(function () {

    Metamaps.currentPage = "";

    var Router = Backbone.Router.extend({
        routes: {
            "": "home", // #home
            "explore/:section": "explore", // #explore/active
            "explore/:section/:id": "explore", // #explore/mapper/1234
            "maps/:id": "maps" // #maps/7
        },
        home: function () {
            clearTimeout(Metamaps.routerTimeoutId);

            if (Metamaps.Active.Mapper) document.title = 'Explore Active Maps | Metamaps';
            else document.title = 'Home | Metamaps';

            Metamaps.currentSection = "";
            Metamaps.currentPage = "";
            $('.wrapper').removeClass('mapPage topicPage');

            var classes = Metamaps.Active.Mapper ? "homePage explorePage" : "homePage";
            $('.wrapper').addClass(classes);

            var navigate = function() {
                Metamaps.routerTimeoutId = setTimeout(function() {
                    Metamaps.Router.navigate("");
                }, 300);
            };
            // all this only for the logged in home page
            if (Metamaps.Active.Mapper) {
                
                Metamaps.Famous.yield.hide();
                
                Metamaps.Famous.explore.set('active');
                Metamaps.Famous.maps.resetScroll(); // sets the scroll back to the top
                Metamaps.Famous.explore.show();

                Metamaps.Famous.maps.show();

                Metamaps.GlobalUI.Search.open();
                Metamaps.GlobalUI.Search.lock();

                Metamaps.Views.exploreMaps.setCollection( Metamaps.Maps.Active );
                if (Metamaps.Maps.Active.length === 0) {
                    Metamaps.Maps.Active.getMaps(navigate); // this will trigger an explore maps render
                }
                else {
                    Metamaps.Views.exploreMaps.render(navigate);
                }
            }
            // logged out home page
            else {
                
                Metamaps.Famous.yield.show();
                
                Metamaps.Famous.explore.hide();

                Metamaps.GlobalUI.Search.unlock();
                Metamaps.GlobalUI.Search.close(0, true);

                Metamaps.Famous.maps.hide();
                Metamaps.routerTimeoutId = setTimeout(navigate, 500);
            }

            Metamaps.Famous.viz.hide();
            Metamaps.Map.end();
            Metamaps.Topic.end();
            Metamaps.Active.Map = null;
            Metamaps.Active.Topic = null;
        },
        explore: function (section, id) {
            clearTimeout(Metamaps.routerTimeoutId);

            // just capitalize the variable section
            // either 'featured', 'mapper', or 'active'
            var capitalize = section.charAt(0).toUpperCase() + section.slice(1);
            
            if (section === "featured" || section === "active") {
                document.title = 'Explore ' + capitalize + ' Maps | Metamaps';
            }
            else if (section === "mapper") {
                $.ajax({
                    url: "/users/" + id + ".json",
                    success: function (response) {
                        document.title = response.name + ' | Metamaps';
                    },
                    error: function () {
                        
                    }
                });
            }
            else if (section === "mine") {
                document.title = 'Explore My Maps | Metamaps';
            }

            $('.wrapper').removeClass('homePage mapPage topicPage');
            $('.wrapper').addClass('explorePage');
            
            Metamaps.currentSection = "explore";
            Metamaps.currentPage = section;

            // this will mean it's a mapper page being loaded
            if (id) {
                if (Metamaps.Maps.Mapper.mapperId !== id) {
                    // empty the collection if we are trying to load the maps 
                    // collection of a different mapper than we had previously
                    Metamaps.Maps.Mapper.reset();
                    Metamaps.Maps.Mapper.page = 1;
                }
                Metamaps.Maps.Mapper.mapperId = id;
            }

            Metamaps.Views.exploreMaps.setCollection( Metamaps.Maps[capitalize] );

            var navigate = function(){
                var path = "/explore/" + Metamaps.currentPage;

                // alter url if for mapper profile page
                if (Metamaps.currentPage == "mapper") {
                    path += "/" + Metamaps.Maps.Mapper.mapperId;
                }

                Metamaps.Router.navigate(path);
            };
            var navigateTimeout = function() {
                Metamaps.routerTimeoutId = setTimeout(navigate, 300);
            };
            if (Metamaps.Maps[capitalize].length === 0) {
                Metamaps.Loading.show();
                setTimeout(function(){
                    Metamaps.Maps[capitalize].getMaps(navigate); // this will trigger an explore maps render
                }, 300); // wait 300 milliseconds till the other animations are done to do the fetch 
            }
            else {
                if (id) {
                    Metamaps.Views.exploreMaps.fetchUserThenRender(navigateTimeout);
                }
                else {
                    Metamaps.Views.exploreMaps.render(navigateTimeout);
                }
            }

            Metamaps.GlobalUI.Search.open();
            Metamaps.GlobalUI.Search.lock();
            
            Metamaps.Famous.yield.hide();

            Metamaps.Famous.maps.resetScroll(); // sets the scroll back to the top
            Metamaps.Famous.maps.show();
            Metamaps.Famous.explore.set(section, id);
            Metamaps.Famous.explore.show();

            Metamaps.Famous.viz.hide();
            Metamaps.Map.end();
            Metamaps.Topic.end();
            Metamaps.Active.Map = null;
            Metamaps.Active.Topic = null;
        },
        maps: function (id) {
            clearTimeout(Metamaps.routerTimeoutId);

            document.title = 'Map ' + id + ' | Metamaps';
            
            Metamaps.currentSection = "map";
            Metamaps.currentPage = id;

            $('.wrapper').removeClass('homePage explorePage topicPage');
            $('.wrapper').addClass('mapPage');
            // another class will be added to wrapper if you 
            // can edit this map '.canEditMap'

            Metamaps.Famous.yield.hide();
            Metamaps.Famous.maps.hide();
            Metamaps.Famous.explore.hide();

            // clear the visualization, if there was one, before showing its div again
            if (Metamaps.Visualize.mGraph) {
                Metamaps.Visualize.mGraph.graph.empty();
                Metamaps.Visualize.mGraph.plot();
                Metamaps.JIT.centerMap(Metamaps.Visualize.mGraph.canvas);
            }
            Metamaps.Famous.viz.show();
            Metamaps.Topic.end();
            Metamaps.Active.Topic = null;

            Metamaps.GlobalUI.Search.unlock();
            Metamaps.GlobalUI.Search.close(0, true);

            Metamaps.Loading.show();
            Metamaps.Map.end();
            Metamaps.Map.launch(id);
        },
        topics: function (id) {
            clearTimeout(Metamaps.routerTimeoutId);
            
            document.title = 'Topic ' + id + ' | Metamaps';
            
            Metamaps.currentSection = "topic";
            Metamaps.currentPage = id;

            $('.wrapper').removeClass('homePage explorePage mapPage');
            $('.wrapper').addClass('topicPage');

            Metamaps.Famous.yield.hide();
            Metamaps.Famous.maps.hide();
            Metamaps.Famous.explore.hide();

            // clear the visualization, if there was one, before showing its div again
            if (Metamaps.Visualize.mGraph) {
                Metamaps.Visualize.mGraph.graph.empty();
                Metamaps.Visualize.mGraph.plot();
                Metamaps.JIT.centerMap(Metamaps.Visualize.mGraph.canvas);
            }
            Metamaps.Famous.viz.show();
            Metamaps.Map.end();
            Metamaps.Active.Map = null;

            Metamaps.GlobalUI.Search.unlock();
            Metamaps.GlobalUI.Search.close(0, true);

            Metamaps.Topic.end();
            Metamaps.Topic.launch(id);
        }
    });
    
    Metamaps.Router = new Router();


    Metamaps.Router.intercept = function (evt) {
        var segments;

        var href = {
            prop: $(this).prop("href"),
            attr: $(this).attr("href")
        };
        var root = location.protocol + "//" + location.host + Backbone.history.options.root;
        
        if (href.prop && href.prop === root) href.attr = "";
        
        if (href.prop && href.prop.slice(0, root.length) === root) {
            evt.preventDefault();

            segments = href.attr.split('/');
            segments.splice(0,1); // pop off the element created by the first /

            if (href.attr === "") Metamaps.Router.home();
            else {
                Metamaps.Router[segments[0]](segments[1], segments[2]);
            }
        }
    };

    Metamaps.Router.init = function () {
        Backbone.history.start({
            silent: true,
            pushState: true,
            root: '/'
        });
        $(document).on("click", "a:not([data-bypass])", Metamaps.Router.intercept);
    };
})();