package ConvertorValutar;

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.lang.StrictMath;
import java.math.BigInteger;

public class View extends JFrame {
	private String[] optiuni = { "EUR - European Euro", "USD - American Dollar", "GBP - Great Britain Pound" };
	private JComboBox options = new JComboBox(optiuni);
	private JTextField userInput = new JTextField(5);
	private JTextField output = new JTextField(5);
	private JButton convert = new JButton("Convert");
	private JButton clear = new JButton("Clear");
	private Model m_model;

	public View(Model model) {
		m_model = model;
		model.setValue(Model.INITIAL_VALUE);

		output.setText(model.getValue());
		output.setEditable(false);

		JPanel content = new JPanel();
		content.setLayout(new FlowLayout());
		content.add(options);
		content.add(new JLabel("Input"));
		content.add(userInput);
		content.add(convert);
		content.add(new JLabel("Output"));
		content.add(output);
		content.add(clear);
		convert.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				try {
					String input = "";
					input = userInput.getText();

					if ((options.getSelectedItem().toString()).equals("EUR - European Euro")) {
						model.currencyConversionEuro(input);
					} else {
						if ((options.getSelectedItem().toString()).equals("USD - American Dollar")) {
							model.currencyConversionUSD(input);
						} else {
							if ((options.getSelectedItem().toString()).equals("GBP - Great Britain Pound")) {
								model.currencyConversionGBP(input);
							}
						}
					}

					setTotal(model.getValue());
				} catch (NumberFormatException nformat) {
					showError("Eroare. A crapat");
				}
			}
		});

		clear.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				try {
					reset();
					model.reset();
				} catch (NumberFormatException nformat) {
					showError("Salut");
				}
			}
		});

		this.setContentPane(content);
		this.pack();
		this.setTitle("Convertor Valutar");
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}

	public void reset() {
		output.setText(Model.INITIAL_VALUE);
	}

	public String getUserInput() {
		return userInput.getText();
	}

	public void setTotal(String newTotal) {
		output.setText(newTotal);
	}

	public void showError(String errMsg) {
		JOptionPane.showMessageDialog(this, errMsg);
	}
}