// jQuery Month Calendar Plugin 1.0 Copyright 2009 Jarrett Vance http://jvance.com/pages/jQueryMonthCalPlugin.xhtml
 // DONT UPDATE THIS PLUGIN. EVERYTHING WILL BREAK
 // Modified by TomvB

(function ($) {
  $.fn.calendar = function (options) {
	var opts = $.extend({}, $.fn.calendar.defaults, options);
	return this.each(function () {
	  var $this = $(this);
	  $this.find('td')
		.hover(function () { $(this).addClass('hover') }, function () { $(this).removeClass('hover') })
		.click(function () { });
	  $this.find('a[rel=prev], a[rel=next]').click(function () {
		changeMonth($this, opts, ($(this).attr('rel') == 'next'));
		return false;
	  });
	  refreshCal($this, opts);
	});
  }

  function changeMonth($cal, opts, next) {
	if (next && opts.month == 11) {
	  opts.year = opts.year + 1;
	  opts.month = 0;
	} else if (!next && opts.month == 0) {
	  opts.year = opts.year - 1;
	  opts.month = 11;
	} else {
	  opts.month = next ? opts.month + 1 : opts.month - 1;
	}
	importCal($cal, opts);
  }

  function changeDay($cal, $cell, date, opts) {
	opts.current = date;
	opts.year = date.getFullYear();
	opts.month = date.getMonth();
	refreshCal($cal, opts);
	//allow outside cancel
	return opts.dateChanged(date);
  };

  function refreshCal($cal, opts) {
	var monthNames = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
	$cal.find('.month').text(monthNames[opts.month] + ' ' + opts.year);
	$cal.find('td').removeClass('out').removeClass('today').removeClass('current');
	var days = getDaysInMonthForDate(opts.year, opts.month, opts.current);
	var tds = $cal.find('td');

	for (j = 0; j < 42; j++) {
	  $(tds[j]).find('.tdday').text(days[j].date.getDate())
		.attr('title', days[j].date.toDateString())
		//.attr('href', getUrl(days[j].date, opts));
	  if (days[j].out) $(tds[j]).addClass('out');
	  if (days[j].current) $(tds[j]).addClass('current');
	  if (days[j].today) $(tds[j]).addClass('today');
	}
  }
  
  function importCal($cal, opts) {
	  $.ajax({
		url: "agenda/build/calendar",
		data: opts,
		success: function (html) {
			$('.tbody').empty();
			$(".tbody").append(html);
			refreshCal($cal, opts);
		}
	  })
  }
  
  function getUrl(date, opts) {
	var url = opts.templateUrl;
	url = url.replace(opts.templateYear, date.getFullYear());
	url = url.replace(opts.templateMonth, ((date.getMonth() + 1) < 10 ? "0" : "") + (date.getMonth() + 1));
	url = url.replace(opts.templateDay, (date.getDate() < 10 ? "0" : "") + date.getDate());
	return url;
  }


  function getDaysInMonthForDate(year, month, current) {
	var today = new Date();
	var first = new Date(year, month, 1);
	first.setDate(first.getDate() - first.getDay());

	var days = new Array(42);
	for (j = 0; j < 42; j++) {
	  var d = new Date(first);
	  d.setDate(first.getDate() + j);
	  days[j] = {
		date: d,
		out: !(d.getFullYear() == year && d.getMonth() == month),
		today: d.getFullYear() == today.getFullYear() && d.getMonth() == today.getMonth() && d.getDate() == today.getDate(),
		current: d.getFullYear() == current.getFullYear() && d.getMonth() == current.getMonth() && d.getDate() == current.getDate()
	  }
	}
	return days;
  };

  $.fn.calendar.defaults = {
	current: new Date(),
	year: new Date().getFullYear(),
	month: new Date().getMonth(),
	templateYear: 'year',
	templateMonth: 'month',
	templateDay: 'day',
	templateUrl: '/year/month/day',
	dateChanged: function (date) { return true; }
  };
})(jQuery);