Added profiles selector and logic for changing the selected profile.

src/main/java/com/andrewlalis/perfin/PerfinApp.java

@@ -35,7 +35,7 @@ public class PerfinApp extends Application {
                 PerfinApp::defineRoutes,
                 PerfinApp::initAppDir,
                 c -> initMainScreen(stage, c),
-                PerfinApp::loadProfile
+                PerfinApp::loadLastUsedProfile
         ));
         splashScreen.showAndWait();
         if (splashScreen.isStartupSuccessful()) {
@@ -43,7 +43,7 @@ public class PerfinApp extends Application {
         }
     }
 
-    private void initMainScreen(Stage stage, Consumer<String> msgConsumer) throws Exception {
+    private void initMainScreen(Stage stage, Consumer<String> msgConsumer) {
         msgConsumer.accept("Initializing main screen.");
         Platform.runLater(() -> {
             stage.hide();
@@ -57,7 +57,7 @@ public class PerfinApp extends Application {
         router.map(route, PerfinApp.class.getResource(resource));
     }
 
-    private static void defineRoutes(Consumer<String> msgConsumer) throws Exception {
+    private static void defineRoutes(Consumer<String> msgConsumer) {
         msgConsumer.accept("Initializing application views.");
         Platform.runLater(() -> {
             mapResourceRoute("accounts", "/accounts-view.fxml");
@@ -80,7 +80,7 @@ public class PerfinApp extends Application {
         }
     }
 
-    private static void loadProfile(Consumer<String> msgConsumer) throws Exception {
+    private static void loadLastUsedProfile(Consumer<String> msgConsumer) throws Exception {
         msgConsumer.accept("Loading the most recent profile.");
         Profile.loadLast();
     }

src/main/java/com/andrewlalis/perfin/control/MainViewController.java

@@ -2,6 +2,7 @@ package com.andrewlalis.perfin.control;
 
 import com.andrewlalis.javafx_scene_router.AnchorPaneRouterView;
 import com.andrewlalis.perfin.view.BindingUtil;
+import com.andrewlalis.perfin.view.ProfilesStage;
 import javafx.fxml.FXML;
 import javafx.scene.control.Label;
 import javafx.scene.layout.BorderPane;
@@ -10,13 +11,10 @@ import javafx.scene.layout.HBox;
 import static com.andrewlalis.perfin.PerfinApp.router;
 
 public class MainViewController {
-    @FXML
+    @FXML public BorderPane mainContainer;
-    public BorderPane mainContainer;
+    @FXML public HBox breadcrumbHBox;
-    @FXML
-    public HBox breadcrumbHBox;
 
-    @FXML
+    @FXML public void initialize() {
-    public void initialize() {
         AnchorPaneRouterView routerView = (AnchorPaneRouterView) router.getView();
         mainContainer.setCenter(routerView.getAnchorPane());
 
@@ -36,25 +34,25 @@ public class MainViewController {
         router.navigate("accounts");
     }
 
-    @FXML
+    @FXML public void goBack() {
-    public void goBack() {
         router.navigateBack();
     }
 
-    @FXML
+    @FXML public void goForward() {
-    public void goForward() {
         router.navigateForward();
     }
 
-    @FXML
+    @FXML public void goToAccounts() {
-    public void goToAccounts() {
         router.getHistory().clear();
         router.navigate("accounts");
     }
 
-    @FXML
+    @FXML public void goToTransactions() {
-    public void goToTransactions() {
         router.getHistory().clear();
         router.navigate("transactions");
     }
+
+    @FXML public void viewProfiles() {
+        ProfilesStage.open(mainContainer.getScene().getWindow());
+    }
 }

src/main/java/com/andrewlalis/perfin/control/Popups.java

@@ -11,4 +11,17 @@ public class Popups {
         var result = alert.showAndWait();
         return result.isPresent() && result.get() == ButtonType.OK;
     }
+
+    public static void message(String text) {
+        Alert alert = new Alert(Alert.AlertType.NONE, text);
+        alert.initModality(Modality.APPLICATION_MODAL);
+        alert.getButtonTypes().setAll(ButtonType.OK);
+        alert.showAndWait();
+    }
+
+    public static void error(String text) {
+        Alert alert = new Alert(Alert.AlertType.WARNING, text);
+        alert.initModality(Modality.APPLICATION_MODAL);
+        alert.showAndWait();
+    }
 }

src/main/java/com/andrewlalis/perfin/control/ProfilesViewController.java

@@ -0,0 +1,147 @@
+package com.andrewlalis.perfin.control;
+
+import com.andrewlalis.perfin.data.FileUtil;
+import com.andrewlalis.perfin.model.Profile;
+import com.andrewlalis.perfin.view.ProfilesStage;
+import javafx.beans.binding.BooleanExpression;
+import javafx.beans.property.BooleanProperty;
+import javafx.fxml.FXML;
+import javafx.scene.Node;
+import javafx.scene.control.Button;
+import javafx.scene.control.Label;
+import javafx.scene.control.TextField;
+import javafx.scene.layout.AnchorPane;
+import javafx.scene.layout.HBox;
+import javafx.scene.layout.VBox;
+import javafx.scene.text.Text;
+import javafx.scene.text.TextFlow;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import static com.andrewlalis.perfin.PerfinApp.router;
+
+public class ProfilesViewController {
+    @FXML public VBox profilesVBox;
+    @FXML public TextField newProfileNameField;
+    @FXML public Text newProfileNameErrorLabel;
+    @FXML public Button addProfileButton;
+
+    @FXML public void initialize() {
+        BooleanExpression newProfileNameValid = BooleanProperty.booleanExpression(newProfileNameField.textProperty()
+                .map(text -> (
+                        text != null &&
+                        !text.isBlank() &&
+                        Profile.validateName(text) &&
+                        !Profile.getAvailableProfiles().contains(text)
+                )));
+        newProfileNameErrorLabel.managedProperty().bind(newProfileNameErrorLabel.visibleProperty());
+        newProfileNameErrorLabel.visibleProperty().bind(newProfileNameValid.not().and(newProfileNameField.textProperty().isNotEmpty()));
+        newProfileNameErrorLabel.wrappingWidthProperty().bind(newProfileNameField.widthProperty());
+        addProfileButton.disableProperty().bind(newProfileNameValid.not());
+
+        refreshAvailableProfiles();
+    }
+
+    @FXML public void addProfile() {
+        String name = newProfileNameField.getText();
+        boolean valid = Profile.validateName(name);
+        if (valid && !Profile.getAvailableProfiles().contains(name)) {
+            boolean confirm = Popups.confirm("Are you sure you want to add a new profile named \"" + name + "\"?");
+            if (confirm) {
+                if (openProfile(name, false)) {
+                    Popups.message("Created new profile \"" + name + "\" and loaded it.");
+                }
+                newProfileNameField.clear();
+            }
+        }
+    }
+
+    private void refreshAvailableProfiles() {
+        List<String> profileNames = Profile.getAvailableProfiles();
+        String currentProfile = Profile.getCurrent() == null ? null : Profile.getCurrent().getName();
+        List<Node> nodes = new ArrayList<>(profileNames.size());
+        for (String profileName : profileNames) {
+            boolean isCurrent = profileName.equals(currentProfile);
+            AnchorPane profilePane = new AnchorPane();
+            profilePane.setStyle("""
+                    -fx-border-color: lightgray;
+                    -fx-border-radius: 5px;
+                    -fx-padding: 5px;
+                    """);
+
+            Text nameTextElement = new Text(profileName);
+            nameTextElement.setStyle("-fx-font-size: large;");
+            TextFlow nameLabel = new TextFlow(nameTextElement);
+            if (isCurrent) {
+                nameTextElement.setStyle("-fx-font-size: large; -fx-font-weight: bold;");
+                Text currentProfileIndicator = new Text(" Currently Selected Profile");
+                currentProfileIndicator.setStyle("""
+                        -fx-font-size: small;
+                        -fx-fill: grey;
+                        """);
+                nameLabel.getChildren().add(currentProfileIndicator);
+            }
+            AnchorPane.setLeftAnchor(nameLabel, 0.0);
+            AnchorPane.setTopAnchor(nameLabel, 0.0);
+            AnchorPane.setBottomAnchor(nameLabel, 0.0);
+
+            HBox buttonBox = new HBox();
+            AnchorPane.setRightAnchor(buttonBox, 0.0);
+            AnchorPane.setTopAnchor(buttonBox, 0.0);
+            AnchorPane.setBottomAnchor(buttonBox, 0.0);
+            buttonBox.getStyleClass().addAll("std-spacing");
+            Button openButton = new Button("Open");
+            openButton.setOnAction(event -> openProfile(profileName, false));
+            openButton.setDisable(isCurrent);
+            buttonBox.getChildren().add(openButton);
+            Button deleteButton = new Button("Delete");
+            deleteButton.setOnAction(event -> deleteProfile(profileName));
+            buttonBox.getChildren().add(deleteButton);
+
+            profilePane.getChildren().setAll(nameLabel, buttonBox);
+            nodes.add(profilePane);
+        }
+        profilesVBox.getChildren().setAll(nodes);
+    }
+
+    private boolean openProfile(String name, boolean showPopup) {
+        System.out.println("Opening profile: " + name);
+        try {
+            Profile.load(name);
+            ProfilesStage.closeView();
+            router.getHistory().clear();
+            router.navigate("accounts");
+            if (showPopup) Popups.message("The profile \"" + name + "\" has been loaded.");
+            return true;
+        } catch (IOException e) {
+            e.printStackTrace(System.err);
+            Popups.error("Failed to load profile: " + e.getMessage());
+            return false;
+        }
+    }
+
+    private void deleteProfile(String name) {
+        boolean confirmA = Popups.confirm("Are you sure you want to delete the profile \"" + name + "\"? This will permanently delete ALL accounts, transactions, files, and other data for this profile, and it cannot be recovered.");
+        if (confirmA) {
+            boolean confirmB = Popups.confirm("Press \"OK\" to confirm that you really want to delete the profile \"" + name + "\". There's no going back.");
+            if (confirmB) {
+                try {
+                    FileUtil.deleteDirRecursive(Profile.getDir(name));
+                    // Reset the app's "last profile" to the default if it was the deleted profile.
+                    if (Profile.getLastProfile().equals(name)) {
+                        Profile.saveLastProfile("default");
+                    }
+                    // If the current profile was deleted, switch to the default.
+                    if (Profile.getCurrent() != null && Profile.getCurrent().getName().equals(name)) {
+                        openProfile("default", true);
+                    }
+                    refreshAvailableProfiles();
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+        }
+    }
+}

src/main/java/com/andrewlalis/perfin/data/FileUtil.java

@@ -1,5 +1,11 @@
 package com.andrewlalis.perfin.data;
 
+import java.io.IOException;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -22,4 +28,20 @@ public class FileUtil {
         MIMETYPES.put(".bmp", "image/bmp");
         MIMETYPES.put(".tiff", "image/tiff");
     }
+
+    public static void deleteDirRecursive(Path startDir) throws IOException {
+        Files.walkFileTree(startDir, new SimpleFileVisitor<>() {
+            @Override
+            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
+                Files.delete(file);
+                return FileVisitResult.CONTINUE;
+            }
+
+            @Override
+            public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
+                Files.delete(dir);
+                return FileVisitResult.CONTINUE;
+            }
+        });
+    }
 }

src/main/java/com/andrewlalis/perfin/model/Profile.java

@@ -9,10 +9,7 @@ import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.sql.SQLException;
-import java.util.ArrayList;
+import java.util.*;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Properties;
 import java.util.function.Consumer;
 
 /**
@@ -86,6 +83,16 @@ public class Profile {
         }
     }
 
+    public static List<String> getAvailableProfiles() {
+        try (var files = Files.list(PerfinApp.APP_DIR)) {
+            return files.filter(Files::isDirectory)
+                    .map(path -> path.getFileName().toString())
+                    .sorted().toList();
+        } catch (IOException e) {
+            return Collections.emptyList();
+        }
+    }
+
     public static String getLastProfile() {
         Path lastProfileFile = PerfinApp.APP_DIR.resolve("last-profile.txt");
         if (Files.exists(lastProfileFile)) {
@@ -127,7 +134,6 @@ public class Profile {
         for (var c : profileLoadListeners) {
             c.accept(current);
         }
-        profileLoadListeners.clear();
     }
 
     private static void initProfileDir(String name) throws IOException {
@@ -181,6 +187,13 @@ public class Profile {
     }
 
     public static boolean validateName(String name) {
-        return name.matches("\\w+");
+        return name != null &&
+                name.matches("\\w+") &&
+                name.toLowerCase().equals(name);
+    }
+
+    @Override
+    public String toString() {
+        return name;
     }
 }

src/main/java/com/andrewlalis/perfin/view/ProfilesStage.java

@@ -0,0 +1,40 @@
+package com.andrewlalis.perfin.view;
+
+import com.andrewlalis.perfin.SceneUtil;
+import javafx.stage.Modality;
+import javafx.stage.Stage;
+import javafx.stage.Window;
+
+/**
+ * A stage that shows a popup for interacting with Perfin's collection of
+ * profiles.
+ */
+public class ProfilesStage extends Stage {
+    private static ProfilesStage instance;
+
+    public ProfilesStage() {
+        setTitle("Profiles");
+        setAlwaysOnTop(false);
+        initModality(Modality.APPLICATION_MODAL);
+        setScene(SceneUtil.load("/profiles-view.fxml"));
+    }
+
+    public static void open(Window owner) {
+        if (instance == null) {
+            instance = new ProfilesStage();
+            instance.initOwner(owner);
+            instance.show();
+            instance.setOnCloseRequest(event -> instance = null);
+        } else {
+            instance.requestFocus();
+            instance.toFront();
+        }
+    }
+
+    public static void closeView() {
+        if (instance != null) {
+            instance.close();
+            instance = null;
+        }
+    }
+}

src/main/resources/main-view.fxml

@@ -16,6 +16,7 @@
                 <Button text="Forward" onAction="#goForward"/>
                 <Button text="Accounts" onAction="#goToAccounts"/>
                 <Button text="Transactions" onAction="#goToTransactions"/>
+                <Button text="Profiles" onAction="#viewProfiles"/>
             </HBox>
             <HBox fx:id="breadcrumbHBox" styleClass="std-spacing,small-text"/>
         </VBox>

src/main/resources/profiles-view.fxml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.ScrollPane?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.layout.*?>
+<?import javafx.scene.text.*?>
+<BorderPane xmlns="http://javafx.com/javafx"
+            xmlns:fx="http://javafx.com/fxml"
+            fx:controller="com.andrewlalis.perfin.control.ProfilesViewController"
+            stylesheets="@style/base.css"
+            prefWidth="500"
+            prefHeight="400"
+>
+    <top>
+        <VBox styleClass="std-padding,std-spacing">
+            <TextFlow>
+                <Text text="In Perfin, all your accounts, transactions, files, and other financial data are stored in a single "/>
+                <Text text="profile" styleClass="bold-text"/>
+                <Text text=". By default, Perfin uses the "/>
+                <Text text="default" style="-fx-font-style: italic;"/>
+                <Text text=" profile, and this should be sufficient for most users, but you can also add new profiles if you'd like to track some finances separately."/>
+            </TextFlow>
+        </VBox>
+    </top>
+    <center>
+        <ScrollPane fitToWidth="true" fitToHeight="true">
+            <VBox fx:id="profilesVBox" styleClass="std-padding,spacing-extra"/>
+        </ScrollPane>
+    </center>
+    <bottom>
+        <BorderPane>
+            <left>
+                <VBox styleClass="std-padding">
+                    <Label text="Add New Profile"/>
+                </VBox>
+            </left>
+            <center>
+                <VBox styleClass="std-padding">
+                    <TextField fx:id="newProfileNameField" style="-fx-min-width: 50px; -fx-pref-width: 50px;"/>
+                    <Text
+                            fx:id="newProfileNameErrorLabel"
+                            styleClass="error-text"
+                            style="-fx-fill: red;"
+                            text="Invalid profile name. Profile names must only contain lowercase text."
+                    />
+                </VBox>
+            </center>
+            <right>
+                <VBox styleClass="std-padding">
+                    <Button text="Add" onAction="#addProfile" fx:id="addProfileButton"/>
+                </VBox>
+            </right>
+        </BorderPane>
+    </bottom>
+</BorderPane>