NEWSBLUR.Views.StoryView = Backbone.View.extend({
    
    className: 'NB-feed-story',
    
    events: {
        "click .NB-feed-story-content a"        : "click_link_in_story",
        "click .NB-feed-story-title"            : "click_link_in_story",
        "mouseenter .NB-feed-story-manage-icon" : "mouseenter_manage_icon",
        "mouseleave .NB-feed-story-manage-icon" : "mouseleave_manage_icon",
        "contextmenu .NB-feed-story-header"     : "show_manage_menu",
        "click .NB-feed-story-manage-icon"      : "show_manage_menu",
        "click .NB-sideoption-share-save"       : "mark_story_as_shared",
        "click .NB-feed-story-hide-changes"     : "hide_story_changes",
        "click .NB-feed-story-header-title"     : "open_feed",
        "click .NB-feed-story-tag"              : "save_classifier",
        "click .NB-feed-story-author"           : "save_classifier",
        "click .NB-feed-story-train"            : "open_story_trainer",
        "click .NB-feed-story-save"             : "star_story",
        "click .NB-feed-story-share"            : "toggle_feed_story_share_dialog"
    },
    
    initialize: function() {
        _.bindAll(this, 'mouseleave', 'mouseenter');
        this.model.bind('change', this.toggle_classes, this);
        this.model.bind('change:read_status', this.toggle_read_status, this);
        this.model.bind('change:selected', this.toggle_selected, this);
        this.model.bind('change:starred', this.toggle_starred, this);
        
        // Binding directly instead of using event delegation. Need for speed.
        this.$el.bind('mouseenter', this.mouseenter);
        this.$el.bind('mouseleave', this.mouseleave);

        this.model.story_view = this;
    },
    
    // =============
    // = Rendering =
    // =============
    
    render: function() {
        this.feed = NEWSBLUR.assets.get_feed(this.model.get('story_feed_id'));
        this.classifiers = NEWSBLUR.assets.classifiers[this.model.get('story_feed_id')];
        
        this.$el.html(this.render_to_string());
        this.toggle_classes();
        this.toggle_read_status();
        this.generate_gradients();
        
        this.$el.data('story_id', this.model.id).data('feed_id', this.model.get('story_feed_id'));
        
        return this;
    },
    
    render_to_string: function() {
        var $story_title = _.template('\
            <div class="NB-feed-story-header">\
                <div class="NB-feed-story-header-feed">\
                    <% if (feed) { %>\
                        <div class="NB-feed-story-feed">\
                            <img class="feed_favicon" src="<%= $.favicon(feed) %>">\
                            <span class="NB-feed-story-header-title"><%= feed.get("feed_title") %></span>\
                        </div>\
                    <% } %>\
                </div>\
                <div class="NB-feed-story-header-info">\
                    <% if (story.get("story_authors")) { %>\
                        <div class="NB-feed-story-author <% if (authors_score) { %>NB-score-<%= authors_score %><% } %>">\
                            <%= story.get("story_authors") %>\
                        </div>\
                    <% } %>\
                    <% if (story.get("story_tags", []).length) { %>\
                        <div class="NB-feed-story-tags">\
                            <% _.each(story.get("story_tags"), function(tag) { %>\
                                <div class="NB-feed-story-tag <% if (tags_score[tag]) { %>NB-score-<%= tags_score[tag] %><% } %>">\
                                    <%= tag %>\
                                </div>\
                            <% }) %>\
                        </div>\
                    <% } %>\
                    <div class="NB-feed-story-title-container">\
                        <div class="NB-feed-story-sentiment"></div>\
                        <div class="NB-feed-story-manage-icon"></div>\
                        <a class="NB-feed-story-title" href="<%= story.get("story_permalink") %>"><%= title %></a>\
                    </div>\
                    <% if (story.get("long_parsed_date")) { %>\
                        <span class="NB-feed-story-date">\
                            <% if (story.has_modifications()) { %>\
                                <div class="NB-feed-story-hide-changes" \
                                     title="<%= NEWSBLUR.assets.preference("hide_story_changes") ? "Show" : "Hide" %>\
                                            story modifications">\
                                </div>\
                            <% } %>\
                            <%= story.get("long_parsed_date") %>\
                        </span>\
                    <% } %>\
                </div>\
            </div>\
            <div class="NB-feed-story-content">\
                <%= story.get("story_content") %>\
            </div>\
            <% if (story.get("comment_count") || story.get("share_count")) { %>\
                <div class="NB-feed-story-comments">\
                    this.make_story_share_comments(story)\
                </div>\
            <% } %>\
            <div class="NB-feed-story-sideoptions-container">\
                <div class="NB-sideoption NB-feed-story-train">\
                    <div class="NB-sideoption-icon">&nbsp;</div>\
                    <div class="NB-sideoption-title">Train this story</div>\
                </div>\
                <div class="NB-sideoption NB-feed-story-save">\
                    <div class="NB-sideoption-icon">&nbsp;</div>\
                    <div class="NB-sideoption-title"><%= story.get("starred") ? "Saved" : "Save this story" %></div>\
                </div>\
                <div class="NB-sideoption NB-feed-story-share">\
                    <div class="NB-sideoption-icon">&nbsp;</div>\
                    <div class="NB-sideoption-title"><%= story.get("shared") ? "Shared" : "Share this story" %></div>\
                </div>\
                <div class="NB-sideoption-share-wrapper">\
                    <div class="NB-sideoption-share">\
                        <div class="NB-sideoption-share-wordcount"></div>\
                        <div class="NB-sideoption-share-optional">Optional</div>\
                        <div class="NB-sideoption-share-title">Comments:</div>\
                        <textarea class="NB-sideoption-share-comments"><%= story.get("shared_comments") %></textarea>\
                        <div class="NB-sideoption-share-save NB-modal-submit-button">Share</div>\
                    </div>\
                </div>\
            </div>\
        ', {
            story   : this.model,
            feed    : this.options.river_stories && this.feed,
            tag     : _.first(this.model.get("story_tags")),
            title   : this.make_story_title(),
            authors_score  : this.classifiers.authors[this.model.get('story_authors')],
            tags_score : this.classifiers.tags,
            options : this.options
        });
        
        return $story_title;
    },
    
    generate_gradients: function() {
        var $header = this.$('.NB-feed-story-header-feed');
        
        $header.css('background-image', NEWSBLUR.utils.generate_gradient(this.feed, 'webkit'));
        $header.css('background-image', NEWSBLUR.utils.generate_gradient(this.feed, 'moz'));
        $header.css('borderTop',        NEWSBLUR.utils.generate_gradient(this.feed, 'border'));
        $header.css('borderBottom',     NEWSBLUR.utils.generate_gradient(this.feed, 'border'));
        $header.css('textShadow',       '0 1px 0 ' + NEWSBLUR.utils.generate_gradient(this.feed, 'shadow'));
    },
    
    make_story_title: function() {
        var title = this.model.get('story_title');
        var classifiers = NEWSBLUR.assets.classifiers[this.model.get('story_feed_id')];
        var feed_titles = classifiers && classifiers.titles || [];
        
        _.each(feed_titles, function(score, title_classifier) {
            if (title.indexOf(title_classifier) != -1) {
                title = title.replace(title_classifier, '<span class="NB-score-'+score+'">'+title_classifier+'</span>');
            }
        });
        
        return title;
    },
    
    // ============
    // = Bindings =
    // ============
    
    toggle_classes: function() {
        var story = this.model;
        var unread_view = NEWSBLUR.assets.preference('unread_view');
        var score = story.score();
        
        this.$el.toggleClass('NB-inverse', this.feed.is_light());
        this.$el.toggleClass('NB-story-starred', !!story.get('starred'));
        this.$el.toggleClass('NB-story-shared', !!story.get('shared'));
        this.$el.removeClass('NB-story-negative NB-story-neutral NB-story-postiive')
                .addClass('NB-story-'+story.score_name(score));
                
        if (unread_view > score) {
            this.$el.css('display', 'none');
        }

        if (NEWSBLUR.assets.preference('show_tooltips')) {
            this.$('.NB-story-sentiment').tipsy({
                delayIn: 375,
                gravity: 's'
            });
            this.$('.NB-feed-story-hide-changes').tipsy({
                delayIn: 375
            });
        }
    },
    
    toggle_read_status: function() {
        this.$el.toggleClass('read', !!this.model.get('read_status'));
    },
    
    toggle_selected: function(model, selected, options) {
        this.$el.toggleClass('NB-selected', !!this.model.get('selected'));

        if (selected && !options.selected_by_scrolling) {
            NEWSBLUR.app.story_list.scroll_to_selected_story(this);
        }
    },
    
    // ===========
    // = Actions =
    // ===========
    
    select_story: function() {
    },
    
    preserve_classifier_color: function(classifier_type, value, score) {
        var $tag;
        this.$('.NB-feed-story-'+classifier_type).each(function() {
            if ($(this).text() == value) {
                $tag = $(this);
                return false;
            }
        });
        $tag.removeClass('NB-score-now-1')
            .removeClass('NB-score-now--1')
            .removeClass('NB-score-now-0')
            .addClass('NB-score-now-'+score)
            .one('mouseleave', function() {
                $tag.removeClass('NB-score-now-'+score);
            });
            _.defer(function() {
                $tag.one('mouseenter', function() {
                    $tag.removeClass('NB-score-now-'+score);
                });
            });
    },

    toggle_starred: function() {
        var story = this.model;
        var $sideoption_title = this.$('.NB-feed-story-save .NB-sideoption-title');
        
        if (story.get('starred')) {
            $sideoption_title.text('Saved');
        } else {
            $sideoption_title.text('Removed');
            $sideoption_title.one('mouseleave', function() {
                _.delay(function() {
                    if (!story.get('starred')) {
                        $sideoption_title.text('Save this story');
                    }
                }, 200);
            });        
        }
    },
    
    // ==========
    // = Events =
    // ==========
    
    click_link_in_story: function(e) {
        e.preventDefault();
        var href = $(e.currentTarget).attr('href');
        
        if (NEWSBLUR.assets.preference('new_window') == 1) {
            window.open(href, '_blank');
        } else {
            window.open(href);
        }
    },
    
    mouseenter_manage_icon: function() {
        var menu_height = 270;
        if (this.$el.offset().top > $(window).height() - menu_height) {
            this.$el.addClass('NB-hover-inverse');
        }
    },
    
    mouseleave_manage_icon: function() {
        this.$el.removeClass('NB-hover-inverse');
    },
    
    mouseenter: function() {
        if (this.model.get('selected')) return;
        
        if (NEWSBLUR.reader.flags['switching_to_feed_view'] ||
            NEWSBLUR.reader.flags['scrolling_by_selecting_story_title'] ||
            NEWSBLUR.assets.preference('feed_view_single_story')) {
            return;
        }
        
        this.model.set('selected', true, {selected_by_scrolling: true});
    },
    
    mouseleave: function() {
        
    },

    show_manage_menu: function(e) {
        e.preventDefault();
        e.stopPropagation();
        // console.log(["showing manage menu", this.model.is_social() ? 'socialfeed' : 'feed', $(this.el), this]);
        NEWSBLUR.reader.show_manage_menu('story', this.$el, {
            story_id: this.model.id,
            feed_id: this.model.get('story_feed_id')
        });
        return false;
    },
    
    mark_story_as_shared: function() {
        NEWSBLUR.reader.mark_story_as_shared(this.model.id, {'source': 'sideoption'});
    },
    
    hide_story_changes: function() {
        var $button = this.$('.NB-feed-story-hide-changes');
        
        if (NEWSBLUR.assets.preference('hide_story_changes')) {
            this.$('ins').css({'text-decoration': 'underline'});
            this.$('del').css({'display': 'inline'});
        } else {
            this.$('ins').css({'text-decoration': 'none'});
            this.$('del').css({'display': 'none'});
        }
        $button.css('opacity', 1).fadeOut(400);
        $button.tipsy('hide').tipsy('disable');
    },
    
    open_feed: function() {
        NEWSBLUR.reader.open_feed(this.model.get('story_feed_id'));
    },
    
    save_classifier: function(e) {
        var $tag = $(e.currentTarget);
        var classifier_type = $tag.hasClass('NB-feed-story-author') ? 'author' : 'tag';
        var tag = $tag.text();
        var score = $tag.hasClass('NB-score-1') ? -1 : $tag.hasClass('NB-score--1') ? 0 : 1;
        NEWSBLUR.reader.save_classifier(classifier_type, tag, score, feed_id);
        this.preserve_classifier_color(classifier_type, tag, score);
    },
    
    open_story_trainer: function() {
        NEWSBLUR.reader.open_story_trainer(this.model.id, this.model.get('story_feed_id'));
    },
    
    star_story: function() {
        this.model.set('starred', !this.model.get('starred'));
        if (this.model.get('starred')) {
            NEWSBLUR.assets.mark_story_as_starred(this.model.id);
        } else {
            NEWSBLUR.assets.mark_story_as_unstarred(this.model.id);
        }
        NEWSBLUR.reader.update_starred_count();
    },
    
    open_story_in_new_tab: function() {
        window.open(this.model.get('story_permalink'), '_blank');
        window.focus();
    },
    
    toggle_feed_story_share_dialog: function() {

            $.targetIs(e, { tagSelector: '.NB-feed-story-share' }, function($t, $p){
                e.preventDefault();
                var $story = $t.closest('.NB-feed-story');
                var feed_id = $story.data('feed_id');
                var story_id = $story.data('story_id');
                self.toggle_feed_story_share_dialog(story_id, feed_id);
            });
    }
            

});