adding services in the AddServiceSceneController.java works

master_login.json

-[{"platform":"master","username":"syed","password":"MKyNsHSAOnLZrlaR+NfDMA==:M6yx0sHwB/ZbR4GjLQ3BICZXGAef2re2Np9UTbq4tEs="}]
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+[{"platform":"master","username":"syed","password":"i6ZciAQEoJyg6jJN5zggAQ==:pr8VZRZjxixRun/w6CGeZYhv9iG7epkxNlaSSd+8aUQ="},{"platform":"bobby","username":"hello","password":"11FNYAADZMJgkGqoylU8sQ==:khPaPmuaSCYqunc4xL2XLp0bJVKxwTfgsk0KTdna+Kw="}]
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src/main/java/com/cpsc329pm/AddServiceSceneController.java

@@ -6,11 +6,26 @@ import javafx.fxml.FXMLLoader;
 import javafx.scene.Node;
 import javafx.scene.Parent;
 import javafx.scene.Scene;
+import javafx.scene.control.Alert;
+import javafx.scene.control.TextField;
 import javafx.stage.Stage;
 import java.io.IOException;
 
 public class AddServiceSceneController {
 
+    @FXML
+    private TextField serviceField;
+
+    @FXML
+    private TextField usernameField;
+
+    @FXML
+    private TextField passwordField;
+
+    @FXML
+    private TextField confirmPasswordField;
+
+
     @FXML
     private void handleBack(ActionEvent event) {
         try {
@@ -34,4 +49,40 @@ public class AddServiceSceneController {
             e.printStackTrace();
         }
     }
+
+    @FXML
+    private void handleAdd(ActionEvent event) {
+        String platform = serviceField.getText();
+        String username = usernameField.getText();
+        String password = passwordField.getText();
+        String confirmUser = confirmPasswordField.getText();
+
+        if (password.equals(confirmUser)) {
+            try {
+                DataStorage ds = new DataStorage("master_login.json");
+                ds.addData(platform, username, password);
+                ds.saveToJSON();
+
+                Alert alert = new Alert(Alert.AlertType.INFORMATION);
+                alert.setTitle("Add Service");
+                alert.setHeaderText("Success");
+                alert.setContentText("Service added successfully.");
+                alert.showAndWait();
+
+                Parent root = FXMLLoader.load(getClass().getResource("MainPage.fxml"));
+                Stage stage = (Stage) ((Node) event.getSource()).getScene().getWindow();
+                stage.setScene(new Scene(root));
+                stage.show();
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        } else {
+            Alert alert = new Alert(Alert.AlertType.ERROR);
+            alert.setTitle("Add Service");
+            alert.setHeaderText("Error");
+            alert.setContentText("Password does not match Confirm Password.");
+            alert.showAndWait();
+        }
+    }
+
 }
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src/main/resources/com/cpsc329pm/AddServiceScene.fxml

@@ -49,10 +49,10 @@
             </Label>
          </children></AnchorPane>
       <Label layoutX="88.0" layoutY="187.0" text="Name of Service" />
-      <TextField layoutX="60.0" layoutY="210.0" prefHeight="26.0" prefWidth="472.0" promptText="Name" />
+      <TextField fx:id="serviceField" layoutX="60.0" layoutY="210.0" prefHeight="26.0" prefWidth="472.0" promptText="Name" />
       <Label layoutX="82.0" layoutY="350.0" prefHeight="17.0" prefWidth="179.0" text="Password" />
       <Label layoutX="86.0" layoutY="267.0" prefHeight="17.0" prefWidth="147.0" text="Username" />
-      <TextField layoutX="60.0" layoutY="287.0" prefHeight="26.0" prefWidth="472.0" promptText="Username" />
+      <TextField fx:id="usernameField" layoutX="60.0" layoutY="287.0" prefHeight="26.0" prefWidth="472.0" promptText="Username" />
       <Label layoutX="84.0" layoutY="431.0" prefHeight="17.0" prefWidth="179.0" text="Confirm Password" />
       <ImageView fitHeight="25.0" fitWidth="17.0" layoutX="65.0" layoutY="431.0" pickOnBounds="true" preserveRatio="true">
          <image>
@@ -74,9 +74,9 @@
             <Image url="@Gearss.png" />
          </image>
       </ImageView>
-      <PasswordField layoutX="60.0" layoutY="369.0" prefHeight="26.0" prefWidth="471.0" promptText="Password" />
-      <PasswordField layoutX="58.0" layoutY="451.0" prefHeight="26.0" prefWidth="471.0" promptText="Confirm Password" />
-      <Button layoutX="93.0" layoutY="538.0" mnemonicParsing="false" prefHeight="33.0" prefWidth="146.0" style="-fx-background-color: #3c8bff;" text="ADD">
+      <PasswordField fx:id="passwordField" layoutX="60.0" layoutY="369.0" prefHeight="26.0" prefWidth="471.0" promptText="Password" />
+      <PasswordField fx:id="confirmPasswordField" layoutX="58.0" layoutY="451.0" prefHeight="26.0" prefWidth="471.0" promptText="Confirm Password" />
+      <Button fx:id="addInfo" layoutX="93.0" layoutY="538.0" mnemonicParsing="false" onAction="#handleAdd" prefHeight="33.0" prefWidth="146.0" style="-fx-background-color: #3c8bff;" text="ADD">
          <textFill>
             <LinearGradient endX="1.0" endY="1.0">
                <stops>