Persist station list across sessions

src/main/java/name/nathanmcrae/NumbersStationController.java

@@ -4,6 +4,9 @@ import com.fasterxml.jackson.dataformat.xml.XmlMapper;
 import java.io.File;
 import java.io.IOException;
 import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ResourceBundle;
 import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
@@ -85,12 +88,7 @@ public class NumbersStationController implements Initializable {
                     }
                     settings.setSelectedStationName(selectedStationName.get());
 
-                    XmlMapper xmlMapper = new XmlMapper();
+                    settings.save();
-                    try {
-                        xmlMapper.writeValue(new File("setting-test.xml"), settings);
-                    } catch (IOException e) {
-                        e.printStackTrace();
-                    }
                 });
             } catch (Exception e) {
                 e.printStackTrace();
@@ -101,9 +99,29 @@ public class NumbersStationController implements Initializable {
     }
 
     private void loadSettings() throws IOException {
-        File file = new File("setting-test.xml");
         XmlMapper xmlMapper = new XmlMapper();
-        settings = xmlMapper.readValue(file, NumbersStationSettings.class);
+        String userHome = System.getProperty("user.home");
+        Path directoryPath = Paths.get(userHome, ".numbers-station");
+        Path filePath = directoryPath.resolve("settings.xml");
+        try {
+
+            // Create the directory if it doesn't exist
+            if (!Files.exists(directoryPath)) {
+                Files.createDirectories(directoryPath);
+            }
+
+            if (!Files.exists(filePath)) {
+                settings = new NumbersStationSettings();
+
+                xmlMapper.writeValue(new File(filePath.toString()), settings);
+            } else {
+                settings = xmlMapper.readValue(new File(filePath.toString()), NumbersStationSettings.class);
+            }
+        } catch (IOException e) {
+            // Print the contents of filePath
+            System.out.println("File contents: " + Files.readString(filePath));
+            e.printStackTrace();
+        }
     }
 
     @Override

src/main/java/name/nathanmcrae/NumbersStationSelectionController.java

@@ -1,5 +1,6 @@
 package name.nathanmcrae;
 
+import javafx.collections.ListChangeListener;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
@@ -10,11 +11,12 @@ import javafx.event.ActionEvent;
 import javafx.event.Event;
 import javafx.scene.Node;
 import javafx.stage.Stage;
-
 import java.util.Optional;
 
 public class NumbersStationSelectionController {
 
+    private NumbersStationSettings settings;
+
     @FXML
     private ListView<StationSettings> stationListView;
 
@@ -23,6 +25,8 @@ public class NumbersStationSelectionController {
     public NumbersStationSelectionController() {
         // Initialize the list with an empty list
         stationList = FXCollections.observableArrayList();
+        // Add listener to the stationList
+        stationList.addListener((ListChangeListener<StationSettings>) change -> onStationListChanged(change));
     }
 
     @FXML
@@ -41,8 +45,8 @@ public class NumbersStationSelectionController {
         });
     }
 
-    public void setSettings(NumbersStationSettings settings) {
+    public void setSettings(NumbersStationSettings newSettings) {
-        // Populate the list with stations from settings
+        settings = newSettings;
         stationList.addAll(settings.getStations());
         stationListView.setItems(stationList);
     }
@@ -59,8 +63,7 @@ public class NumbersStationSelectionController {
         Optional<String> result = dialog.showAndWait();
         result.ifPresent(stationName -> {
             // Add the new station to the list
-            StationSettings newStation = new StationSettings();
+            StationSettings newStation = new StationSettings(stationName);
-            newStation.setName(stationName);
             stationList.add(newStation);
         });
     }
@@ -86,4 +89,22 @@ public class NumbersStationSelectionController {
         }
         stage.close();
     }
+
+    private void onStationListChanged(ListChangeListener.Change<? extends StationSettings> change) {
+        while (change.next()) {
+            if (change.wasAdded()) {
+                for (StationSettings addedStation : change.getAddedSubList()) {
+                    System.out.println("Added: " + addedStation.getName());
+                }
+            }
+            if (change.wasRemoved()) {
+                for (StationSettings removedStation : change.getRemoved()) {
+                    System.out.println("Removed: " + removedStation.getName());
+                }
+            }
+        }
+        settings.getStations().clear();
+        settings.getStations().addAll(stationList);
+        settings.save();
+    }
 }

src/main/java/name/nathanmcrae/NumbersStationSettings.java

@@ -1,5 +1,11 @@
 package name.nathanmcrae;
 
+import com.fasterxml.jackson.dataformat.xml.XmlMapper;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 
 public class NumbersStationSettings {
@@ -10,6 +16,11 @@ public class NumbersStationSettings {
 
     private ArrayList<StationSettings> stations;
 
+    public NumbersStationSettings() {
+        stations = new ArrayList<>();
+        stations.add(new StationSettings("Station 1"));
+    }
+
     public ArrayList<StationSettings> getStations() {
         return stations;
     }
@@ -37,4 +48,22 @@ public class NumbersStationSettings {
     public void setSelectedStationName(String selectedStationName) {
         this.selectedStationName = selectedStationName;
     }
+
+    public void save() {
+        XmlMapper xmlMapper = new XmlMapper();
+        try {
+            String userHome = System.getProperty("user.home");
+            Path directoryPath = Paths.get(userHome, ".numbers-station");
+            Path filePath = directoryPath.resolve("settings.xml");
+
+            // Create the directory if it doesn't exist
+            if (!Files.exists(directoryPath)) {
+                Files.createDirectories(directoryPath);
+            }
+
+            xmlMapper.writeValue(new File(filePath.toString()), this);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
 }

src/main/java/name/nathanmcrae/StationSettings.java

@@ -5,6 +5,12 @@ public class StationSettings {
     private int digitsPerGroup;
     private int messageLength;
 
+    public StationSettings() { }
+
+    public StationSettings(String newName) {
+        name = newName;
+    }
+
     public String getName() {
         return name;
     }