/* jFeed : jQuery feed parser plugin
 * Copyright (C) 2007 Jean-François Hovinne - http://www.hovinne.com/
 * Dual licensed under the MIT (MIT-license.txt)
 * and GPL (GPL-license.txt) licenses.
 */

(function($) {

    $.getFeed = function(options) {

        options = $.extend({

            url: null,
            data: null,
            success: null

        }, options);

        if (options.url) {
            
            $.ajax({
                type: 'GET',
                url: options.url,
                data: options.data,
                dataType: 'xml',                
                success: function(xml) {                   
                    var feed = new JFeed(xml);
                    if ($.isFunction(options.success)) options.success(feed);
                }
            });
        }
    };

    function JFeed(xml) {
        if (xml) this.parse(xml);
    };

    JFeed.prototype = {

        type: '',
        version: '',
        title: '',
        link: '',
        description: '',
        parse: function(xml) {

            if ($('channel', xml).length == 1) {

                this.type = 'rss';
                var feedClass = new JRss(xml);

            } else if ($('feed', xml).length == 1) {

                this.type = 'atom';
                var feedClass = new JAtom(xml);
            }

            if (feedClass) $.extend(this, feedClass);
        }
    };

    function JFeedItem() { };

    JFeedItem.prototype = {

        title: '',
        link: '',
        description: '',
        updated: '',
        id: ''
    };

    function JAtom(xml) {
        this._parse(xml);
    };

    JAtom.prototype = {

        _parse: function(xml) {

            var channel = $('feed', xml).eq(0);

            this.version = '1.0';
            this.title = $(channel).find('title:first').text();
            this.link = $(channel).find('link:first').attr('href');
            this.description = $(channel).find('subtitle:first').text();
            this.language = $(channel).attr('xml:lang');
            this.updated = $(channel).find('updated:first').text();

            this.items = new Array();

            var feed = this;

            $('entry', xml).each(function() {

                var item = new JFeedItem();

                item.title = $(this).find('title').eq(0).text();
                item.link = $(this).find('link').eq(0).attr('href');
                item.description = $(this).find('content').eq(0).text();
                item.updated = $(this).find('updated').eq(0).text();
                item.id = $(this).find('id').eq(0).text();

                feed.items.push(item);
            });
        }
    };

    function JRss(xml) {
        this._parse(xml);
    };

    JRss.prototype = {

        _parse: function(xml) {

            if ($('rss', xml).length == 0) this.version = '1.0';
            else this.version = $('rss', xml).eq(0).attr('version');

            var channel = $('channel', xml).eq(0);

            this.title = $(channel).find('title:first').text();
            this.link = $(channel).find('link:first').text();
            this.description = $(channel).find('description:first').text();
            this.language = $(channel).find('language:first').text();
            this.updated = $(channel).find('lastBuildDate:first').text();

            this.items = new Array();

            var feed = this;

            $('item', xml).each(function() {

                var item = new JFeedItem();

                item.title = $(this).find('title').eq(0).text();
                item.link = $(this).find('link').eq(0).text();
                item.description = $(this).find('description').eq(0).text();
                item.updated = $(this).find('pubDate').eq(0).text();
                item.id = $(this).find('guid').eq(0).text();

                feed.items.push(item);
            });
        }
    };
})(jQueryCS);