/**
 *
 */
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;
    }
}
