/**
* 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';

        // Add header if required
        if (options.header)
            html += '<div class="rssHeader">' +
				feeds.title + ' <a href="' + feeds.link + '" title="' + feeds.description + '">' + '<img src="/Style%20Library/MegaDropDown/iconRSS.gif"/>' + '</a>' +
				'</div>';

        // Add body
        html += '<div class="rssBody">' +
			'<ul>';

        // 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 += '<li class="rssRow ' + row + '">' +
				'<' + options.titletag + '><a href="' + entry.link + '" title="View this feed at ' + feeds.title + '">' + entry.title + '</a></' + options.titletag + '>'
            if (options.date) html += '<div>' + pubDate + '</div>'
            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>'
            }

            html += '</li>';

            // Alternate row classes
            if (row == 'odd') {
                row = 'even';
            } else {
                row = 'odd';
            }
        }

        html += '</ul>' +
			'</div>'

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