Added backup button with native zip file creation.

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

@@ -21,8 +21,16 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 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.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
 
 import static com.andrewlalis.perfin.PerfinApp.router;
 
@@ -92,6 +100,9 @@ public class ProfilesViewController {
                 PerfinApp.instance.getHostServices().showDocument(Profile.getDir(profileName).toUri().toString());
             });
             buttonBox.getChildren().add(viewFilesButton);
+            Button backupButton = new Button("Backup");
+            backupButton.setOnAction(event -> makeBackup(profileName));
+            buttonBox.getChildren().add(backupButton);
             Button deleteButton = new Button("Delete");
             deleteButton.setOnAction(event -> deleteProfile(profileName));
             buttonBox.getChildren().add(deleteButton);
@@ -117,6 +128,38 @@ public class ProfilesViewController {
         }
     }
 
+    private void makeBackup(String name) {
+        log.info("Making backup of profile \"{}\".", name);
+        final Path profileDir = Profile.getDir(name);
+        LocalDateTime now = LocalDateTime.now();
+        Path backupFile = profileDir.resolve(String.format(
+                "backup_%04d-%02d-%02d_%02d-%02d-%02d.zip",
+                now.getYear(), now.getMonthValue(), now.getDayOfMonth(),
+                now.getHour(), now.getMinute(), now.getSecond()
+        ));
+        try {
+            ZipOutputStream out = new ZipOutputStream(Files.newOutputStream(backupFile));
+            Files.walkFileTree(profileDir, new SimpleFileVisitor<>() {
+                @Override
+                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
+                    Path relativeFile = profileDir.relativize(file);
+                    if (relativeFile.toString().startsWith("backup_") || relativeFile.toString().equalsIgnoreCase("database.trace.db")) {
+                        return FileVisitResult.CONTINUE;
+                    }
+                    out.putNextEntry(new ZipEntry(relativeFile.toString()));
+                    byte[] bytes = Files.readAllBytes(file);
+                    out.write(bytes, 0, bytes.length);
+                    out.closeEntry();
+                    return FileVisitResult.CONTINUE;
+                }
+            });
+            out.close();
+            Popups.message(profilesVBox, "A new backup was created at " + backupFile.toAbsolutePath());
+        } catch (IOException e) {
+            Popups.error(profilesVBox, e);
+        }
+    }
+
     private void deleteProfile(String name) {
         boolean confirmA = Popups.confirm(profilesVBox, "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) {

src/main/java/com/andrewlalis/perfin/view/component/module/SpendingCategoryChartModule.java

@@ -0,0 +1,16 @@
+package com.andrewlalis.perfin.view.component.module;
+
+import javafx.scene.chart.PieChart;
+import javafx.scene.layout.Pane;
+
+public class SpendingCategoryChartModule extends DashboardModule {
+    public SpendingCategoryChartModule(Pane parent) {
+        super(parent);
+        PieChart chart = new PieChart();
+    }
+
+    @Override
+    public void refreshContents() {
+
+    }
+}