// load the Google AJAX Feed API
google.load("feeds", "1");
google.setOnLoadCallback(BooksellerRSSWidget_InitFeed);

var BooksellerRSSWidget_CSS = document.createElement("link");
BooksellerRSSWidget_CSS.setAttribute("rel", "stylesheet");
BooksellerRSSWidget_CSS.setAttribute("type", "text/css");
BooksellerRSSWidget_CSS.setAttribute("href", "http://www.thebookseller.com/sites/all/themes/bookseller/css/rss-widget.css");
document.getElementsByTagName("head")[0].appendChild(BooksellerRSSWidget_CSS);

function BooksellerRSSWidget_InitFeed() {
	// sanitize user-exposed variables
	_BooksellerRSSWidget_Feed = urlencode(BooksellerRSSWidget_Feed);
	_BooksellerRSSWidget_Tag = urlencode(BooksellerRSSWidget_Tag);
	
	var feedUrl = 'http://www.thebookseller.com/'+_BooksellerRSSWidget_Feed;
	if (_BooksellerRSSWidget_Tag) feedUrl += '/'+_BooksellerRSSWidget_Tag;
	feedUrl += '/rss.html';
	
	// note: we have to set both 'class' and 'className' attributes in the code below
	// because stupid IE only recognises the latter...
	
	var feed = new google.feeds.Feed(feedUrl);
	feed.setNumEntries(5);
	feed.setResultFormat(google.feeds.Feed.MIXED_FORMAT);
	feed.load(function(result) {
		if (!result.error) {
			var container = document.getElementById(BooksellerRSSWidget_TargetId);
			container.innerHTML = '';
			
			var header = document.createElement('div');
			header.setAttribute('class', 'bookseller_rss_widget_Header');
			header.setAttribute('className', 'bookseller_rss_widget_Header');
			
			var lLink = document.createElement('a');
			lLink.href = 'http://www.thebookseller.com/';
			lLink.target = 'theBookseller';
			
			var logoImg = document.createElement('img');
			logoImg.setAttribute('src', 'http://www.thebookseller.com/sites/all/themes/bookseller/images/widgetlogo.gif');
			logoImg.setAttribute('class', 'bookseller_rss_widget_Header_Logo');
			logoImg.setAttribute('className', 'bookseller_rss_widget_Header_Logo');
			lLink.appendChild(logoImg);
			header.appendChild(lLink);
			
			var timestampEl = google.feeds.getElementsByTagNameNS(result.xmlDocument, "", "lastBuildDate")[0];
			var lastBuildDate = timestampEl.firstChild.nodeValue;
			
			var split = lastBuildDate.split('T');
			var datePart = split[0].replace(/-/g, '/');
			var timePart = split[1].split('+')[0];
			var timeParts = timePart.split(':');
			var timeSuffix = 'am';
			if (timeParts[0] > 12) {
				timeParts[0] -= 12;
				timeSuffix = 'pm';
			}
			
			var dateObj = new Date(datePart+' '+timePart);
			var dateSpan = document.createElement('div');
			dateSpan.setAttribute('class', 'bookseller_rss_widget_Date');
			dateSpan.setAttribute('className', 'bookseller_rss_widget_Date');
			
			var dateStr = dateObj.format('dS mmmm');
			var timeStr = timeParts[0]+':'+timeParts[1]+timeSuffix;
			
			dateSpan.appendChild(document.createTextNode('Last updated,'));
			dateSpan.appendChild(document.createElement('br'));
			dateSpan.appendChild(document.createTextNode(dateStr));
			//dateSpan.appendChild(document.createElement('br'));
			//dateSpan.appendChild(document.createTextNode(timeStr));
			header.appendChild(dateSpan);
			
			container.appendChild(header);
			
			var subHeader = document.createElement('div');
			subHeader.setAttribute('class', 'bookseller_rss_widget_SubHeader');
			subHeader.setAttribute('className', 'bookseller_rss_widget_SubHeader');
			subHeader.appendChild(document.createTextNode('Latest '+BooksellerRSSWidget_Feed+' articles'));
			if (_BooksellerRSSWidget_Tag) {
				subHeader.appendChild(document.createTextNode(' tagged '));
				var node = document.createElement('strong');
				node.appendChild(document.createTextNode("'"+BooksellerRSSWidget_Tag+"'"));
				subHeader.appendChild(node);
			}
			var arrowImg = document.createElement('img');
			arrowImg.setAttribute('src', 'http://www.thebookseller.com/sites/all/themes/bookseller/images/arrow.gif');
			arrowImg.setAttribute('class', 'bookseller_rss_widget_SubHeader_Arrow');
			arrowImg.setAttribute('className', 'bookseller_rss_widget_SubHeader_Arrow');
			subHeader.appendChild(arrowImg);
			container.appendChild(subHeader);
			
			var list = document.createElement("ul");
			list.setAttribute('class', 'bookseller_rss_widget_Entries');
			list.setAttribute('className', 'bookseller_rss_widget_Entries');
			for (var i = 0; i < result.feed.entries.length; i++) {
			  var entry = result.feed.entries[i];
			  var item = document.createElement("li");
			  
			  var link = document.createElement('a');
			  link.href = entry.link;
			  link.title = entry.content;
			  link.target = 'theBookseller';
			  link.appendChild(document.createTextNode(entry.title));
			  item.appendChild(link);
			  
			  list.appendChild(item);
			}
			container.appendChild(list);
			
			var footer = document.createElement('div');
			footer.setAttribute('class', 'bookseller_rss_widget_Footer');
			footer.setAttribute('className', 'bookseller_rss_widget_Footer');
			
			var footerLink = document.createElement('a');
			footerLink.href = 'http://www.thebookseller.com/'+_BooksellerRSSWidget_Feed+'/';
			footerLink.target = 'theBookseller';
			footerLink.appendChild(document.createTextNode('More '+BooksellerRSSWidget_Feed+' from '));
			var node = document.createElement('strong');
			node.appendChild(document.createTextNode('theBookseller.com'));
			footerLink.appendChild(node);
			footer.appendChild(footerLink);
			
			container.appendChild(footer);
		}
	});
}
function urlencode( str ) {
	// http://kevin.vanzonneveld.net
	// +   original by: Philip Peterson
	// +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
	// +      input by: AJ
	// +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
	// %          note: info on what encoding functions to use from: http://xkr.us/articles/javascript/encode-compare/
	// *     example 1: urlencode('Kevin van Zonneveld!');
	// *     returns 1: 'Kevin+van+Zonneveld%21'
	// *     example 2: urlencode('http://kevin.vanzonneveld.net/');
	// *     returns 2: 'http%3A%2F%2Fkevin.vanzonneveld.net%2F'
	// *     example 3: urlencode('http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a');
	// *     returns 3: 'http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a'
									 
	var histogram = {}, histogram_r = {}, code = 0, tmp_arr = [];
	var ret = str.toString();
	
	var replacer = function(search, replace, str) {
		var tmp_arr = [];
		tmp_arr = str.split(search);
		return tmp_arr.join(replace);
	};
	
	// The histogram is identical to the one in urldecode.
	histogram['!']   = '%21';
	histogram['%20'] = '+';
	
	// Begin with encodeURIComponent, which most resembles PHP's encoding functions
	ret = encodeURIComponent(ret);
	
	for (var search in histogram) {
		replace = histogram[search];
		ret = replacer(search, replace, ret) // Custom replace. No regexing
	}
	
	// Uppercase for full PHP compatibility
	return ret.replace(/(\%([a-z0-9]{2}))/g, function(full, m1, m2) {
		return "%"+m2.toUpperCase();
	});
	
	return ret;
}
/*
 * Date Format 1.2.2
 * (c) 2007-2008 Steven Levithan <stevenlevithan.com>
 * MIT license
 * Includes enhancements by Scott Trenda <scott.trenda.net> and Kris Kowal <cixar.com/~kris.kowal/>
 *
 * Accepts a date, a mask, or a date and a mask.
 * Returns a formatted version of the given date.
 * The date defaults to the current date/time.
 * The mask defaults to dateFormat.masks.default.
 */
var dateFormat = function () {
	var	token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
		timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
		timezoneClip = /[^-+\dA-Z]/g,
		pad = function (val, len) {
			val = String(val);
			len = len || 2;
			while (val.length < len) val = "0" + val;
			return val;
		};

	// Regexes and supporting functions are cached through closure
	return function (date, mask, utc) {
		var dF = dateFormat;

		// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
		if (arguments.length == 1 && (typeof date == "string" || date instanceof String) && !/\d/.test(date)) {
			mask = date;
			date = undefined;
		}

		// Passing date through Date applies Date.parse, if necessary
		date = date ? new Date(date) : new Date();
		if (isNaN(date)) throw new SyntaxError("invalid date");

		mask = String(dF.masks[mask] || mask || dF.masks["default"]);

		// Allow setting the utc argument via the mask
		if (mask.slice(0, 4) == "UTC:") {
			mask = mask.slice(4);
			utc = true;
		}

		var	_ = utc ? "getUTC" : "get",
			d = date[_ + "Date"](),
			D = date[_ + "Day"](),
			m = date[_ + "Month"](),
			y = date[_ + "FullYear"](),
			H = date[_ + "Hours"](),
			M = date[_ + "Minutes"](),
			s = date[_ + "Seconds"](),
			L = date[_ + "Milliseconds"](),
			o = utc ? 0 : date.getTimezoneOffset(),
			flags = {
				d:    d,
				dd:   pad(d),
				ddd:  dF.i18n.dayNames[D],
				dddd: dF.i18n.dayNames[D + 7],
				m:    m + 1,
				mm:   pad(m + 1),
				mmm:  dF.i18n.monthNames[m],
				mmmm: dF.i18n.monthNames[m + 12],
				yy:   String(y).slice(2),
				yyyy: y,
				h:    H % 12 || 12,
				hh:   pad(H % 12 || 12),
				H:    H,
				HH:   pad(H),
				M:    M,
				MM:   pad(M),
				s:    s,
				ss:   pad(s),
				l:    pad(L, 3),
				L:    pad(L > 99 ? Math.round(L / 10) : L),
				t:    H < 12 ? "a"  : "p",
				tt:   H < 12 ? "am" : "pm",
				T:    H < 12 ? "A"  : "P",
				TT:   H < 12 ? "AM" : "PM",
				Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
				o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
				S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10]
			};

		return mask.replace(token, function ($0) {
			return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
		});
	};
}();

// Some common format strings
dateFormat.masks = {
	"default":      "ddd mmm dd yyyy HH:MM:ss",
	shortDate:      "m/d/yy",
	mediumDate:     "mmm d, yyyy",
	longDate:       "mmmm d, yyyy",
	fullDate:       "dddd, mmmm d, yyyy",
	shortTime:      "h:MM TT",
	mediumTime:     "h:MM:ss TT",
	longTime:       "h:MM:ss TT Z",
	isoDate:        "yyyy-mm-dd",
	isoTime:        "HH:MM:ss",
	isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss",
	isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};

// Internationalization strings
dateFormat.i18n = {
	dayNames: [
		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
		"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
	],
	monthNames: [
		"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
		"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
	]
};

// For convenience...
Date.prototype.format = function (mask, utc) {
	return dateFormat(this, mask, utc);
};