/*global window, document, Ghost, $, _, Backbone, JST */
(function () {
    "use strict";

    Ghost.View = Backbone.View.extend({

        // Adds a subview to the current view, which will
        // ensure its removal when this view is removed,
        // or when view.removeSubviews is called
        addSubview: function (view) {
            if (!(view instanceof Backbone.View)) {
                throw new Error("Subview must be a Backbone.View");
            }
            this.subviews = this.subviews || [];
            this.subviews.push(view);
            return view;
        },

        // Removes any subviews associated with this view
        // by `addSubview`, which will in-turn remove any
        // children of those views, and so on.
        removeSubviews: function () {
            var i, l, children = this.subviews;
            if (!children) {
                return this;
            }
            for (i = 0, l = children.length; i < l; i += 1) {
                children[i].remove();
            }
            this.subviews = [];
            return this;
        },

        // Extends the view's remove, by calling `removeSubviews`
        // if any subviews exist.
        remove: function () {
            if (this.subviews) {
                this.removeSubviews();
            }
            return Backbone.View.prototype.remove.apply(this, arguments);
        }

    });

    Ghost.TemplateView = Ghost.View.extend({
        templateName: "widget",

        template: function (data) {
            return JST[this.templateName](data);
        },

        templateData: function () {
            if (this.model) {
                return this.model.toJSON();
            }

            if (this.collection) {
                return this.collection.toJSON();
            }

            return {};
        },

        render: function () {
            this.$el.html(this.template(this.templateData()));

            if (_.isFunction(this.afterRender)) {
                this.afterRender();
            }

            return this;
        }
    });

    /**
     * This is the view to generate the markup for the individual
     * notification. Will be included into #flashbar.
     *
     * States can be
     * - persistent
     * - passive
     *
     * Types can be
     * - error
     * - success
     * - alert
     * -   (empty)
     *
     */
    Ghost.Views.Notification = Ghost.View.extend({
        templateName: 'notification',
        className: 'js-bb-notification',
        template: function (data) {
            return JST[this.templateName](data);
        },
        render: function() {
            var html = this.template(this.model);
            this.$el.html(html);
            return this;
        }
    });


    /**
     * This handles Notification groups
     */
    Ghost.Views.NotificationCollection = Ghost.View.extend({
        el: '#flashbar',
        initialize: function() {
            this.render();
        },
        render: function() {
            _.each(this.model, function (item) {
                this.renderItem(item);
            }, this);
        },
        renderItem: function (item) {
            var itemView = new Ghost.Views.Notification({ model: item });
            this.$el.html(itemView.render().el);
        }
    });

}());