/*
* Based on Ping Strophejs plugins (https://github.com/metajack/strophejs-plugins/tree/master/ping)
* This plugin is distributed under the terms of the MIT licence.
* Please see the LICENCE file for details.
*
* Copyright (c) Markus Kohlhase, 2010
* Refactored by Pavel Lang, 2011
*/
/**
* File: strophe.ping.js
* A Strophe plugin for XMPP Ping ( http://xmpp.org/extensions/xep-0199.html )
*/
/* 
* AMD Support added by Thierry
* 
*/

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define([
            "strophe"
        ], function (Strophe) {
            factory(
                Strophe.Strophe,
                Strophe.$build,
                Strophe.$iq ,
                Strophe.$msg,
                Strophe.$pres
            );
            return Strophe;
        });
    } else {
        // Browser globals
        factory(
            root.Strophe,
            root.$build,
            root.$iq ,
            root.$msg,
            root.$pres
        );
    }
}(this, function (Strophe, $build, $iq, $msg, $pres) {
Strophe.addConnectionPlugin('ping', {
        _c: null,

        // called by the Strophe.Connection constructor
        init: function(conn)
        {
                this._c = conn;
                Strophe.addNamespace('PING', "urn:xmpp:ping");
        },

        /**
         * Function: ping
         *
         * Parameters:
         * (String) to - The JID you want to ping
         * (Function) success - Callback function on success
         * (Function) error - Callback function on error
         * (Integer) timeout - Timeout in milliseconds
         */
        ping: function(jid, success, error, timeout)
        {
                var id = this._c.getUniqueId('ping');
                var iq = $iq({type: 'get', to: jid, id: id}).c(
                                'ping', {xmlns: Strophe.NS.PING});
                this._c.sendIQ(iq, success, error, timeout);
        },

        /**
         * Function: pong
         *
         * Parameters:
         * (Object) ping - The ping stanza from the server.
         */
        pong: function(ping)
        {
                var from = ping.getAttribute('from');
                var id = ping.getAttribute('id');
                var iq = $iq({type: 'result', to: from,id: id});
                this._c.sendIQ(iq);
        },

        /**
         * Function: addPingHandler
         *
         * Parameters:
         * (Function) handler - Ping handler
         *
         * Returns:
         * A reference to the handler that can be used to remove it.
         */
        addPingHandler: function(handler)
        {
                return this._c.addHandler(handler, Strophe.NS.PING, "iq", "get");
        }
});

}));