package com.jotuntech.sketcher.client;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.util.Arrays;

import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;

public class JUserEntry extends JPanel {
	private JLabel nameLabel;
	private JPanel infoPanel;
	private JProgressBar volumeBar;
	private double slowVolume;
	private int[] delayLine;

	public JUserEntry(String name) {
		setLayout(new BorderLayout());

		setOpaque(false);

		nameLabel = new JLabel(name);
		add(nameLabel, BorderLayout.CENTER);

		infoPanel = new JPanel();
		infoPanel.setOpaque(false);
		infoPanel.setLayout(new BoxLayout(infoPanel, BoxLayout.X_AXIS));
		add(infoPanel, BorderLayout.EAST);

		volumeBar = new JProgressBar(0, 32768);
		volumeBar.setPreferredSize(new Dimension(64, 16));
		volumeBar.setOpaque(false);
		volumeBar.setValue(32768);
		volumeBar.setEnabled(false);
		volumeBar.setToolTipText(name + " is not on voice.");
		infoPanel.add(volumeBar);
	}

	public void setVolume(int volume) {
		setVolume(volume, 0);
	}

	public void setVolume(int volume, int delay) {
		if(volume <= 0) {
			volume = 1;
		}
		if(delayLine == null || delayLine.length <= delay) {
			delayLine = new int[delay + 1];
			Arrays.fill(delayLine, 1);
		}
		delayLine[delay] = volume;
		double newVolume = Math.log(delayLine[0]) * 32768d / Math.log(32768);

		for(int i = 0; i < delayLine.length - 1; i++) {
			delayLine[i] = delayLine[i + 1];
		}
		delayLine[delayLine.length - 1] = 1;

		slowVolume += (newVolume - slowVolume) * 0.333d;
		volumeBar.setValue((int) Math.round(slowVolume));
		if(!volumeBar.isEnabled()) {
			volumeBar.setEnabled(true);
			volumeBar.setToolTipText(nameLabel.getText() + " is on voice.");
		}
	}

	public void clearVoice() {
		volumeBar.setValue(32768);
		volumeBar.setEnabled(false);
		volumeBar.setToolTipText(nameLabel.getText() + " is not on voice.");
	}
}