$(function() {

    jQuery.extend({
        getScript: function(url, callback) {
            var d = $.Deferred();
            if (callback)
                d.done(callback);
            var head = document.getElementsByTagName("head")[0];
            var script = document.createElement("script");
            script.src = url;

            // Handle Script loading
            {
                var done = false;

                // Attach handlers for all browsers
                script.onload = script.onreadystatechange = function(){
                    if ( !done && (!this.readyState ||
                        this.readyState == "loaded" || this.readyState == "complete") ) {
                        done = true;
                        d.resolve();

                        // Handle memory leak in IE
                        script.onload = script.onreadystatechange = null;
                    }
                };
            }

            head.appendChild(script);

            // We handle everything using the script element injection
            return d;
        }
    });

    rft = {
        api: {
            post: function(action,args) {
                req = {
                    action:action, 
                    args:args
                }
                user = rft.auth.getUser();
                if ( user ) {
                    req.uid = user.uid
                }
                return $.ajax({
                    type: "POST",
                    url: "../server/api.php",
                    contentType: "application/json",
                    data: JSON.stringify(req)
                });
            },
            createObject: function(type, args) {
                var d = $.Deferred();
                rft.api.post("createObject",
                {
                    type: type,
                    values: args
                })
                .done(function(data, textStatus, jqXHR) {
                    d.resolve(data.uid);
                })
                .fail(function(jqXHR,textStatus,errorThrown){
                    d.reject(); 
                });
                return d.promise();
            },
            getObject: function(type, uid, success) {
                var d = $.Deferred();
                rft.api.post("getObject",
                {
                    type: type,
                    uid: uid
                })
                .done(function(data, textStatus, jqXHR) {
                    d.resolve(data.object);
                })
                .fail(function(jqXHR,textStatus,errorThrown){
                    d.reject(); 
                });
                return d.promise();
            },
            getObjects: function(type, predicates, success) {
                var d = $.Deferred();
                rft.api.post("getObjects",
                {
                    type: type,
                    predicates: predicates
                })
                .done(function(data, textStatus, jqXHR) {
                    d.resolve(data.objects);
                })
                .fail(function(jqXHR,textStatus,errorThrown){
                    d.reject(); 
                });
                return d.promise();
            },
            deleteObject: function(type, uid, success) {
                var d = $.Deferred();
                d.reject();
                return d.promise();

            }
        },
        auth: new (function() {
            var self = this;
            var currentUser = null;
            
            self.login = function(username,password,success,error) {
                var d = $.Deferred();
                rft.api.post("login",
                {
                    username:username,
                    password:password
                })
                .done(function(data, textStatus, jqXHR) {
                    currentUser = data;
                    d.resolve(data);
                })
                .fail(function(jqXHR,textStatus,errorThrown){
                    d.reject(); 
                });
                return d.promise();
            };
            
            self.register = function(username,password,success,error) {
                var d = $.Deferred();
                rft.api.post("register",
                {
                    username:username,
                    password:password
                })
                .done(function(data, textStatus, jqXHR) {
                    currentUser = data;
                    d.resolve(data);
                })
                .fail(function(jqXHR,textStatus,errorThrown){
                    d.reject(); 
                });
                return d.promise();
            };
            
            self.getUser = function(){
                return currentUser;
            };
        })(),
        content: new (function() {
            var self = this;
            var current = "";
            
            function init() {
                $(window).bind( 'hashchange', function(e){
                    var url = $.bbq.getState("content");
                    self.goTo(url);
                });
            }
            
            self.initial = function(location) {
                if ( current ) {
                    self.goTo(location);
                }
                var url = $.bbq.getState("content");
                self.goTo(url || location);
            }
            
            self.goTo = function(location) {
                if ( current == location ) {
                    return $.when();
                }
                current = location;
                var d = $.Deferred();
                $.get("pages/"+location+"/"+location+".html")
                .fail(function(){
                    $("#content").html("Page "+location+" not found.");
                    d.reject();
                })
                .always(function(){
                    $.bbq.pushState({
                        "content": location
                    });
                })
                .pipe(function(html){
                    $("#content").html(html);
                    return $.getScript("pages/"+location+"/"+location+".js")
                })
                .done(function(){
                    d.resolve(); 
                })
                .fail(function(){
                    d.reject(); 
                })
                return d;
            }
            
            init();
        })()
    };

    $.getScript("widgets/sequencer/sequencer.js");

});