/*
* jQuery jclock - Clock plugin - v 2.2.0
* http://plugins.jquery.com/project/jclock
*
* Copyright (c) 2007-2009 Doug Sparling <http://www.dougsparling.com>
* Licensed under the MIT License:
* http://www.opensource.org/licenses/mit-license.php
*/

(function($) {

  $.fn.jclock = function(options) {
	var version = '2.2.0';

	// options
	var opts = $.extend({}, $.fn.jclock.defaults, options);

	return this.each(function() {
	  $this = $(this);
	  $this.timerID = null;
	  $this.running = false;

	  // Record keeping for seeded clock
	  $this.increment = 0;
	  $this.lastCalled = new Date().getTime();

	  var o = $.meta ? $.extend({}, opts, $this.data()) : opts;

	  $this.format = o.format;
	  $this.utc = o.utc;
	  // deprecate utc_offset (v 2.2.0)
	  $this.utcOffset = (o.utc_offset != null) ? o.utc_offset : o.utcOffset;
	  $this.seedTime = o.seedTime;
	  $this.timeout = o.timeout;

	  $this.css({
		fontFamily: o.fontFamily,
		fontSize: o.fontSize,
		backgroundColor: o.background,
		color: o.foreground
	  });

	  // %a
	  $this.daysAbbrvNames = new Array(7);
	  $this.daysAbbrvNames[0] = "Sun";
	  $this.daysAbbrvNames[1] = "Mon";
	  $this.daysAbbrvNames[2] = "Tue";
	  $this.daysAbbrvNames[3] = "Wed";
	  $this.daysAbbrvNames[4] = "Thu";
	  $this.daysAbbrvNames[5] = "Fri";
	  $this.daysAbbrvNames[6] = "Sat";

	  // %A
	  $this.daysFullNames = new Array(7);
	  $this.daysFullNames[0] = "Sunday";
	  $this.daysFullNames[1] = "Monday";
	  $this.daysFullNames[2] = "Tuesday";
	  $this.daysFullNames[3] = "Wednesday";
	  $this.daysFullNames[4] = "Thursday";
	  $this.daysFullNames[5] = "Friday";
	  $this.daysFullNames[6] = "Saturday";

	  // %b
	  $this.monthsAbbrvNames = new Array(12);
	  $this.monthsAbbrvNames[0] = "Jan";
	  $this.monthsAbbrvNames[1] = "Feb";
	  $this.monthsAbbrvNames[2] = "Mar";
	  $this.monthsAbbrvNames[3] = "Apr";
	  $this.monthsAbbrvNames[4] = "May";
	  $this.monthsAbbrvNames[5] = "Jun";
	  $this.monthsAbbrvNames[6] = "Jul";
	  $this.monthsAbbrvNames[7] = "Aug";
	  $this.monthsAbbrvNames[8] = "Sep";
	  $this.monthsAbbrvNames[9] = "Oct";
	  $this.monthsAbbrvNames[10] = "Nov";
	  $this.monthsAbbrvNames[11] = "Dec";

	  // %B
	  $this.monthsFullNames = new Array(12);
	  $this.monthsFullNames[0] = "January";
	  $this.monthsFullNames[1] = "February";
	  $this.monthsFullNames[2] = "March";
	  $this.monthsFullNames[3] = "April";
	  $this.monthsFullNames[4] = "May";
	  $this.monthsFullNames[5] = "June";
	  $this.monthsFullNames[6] = "July";
	  $this.monthsFullNames[7] = "August";
	  $this.monthsFullNames[8] = "September";
	  $this.monthsFullNames[9] = "October";
	  $this.monthsFullNames[10] = "November";
	  $this.monthsFullNames[11] = "December";

	  $.fn.jclock.startClock($this);

	});
  };

  $.fn.jclock.startClock = function(el) {
	$.fn.jclock.stopClock(el);
	$.fn.jclock.displayTime(el);
  }

  $.fn.jclock.stopClock = function(el) {
	if(el.running) {
	  clearTimeout(el.timerID);
	}
	el.running = false;
  }

  $.fn.jclock.displayTime = function(el) {
	var time = $.fn.jclock.getTime(el);
	el.html(time);
	el.timerID = setTimeout(function(){$.fn.jclock.displayTime(el)},el.timeout);
  }

  $.fn.jclock.getTime = function(el) {
	if(typeof(el.seedTime) == 'undefined') {
	  // Seed time not being used, use current time
	  var now = new Date();
	} else {
	  // Otherwise, use seed time with increment
	  el.increment += new Date().getTime() - el.lastCalled;
	  var now = new Date(el.seedTime + el.increment);
	  el.lastCalled = new Date().getTime();
	}

	if(el.utc == true) {
	  var localTime = now.getTime();
	  var localOffset = now.getTimezoneOffset() * 60000;
	  var utc = localTime + localOffset;
	  var utcTime = utc + (3600000 * el.utcOffset);
	  now = new Date(utcTime);
	}

	var timeNow = "";
	var i = 0;
	var index = 0;
	while ((index = el.format.indexOf("%", i)) != -1) {
	  timeNow += el.format.substring(i, index);
	  index++;

	  // modifier flag
	  //switch (el.format.charAt(index++)) {
	  //}

	  var property = $.fn.jclock.getProperty(now, el, el.format.charAt(index));
	  index++;

	  //switch (switchCase) {
	  //}

	  timeNow += property;
	  i = index
	}

	timeNow += el.format.substring(i);
	return timeNow;
  };

  $.fn.jclock.getProperty = function(dateObject, el, property) {

	switch (property) {
	  case "a": // abbrv day names
		  return (el.daysAbbrvNames[dateObject.getDay()]);
	  case "A": // full day names
		  return (el.daysFullNames[dateObject.getDay()]);
	  case "b": // abbrv month names
		  return (el.monthsAbbrvNames[dateObject.getMonth()]);
	  case "B": // full month names
		  return (el.monthsFullNames[dateObject.getMonth()]);
	  case "d": // day 01-31
		  return ((dateObject.getDate() < 10) ? "0" : "") + dateObject.getDate();
	  case "H": // hour as a decimal number using a 24-hour clock (range 00 to 23)
		  return ((dateObject.getHours() < 10) ? "0" : "") + dateObject.getHours();
	  case "I": // hour as a decimal number using a 12-hour clock (range 01 to 12)
		  var hours = (dateObject.getHours() % 12 || 12);
		  return ((hours < 10) ? "0" : "") + hours;
	  case "m": // month number
		  return ((dateObject.getMonth() < 10) ? "0" : "") + (dateObject.getMonth() + 1);
	  case "M": // minute as a decimal number
		  return ((dateObject.getMinutes() < 10) ? "0" : "") + dateObject.getMinutes();
	  case "p": // either `am' or `pm' according to the given time value,
		  // or the corresponding strings for the current locale
		  return (dateObject.getHours() < 12 ? "am" : "pm");
	  case "P": // either `AM' or `PM' according to the given time value,
		  return (dateObject.getHours() < 12 ? "AM" : "PM");
	  case "S": // second as a decimal number
		  return ((dateObject.getSeconds() < 10) ? "0" : "") + dateObject.getSeconds();
	  case "y": // two-digit year
		  return dateObject.getFullYear().toString().substring(2);
	  case "Y": // full year
		  return (dateObject.getFullYear());
	  case "%":
		  return "%";
	}

  }

  // plugin defaults (24-hour)
  $.fn.jclock.defaults = {
	format: '%H:%M:%S',
	utcOffset: 0,
	utc: false,
	fontFamily: '',
	fontSize: '',
	foreground: '',
	background: '',
	seedTime: undefined,
	timeout: 1000 // 1000 = one second, 60000 = one minute
  };

})(jQuery);