/**
 * jCalendar 0.5
 *
 * Some code based on jQuery Date Picker (http://kelvinluck.com/assets/jquery/datePicker/)
 *
 * Copyright (c) 2007 Theodore Serbinski (http://tedserbinski.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 */

$.fn.jcalendar = function(options) {
    var opts = $.extend({}, $.fn.jcalendar.defaults, options);
	
	this.each(function() {
		/*var day = $(this).find('select.jcalendar-select-day');
		var month = $(this).find('select.jcalendar-select-month');
		var year = $(this).find('select.jcalendar-select-year');*/
		var day = $(this).find('.jcalendar-select-day');
		var month = $(this).find('.jcalendar-select-month');
		var year = $(this).find('.jcalendar-select-year');
//		$('div.jcalendar-selects').after('<div class="jcalendar"></div>');
		
		jQuery.jcalendar.setDateWindow(this, opts.a, year,opts);
		jQuery.jcalendar.show(this, day, month, year,opts);
		
		day.change(function() {
			// only if a valid day is selected
			if (this.value > 0) {
				d = new Date(year.val(), month.val()-1, this.value);
				alert(0);
				jQuery.jcalendar.changeMonth(d, opts.a, day, month, year,opts);
			}
		});
		
		month.change(function() {
		// only if a valid month is selected
			if (this.value > 0) {
				d = new Date(year.val(), this.value-1, 1);
				jQuery.jcalendar.changeMonth(d, opts.a, day, month, year,opts);
			}
		});
		
		year.change(function() {
		// only if a valid year is selected
			if (this.value > 0) {
				d = new Date(this.value, month.val()-1, 1);
				jQuery.jcalendar.changeMonth(d, a, day, month, year,opts);
			}
		});
	});
	return this;
};

$.fn.jcalendar.defaults = {
	a:'',
	months:{0:'January',1:'February',2:'March',3:'April',4:'May',5:'June',6:'July',7:'August',8:'September',9:'October',10:'November',11:'December'},
	days:{0:'S', 1:'M', 2:'Tu', 3:'W', 4:'Th', 5:'F', 6:'S'},
	navLinks:{p:'Prev', n:'Next', t:'Today'},
	tipo:2,
	etichettaMonth:'',
	etichettaYear:'',
	boxDescrizione:''
};

jQuery.jcalendar = function(options) {
	var months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
	var days = ['S', 'M', 'Tu', 'W', 'Th', 'F', 'S'];
	var navLinks = {p:'Prev', n:'Next', t:'Today'};
	var _firstDayOfWeek;
	var _firstDate;
	var _lastDate;
	var _selectedDate;

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

	var _eventiArray = function(eventi) {
		var eventi_mese=new Array;
		
		for(data_ev in eventi){
//			alert(data_ev+' '+eventi[data]);
//			alert(data_ev+' '+eventi[data_ev]);
			evento_giorno=data_ev.substr(6,2);
			evento_mese=data_ev.substr(4,2);
			evento_anno=data_ev.substr(0,4);
			var evento_data = new Date(evento_anno,evento_mese-1,evento_giorno);

			eventi_mese[evento_giorno]='';
//			alert(typeof(eventi[data_ev]));
			if(typeof(eventi[data_ev])=='object'){
				for(titolo in eventi[data_ev]){
//					alert(eventi[data_ev][titolo]);
					eventi_mese[evento_giorno]+=eventi[data_ev][titolo];
				}
			}else{
				eventi_mese[evento_giorno]+=eventi[data_ev];
			}
		}
		
		return eventi_mese;
	}
	
	var _getEventi = function(month,year,tipo,divClass) {
		$('.'+divClass).find('div.jcalendar table').fadeTo(1,0.33);
		eventi= $.getJSON(
			"/include/getEventi.php", 
			{
				month:month,
				year:year,
				tipo:tipo,
				divClass:divClass
			},
			_getEventiCallback
		);
	}
	
	var _getEventiCallback = function(data) {
		eventi_mese=_eventiArray(data.eventi);
		
		for (giorno in eventi_mese){
			box_evento='';
			box_evento+='<div class="boxEvento">';
			box_evento+=eventi_mese[giorno];
			box_evento+='</div>';
			
//			alert("div."+data.divClass+" > td > a:contains('"+giorno+"')");
			$("div."+data.divClass+"").find("td > a:contains('"+giorno+"')").after(box_evento);
			$("div."+data.divClass+"").find("td > a:contains('"+giorno+"')").addClass('selected');
		}
		$('.'+data.divClass).find('div.jcalendar table').fadeTo(1,1);
	}
	
	var _drawCalendar = function(dateIn, a, day, month, year,opts) {
//		jQuery.jcalendar.setLanguageStrings(days_it_IT,months_it_IT,navLinks_it_IT);
		var today = new Date();
		var d;
		if (dateIn == undefined) {
			// start from this month.
			d = new Date(today.getFullYear(), today.getMonth(), 1);
			year.val(today.getFullYear());
			month.val(today.getMonth()+1);
			day.val(today.getDate());
		}else{
			// start from the passed in date
			d = dateIn;
			d.setDate(1);
		}
		
		// check that date is within allowed limits
		if ((d.getMonth() < _firstDate.getMonth() && d.getFullYear() == _firstDate.getFullYear()) || d.getFullYear() < _firstDate.getFullYear()) {
			d = new Date(_firstDate.getFullYear(), _firstDate.getMonth(), 1);
		}else if ((d.getMonth() > _lastDate.getMonth() && d.getFullYear() == _lastDate.getFullYear()) || d.getFullYear() > _lastDate.getFullYear()) {
			d = new Date(_lastDate.getFullYear(), _lastDate.getMonth(), 1);
		}
		
		var firstMonth = true;
		var firstDate = _firstDate.getDate();
		
		// create prev and next links
		if (!(d.getMonth() == _firstDate.getMonth() && d.getFullYear() == _firstDate.getFullYear())) {
			// not in first display month so show a previous link
			firstMonth = false;
			var lastMonth = d.getMonth() == 0 ? new Date(d.getFullYear()-1, 11, 1) : new Date(d.getFullYear(), d.getMonth()-1, 1);
			var prevLink = jQuery('<a href="" class="link-prev">&lsaquo; '+ opts.navLinks.p +'</a>').click(function() {
				jQuery.jcalendar.changeMonth(lastMonth, a, day, month, year,opts);
				return false;
			});
		}
		
		var finalMonth = true;
		var lastDate = _lastDate.getDate();
		
		if (!(d.getMonth() == _lastDate.getMonth() && d.getFullYear() == _lastDate.getFullYear())) {
			// in the last month - no next link
			finalMonth = false;
			var nextMonth = new Date(d.getFullYear(), d.getMonth()+1, 1);
			var nextLink = jQuery('<a href="" class="link-next">'+ opts.navLinks.n +' &rsaquo;</a>').click(function() {
				jQuery.jcalendar.changeMonth(nextMonth, a, day, month, year,opts);
				return false;
			});
		}
		
		var todayLink = jQuery('<a href="" class="link-today">'+ opts.navLinks.t +'</a>').click(function() {
			day.val(today.getDate());
			jQuery.jcalendar.changeMonth(today, a, day, month, year,opts);
			return false;
		});
		
		// update the year and month select boxes
		$('#'+opts.etichettaMonth).text(opts.months[d.getMonth()+1]);
		$('#'+opts.etichettaYear).text(d.getFullYear());
		year.val(d.getFullYear());
		month.val(d.getMonth()+1);
		
		var headRow = jQuery("<tr></tr>");
		for (var i=_firstDayOfWeek; i<_firstDayOfWeek+7; i++) {
			var weekday = i%7;
			var wordday = opts.days[weekday];
			headRow.append('<th scope="col" abbr="'+ wordday +'" title="'+ wordday +'" class="'+ (weekday == 0 || weekday == 6 ? 'weekend' : 'weekday') +'">'+ wordday +'</th>');
		}
		headRow = jQuery("<thead></thead>").append(headRow);
		
		var tBody = jQuery("<tbody></tbody>");
		var lastDay = (new Date(d.getFullYear(), d.getMonth()+1, 0)).getDate();
		var curDay = _firstDayOfWeek - d.getDay();
		if (curDay > 0) curDay -= 7;
		
		var todayDate = today.getDate();
		var thisMonth = d.getMonth() == today.getMonth() && d.getFullYear() == today.getFullYear();
		
		// render calendar
		do {
			var thisRow = jQuery("<tr></tr>");
			for (var i=0; i<7; i++) {
				var weekday = (_firstDayOfWeek + i) % 7;
				var atts = {'class':(weekday == 0 || weekday == 6 ? 'weekend ' : 'weekday ')};
				
				curDayStr=(curDay+1)<10?'0'+(curDay+1):(curDay+1);
				if (curDay < 0 || curDay >= lastDay) {
					dayStr = ' ';
				}else if (firstMonth && curDay < firstDate-1) {
					dayStr = curDayStr;
					atts['class'] += 'inactive';
				}else if (finalMonth && curDay > lastDate-1) {
					dayStr = curDayStr;
					atts['class'] += 'inactive';
				}else {
					d.setDate(curDay+1);
					
					// attach a click handler to every day to select it if clicked
					// we use the rel attribute to keep track of the day that is being clicked
					dayStr = jQuery('<a href="" rel="'+ d +'">'+ (curDayStr) +'</a>').click(function(e) {
/*						if (_selectedDate) {
							_selectedDate.removeClass('selected');
						}*/
						_selectedDate = jQuery(this);
/*						_selectedDate.addClass('selected');*/
						day.val(new Date(_selectedDate.attr('rel')).getDate());
						return false;
					}).bind('mouseover',function(){
//						$(this).next(".boxEvento").fadeIn('slow');	
						if($(this).next(".boxEvento").html()!=null)
							$('#'+opts.boxDescrizione).html($(this).next(".boxEvento").html()).fadeIn('slow');					
					}).bind('mouseout',function(){
//						$(this).next(".boxEvento").animate({opacity: 1.0}, 3000).fadeOut('slow');				
//						if($(this).next(".boxEvento").html()!=null)
//							$('#'+opts.boxDescrizione).html($(this).next(".boxEvento").html()).animate({opacity: 1.0}, 3000).fadeOut('slow');					
					});
			
/*					// highlight the current selected day
					if (day.val() == d.getDate()) {
						_selectedDate = dayStr;
						_selectedDate.addClass('selected');
					}*/
				}
			
				if (thisMonth && curDay+1 == todayDate) {
					atts['class'] += 'today';
				}
				thisRow.append(jQuery("<td></td>").attr(atts).append(dayStr));
				

				curDay++;
			}
			
			tBody.append(thisRow);
		} while (curDay < lastDay);
		
		
		$(a).find('div.jcalendar').html('<table cellspacing="1"></table><div class="jcalendar-links"></div>');
		$(a).find('div.jcalendar table').append(headRow, tBody);
		$(a).find('div.jcalendar > div.jcalendar-links').append(prevLink, todayLink, nextLink);
		/*jQuery('div.jcalendar').html('<table cellspacing="1"></table><div class="jcalendar-links"></div>');
		jQuery('div.jcalendar table').append(headRow, tBody);
		jQuery('div.jcalendar > div.jcalendar-links').append(prevLink, todayLink, nextLink);*/

		eventi=_getEventi(d.getMonth()+1,d.getFullYear(),opts.tipo,$(a).get(0).className);
	};

	return {
		show: function(a, day, month, year,opts) {
			_firstDate = a._startDate;
			_lastDate = a._endDate;
			_firstDayOfWeek = a._firstDayOfWeek;
			
			// pass in the selected form date if one was set
			var selected;
			if (year.val() > 0 && month.val() > 0 && day.val() > 0) {
				selected = new Date(year.val(), month.val()-1, day.val());
			}else {
				selected = null;
			}
			_drawCalendar(selected, a, day, month, year,opts);
		},
		changeMonth: function(d, e, day, month, year,opts) {
			_drawCalendar(d, e, day, month, year,opts);
		},
		/**
		* Function: setLanguageStrings
		*
		* Allows you to localise the calendar by passing in relevant text for the english strings in the plugin.
		*
		* Arguments:
		* days		-	Array, e.g. ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']
		* months	-	Array, e.g. ['January', 'Febuary', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
		* navLinks	-	Object, e.g. {p:'Prev', n:'Next', c:'Close', b:'Choose date'}
		**/
		setLanguageStrings: function(aDays, aMonths, aNavLinks) {
			days = aDays;
			months = aMonths;
			navLinks = aNavLinks;
		},
		/**
		* Function: setDateWindow
		*
		* Used internally to set the start and end dates for a given date select
		*
		* Arguments:
		* i			-	The id of the INPUT element this date window is for
		* w			-	The date window - an object containing startDate and endDate properties
		*				e.g. {startDate:'24-11-1981', endDate:'25-12-2012}
		**/
		setDateWindow: function(i, w, year,opts) {
			if (w == undefined) w = {};
			if (w.startDate == undefined) {
				// set the minimum browseable date equal to January of the min year in the select box
				// don't get the first option because that is an empty year
				
				// note we can't do this: year.find('option:eq(1)').val()
				// it doesn't work in 1.0 since find() is destructive
				// so we copy the object to a new var
//				i._startDate = new Date($(year).find('option:eq(1)').val(), 0, 1);
				i._startDate = new Date(2005, 0, 1);
			}else {
				dateParts = w.startDate.split('-');
				i._startDate = new Date(dateParts[2], Number(dateParts[1])-1, Number(dateParts[0]));
			}
			if (w.endDate == undefined) {
				// set the maximum browseable date equal to December of the max year in the select box
				
				// note we can't do this: year.find('option:last').val()
				// it doesn't work in 1.0 since find() is destructive
				// so we copy the object to a new var
//				i._endDate = new Date($(year).find('option:last').val(), 11, 1);
				oggi=new Date();
				i._endDate = new Date(oggi.getFullYear()+2, 11, 1);
			}else {
				dateParts = w.endDate.split('-');
				i._endDate = new Date(dateParts[2], Number(dateParts[1])-1, Number(dateParts[0]));
			}
			i._firstDayOfWeek = w.firstDayOfWeek == undefined ? 0 : w.firstDayOfWeek;
		}
	};
}();

var months_it_IT = [
	'Gennaio', 
	'Febbraio', 
	'Marzo', 
	'Aprile', 
	'Maggio', 
	'Giugno', 
	'Luglio', 
	'Agosto', 
	'Settembre', 
	'Ottobre', 
	'Novembre', 
	'Dicembre'
];
var days_it_IT = [
	'D', 
	'L', 
	'Ma', 
	'Me', 
	'G', 
	'V', 
	'S'
];
var navLinks_it_IT = {
	p:'Precedente', 
	n:'Successivo', 
	t:'Oggi'
};
/*
var eventi={
	20080526:'Festa',
	20080528:[
		'Exposanita',
		'Ri-expo'
	],
	20080615:'Exposanita'
}*/
/*var eventi = new Array;
eventi[20080526]='Festa';
eventi[20080528]='Exposanita';
eventi[20080528]='Exposanita';*/