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package examples;

import com.github.rcaller.util.Globals;
import com.github.rcaller.rstuff.RCaller;
import com.github.rcaller.rstuff.RCode;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 *
 * @author Mehmet Hakan Satman
 */
public class SampleGui extends JFrame implements ActionListener {

    private JTextArea textArea;
    private JButton button;
    private JTextField textField;
    private JTextArea textResult;
    private JTextArea inputStreamResult;
    private JTextArea errorStreamResult;


    public SampleGui() {
        super("RCaller Sample GUI");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setSize(640, 480);
        this.setLayout(null);

        Globals.detect_current_rscript();

        textArea = new JTextArea("myvar<-c(1,2,3,4,5)\nothervar<-runif(10,0,1)\ncat(\"Hello World!\")\nfor(i in 1:5){\nprint(i)\n}\n");
        textArea.setSize(350, 200);
        textArea.setLocation(10, 20);
        textArea.setBorder(new javax.swing.border.TitledBorder("R Code"));
        this.add(textArea);

        inputStreamResult = new JTextArea();
        inputStreamResult.setSize(350,70);
        inputStreamResult.setLocation(10, 230);
        inputStreamResult.setBorder(new javax.swing.border.TitledBorder("Output by R"));
        this.add(inputStreamResult);

        errorStreamResult = new JTextArea();
        errorStreamResult.setSize(350,70);
        errorStreamResult.setLocation(10, 310);
        errorStreamResult.setBorder(new javax.swing.border.TitledBorder("Error by R"));
        this.add(errorStreamResult);


        textField = new JTextField("othervar");
        textField.setSize(200, 50);
        textField.setLocation(380, 20);
        textField.setBorder(new javax.swing.border.TitledBorder("Handle this by Java"));
        this.add(textField);

        button = new JButton("Run R Code");
        button.setSize(150, 40);
        button.setLocation(380, 90);
        button.addActionListener(this);
        this.add(button);

        textResult = new JTextArea();
        textResult.setSize(200, 250);
        textResult.setLocation(380, 140);
        textResult.setBorder(new javax.swing.border.TitledBorder("Result as Java object"));
        this.add(textResult);


        this.setVisible(true);
    }

    public static void main(String[] args) {
        new SampleGui();
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("Run R Code")) {

            this.inputStreamResult.setText("");
            this.errorStreamResult.setText("");

            RCaller caller = RCaller.create();

            RCode code = RCode.create();
            code.addRCode(textArea.getText());


            try {
                caller.setRCode(code);
                caller.runAndReturnResult(textField.getText());
                double[] result = caller.getParser().getAsDoubleArray(textField.getText());
                StringBuilder buf = new StringBuilder();
                for (double aResult : result) {
                    buf.append(aResult).append("\n");
                }
                textResult.setText(buf.toString());
            } catch (Exception ex) {
                JOptionPane.showMessageDialog(this, ex.toString());
            }
        }
    }
}