define(['jquery', 'underscore', 'backbone', 'text!modules/item/itemViewTemplate.html', 'modules/base/baseView', 'classes/profile', 'jQueryPlugins'],
        function ($, _, Backbone, itemViewTemplate, BaseView, Profile) {

            var ItemView = BaseView.extend({
                collRicetta: null,
                collIngredienti: null,
                fetchedRicetta: false,
                fetchedIngredienti: false,
                IMG_WIDTH: 500,
                currentImg: 0,
                maxImages: 3,
                speed: 500,
                //initialize template
                template: _.template(itemViewTemplate),
                initialize: function (options) {
                    this.id = "ItemView";
                    var self = this;
                    ItemView.__super__.initialize.call(this);
                    this.collRicetta = options.collRicetta;
                    this.collIngredienti = options.collIngredienti;

                    this.collRicetta.fetch({success: function () {
                            self.fetchedRicetta = true;
                            self.render();
                        }});
                    this.collIngredienti.fetch({success: function () {
                            self.fetchedIngredienti = true;
                            self.render();
                        }});
                },
                isStayInPage: function () {
                    return false;
                },
                events: {
                    "click #favoriteBtn": "favBtn",
                    "click #backBtn": "backBtn"
                },
                backBtn: function (e) {
                    e.preventDefault();
                    window.history.back();
                },
                favBtn: function (e) {
                    e.preventDefault();
                    var self = this;
                    var ric = this.collRicetta.toJSON()[0];

                    if (!Profile.isConnected())
                    {
                        self.$el.find('#popupDialog').popup("open");
                        return;
                    }

                    Profile.addRicettaBloccoNote(ric.ricetta_id,
                            function (msg) {
                                var favBtn = self.$el.find('#favoriteBtn');
                                favBtn.addClass('ui-disabled');
                            }
                    );
                },
                onShowed: function(){
                    $('body').scrollTop(0);

                    this.$el.find("#Gallery").swipe({
                            triggerOnTouchEnd: true,
                            swipeStatus: this._swipeStatus,
                            allowPageScroll: "vertical",
                            threshold: 75
                        });
                },
                //render the content into div of view
                render: function () {
                    if (this.fetchedIngredienti && this.fetchedRicetta)
                    {
                        ItemView.__super__.render.call(this);
                        var self = this;

                        var ric = self.collRicetta.toJSON()[0];

                        this.maxImages = ric.foto.length;

                        Profile.existRicettaBloccoNote(ric.ricetta_id,
                                function (exist) {
                                    self.$el.append(self.template({
                                        ricetta: self.collRicetta.toJSON()[0],
                                        ingredienti: self.collIngredienti.toJSON()
                                    }));

                                    self.scrollPositions = [];
                                    self.$arrayContent = self.$el.find('div[data-role="content"]');
                                    self.$arrayNavBar = self.$el.find('div[data-role="navbar"] a');

                                    for (var i = self.$arrayContent.length - 1; i >= 0; i--) {
                                        self.scrollPositions.push(0);
                                    };

                                    var favBtn = self.$el.find('#favoriteBtn');
                                    if (exist > 0)
                                        favBtn.addClass('ui-disabled');

                                    self.$arrayNavBar.on("click", function (e) {
                                        e.preventDefault();
                                        var index = jQuery.inArray(this, self.$arrayNavBar);
                                        self.goToContent(index);
                                    });

                                    self.$arrayContent.on("swipeleft", function (e) {
                                        var index = jQuery.inArray(this, self.$arrayContent);
                                        self.goToContent(index + 1);
                                    });
                                    self.$arrayContent.on("swiperight", function (e) {
                                        var index = jQuery.inArray(this, self.$arrayContent);
                                        self.goToContent(index - 1);
                                    });
                                    self.trigger("renderCompleted:Item", self);
                                }
                        );

                        

                        //this.el is the root element of Backbone.View. By default, it is a div.
                        //$el is cached jQuery object for the view's element.
                        //append the compiled template into view div container

                        //return to enable chained calls
                        return this;
                    }
                },
                /**
                 * Catch each phase of the swipe.
                 * move : we drag the div
                 * cancel : we animate back to where we were
                 * end : we animate to the next image
                 */
                _swipeStatus: function (event, phase, direction, distance) {
                    //If we are moving before swipe, and we are going L or R in X mode, or U or D in Y mode then drag.
                    if (phase == "move" && (direction == "left" || direction == "right")) {
                        var duration = 0;
                        if (direction == "left") {
                            scrollImages((this.IMG_WIDTH * this.currentImg) + distance, duration);
                        } else if (direction == "right") {
                            scrollImages((this.IMG_WIDTH * this.currentImg) - distance, duration);
                        }
                    } else if (phase == "cancel") {
                        scrollImages(this.IMG_WIDTH * this.currentImg, this.speed);
                    } else if (phase == "end") {
                        if (direction == "right") {
                            self._previousImage();
                        } else if (direction == "left") {
                            self._nextImage();
                        }
                    }
                },
                _previousImage: function () {
                    this.currentImg = Math.max(this.currentImg - 1, 0);
                    scrollImages(this.IMG_WIDTH * this.currentImg, this.speed);
                },
                _nextImage: function() {
                    this.currentImg = Math.min(this.currentImg + 1, this.maxImages - 1);
                    this._scrollImages(this.IMG_WIDTH * this.currentImg, this.speed);
                },
                /**
                 * Manually update the position of the imgs on drag
                 */
                _scrollImages: function (distance, duration) {
                    imgs.css("transition-duration", (duration / 1000).toFixed(1) + "s");
                    //inverse the number we set in the css
                    var value = (distance < 0 ? "" : "-") + Math.abs(distance).toString();
                    imgs.css("transform", "translate(" + value + "px,0)");
                },
                goToContent: function (newIndex)
                {
                    if (this.$arrayContent.length > newIndex && newIndex >= 0)
                    {
                        this.scrollPositions[this.indexContent] = $('body').scrollTop();
                        this.indexContent = newIndex;
                        this.switchContent();
                        $('body').scrollTop(this.scrollPositions[this.indexContent]);
                    }
                },
                switchContent: function () {
                    this.$arrayContent.hide();
                    this.$arrayNavBar.removeClass('ui-btn-active');
                    this.$arrayNavBar.removeClass('ui-state-persist');
                    $(this.$arrayContent[this.indexContent]).show();
                    $(this.$arrayNavBar[this.indexContent]).addClass('ui-btn-active');
                    $(this.$arrayNavBar[this.indexContent]).addClass('ui-state-persist');
                }
            });
            return ItemView;
        });