package ui.view;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Image;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.JTextField;
import javax.swing.Timer;
import javax.swing.border.LineBorder;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.plaf.basic.BasicSliderUI;
import javax.swing.plaf.synth.SynthSliderUI;

import ui.controller.Control;
import ui.model.Model;

/**
 * This Class represents a Panel where the User can start and stop the
 * Simulation. He Can also reset the Simulation and click through every
 * Iteration.
 * 
 * @author Gruppe14
 */
public class TimePanel extends JPanel {

	private Model model;
	private Control controller;

	JLabel simSpeedLabel = new JLabel(Languages.getLanguage()[84]);
	private JTextField simSpeedText = new JTextField("1000");
	JSlider timeSlider = new JSlider(){
	    {
	    	// Make the slider jump to mouse position on left click
	        MouseListener[] listeners = getMouseListeners();
	        for (MouseListener l : listeners)
	            removeMouseListener(l); // remove UI-installed TrackListener
	        final BasicSliderUI ui = (BasicSliderUI) getUI();
	        BasicSliderUI.TrackListener tl = ui.new TrackListener() {
	            // this is where we jump to absolute value of click
	            @Override public void mouseClicked(MouseEvent e) {
	                Point p = e.getPoint();
	                int value = ui.valueForXPosition(p.x);

	                setValue(value);
	            }
	            // disable check that will invoke scrollDueToClickInTrack
	            @Override public boolean shouldScroll(int dir) {
	                return false;
	            }
	        };
	        addMouseListener(tl);
	    }
	};;
	private final JPanel timeBtnPanel = new JPanel();
	final JButton playBtn = new JButton();
	final JButton timeResetBtn = new JButton();
	final JButton timeForwardBtn = new JButton();
	final JButton timeBackwardBtn = new JButton();
	private Timer timer;
	private boolean running = false;

	private static final long serialVersionUID = 1L;

	/**
	 * Constructor.
	 * 
	 * @param mod
	 *            the Model
	 * @param cont
	 *            the Controller
	 */
	public TimePanel(Model mod, Control cont) {
		super();
		this.model = mod;
		this.controller = cont;

		// One Iteration
		timer = new Timer(0, new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent ae) {
				timeSlider.setValue(timeSlider.getValue() + 1);
				controller.setCurIteration(timeSlider.getValue());
				timer.setDelay(model.getTimerSpeed());
				if (timeSlider.getValue() == model.getIterations() - 1) {
					running = false;
					playBtn.setIcon(new ImageIcon(new ImageIcon(this.getClass().getResource("/Button_Images/play.png"))
							.getImage().getScaledInstance(30, 30, Image.SCALE_SMOOTH)));
					timer.stop();
				}
			}
		});

		// Time Slider. Panels and Buttons
		this.setLayout(new BorderLayout(0, 0));
		this.setBorder(null);
		// Slider
		timeSlider.setPaintTicks(true);
		timeSlider.setPaintLabels(true);
		timeSlider.setMinorTickSpacing(1);
		timeSlider.setMajorTickSpacing(5);
		timeSlider.setToolTipText(Languages.getLanguage()[93]);
		timeSlider.setMaximum(model.getIterations() - 1);
		timeSlider.setValue(0);
		timeSlider.addChangeListener(new ChangeListener() {
			@Override
			public void stateChanged(ChangeEvent e) {
				controller.setCurIteration(timeSlider.getValue());
			}
		});

		timeSlider.addMouseListener(new MouseAdapter() {
			@Override
			public void mousePressed(MouseEvent e) {
				controller.resetSimulation();
			}
		});
		
		timeSlider.addMouseMotionListener(new MouseAdapter() {
			@Override
			public void mouseDragged(MouseEvent e) {
				controller.resetSimulation();
			}
		});

		// Panel
		timeBtnPanel.setBorder(null);
		timeBtnPanel.setLayout(new FlowLayout(FlowLayout.CENTER));

		// Buttons
		playBtn.setToolTipText(Languages.getLanguage()[89]);

		playBtn.setContentAreaFilled(false);
		playBtn.setBorderPainted(false);
		playBtn.setBorder(null);
		playBtn.setIcon(new ImageIcon(new ImageIcon(this.getClass().getResource("/Button_Images/play.png")).getImage()
				.getScaledInstance(30, 30, Image.SCALE_SMOOTH)));
		playBtn.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				running = !running;
				if (running) {
					timer.start();
					timer.setDelay(model.getTimerSpeed());
					playBtn.setIcon(new ImageIcon(new ImageIcon(this.getClass().getResource("/Button_Images/pause.png"))
							.getImage().getScaledInstance(30, 30, Image.SCALE_SMOOTH)));
				} else {
					timer.stop();
					playBtn.setIcon(new ImageIcon(new ImageIcon(this.getClass().getResource("/Button_Images/play.png"))
							.getImage().getScaledInstance(30, 30, Image.SCALE_SMOOTH)));
				}
			}
		});
		timeResetBtn.setToolTipText(Languages.getLanguage()[90]);

		timeResetBtn.setContentAreaFilled(false);
		timeResetBtn.setBorder(null);
		timeResetBtn.setIcon(new ImageIcon(new ImageIcon(this.getClass().getResource("/Button_Images/reset.png"))
				.getImage().getScaledInstance(30, 30, Image.SCALE_SMOOTH)));
		timeResetBtn.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				timeSlider.setValue(timeSlider.getMinimum());
				controller.setCurIteration(timeSlider.getValue());
				// controller.calculateStateForCurrentTimeStep();
				controller.resetSimulation();
			}
		});
		timeForwardBtn.setToolTipText(Languages.getLanguage()[91]);


		timeForwardBtn.setContentAreaFilled(false);
		timeForwardBtn.setBorder(null);
		timeForwardBtn.setIcon(new ImageIcon(new ImageIcon(this.getClass().getResource("/Button_Images/forward.png"))
				.getImage().getScaledInstance(30, 30, Image.SCALE_SMOOTH)));
		timeForwardBtn.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				timeSlider.setValue(timeSlider.getValue() + 1);
				controller.setCurIteration(timeSlider.getValue());
			}
		});
		timeBackwardBtn.setToolTipText(Languages.getLanguage()[92]);

		timeBackwardBtn.setBorder(null);
		timeBackwardBtn.setIcon(new ImageIcon(new ImageIcon(this.getClass().getResource("/Button_Images/backward.png"))
				.getImage().getScaledInstance(30, 30, Image.SCALE_SMOOTH)));
		timeBackwardBtn.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				timeSlider.setValue(timeSlider.getValue() - 1);
				controller.setCurIteration(timeSlider.getValue());
			}
		});

		// timerSpeed
		simSpeedText.addCaretListener(new CaretListener() {
			@Override
			public void caretUpdate(CaretEvent e) {
				try {
					controller.setTimerSpeed(Integer.parseInt(simSpeedText.getText()));
				} catch (Exception ex) {
					// TODO: handle exception
				}

			}
		});

		timeBtnPanel.add(simSpeedLabel);
		timeBtnPanel.add(simSpeedText);
		timeBtnPanel.add(playBtn);
		timeBtnPanel.add(timeResetBtn);
		/*
		 * the backwards button isnt used anymore
		 */
		// timeBtnPanel.add(timeBackwardBtn);
		timeBtnPanel.add(timeForwardBtn);

		this.add(timeBtnPanel, BorderLayout.WEST);
		this.add(timeSlider);
	}

	/**
	 * Retunrs the TimeSlider.
	 * 
	 * @return the TimeSlider
	 */
	public JSlider getTimeSlider() {
		return timeSlider;
	}
}