/**
 *
 */
package com.beem.project.beem.utils;

import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smack.packet.Presence.Mode;

/**
 * Utility class to deal with status and presence value.
 * 
 * @author marseille
 */
public final class Status {

	/**
	 * Status of a disconnected contact.
	 */
	public static final int CONTACT_STATUS_DISCONNECT = 100;

	/**
	 * Status of a unavailable (long away) contact.
	 */
	public static final int CONTACT_STATUS_UNAVAILABLE = 200;

	/**
	 * Status of a away contact.
	 */
	public static final int CONTACT_STATUS_AWAY = 300;

	/**
	 * Status of a busy contact.
	 */
	public static final int CONTACT_STATUS_BUSY = 400;

	/**
	 * Status of a available contact.
	 */
	public static final int CONTACT_STATUS_AVAILABLE = 500;

	/**
	 * Status of a available for chat contact.
	 */
	public static final int CONTACT_STATUS_AVAILABLE_FOR_CHAT = 600;

	/**
	 * Default constructor masked.
	 */
	private Status() {
	}

	/**
	 * Get the smack presence mode for a status.
	 * 
	 * @param status
	 *            the status in beem
	 * @return the presence mode to use in presence packet or null if there is
	 *         no mode to use
	 */
	public static Presence.Mode getPresenceModeFromStatus(int status) {
		Presence.Mode res;
		switch (status) {
		case CONTACT_STATUS_AVAILABLE:
			res = Presence.Mode.available;
			break;
		case CONTACT_STATUS_AVAILABLE_FOR_CHAT:
			res = Presence.Mode.chat;
			break;
		case CONTACT_STATUS_AWAY:
			res = Presence.Mode.away;
			break;
		case CONTACT_STATUS_BUSY:
			res = Presence.Mode.dnd;
			break;
		case CONTACT_STATUS_UNAVAILABLE:
			res = Presence.Mode.xa;
			break;
		default:
			return null;
		}
		return res;
	}

	/**
	 * Get the status of from a presence packet.
	 * 
	 * @param presence
	 *            the presence containing status
	 * @return an int representing the status
	 */
	public static int getStatusFromPresence(Presence presence) {
		int res = Status.CONTACT_STATUS_DISCONNECT;
		if (presence.getType().equals(Presence.Type.unavailable)) {
			res = Status.CONTACT_STATUS_DISCONNECT;
		} else {
			Mode mode = presence.getMode();
			if (mode == null) {
				res = Status.CONTACT_STATUS_AVAILABLE;
			} else {
				switch (mode) {
				case available:
					res = Status.CONTACT_STATUS_AVAILABLE;
					break;
				case away:
					res = Status.CONTACT_STATUS_AWAY;
					break;
				case chat:
					res = Status.CONTACT_STATUS_AVAILABLE_FOR_CHAT;
					break;
				case dnd:
					res = Status.CONTACT_STATUS_BUSY;
					break;
				case xa:
					res = Status.CONTACT_STATUS_UNAVAILABLE;
					break;
				default:
					res = Status.CONTACT_STATUS_DISCONNECT;
					break;
				}
			}
		}
		return res;
	}

	/**
	 * Check if contact is online by his status.
	 * 
	 * @param status
	 *            contact status
	 * @return is obline
	 */
	public static boolean statusOnline(int status) {
		return (status != Status.CONTACT_STATUS_DISCONNECT && status != Status.CONTACT_STATUS_UNAVAILABLE);
	}

}
