/**
 * Plugin: jquery.zRSSFeed
 * 
 * Version: 1.0.1
 * (c) Copyright 2010, Zazar Ltd
 * 
 * Description: jQuery plugin for display of RSS feeds via Google Feed API
 *              (Based on original plugin jGFeed by jQuery HowTo)
 * 
 * History:
 * 1.0.1 - Corrected issue with multiple instances
 *
 **/

(function($){

	var current = null; 
	
	$.fn.rssfeed = function(url, options) {	
	
		// Set pluign defaults
		var defaults = {
			limit: 10,
			template:'<a href="{link}">{title}</a>({date})<br />{text}',
			dateFormat:'dd mmm',
			wrapper:'li',
			showerror: false,
			errormsg: '',
			key: null
		};  
		var options = $.extend(defaults, options); 
		
		// Functions
		return this.each(function(i, e) {
			var $e = $(e);
			
			// Add feed class to user div
			if (!$e.hasClass('rssFeed')) $e.addClass('rssFeed');
			
			// Check for valid url
			if(url == null) return false;

			// Create Google Feed API address
			var api = "http://ajax.googleapis.com/ajax/services/feed/load?v=1.0&callback=?&q=" + url;
			if (options.limit != null) api += "&num=" + options.limit;
			if (options.key != null) api += "&key=" + options.key;

			// Send request
			$.getJSON(api, function(data){
				
				// Check for error
				if (data.responseStatus == 200) {
	
					// Process the feeds
					_callback(e, data.responseData.feed, options);
				} else {

					// Handle error if required
					if (options.showerror)
						if (options.errormsg != '') {
							var msg = options.errormsg;
						} else {
							var msg = data.responseDetails;
						};
						$(e).html('<div class="rssError"><p>'+ msg +'</p></div>');
				};
			});				
		});
	};
	
	// Callback function to create HTML result
	var _callback = function(e, feeds, options) {
		if (!feeds) {
			return false;
		}
		var html = '';	
		// Add feeds
		for (var i=0; i<feeds.entries.length; i++) {
			
			// Get individual feed
			var entry = feeds.entries[i];
			
			// Format published date
			var entryDate = new Date(entry.publishedDate);
			var pubDate = dateFormat(entryDate,options.dateFormat);
			
			// Add feed row
			var nt=options.template.replace(/{link}/,entry.link);
			nt=nt.replace(/{date}/,pubDate);
			nt=nt.replace(/{title}/,entry.title);
			nt=nt.replace(/{text}/,entry.contentSnippet);
			
			html += '<'+options.wrapper+'>' + nt + '</'+options.wrapper+'>';
				
		}
		$(e).html(html);
	};
})(jQuery);