/* 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.
 */

jQuery.getFeed = function(options) {

options = jQuery.extend({

url: null,
data: null,
success: null

}, options);

if(options.url) {

j$.ajax({
type: 'GET',
url: options.url,
data: options.data,
dataType: 'xml',
success: function(xml) {
var feed = new JFeed(xml);
if(jQuery.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(jQuery('channel', xml).length == 1) {

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

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

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

if(feedClass) jQuery.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 = jQuery('feed', xml).eq(0);

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

this.items = new Array();

var feed = this;

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

var item = new JFeedItem();

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

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

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

JRss.prototype  = {

_parse: function(xml) {

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

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

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

this.items = new Array();

var feed = this;

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

var item = new JFeedItem();

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

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