import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class Gui extends JFrame implements ActionListener {

    private static final long serialVersionUID = 1L;
    public static boolean conected = false;
    JTextField text = new JTextField("usuario");
    JPasswordField pass = new JPasswordField("password");

    public String getUsername() {
        return text.getText();
    }

    @SuppressWarnings("deprecation")
    public String getPassword() {
        return pass.getText();
    }

    public Gui() {
        super("Iniciar Sesion");
        JButton button = new JButton(new ImageIcon("data/images/connect.png"));
        JPanel panel = new JPanel();
        Container content = getContentPane();
        panel.add(button);
        content.add(text, BorderLayout.NORTH);
        content.add(pass, BorderLayout.CENTER);
        content.add(panel, BorderLayout.SOUTH);
        button.addActionListener(this);
        button.setText("Conectar");
        setBounds(400, 300, 220, 125);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }

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

    @Override
    public void actionPerformed(ActionEvent arg0) {
        try {
            File user = new File("data/users/"+getUsername()+".txt");
            if(!user.exists()) {
                msj("Usuario Incorrecto.", "Error", 1);
                return;
            }
            BufferedReader file = new BufferedReader(new FileReader("data/users/"+getUsername()+".txt"));
            if(!file.readLine().equals(getPassword())) {
                msj("Contraseña Incorrecta.", "Error", 1);
                return;
            }
            conected = true;
            msj(getUsername()+" ha iniciado sesion.", "Mensaje", 0);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void msj(String text, String title, int type) {
        JPanel panel = new JPanel();
        if(type == 0)
            JOptionPane.showMessageDialog(panel, text, title, JOptionPane.WARNING_MESSAGE);
        else
            JOptionPane.showMessageDialog(panel, text, title, JOptionPane.ERROR_MESSAGE);
    }

    public static void create(String user, String pass) {
        try {
            FileWriter fstream = new FileWriter("data/users/"+user+".txt");
            BufferedWriter out = new BufferedWriter(fstream);
            out.write(pass);
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}