/* 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) {

//alert('getting feed');

    options = jQuery.extend({
    
        url: null,
        data: null,
        success: null
        
    }, options);

    if(options.url) {

//alert('getting feed from '+options.url);

       jQuery.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: '',
    category: '',
    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.category = jQuery(this).find('category').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) {
      

//alert('parsing feed');
    
        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.category = jQuery(this).find('category').eq(0).text();
            item.id = jQuery(this).find('guid').eq(0).text();
            
            feed.items.push(item);
        });
    }
};


function showFeed(feed)
{
    /*jQuery('#'+divTgt).html('');
    jQuery('#'+divTgt).append('<h2>'
    + '<a target="_blank" href="'
    + feed.link
    + '">'
    + feed.title
    + '</a>'
    + '</h2>');*/
    
    var html = '';
    

//alert('showing feed');
    
    for(var i = 0; i < feed.items.length; i++) {
    
        var item = feed.items[i];
        //alert('gFilterCategory='+gFilterCategory.toLowerCase()+' item.category='+item.category.toLowerCase());
        if (gFilterCategory && item.category.toLowerCase()!=gFilterCategory.toLowerCase()) continue;

        html += ''
        +'<h1 style="margin:15px 0px 0px 0px;">'+item.title+'</h1></td>'
        +'<table class="contentpaneopen">'
        +'  <tr>'
        +'    <td valign="top">'
        + item.description
        +'    </td>'
        +'  </tr>'
        +'  <tr>'
        +'  	<td>'
        +'  		<a href="'+item.link+'" class="readon">Leer más...</a>'
        +'  	</td>'
        +'  </tr>'
        +'</table>';
    }
    printProductList(html);
	
}


function loadRSS(_url)
{
  jQuery.getFeed({url: _url,success: function(feed) {showFeed(feed);}});
}

var gDivTarget=null;
var gFilterCategory=null;
function printProductList(html)
{
  //alert('printing feed in gDivTarget='+gDivTarget+'='+jQuery('#'+gDivTarget));
  jQuery('#'+gDivTarget).html(html);
  //alert('feed printed in '+gDivTarget+'.html()='+jQuery('#'+gDivTarget).html());
}

function showProductList(urlRSS,divTarget,categoria)
{
  //alert(urlRSS + ' ' + divTarget + ' ' +jQuery('#divRssProductos').length);
  if (urlRSS && divTarget && jQuery('#'+divTarget).length>0){
    //alert(urlRSS + ' ' + divTarget + ' ' +jQuery('#divRssProductos').length);
    gDivTarget = divTarget;
    gFilterCategory = categoria;
    if (jQuery('#loading').length==1) jQuery('#'+divTarget).html(jQuery('#loading').html());
    jQuery.getFeed({url: urlRSS, success: function(feed) {showFeed(feed);}});
  }
}