//=========================================================
// keep maintain the back or previous menu in stack
//=========================================================
function ParentStack()
{
    this.stac = new Array();
    this.pop = function () {
        return this.stac.pop();
    }
    this.push = function (item) {
        this.stac.push(item);
    }
}
var pstack = new ParentStack();

function getUserTokenBySkypeBotId(session) {
    var request = require('request');
    var string = Base64.encode(session.message.user.id);
    //session.send('1 token '+session.userData.profile.userToken);
    var url = 'http://example/api/ + string + '/Production';
    request(url, function (error, response, body)
    {
        if (!error && response.statusCode == 200) {
            var jsondata = parseJson(body);
            session.userData.profile.userToken = jsondata;
        } else {
            session.send(wrongMsg);
            //session.beginDialog('/menu');
        }
    });
}