implement Controller.java

src/main/java/workshop/Controller.java

@@ -1,41 +1,88 @@
 package workshop;
 
 import javafx.fxml.FXML;
+import javafx.scene.control.Alert;
+import javafx.scene.control.ButtonType;
 import javafx.scene.control.Label;
 import javafx.scene.control.Button;
 
 public class Controller {
+
+    @FXML private Label BasicPriceLabel;
+    @FXML private Label ProPriceLabel;
     @FXML private Label titleLabel;
     @FXML private Button themeToggle;
 
     private boolean isDark = true;
 
-    // TODO: (Optional:For Practice) Create initialize function and use it to set prices during runtime.
+    @FXML
+    private void initialize() {
+        BasicPriceLabel.setText("$12.99 / month");
+        ProPriceLabel.setText("$21.99 / month");
+    }
 
+    @FXML
+    private void updatePrice(Label label) {
+
+        String text = label.getText();
+
+        String[] parts = text.replace("$", "").split("/");
+
+        double price = Double.parseDouble(parts[0].trim());
+
+        price = price + 1;
+
+        label.setText("$" + price + " / month");
+    }
 
-    // TODO: (Optional:For Practice) Make the plan price go 1 dollar up each time user clicks on the shop button.
     @FXML
     private void buyBasic() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("Basic plan selected");
+        updatePrice(BasicPriceLabel);
     }
 
     @FXML
     private void buyPro() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("Pro plan selected");
+        updatePrice(ProPriceLabel);
     }
 
     @FXML
     private void buyEnterprise() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("Enterprise plan selected");
     }
 
     @FXML
     private void toggleTheme() {
-        // TODO: Toggle the isDark flag. If dark, switch to style.css and set button text to "Switch to Light Mode"
-        // TODO: If light, switch to light.css and set button text to "Switch to Dark Mode"
+
+        isDark = !isDark;
+
+        var scene = themeToggle.getScene();
+        scene.getStylesheets().clear();
+
+        if (isDark) {
+
+            var css = getClass().getResource("style.css");
+            if (css != null) {
+                scene.getStylesheets().add(css.toExternalForm());
+            }
+
+            themeToggle.setText("Switch to Light Mode");
+
+        } else {
+
+            var css = getClass().getResource("light.css");
+            if (css != null) {
+                scene.getStylesheets().add(css.toExternalForm());
+            }
+
+            themeToggle.setText("Switch to Dark Mode");
+        }
     }
 
     private void showAlert(String message) {
-        // TODO: Create a new Alert of type INFORMATION with the given message and display it
+
+        Alert alert = new Alert(Alert.AlertType.INFORMATION, message, new ButtonType("ok"));
+        alert.show();
     }
 }