package fsiap_ui;

import fsiap_logic.snell;
import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
import javax.swing.border.TitledBorder;

public class main_ui extends JFrame {

    private Container c = getContentPane();
    private JMenuBar menuBar;
    private JMenu menu;
    private JMenuItem menuItem;
    private CardLayout cardLayout;
    private JPanel cardLayers;
    private snell s;
    Line LinesRefraction = new Line(300, 300);

    public main_ui() {
        /**
         * Frame definitions*
         */
        super("FSIAP 2013/2014");
        c.removeAll();
        setSize(800, 600);
        setVisible(true);
        setLocationRelativeTo(null);
        setResizable(false);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        /**/

        c.setLayout(new BorderLayout());

        cardLayout = new CardLayout();
        cardLayers = new JPanel(cardLayout);
        cardLayers.setOpaque(false);

        menu();
        menuEntrada();
        menuSnell();

        fundoMain fundo = new fundoMain();
        fundo.setLayout(new GridLayout(1, 1));
        fundo.setOpaque(false);
        fundo.add(cardLayers);
        c.add(fundo, BorderLayout.CENTER);
    }

    private void menu() {

        menuBar = new JMenuBar();

        /**
         * Menu Modulos*
         */
        menu = new JMenu("Módulos");
        menu.setMnemonic('M');
        menuBar.add(menu);

        menuItem = new JMenuItem("Ecrã Principal", 'P');

        menuItem.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                cardLayout.show(cardLayers, "Entrada");
            }
        });
        menu.add(menuItem);

        menuItem = new JMenuItem("Lei de Snell", 'N');
        menuItem.setAccelerator(KeyStroke.getKeyStroke("ctrl N"));
        menuItem.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                cardLayout.show(cardLayers, "Snell");
            }
        });
        menu.add(menuItem);
        /**/

        /**
         * Menu Sobre*
         */
        menu = new JMenu("Sobre");
        menu.setMnemonic('S');
        menuBar.add(menu);

        menuItem = new JMenuItem("Autores", 'A');
        menuItem.setAccelerator(KeyStroke.getKeyStroke("ctrl A"));
        menuItem.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(main_ui.this, "Programa realizado por\n1090571 - Filipe Tedim\n", "Autores", JOptionPane.INFORMATION_MESSAGE);
            }
        });
        menu.add(menuItem);
        /**/

        /**
         * Menu Sair*
         */
        menu = new JMenu("Sair");
        menu.setMnemonic('S');
        menuBar.add(menu);

        menuItem = new JMenuItem("Sair", 'S');
        menuItem.setAccelerator(KeyStroke.getKeyStroke("ctrl S"));
        menuItem.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        });
        menu.add(menuItem);
        /**/

        c.add(menuBar, BorderLayout.NORTH);
    }

    private void menuEntrada() {

        JPanel pEntrada = new JPanel();
        pEntrada.setOpaque(false);
        cardLayers.add(pEntrada, "Entrada");

    }

    private void menuSnell() {

        // Criação painel
        JPanel pSnell = new JPanel();
        pSnell.setLayout(new BoxLayout(pSnell, BoxLayout.Y_AXIS));
        pSnell.setOpaque(true);
        pSnell.setBackground(Color.red);
        JPanel pInsertValues = new JPanel();
        pInsertValues.setPreferredSize(new Dimension(350, 65));
        pInsertValues.setMaximumSize(new Dimension(350, 65));
        pInsertValues.setOpaque(false);
        pInsertValues.setBorder(BorderFactory.createTitledBorder(null, "Lei de Snell - Inserir Valores", TitledBorder.LEFT, TitledBorder.TOP, null, Color.white));

        // Criação das text areas (n1=0  a1=1  n2=2  a2=3)
        final JTextArea inputText[] = new JTextArea[4];
        for (int i = 0; i < 4; i++) {
            inputText[i] = new JTextArea("");
            inputText[i].setPreferredSize(new Dimension(50, 20));
            pInsertValues.add(inputText[i]);
        }

        // Criação botaao calcular
        JButton buttonCalcular = new JButton("Calcular");
        buttonCalcular.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                // vector de booleans para saber quais text areas estao preenchidas e booleans para verificar quantos estao preenchidos
                boolean testBools[] = new boolean[4];
                boolean checkOnlyOneEmpty = true;
                boolean checkAllFieldsUsed = false;

                for (int i = 0; i < 4; i++) {
                    testBools[i] = false;
                }

                for (int i = 0; i < 4; i++) {
                    if (inputText[i].getText().isEmpty() || inputText[i].getText().equals("0")) {
                        inputText[i].setText("0");
                        testBools[i] = true;
                    }
                }

                for (int i = 0; i < 4; i++) {
                    if (testBools[i] == true) {
                        for (int j = 0; j < 4; j++) {
                            if (j != i && testBools[j] == true) {
                                checkOnlyOneEmpty = false;
                            }
                        }
                    }
                }

                if (testBools[0] == testBools[1] == testBools[2] == testBools[3] == false) {
                    checkAllFieldsUsed = true;
                }
                if (checkOnlyOneEmpty) {
                    if (checkAllFieldsUsed) {
                        s = new snell(Double.parseDouble(inputText[0].getText()),
                                Double.parseDouble(inputText[1].getText()),
                                Double.parseDouble(inputText[2].getText()),
                                Double.parseDouble(inputText[3].getText()));

                        if (testBools[0] == true) {
                            s.calcular_n1();
                            inputText[0].setText(Double.toString(s.getN1()));
                        }
                        if (testBools[1] == true) {
                            s.calcular_a1();
                            inputText[1].setText(Double.toString(s.getA1()));
                        }
                        if (testBools[2] == true) {
                            s.calcular_n2();
                            inputText[2].setText(Double.toString(s.getN2()));
                        }
                        if (testBools[3] == true) {
                            s.calcular_a2();
                            inputText[3].setText(Double.toString(s.getA2()));
                        }
                        // Desenha as linhas de refra e refle
                        LinesRefraction.addLine((int) (Math.tan(Math.toRadians(Double.parseDouble(inputText[1].getText()))) * 125), 25, 150, 150);
                    } else {
                        JOptionPane.showMessageDialog(rootPane, "Erro: Todos os campos foram preenchidos!");
                    }
                } else {
                    JOptionPane.showMessageDialog(rootPane, "Erro: Não há informação suficiente para calcular!");
                }
            }
        });
        pInsertValues.add(buttonCalcular);
        pSnell.add(pInsertValues);

        // Desenho dos eixos do graph
        LinesRefraction.addLine(150 , 25 , 150 , 275);
        LinesRefraction.addLine(25, 150, 275, 150);

        // Desenho indice/angulo incidencia


        pSnell.add(LinesRefraction);

        cardLayers.add(pSnell, "Snell");
    }

    private class fundoMain extends JPanel {

        @Override
        public void paintComponent(Graphics g) {
            super.paintComponent(g);
            ImageIcon i1 = new ImageIcon("fundoMain.png");
            Image i2 = i1.getImage().getScaledInstance(800, 560, Image.SCALE_SMOOTH);
            Image i3 = new ImageIcon(i2).getImage();

            g.drawImage(i3, 0, 0, this);
        }
    }
}