/**
 * 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,
			header: true,
			titletag: 'h4',
			date: true,
			content: true,
			snippet: true,
			showerror: true,
			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 = '';
		var row = 'odd';

		html += '<h2>Latest from the Blog</h2>';

		// 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 = entryDate.toLocaleDateString() + ' ' + entryDate.toLocaleTimeString();

			// Add feed row
			html += '<div class="blog">' +
				'<img src="/images/thumbs/tiny-image.jpg" alt="Dash Technical Notes" />' +
				'<div>' +
				'<a href="' + entry.link + '" class="blog_title" title="View this feed at ' + feeds.title + '">' + entry.title + '</a>'
			if (options.content) {

				// Use feed snippet if available and optioned
				if (options.snippet && entry.contentSnippet != '') {
					var content = entry.contentSnippet;
				} else {
					var content = entry.content;
				}

				html += '<p>' + content + '</p>' + 
				   '<a href="' + entry.link + '" class="read_full_article">read full article...</a>';
			}

			html += '</div>' +
					'<br clear="all" />' +
				'</div>';

			html += '<div class="seperator_2">' +
					'</div>';
		}

		$(e).html(html);
	};
})(jQuery);