/*
 * Calendar for
 * JQuery
 * Manuel Garcia (thekeeper)
 * http://www.mgarcia.info
 * Version 0.2
 *
 * Copyright (c) 2007 Manuel Garcia
 * http://www.opensource.org/licenses/mit-license.php
 */
var fechaHoy;
jQuery.calendarE = function (el,open,Config) {jQuery.calendarE.initialize(el);}
Element = function (el) {return jQuery("<"+el+">");}
jQuery.extend(jQuery.calendarE, {
	initialize: function(el,open,Config) {
		this.input = $(el);
		fechaHoy = this.input.attr('value');
		var lng = new Object();
		// Firefox? IE ?
		try {  var nav = navigator.language.substr(0,2); }
		catch (e)	{ var nav = navigator.userLanguage;}
		lng['en'] = {
      		month : ['Enero','Febrero','Marzo','Abril','Mayo','Junio','Julio','Agosto','Septiembre','Octubre','Noviembre','Diciembre'],
	      	day : ['L','M','M','J','V','S','D'],
    	  	first: 1 // First day of week => Monday
      	};
		lng['es'] = {
      		month : ['Enero','Febrero','Marzo','Abril','Mayo','Junio','Julio','Agosto','Septiembre','Octubre','Noviembre','Diciembre'],
	      	day : ['L','M','M','J','V','S','D'],
    	  	first: 1 // First day of week => Monday
		};
		lng = (!lng[nav])? lng['en'] : lng =  lng[nav] ;
      /* configuration */
		if (!Config)
			this.config = {
				Lng: lng,
				imgNext: 'img/next.gif',
				imgPrev: 'img/prev.gif'
			};
		this.month_name = this.config.Lng.month;
		this.day_name =  this.config.Lng.day;
		this.create_calendar();
	},
    findPos: function (obj) {
  	  var curleft = curtop = 0;
  	  if (obj.offsetParent) {
  		curleft = obj.offsetLeft
  		curtop = obj.offsetTop
  		while (obj = obj.offsetParent) {
  			curleft += obj.offsetLeft
  			curtop += obj.offsetTop
  		}
  	  }
  	   return [curleft,curtop];
    },
	create_calendar: function() {
		var position = this.input;
		if ($('#ncalendar'))  $('#ncalendar').remove();
		// content div  //
		this.div = new Element('div')
			.css({
				'left':position.left})
			.attr('id', 'ncalendar');
		this.nav();
		this.setdate(this.input.attr('value'));
	} ,
	nav: function (today) {
		  // nav
		this.calendardiv = new Element('div').appendTo(this.div);
		this.title = new Element('div')
			.css({'display':'inline','font-weight':'bold'})
				.appendTo(this.calendardiv);
		// next month
		this.next = new Element('img').attr('src', this.config.imgNext).insertAfter(this.title)
			.css({'margin-left':'15px'});
		// before month
		this.before = new Element('img').attr('src', this.config.imgPrev).insertBefore(this.title)
			.css({'margin-right':'15px'});	
		// table
		this.table = new Element('table').appendTo(this.calendardiv);
		var thead = new Element('thead').appendTo(this.table);
   		var tr = new Element('tr').appendTo(thead);
		jQuery.each(this.day_name, function(day,el) {
			var td = new Element('th').html(el).appendTo(tr);
		});
		var localThis = this;
		 this.seeAll = new Element('p')
			.attr('id', 'seeAll')
			.text('ver todos')
			.appendTo(this.calendardiv);
			this.seeAll.click(function(e){
				localThis.tbody.remove();
				localThis.setdate(fechaHoy);
			})
		},
		setdate : function(date) {
			// reset event nav
			this.next.unbind( "click" );
			this.before.unbind( "click" );
			if (!this.validate_date(date)) {
		        this.today = new Date();
			    this.today.setDate(1);
			} else {
				var dateinp = date.split('/');
				this.today = new Date(dateinp[2],dateinp[1]-1,dateinp[0],0,0,0);
			}
			this.next_m = this.today.getMonth();
			this.next_m++;
			this.title.html(this.month_name[this.today.getMonth()]+' ' + this.today.getFullYear());
			var localThis = this;
			// event next
			this.next.click(function(e) {
				var date = localThis.today;
				date.setMonth(localThis.next_m+1,1);
				localThis.tbody.remove();
				localThis.setdate(date.getDate()+'/'+date.getMonth()+'/'+date.getFullYear());
				var month = date.getMonth() + "";
				if (month.length<2)	month = "0" + month;		
				var day = "01" + "/" + month + "/" + parseInt(date.getFullYear(),10);
				if (month == "00") month = "12";
				eventsDate.loadEventsMonth($(localThis.input),parseInt(month,10));
			});	
			var dateinp = fechaHoy.split('/');
    		this.todayy = new Date(dateinp[2],dateinp[1]-1,1,0,0);
			this.todayyy = new Date(this.today.getFullYear(),this.today.getMonth(),1,0,0);
			//if (this.todayyy > this.todayy) {
				this.before.click(function(e){
					var date = localThis.today;
					date.setMonth(localThis.next_m - 1, 1);
					localThis.tbody.remove();
					localThis.setdate(date.getDate() + '/' + date.getMonth() + '/' + date.getFullYear());
					var month = date.getMonth() + "";
					if (month.length<2)	month = "0" + month;		
					var day = "01" + "/" + month + "/" + parseInt(date.getFullYear(),10);
					if (month == "00") month = "12";
					eventsDate.loadEventsMonth($(localThis.input),parseInt(month,10));
				});
			//}
			var LastMonth = new Date(this.today.getFullYear(),this.next_m-2,1,0,0,0);
			var last = LastMonth.getMonth();
			// total days the last month
			var counter = 0;
			for (var b = 1; b <= 31; b++) {
			  LastMonth.setDate(b);
 				if ( LastMonth.getMonth() == last) {
 				  counter++;
 				}
			}
			this.tbody = new Element('tbody').appendTo(this.table);
			var first_day = this.today;
			var last_day = this.today;
			this.month = this.today.getMonth();
	   		var tr = new Element('tr').appendTo(this.tbody);
  			var day=0;
			/* first day week */
			first_day.setDate(1);
			var rest = (!first_day.getDay())? 6: first_day.getDay()-1;
			counter = counter - rest;
			for (var i= this.config.Lng.first; i <= 6; i++) {
				if (first_day.getDay() == i) {
					break;
				} else {
					counter++;
					LastMonth.setDate(counter);
					if (LastMonth.getMonth() == this.today.getMonth()) LastMonth.setMonth(this.today.getMonth()-1);
					this.create_td(tr,counter,LastMonth,'noday');
				}
   			}
			(this.config.Lng.first)? brea_k = 1:brea_k = 0;
			/* everydays */
			var date_s = this.today;
			var class_Css;
			var brea_k; // breaking week
			var daycounter = 0;
			for (var i = 1; i <= 31; i++) {
    			date_s.setDate(i);
 				if (date_s.getMonth() == this.month) {
	       			daycounter++;
			      	if (date_s.getDay() == brea_k) {
						var tr = new Element('tr').appendTo(this.tbody);
					}
					class_Css = (!date_s.getDay())? 'sunday' : '';
					
					this.create_td(tr,i,date_s,class_Css);
				}
			}
			this.today.setMonth(this.month);
	       	this.today.setDate(daycounter);
	       	var NextMonth = new Date(this.today.getFullYear(),this.today.getMonth()+1,1,0,0,0);
			// finish month
			var num = date_s.getDay();
			num = (brea_k)? 7 - num: 6 - num;
			var b;
			b = (brea_k)? 0 : 6 ;
	        if (this.today.getDay() != b) {
				for (var i= 1; i <= (num); i++) {
					NextMonth.setDate(i);
					this.create_td(tr,i,NextMonth,'noday');
				}
	    	}
	    	this.div.insertAfter($(this.input));
	    },
		create_td: function(tr,i,date,class_Css) {
			var localThis = this;
			var td = new Element('td');
			if (date) {
				var dia = date.getDate();
				var mes = (date.getMonth()+1);
				//  9 to 09 or another number <= 9
				if (dia <= 9) dia = "0"+ dia;
				if (mes <= 9) mes = "0"+ mes;
				//if (serverData.eventsDays.length == 5)
				td.attr('id', dia + '/'+ mes +'/'+	date.getFullYear());
				//else
				//var xxxxx = serverData.eventsDays.length;
				var sw = true;
				
				for (var j=0;j<serverData.eventsDays.length;j++){
					var xx = serverData.eventsDays[j].split("/");
					xx = xx[0] + "" + xx[1] + "" + xx[2];
					xx = parseInt(xx,10);
					
					var yy =  td.attr('id').split("/");
					yy =  yy[0] + "" + yy[1] + "" + yy[2];
					yy = parseInt(yy,10);
					
					if (xx == yy){
						td.addClass('eventDay');
						sw = false;
					}
				}
        	}
			if (class_Css != 'noday') {
				if (!sw) {
					td.click(function(e){
						var day = td.attr('id');
						eventsDate.loadEventsDay($(localThis.input), day);
					});
					td.mouseover(function(e){td.addClass('dayselected');});
					td.mouseout(function(e){td.removeClass('dayselected');});
				}
			}
			if (class_Css) td.addClass(class_Css);
			// Today ??
			var today = new Date();
			today = fechaHoy;
			var mes = date.getMonth() + 1;
			var dia = date.getDate();
			if (dia <= 9) dia = "0"+ dia;
			if (mes <= 9) mes = "0"+ mes;		
			if (date) var date_td = dia + "/" + mes + "/" + date.getFullYear();
			if (today == date_td) td.addClass('isToday');
			td.html(i);
			td.appendTo(tr);
		},
		validate_date: function (date) {
		  		var regex = /^(\d{1,2})\/(\d{1,2})\/(\d{4})$/;
		  		return (date.match(new RegExp(regex)) == null)? false: true;
		}
});