package fileIO;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.stage.Stage;
import java.util.*;
import java.io.*;
import javafx.geometry.Pos;

public class FileInput extends Application {
    Button btnOK = new Button("Save");
    Label lblLName = new Label("Last Name:");
    Label lblFName = new Label("First Name:");
    Label lblCourse = new Label("Course: ");
    Label lblTerm = new Label("Term: ");
    TextField txtLName = new TextField();
    TextField txtFName = new TextField();
    TextField txtCourse = new TextField();
    TextField txtTerm = new TextField();
    TextArea txtaOutput = new TextArea();

    @Override
    public void start(Stage primaryStage) {

        btnOK.setOnAction(e -> {
            try
            {
                String appendString = "";
                PrintWriter fileOut = new PrintWriter(new FileOutputStream("src/fileIO/testdata.txt",true));
                appendString += txtLName.getText() + "\t" +
                        txtFName.getText() + "\t" +
                        txtCourse.getText() + "\t" +
                        txtTerm.getText() + "\n";

                fileOut.append(appendString);
                fileOut.close();

                fillOutput();
            }
            catch (Exception error)
            {
                txtaOutput.setText(error.toString());
            }


        });

        GridPane primaryPane = new GridPane();
        GridPane rightPane = new GridPane();
        GridPane containerPane = new GridPane();
        primaryPane.setAlignment(Pos.CENTER);

        primaryPane.add(lblLName, 0, 0);
        primaryPane.add(txtLName, 1, 0);
        primaryPane.add(lblFName, 0, 1);
        primaryPane.add(txtFName, 1, 1);
        primaryPane.add(lblCourse, 0, 2);
        primaryPane.add(txtCourse, 1, 2);
        primaryPane.add(lblTerm, 0, 3);
        primaryPane.add(txtTerm, 1, 3);
        primaryPane.add(btnOK,1,4);

        rightPane.add(txtaOutput, 0, 0);

        containerPane.setAlignment(Pos.CENTER);
        containerPane.add(primaryPane, 0, 0);
        containerPane.add(rightPane, 1, 0);

        Scene primaryScene = new Scene(containerPane,700,300);
        primaryStage.setTitle("File Input/Output");
        primaryStage.setScene(primaryScene);
        primaryStage.show();

        fillOutput();

    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

    public void fillOutput()
    {
        txtaOutput.setText("");
        try
        {
            Scanner fileIn = new Scanner(new FileInputStream("src/fileIO/testdata.txt"));
            while (fileIn.hasNext())
            {
                txtaOutput.appendText(fileIn.next() + " " +
                        fileIn.next() + " " +
                        fileIn.next() + " " +
                        fileIn.next() + "\n");

            }
            fileIn.close();
        }
        catch (Exception error)
        {
            System.out.println(error.toString());
        }
    }

}