.setText(model.getGreeting());
+
+            // Bindning: Knappen är inaktiverad ENDAST om BÅDE meddelandet är tomt OCH fil inte är bifogad
+            sendButton.disableProperty().bind(
+                    Bindings.createBooleanBinding(() -> {
+                                boolean isMessageEmpty = model.messageToSendProperty().get() == null ||
+                                        model.messageToSendProperty().get().trim().isEmpty();
+                                boolean isFileNotAttached = model.fileToSendProperty().get() == null;
+
+                                return isMessageEmpty && isFileNotAttached;
+                            },
+                            model.messageToSendProperty(),
+                            model.fileToSendProperty())
+            );
+        }
+
+        if (topicLabel != null) {
+            // Visar den fasta topicen
+            topicLabel.textProperty().bind(
+                    Bindings.concat("Fixed Topic: ", model.currentTopicProperty())
+            );
+        }
+
+        // Hanterar visning av bifogad fil
+        if (attachedFileLabel != null) {
+            model.fileToSendProperty().addListener((obs, oldFile, newFile) -> {
+                if (newFile != null) {
+                    attachedFileLabel.setText("Attached file: " + newFile.getName());
+                    attachedFileLabel.setStyle("-fx-font-style: italic;" +
+                            " -fx-font-size: 12px;" +
+                            " -fx-text-fill: #008000;");
+                } else {
+                    attachedFileLabel.setText("No file attached");
+                    attachedFileLabel.setStyle("-fx-font-style: italic; " +
+                            "-fx-font-size: 12px; " +
+                            "-fx-text-fill: #333;");
+                }
+            });
+            attachedFileLabel.setText("No file attached");
+        }
+
+        if (messageInput!=null){
+            messageInput.textProperty().bindBidirectional(model.messageToSendProperty());
+        }
+
+        if(chatListView!=null){
+            chatListView.setItems(model.getMessages());
+            // Använd den enkla CellFactoryn
+            chatListView.setCellFactory(param -> new SimpleMessageCell());
+        }
+    }
+
+    /**
+     * A simple custom ListCell implementation for the chatListView.
+     * It displays the message text or a placeholder for file uploads, and indicates if the message was sent locally.
+     */
+    private static class SimpleMessageCell extends ListCell<NtfyMessageDto> {
+
+        @Override
+        protected void updateItem(NtfyMessageDto item, boolean empty) {
+            super.updateItem(item, empty);
+
+            if (empty || item == null) {
+                setText(null);
+                setGraphic(null);
+                setStyle(null);
+            } else {
+                // Hämta meddelandet eller visa filstatus om meddelandet är tomt
+                String displayMessage = item.message() != null && !item.message().trim().isEmpty()
+                        ? item.message()
+                        : ("file".equals(item.event())) ? item.topic() + " Uploaded" : "";
+
+                // Lägg till prefix för att visa om det är skickat lokalt
+                String prefix = item.isLocal() ? "(Sent) " : "";
+
+                setText(prefix + displayMessage);
+                setGraphic(null);
+
+                // Mycket enkel stil utan bubblor/färger. Använd standard utseende.
+                setStyle(null);
+            }
+        }
+    }
+
+
+    /**
+     * Handles the action of the send button.
+     * If a file is attached, it calls the model to send the file; otherwise, it calls the model to send the text message.
+     */
+    @FXML
+    protected void sendMessage() {
+        if (model.fileToSendProperty().get() != null) {
+            // Om en fil är bifogad, skicka filen och rensa bilagan i modellen
+            model.sendFile();
+        } else {
+            // Annars, skicka textmeddelandet
+            model.sendMessage();
+        }
+
+        if (messageInput!=null){
+            messageInput.requestFocus();
+        }
+    }
+
+    /**
+     * Handles the action of the attach file button.
+     * Opens a FileChooser dialog and sets the selected file in the model.
+     */
+    @FXML
+    protected void attachFile() {
+        // Hämta scenen från en av kontrollerna
+
+        if (attachFile == null || attachFile.getScene() == null || attachFile.getScene().getWindow() == null) {
+            System.err.println("Cannot open file chooser: UI not ready.");
+            return;
+            }
+        Stage stage = (Stage) attachFile.getScene().getWindow();
+
+
+
+
+        FileChooser fileChooser = new FileChooser();
+        fileChooser.setTitle("Choose file to attach");
+
+        File selectedFile = fileChooser.showOpenDialog(stage);
+
+        if (selectedFile != null) {
+            model.setFileToSend(selectedFile);
         }
     }
-}
+}

src/main/java/com/example/HelloFX.java

@@ -1,5 +1,6 @@
 package com.example;
 
+
 import javafx.application.Application;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Parent;
@@ -10,6 +11,9 @@ public class HelloFX extends Application {
 
     @Override
     public void start(Stage stage) throws Exception {
+
+
+
         FXMLLoader fxmlLoader = new FXMLLoader(HelloFX.class.getResource("hello-view.fxml"));
         Parent root = fxmlLoader.load();
         Scene scene = new Scene(root, 640, 480);