/*
 * Copyright (C) 2009 Paul Uithol, SMARTposition <http://www.smartposition.nl>
 *
 * SmartPosition Common
 */

/**
 * Browser init
 */
if (!window.console || !console.firebug) {
	var names = ["log", "debug", "info", "warn", "error", "assert", "dir", "dirxml",
	"group", "groupEnd", "time", "timeEnd", "count", "trace", "profile", "profileEnd"];

	window.console = {};
	for (var i = 0; i < names.length; ++i)
		window.console[names[i]] = function() {};
}

var SmartPosition = window.SmartPosition = SmartPosition || {};
SmartPosition.debug = true;

//pads left
String.prototype.lpad = function(padString, length) {
	var str = this;
    while (str.length < length)
        str = padString + str;
    return str;
}
 
//pads right
String.prototype.rpad = function(padString, length) {
	var str = this;
    while (str.length < length)
        str = str + padString;
    return str;
}

Date.prototype.setISO8601 = function (string) {
	var regexp = "([0-9]{4})(-([0-9]{2})(-([0-9]{2})" + "([T ]([0-9]{2}):([0-9]{2})(:([0-9]{2})(\.([0-9]+))?)?" +	"(Z|(([-+])([0-9]{2}):([0-9]{2})))?)?)?)?";
	//"(\d\d\d\d)(?:-?(\d\d)(?:-?(\d\d)(?:[T ](\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d+))?)?)?(?:Z|(?:([-+])(\d\d)(?::?(\d\d))?)?)?)?)?)?";
	var d = string.match(new RegExp(regexp));
	var offset = 0;
	var date = new Date(d[1], 0, 1);

	if (d[3]) { date.setMonth(d[3] - 1); }
	if (d[5]) { date.setDate(d[5]); }
	if (d[7]) { date.setHours(d[7]); }
	if (d[8]) { date.setMinutes(d[8]); }
	if (d[10]) { date.setSeconds(d[10]); }
	if (d[12]) { date.setMilliseconds(Number("0." + d[12]) * 1000); }
	if (d[14]) {
		offset = (Number(d[16]) * 60) + Number(d[17]);
		offset *= ((d[15] == '-') ? 1 : -1);
	}

	offset -= date.getTimezoneOffset();
	time = (Number(date) + (offset * 60 * 1000));
	this.setTime(Number(time));
}

Date.prototype.toISO8601String = function (format, offset) {
	/* accepted values for the format [1-6]:
	 1 Year:
	   YYYY (eg 1997)
	 2 Year and month:
	   YYYY-MM (eg 1997-07)
	 3 Complete date:
	   YYYY-MM-DD (eg 1997-07-16)
	 4 Complete date plus hours and minutes:
	   YYYY-MM-DDThh:mmTZD (eg 1997-07-16T19:20+01:00)
	 5 Complete date plus hours, minutes and seconds:
	   YYYY-MM-DDThh:mm:ssTZD (eg 1997-07-16T19:20:30+01:00)
	 6 Complete date plus hours, minutes, seconds and a decimal
	   fraction of a second
	   YYYY-MM-DDThh:mm:ss.sTZD (eg 1997-07-16T19:20:30.45+01:00)
	*/
	if (!format) { var format = 6; }
	if (!offset) {
		var offset = 'Z';
		var date = this;
	} else {
		var d = offset.match(/([-+])([0-9]{2}):([0-9]{2})/);
		var offsetnum = (Number(d[2]) * 60) + Number(d[3]);
		offsetnum *= ((d[1] == '-') ? -1 : 1);
		var date = new Date(Number(Number(this) + (offsetnum * 60000)));
	}

	var zeropad = function (num) {
		return ((num < 10) ? '0' : '') + num;
	}

	var str = "";
	str += date.getUTCFullYear();
	if (format > 1) { str += "-" + zeropad(date.getUTCMonth() + 1); }
	if (format > 2) { str += "-" + zeropad(date.getUTCDate()); }
	if (format > 3) {
		str += "T" + zeropad(date.getUTCHours()) +
			":" + zeropad(date.getUTCMinutes());
	}
	if (format > 5) {
		var secs = Number(date.getUTCSeconds() + "." +
			((date.getUTCMilliseconds() < 100) ? '0' : '') +
			zeropad(date.getUTCMilliseconds()));
		str += ":" + zeropad(secs);
	} else if (format > 4) {
		str += ":" + zeropad(date.getUTCSeconds());
	}

	if (format > 3)
		str += offset;
	
	return str;
}

/*
 * 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);
};