window.auto_close_popup = false;
if(window.calendar_variable == undefined){
	window.calendar_variable = {};
	window.calendar_variable.is_chinese = ( I18n && I18n.locale.indexOf('zh') != -1 );
	window.calendar_variable.date_type = 0;
}else{
	if(window.calendar_variable.date_type == 1){
		window.calendar_variable.is_chinese = false;
	}else{
		window.calendar_variable.is_chinese = ( I18n && I18n.locale.indexOf('zh') != -1 );
	}
}
if(!(window.calendar_variable.dayNames)){
	if(window.calendar_variable.is_chinese){
		window.calendar_variable.dayNames = ['週日', '週一', '週二', '週三','週四', '週五', '週六'];
		window.calendar_variable.dayNamesShort = ['日', '一', '二', '三','四', '五', '六'];
	}else{
		window.calendar_variable.dayNames = ['Sunday', 'Monday', 'Tuesday', 'Wednesday','Thursday', 'Friday', 'Saturday'];
		window.calendar_variable.dayNamesShort = ['Sun', 'Mon', 'Tue', 'Wed','Thu', 'Fri', 'Sat'];
	}
}
if(Array.prototype.rotate == undefined){
	Array.prototype.rotate = function(n) {
		n = n % this.length;
		while (this.length && n < 0) n += this.length;
		this.push.apply(this, this.splice(0, n));
		return this;
	}
}
if(window.calendar_variable.is_chinese){
	window.calendar_variable.months = [];
	for(var i=0;i<12;i++){
		window.calendar_variable.months.push((i+1)+"月");
	}
}else{
	window.calendar_variable.months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
}
if(window.calendar_variable.date_type == 2){
	window.calendar_variable.month_year_format = calendar_variable.is_chinese ? 'yy/MM' : 'MM/yy';
	window.calendar_variable.date_format = calendar_variable.is_chinese ? 'yy/MM/dd' : 'dd/MM/yy';
	window.calendar_variable.date_format_with_short_month = calendar_variable.is_chinese ? 'yy/MM/dd' : 'dd/MM/yy';
	window.calendar_variable.date_format_with_week = calendar_variable.is_chinese ? 'yy/MM/dd (W)' : 'W, MM/dd/yy';
	window.calendar_variable.short_date = (calendar_variable.is_chinese ? "MM/dd (W)" : "W, dd/MM");
	if(window.calendar_variable.time_type == 1){
		window.calendar_variable.datetime_format = calendar_variable.is_chinese ? 'yy/MM/dd H:m' : 'dd/MM/yy H:m';
		window.calendar_variable.short_date_time = (calendar_variable.is_chinese ? "MM/dd (W) H:m" : "W, dd/MM H:m");
	}else{
		window.calendar_variable.datetime_format = calendar_variable.is_chinese ? 'yy/MM/dd b h:m' : 'dd/MM/yy h:m b';
		window.calendar_variable.short_date_time = (calendar_variable.is_chinese ? "MM/dd (W) b h:m" : "W, dd/MM h:m b");
	}
}else{
	window.calendar_variable.month_year_format = calendar_variable.is_chinese ? 'y MMM' : 'MMM y';
	window.calendar_variable.date_format = calendar_variable.is_chinese ? 'y MMM d' : 'd MMM, y';
	window.calendar_variable.date_format_with_short_month = calendar_variable.is_chinese ? 'y M d' : 'd M, y';
	window.calendar_variable.date_format_with_week = calendar_variable.is_chinese ? 'y MMM d (W)' : 'W, MMM d, y';
	window.calendar_variable.short_date = (calendar_variable.is_chinese ? "MMM d (W)" : "W, d MMM");
	if(window.calendar_variable.time_type == 1){
		window.calendar_variable.datetime_format = calendar_variable.is_chinese ? 'y MMM d H:m' : 'd MMM, y H:m';
		window.calendar_variable.short_date_time = (calendar_variable.is_chinese ? "MMM d (W) H:m" : "W, d MMM H:m");
	}else{
		window.calendar_variable.datetime_format = calendar_variable.is_chinese ? 'y MMM d b h:m' : 'd MMM, y h:m b';
		window.calendar_variable.short_date_time = (calendar_variable.is_chinese ? "MMM d (W) b h:m" : "W, d MMM h:m b");
	}
}
window.calendar_variable.date_format_numeric = 'yy/MM/dd';
window.calendar_variable.short_date_numeric = (calendar_variable.is_chinese ? "MM/dd (w)" : "w MM/dd");
if(window.calendar_variable.time_type == 1){
	window.calendar_variable.time_format = "H:m";
}else{
	window.calendar_variable.time_format = (calendar_variable.is_chinese ? "b h:m" : "h:m b");
}
window.calendar_variable.std_date_format = 'y-MM-d';
window.calendar_variable.short_day = (calendar_variable.is_chinese ? "d (W)" : "W d");
$.fn.fullCalendar = function(args){
	var self = this[0]
	if(!self.calendar_args)
		self.calendar_args = args;
	else
		args = Object.assign(self.calendar_args, args);
	var calendar = new FullCalendar.Calendar(self,args);
	calendar.render();
	$(window).on("load",function(){
		calendar.render();
	})
	this.calendar = calendar;
	self.calendar = calendar;
	$.fullCalendar = calendar;
	return calendar;
};
function correct_date(date){
	var new_date = new Date();
	new_date.setTime(date.getTime() + date.getTimezoneOffset() * 60 * 1000);
	return new_date;
}
FullCalendar.Calendar.prototype.get_all_events = function(){
	this.currentData.all_events = [];
	var all_events = this.currentData.all_events;
	if(this.currentData.eventStore && this.currentData.eventStore.instances){
		var instances = this.currentData.eventStore.instances;
		Object.keys(instances).forEach(function(k){
			var instance = instances[k];
			var range = Object.assign({},instance.range);
			range.start = correct_date(range.start);
			range.end = correct_date(range.end);
			all_events.push(range);
		})
	}
	return this.currentData.all_events;
}
FullCalendar.Calendar.prototype.isAnOverlapEvent = function(eventStartDay, eventEndDay){
	eventStartDay = eventStartDay || eventEndDay;
	eventEndDay = eventEndDay || eventStartDay;
	if((typeof(eventStartDay)).toLowerCase() == "string")
		eventStartDay = new Date(eventStartDay);
	if((typeof(eventEndDay)).toLowerCase() == "string")
		eventEndDay = new Date(eventEndDay);
	var events = this.get_all_events();
	for (var i = 0; i < events.length; i++) {
		  var eventA = events[i];
		  // start-time in between any of the events
		  if (eventStartDay >= eventA.start && eventStartDay <= eventA.end) {
				return true;
		  }
		  //end-time in between any of the events
		  if (eventEndDay >= eventA.start && eventEndDay <= eventA.end) {
				return true;
		  }
		  //any of the events in between/on the start-time and end-time
		  if (eventStartDay <= eventA.start && eventEndDay >= eventA.end) {
				return true;
		  }
	 }
	 return false;
}

window.getDateString = function(date, format, is_chinese) {
	var months = calendar_variable.months;
	var week_days = calendar_variable.dayNames;
	var getPaddedComp = function(comp) {
		return ((parseInt(comp) < 10) ? ('0' + comp) : comp)
	},
	formattedDate = format,
	y = date.getFullYear(),
	m = date.getMonth(),
	d = date.getDate(),
	H = date.getHours(),
	M = date.getMinutes(),
	s = date.getSeconds(),
	S = date.getMilliseconds(),
	month_name = months[m],
	am_trans = (calendar_variable.is_chinese ? '上午' : 'AM'),
	pm_trans = (calendar_variable.is_chinese ? '下午' : 'PM'),
	o = {
		"yy+": y, //raw year
		"y+": y + (calendar_variable.is_chinese ? "年" : ""), // year
		"MMM+": month_name, //month
		"MM+": getPaddedComp(m + 1), //raw month
		"M+": month_name.substring(0,3), //month
		"dd+": getPaddedComp(d), //raw day
		"d+": (calendar_variable.is_chinese ? (d + "日")  : getPaddedComp(d)), //day
		"W+": week_days[date.getDay()], //weekday
		"w+": (calendar_variable.is_chinese ? week_days[date.getDay()].substr(-1, 1) : week_days[date.getDay()].substr(0, 3)), //weekday
		"h+": getPaddedComp((H > 12) ? H % 12 : H), //hour
		"H+": getPaddedComp(H), //hour
		"m+": getPaddedComp(M), //minute
		"s+": getPaddedComp(s), //second
		"S+": getPaddedComp(S), //millisecond,
		"b+": (H >= 12) ? pm_trans : am_trans
	};
	for (var k in o) {
		if (new RegExp("(" + k + ")").test(format)) {
			formattedDate = formattedDate.replace(RegExp.$1, o[k]);
		}
	}
	return formattedDate;
};
var Calendar = function(dom,page_id,event_date=''){

	var c = this;
	this.title = $("#current_title");
	this.calendar_dom = $(dom);
	this.nextBtn = $("#next_month_btn");
	this.prevBtn = $("#prev_month_btn");
	this.todayBtn = $("#today_btn");
	this.modeBtns = $(".calendar_mode button");
	this.refreshBtn = $("#refresh_btn");
	this.dialog = new EventDialog(c);
	this.loading = $('#calendar-loading');
	this.agenda_space = $("#calendar_agenda");
	this.currentView = "dayGridMonth";
	this.page_id = page_id;
	this.navigation = $("#navigation");
	this.rangeSelection = $("#range_selection");
	var agendaView = new AgendaView(c);
	var loadeventsonviewchange = false;
	this.success_event = null;
	this.eventDataTransform = function(eventData){
		if(eventData.allDay && eventData.end){
			var tmp = new Date(eventData.end);
			tmp.setTime(tmp.getTime() + 86400000); // Add one day for displaying
			eventData.end = tmp.toISOString();
			//eventData.end = eventData.end;
		}
		return eventData;
	};
	this.initialize = function(){
		if (event_date != ''){
			var event_dates = event_date.split("-");
			var date = new Date(Date.UTC(event_dates[0],event_dates[1],event_dates[2]));
		}else{
			var date = new Date();
		}
		var d = date.getDate();
		var m = date.getMonth();
		var y = date.getFullYear();
		var dview = (c.currentView == "agenda" ? "dayGridMonth" : c.currentView);
		c.calendar_dom.css("overflow","visible");
		c.calendar_dom.fullCalendar({
			themeSystem: 'bootstrap',
			editable: false,
			selectable: true,
			width: "100%",
			height: $("body").height() - 141,
			events:  function(args, success_callback, fail_callback) {
				var start = args.start;
				var end = args.end;
				$.ajax({
					url: "/xhr/calendars/events.json?page_id="+c.page_id+"&locale="+I18n.locale,
					dataType: 'json',
					type: 'GET',
					data: {
						start: Math.round(start.getTime() / 1000),
						end: Math.round(end.getTime() / 1000),
						_: Date.now()
					},
					success: function(json) {
						// json = json.map(function(obj){
						// 	obj.start = new Date(obj.start).toJSON();
						// 	obj.end = new Date(obj.end).toJSON();
						// 	return obj;
						// })
						success_callback(json);
					}
				});
			},
			eventDataTransform: c.eventDataTransform,
			// events: 'https://fullcalendar.io/demo-events.json',
			headerToolbar: false,
			fixedWeekCount: false,
			initialView: dview,
			loading: function(bool) {
				if (bool) c.loading.show();
				else c.loading.hide();
				if(this.currentData)
					$('#current_title').html(this.currentData.viewTitle);
			},
			windowResize : function(view){
				c.calendar_dom.calendar.refetchEvents();
			},
			eventTimeFormat: { hour12: (window.calendar_variable.time_type != 1), hour: '2-digit', minute: '2-digit', omitZeroMinute: true, meridiem: 'narrow' },
			eventClick: function(eventClickInfo) {
				var calEvent = {"event": eventClickInfo.event},
					originalEvent = eventClickInfo.jsEvent,
					view = eventClickInfo.view,
					el = $(eventClickInfo.el);
				if(el.hasClass("reserve_btn")){
    				window.calEvent = calEvent;
    				var start_time = calEvent.event.start;
    				var date_str = window.getDateString(start_time,std_date_format);
    				c.dialog.hide();
    				var allow_times = calEvent.event._def.extendedProps.allow_times;
    				window.pick_hire_date(date_str,allow_times);
    			}else{
					c.dialog.dismiss();
					c.dialog.inflate(calEvent);
					c.dialog.show({"x": originalEvent.clientX,"y": originalEvent.clientY});
				}
			},
			dateClick: function(ev) {
    			var calendar = this;
    			var calendar_dom = $(this.el);
    			if(c.calendar_dom.hasClass("active_picker")){
    				var date = ev.date,
    				date_str = getDateString(date,date_time_str_format),
	    			day_element = ev.dayEl,
	    			jsEvent = ev.jsEvent;
	    			var time_str = date_str.split(" ")[1];
	    			var date_str = date_str.split(" ")[0];
    				calendar_dom.trigger("init_time",[time_str]);
    				calendar_dom.trigger("select_time",[date_str]);
    			}
    		},
			views: {
				timeGridDay: {
					titleFormat: function(date_info){
						var date = date_info.date.marker;
						return getDateString(date, calendar_variable.date_format_with_week);
					},
					dayHeaderFormat: function(date_info){
						return window.calendar_variable.dayNames[date_info.date.marker.getDay()];
					}
				},
				timeGridWeek: {
					titleFormat: function(date_info){
						var start = date_info.start.marker,
							end = date_info.end.marker;
						return getDateString(start, calendar_variable.date_format) + ' ~ ' + getDateString(end, calendar_variable.date_format);
					},
					dayHeaderFormat: function(date_info){
						return getDateString(date_info.date.marker, calendar_variable.short_date_numeric);
					}
				},
				dayGridMonth: {
					dayMaxEvents: false,
					titleFormat: function(date_info){
						var date = date_info.date.marker;
						return getDateString(date, calendar_variable.month_year_format);
					},
					dayHeaderFormat: function(date_info){
						return window.calendar_variable.dayNamesShort[date_info.date.marker.getDay()];
					}
				}
			},
			firstDay: (window.calendar_variable.sunday_first == true ? 0 : 1)
		});
		c.nextBtn.click(function(){
			c.dialog.dismiss();
			c.calendar_dom.calendar.next();
			c.title.text(c.calendar_dom.calendar.currentData.viewTitle);
		});
		c.prevBtn.click(function(){
			c.dialog.dismiss();
			c.calendar_dom.calendar.prev();
			c.title.text(c.calendar_dom.calendar.currentData.viewTitle);
		});
		c.todayBtn.click(function(){
			c.dialog.dismiss();
			c.calendar_dom.calendar.today();
			c.title.text(c.calendar_dom.calendar.currentData.viewTitle);
		});
		c.modeBtns.click(function(){
			c.dialog.dismiss();
			toggleViews($(this).data("mode"));
		});
		c.refreshBtn.click(function(){
			c.dialog.dismiss();
			if(c.currentView == "agenda")
				agendaView.refresh();
			else
				c.calendar_dom.calendar.refetchEvents();
		});
		var toggleViews = function(view){
			c.modeBtns.removeClass("active");
			c.modeBtns.each(function(){
				if ($(this).data("mode") == view)
					$(this).addClass("active");
			});
			if(view != "agenda"){
				if(c.currentView == "agenda"){
					// $("#sec1").addClass("span3").removeClass("span7");
					$("#sec2").show();
					// $("#sec3").addClass("span4").removeClass("span5");
					agendaView.hide();
				}
				c.calendar_dom.calendar.changeView(view);
			}else{
				// $("#sec1").addClass("span7").removeClass("span3");
				$("#sec2").hide();
				// $("#sec3").addClass("span5").removeClass("span4");
				agendaView.inflate();
			}
			c.currentView = view;
			if(loadeventsonviewchange){
				c.calendar_dom.calendar.refetchEvents();
				loadeventsonviewchange = false;
			}
			c.title.text(c.calendar_dom.calendar.currentData.viewTitle);
			// c.calendar_dom.calendar.rerenderEvents(); //Rerender to fix layout
		};
		if(c.currentView == "agenda"){toggleViews("agenda");loadeventsonviewchange = true;}
	};

	this.updateEvent = function(eventStick){
		c.calendar_dom.fullCalendar("updateEvent",eventStick);
	}

	this.deleteEvent = function(delete_url,_id){
		$.ajax({
			type : "delete",
			url : delete_url,
			success : function(){
				c.calendar_dom.fullCalendar("removeEvents",[_id]);
				c.dialog.dismiss();
			}
		})
	}

	this.editEvent = function(edit_url,allDay){
		$.ajax({
			type : "get",
			url : edit_url,
			success : function(data){
				c.success_event(data,allDay,"edit",true);
				c.dialog.dismiss();
			}
		})
	}

	this.renderEvent = function(eventStick){
		if(eventStick.recurring === true)
			c.calendar_dom.calendar.refetchEvents();
		else
			c.calendar_dom.calendar.addEvent(eventStick);
	};


	$(document).ready(function() {
		c.initialize();
	});
};

var EventDialog = function(calendar,event){
	_t = this;
	var event_quick_view = null;
	var template = "";
	var _this_event = null;
	this.inflate = function(_event){
		if(!_event) throw new UserException("EventStick can't be null!");
		_event.allDay = _event.event.allDay;
		_event._start = _event.event.start;
		if(_event.event.end){
			_event._end = _event.event.end;
			if(_event.allDay){
				_event._end.setTime(_event._end.getTime() - 86400000);
			}
		}else{
			_event._end = _event.event.start;
		}
		// var start_date = getDateString(_event._start,calendar_variable.date_format);
		// var end_date = getDateString(_event._end,calendar_variable.date_format);
		_event.title = _event.event.title;
		var extendedProps = _event.event.extendedProps;
		Object.keys(extendedProps).forEach(function(k){
			_event[k] = extendedProps[k];
		})
		if(_event.hiring_person_name == undefined)
			_event.hiring_person_name = "";
		_this_event = _event;
		var start_time = "",
			end_time = "",
			time_string = null;
		if(_event.allDay) {
			start_time = getDateString(_event._start,calendar_variable.date_format_with_short_month);
			if(_event._end)
				end_time = getDateString(_event._end,calendar_variable.date_format_with_short_month);
			time_string = (_event._start === _event._end || !_event._end ? "<p class='start-date'><i class='icons-calendar' /></i>" + start_time + "</p>" : "<i class='icons-calendar' /></i>" + start_time + "<br><i class='icons-arrow-right-5' /></i>" + end_time + "");
		} else {
			start_time = getDateString(_event._start,calendar_variable.date_format_with_short_month);
			end_time = getDateString(_event._end,calendar_variable.date_format_with_short_month);
			var stime = getDateString(_event._start,calendar_variable.time_format),
			etime = getDateString(_event._end,calendar_variable.time_format),
			same = (start_time == end_time);
			if( same ){
				time_string = "<p class='date'><i class='icons-calendar' /></i> " + 
								start_time + 
								"</p><p class='time'><i class='icons-clock' /></i> " + stime + 
								" <i class='icons-arrow-right-5' /></i> " + etime ;
			}else{
				time_string = "<i class='icons-calendar' /></i><span class='start-date'>" + start_time + " " + stime + 
					"</span><br><i class='icons-arrow-right-5' /></i><span class='end-date'>" + 
					end_time + " " + etime + "</span>"
			}
			// time_string = (same ? "<p class='date'><i class='icons-calendar' /> " + start_time + "</p><p class='time'><i class='icons-clock' /> " + stime + " <i class='icons-arrow-right-5' /> " + etime : "<p class='start-date'><i class='icons-arrow-right-2' /> " + start_time + "<span class='pull-right'>" + stime + "</span></p><p class='end-date'><i class='icons-arrow-left-2' /> " + end_time + "<span class='pull-right'>" + etime + "</p>");
		}
		event_quick_view = $('<div class="calendar-modal" style="display:none;"></div>');
		template = '<div class="modal-content">' +
								'<div class="modal-header">' +
									'<button type="button" class="close event-close-btn" data-dismiss="modal" aria-hidden="true">&times;</button>' +
									'<h3>' + (_event.url_linked=='' ? _event.title : ("<a href=\"" +_event.url_linked+"\">"+_event.title+"</a>")) + '</h3>' +
								'</div>' +
								'<div class="modal-body">' +
									'<div class="event_summary">' + time_string + '</br>' + _event.hiring_person_name + '</div>' + _event.note +
										(_event.error_message ? ("<br><span style=\"color: #FC4040;\">" + _event.error_message + "</span>") : "")
								'</div>' +
								'<div class="modal-footer" />' +
							 '</div>';
	}

	this.esc_keydown = function(e){
		var code = e.keyCode || e.which;
		if( code ==27 ){
			_t.hide();
		}
	}
	this.show = function(pos){
		event_quick_view.css({display: 'inline-block',width: '',height: '', position: "fixed", "z-index": "10000"});
		var offset;
		var padding = 20;
		if(pos){
			offset = {"left":pos.x,"top":pos.y};
			var pos = getPosition(pos);
			event_quick_view.css(offset);
		}else{
			offset = {"left": padding, "top": padding};
		}
		event_quick_view.html(template).appendTo("body").show();
		event_quick_view.find(".event-close-btn").one("click",function(){_t.dismiss();});
		event_quick_view.find("a.delete").one("click",function(){calendar.deleteEvent(_this_event.delete_url,_this_event._id);return false;});
		event_quick_view.find("a.edit").one("click",function(){calendar.editEvent(_this_event.edit_url,_this_event.allDay);return false;});
		var window_width = $(window).width(),
			window_height = $(window).height();
		var dialog_width =  event_quick_view.width(),
			dialog_height =  event_quick_view.height();
		var new_offset = Object.assign({},offset);
		var need_redisplay = false;
		var new_width = null, new_height = null;
		var padding_top = padding + 40;
		if(offset.left + dialog_width > window_width){
			new_offset.left = window_width - dialog_width - padding;
			need_redisplay = true;
		}
		if(new_offset.left < padding){
			new_width = dialog_width - (padding - new_offset.left);
			new_offset.left = padding;
			need_redisplay = true;
		}
		if(offset.top + dialog_height > window_height){
			new_offset.top = window_height - dialog_height - padding;
			need_redisplay = true;
		}
		if(new_offset.top < padding_top){
			new_height = dialog_height - (padding_top - new_offset.top);
			new_offset.top = padding_top;
			need_redisplay = true;
		}
		if(need_redisplay){
			event_quick_view.css(new_offset);
			event_quick_view.width(new_width);
			event_quick_view.height(new_height);
		}
		$(document).off("keydown", _t.esc_keydown);
		$(document).on("keydown", _t.esc_keydown);
	}
	this.hide = function(){
		calendar.calendar_dom.find('.fc-popover-close').click();
		$(event_quick_view).hide();
	}
	this.dismiss = function(){
		if(event_quick_view)
			event_quick_view.remove();
	}

	var getPosition = function(pos){
		var x = pos.x,
			y = pos.y,
			winheight = $(window).height();
		if((x + event_quick_view.width()) > $(window).width()){
			x = x - event_quick_view.width();
		}
		if((y + event_quick_view.height()) > winheight){
			y = y - event_quick_view.height();
		}
		return {"x":x,"y":y};
	}

	if(event)
		_t.inflate(event);
}

var UserException = function(message) {
	this.message = message;
	this.name = "UserException";
	this.toString = function(){
		return this.message;
	}
}

var AgendaView = function(calendar){
	var av = this;
	var _calendar = calendar;
	var agenda_space = _calendar.agenda_space;
	var today = new Date();
	var minDifference = 6;
	var start_month = today.getMonth();
	var start_year = today.getFullYear();
	var end_month = ((start_month + minDifference) > 11 ? (start_month + minDifference) - 11 : start_month + minDifference);
	var end_year = ((start_month + minDifference) > 11 ? start_year+1 : start_year);
	var monthNames = window.calendar_variable.months;
	var month_template =  '<div class="col-md-4">' +
													'<h4></h4>' +
													'<div class="tiny_calendar">' +
														'<table class="table table-condensed table-bordered">' +
															'<tbody>' +
																'<tr>' +
																	calendar_variable.dayNamesShort.slice(0).rotate(calendar_variable.sunday_first ? 0 : 1).map(function(title){
																		return '<th class="week_title">'+title+'</th>';
																	}).join('') +
																'</tr>' +
															'</tbody>' +
														'</table>' +
													'</div>' +
												'</div>';

	var event_list_template = '<div class="col-md-8 agenda-event">' +
																'<table class="table table-condensed table-bordered event_list">' +
																	'<thead>' +
																		'<tr>' +
																			'<th>DateTime</th>' +
																			'<th>Events</th>' +
																		'</tr>' +
																	'</thead>' +
																	'<tbody>' +
																		'<tr>' +
																			'<td colspan="3" class="no_events">No events for this month.</td>' +
																		'</tr>' +
																	'</tbody>' +
																'</table>' +
														'</div>';

	var head_template = '<div>' +
												'<label>'+(window.calendar_variable.from ? window.calendar_variable.from : 'From')+'</label>' +
												'<input class="input-large" id="agenda_start" placeholder="YYYY/MM" type="text" value="'+start_year+'/'+('0'+(start_month+1)).substr(-2,2)+'" title="YYYY/MM" autocomplete="off">'+
												'<label>'+(window.calendar_variable.to ? window.calendar_variable.to : 'To')+'</label>' +
												'<input class="input-large" id="agenda_end" placeholder="YYYY/MM" type="text" value="'+end_year+'/'+('0'+(end_month+1)).substr(-2,2)+'" title="YYYY/MM" autocomplete="off">'+
												'<button id="show_events" class="btn btn-sm bt-filter btn-primary">Show Events</button>' +
											'</div>';

	var event_template =  '<tr>' +
													'<td class="event_datetime" />' +
													'<td>' +
														'<div class="event" />' +
													'</td>' +
												'</tr>';
	// var month_template = '<div class="span4"><h4></h4><div class="tiny_calendar"><table class="table"><tbody><tr><th class="week_title">Sun</th><th class="week_title">Mon</th><th class="week_title">Tue</th><th class="week_title">Wed</th><th class="week_title">Thu</th><th class="week_title">Fri</th><th class="week_title">Sat</th></tr></tbody></table></div></div>';

	// var event_list_template = '<div class="span8"><table class="table event_list"><thead><tr height="0"><th class="span3"></th><th class="span2"></th><th class=""></th></tr></thead><tbody><tr><td colspan="3" class="no_events">No events for this month.</td></tr></tbody></table></div>';

	// var head_template = '<div><label>From</label> <select name="start_month" class="input-small"></select><select name="start_year" class="input-small"></select><label>To</label> <select name="end_month" class="input-small"></select><select name="end_year" class="input-small"></select><button id="show_events" class="btn  bt-filter">Show Events</button></div>';

	// var event_template = "<tr><th></th><td class='event_time'></td><td><div class='event'></div></td></tr>";

	var cache = false;
	var show_event_clicked = false;

	this.refresh = function(){
		av.inflate(true);
	}

	this.inflate = function(forceInflation){
		loading(true);
		_calendar.calendar_dom.hide();
		_calendar.navigation.hide();

		if(!forceInflation){
			if(cache){
				av.show();
				loading(false);
				return;
			}
		}
		
		agenda_space.empty();
		if(!show_event_clicked){
			_calendar.rangeSelection.empty();
			_calendar.rangeSelection.append(renderHead().html()).show();
			_calendar.rangeSelection.find("button#show_events").click(function(){
				show_event_clicked = true;
				var starts = $("#agenda_start").val().split("/"),
					ends = $("#agenda_end").val().split("/");
				start_month = parseInt(starts[1]) - 1;
				end_month = parseInt(ends[1]) - 1;
				start_year = parseInt(starts[0]);
				end_year = parseInt(ends[0]);
				av.inflate(true);
			})
		}
		show_event_clicked = false;
		eventsManager();
		var s = start_month,
			e = end_month
			y = start_year;
		e = (e > s && start_year == end_year? e : e + 11);
		if(end_year > start_year)
			e = e + ((end_year - start_year -1) * 12);
		else e--;
		for(var i = s;i <= e+1; i++){
			var m = new Month(s,y);
			s++;
			if(s > 11){
				s = 0;
				y++;
			}
			if(e == 0)
				agenda_space.text("Invalid Range of Dates.")
			else
				agenda_space.append(m.monthDom);
		}
		
		loading(false);
	}

	this.hide = function(){
		cache = true;
		_calendar.rangeSelection.hide();
		agenda_space.hide();
		_calendar.navigation.show();
		_calendar.calendar_dom.show();
	}

	this.show = function(){
		_calendar.rangeSelection.show();
		agenda_space.show();
	}
	var copyObject = function(x){
		return x.clone();
	}
	var eventsManager = function(){
		var url = "/xhr/calendars/index_agenda",
			sd = new Date(start_year,start_month,1),
			ed = new Date(end_year,end_month+1,0),
			usd = Math.round(sd/1000),
			ued = Math.round(ed/1000);
		$.ajax({
			type : "get",
			url : url,
			dataType : "json",
			data : {"agenda_start":sd.toLocaleString(),"agenda_end":ed.toLocaleString(),"unix_start":usd,"unix_end":ued,"subpart_id":calendar.page_id},
			success : function(data){
				data = data.events;
				$("#agenda_start,#agenda_end").datepicker({ 
					dateFormat: "yy/mm",
					onChangeMonthYear: function( year, month, inst ){
						$(this).val($.datepicker.formatDate('yy/mm', new Date(year, month-1, 1)));
					},
					gotoCurrent: true
				});
				$("#agenda_start,#agenda_end").on("focus",function(){
					var input = this;
					var inst = $(this).data("datepicker");
					var year_month = $(input).val().split("/");
					if(year_month.length == 2){
						inst.selectedYear = parseInt(year_month[0]);
						inst.selectedMonth = parseInt(year_month[1]) - 1;
						inst.drawYear = inst.selectedYear;
						inst.drawMonth = inst.selectedMonth;
						inst.currentYear = inst.selectedYear;
						inst.currentMonth = inst.selectedMonth;
					}
					$.datepicker._updateDatepicker(inst);
				})
				$("#agenda_start,#agenda_end").focus(function () {
					  $(".ui-datepicker-calendar").hide();
					  $("#ui-datepicker-div").position({
							my: "center top",
							at: "center bottom",
							of: $(this)
					  });
				 });
				$.each(data,function(i,e){
					var ed = eventDom(e),
						calendar_id = e.calendar,
						s = new Date(e.start),
						e = new Date(e.end),
						e_m = ((e.getMonth() > s.getMonth() || s.getMonth() == e.getMonth()) && s.getFullYear() == e.getFullYear() ? e.getMonth() : e.getMonth() + 12)
						s_m = s.getMonth(),
						s_y = s.getFullYear();
					if(e.getFullYear() > s.getFullYear())
						e_m = e_m + ((e.getFullYear() - s.getFullYear() -1) * 12);
					for(var i = s_m; i < e_m + 1; i++){
						var temp_ed = copyObject(ed);
						var list = agenda_space.find("div[data-month="+s_m+"][data-year="+s_y+"] table.event_list tbody");
						list.append(temp_ed);
						s_m++;
						if(s_m > 11){
							s_m = 0;
							s_y++;
						}
					}
					if(s.getDate() == e.getDate() && s.getMonth() == s.getMonth() && e.getFullYear() == e.getFullYear()){
						var td = agenda_space.find("td[data-date-node="+s.getDate()+"-"+s.getMonth()+"-"+s.getFullYear()+"]");
						td.addClass("has_event").attr("data-calendar-id", calendar_id);
					}else{
						var timeDiff = Math.abs(e.getTime() - s.getTime()),
							diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24)),
							c_m = s.getMonth(),
							c_d = s.getDate(),
							c_y = s.getFullYear(),
							end_of_c_month = new Date(s.getFullYear(),s.getMonth()+1,0).getDate();

						for(var i = 0; i <= diffDays; i++){
							var td = agenda_space.find("td[data-date-node="+c_d+"-"+c_m+"-"+c_y+"]");
							td.addClass("has_event").attr("data-calendar-id", calendar_id);
							c_d++;
							if(c_d > end_of_c_month){
								c_d = 1;
								c_m++;
								if(c_m > 11){
									c_m = 0;
									c_y++;
								}
							}
						} 
					}
				})
				agenda_space.find("table.event_list tbody").each(function(){
					if($(this).find("tr").length > 1)
						$(this).find("td.no_events").parent().remove();
				})
				// nano scroller here
				
			}
		})
		var eventDom = function(event){
			var e_t = $(event_template),
				s = new Date(event.start),
				e = new Date(event.end),
				datetimeFormat = "";
			if(s.getDate() == e.getDate() && s.getMonth() == s.getMonth() && e.getFullYear() == e.getFullYear()){
				datetimeFormat = getDateString(s, calendar_variable.short_day);
				if(!event.allDay){
					datetimeFormat += (' ' + getDateString(s,calendar_variable.time_format) + ' - ' + getDateString(e,calendar_variable.time_format));
				}
			}else{
				if(event.allDay){
					datetimeFormat = getDateString(s,calendar_variable.short_date) + ' - ' + getDateString(e,calendar_variable.short_date);
				}else{
					datetimeFormat = getDateString(s,calendar_variable.short_date_time) + ' - ' + getDateString(e,calendar_variable.short_date_time);
				}
			}
			e_t.find("td.event_datetime").text(datetimeFormat);
			e_t.find("div.event").html(event.title).css("color",event.color);
			return e_t;
		}

	}

	var loading = function(bool) {
		if (bool) _calendar.loading.css("left",($(window).width()/2 - 60) + "px").show();
		else _calendar.loading.hide();
	}

	var renderHead = function(){
		var head = $(head_template);
		var start_month_select = head.find("select[name=start_month]");
		for(var i = 0; i < 12; i++){
			var option = $("<option value='"+i+"'>"+monthNames[i]+"</option>");
			if(i == start_month)
				option.attr("selected","selected");
			start_month_select.append(option);
		}
		var end_month_select = head.find("select[name=end_month]");
		for(var i = 0; i < 12; i++){
			var option = $("<option value='"+i+"'>"+monthNames[i]+"</option>");
			if(i == end_month)
				option.attr("selected","selected");
			end_month_select.append(option);
		}

		var start_year_select = head.find("select[name=start_year]");
		var y = start_year - 5;
		for(var i = 0; i < 10; i++){
			var option = $("<option value='"+y+"'>"+y+"</option>");
			if(y == start_year)
				option.attr("selected","selected");
			start_year_select.append(option);
			y++;
		}
		var end_year_select = head.find("select[name=end_year]");
		y = start_year - 5;
		for(var i = 0; i < 10; i++){
			var option = $("<option value='"+y+"'>"+y+"</option>");
			if(y == end_year)
				option.attr("selected","selected");
			end_year_select.append(option);
			y++;
		}
		return head;
	}

	var Month = function(month,year){
		_this = this;
		this.monthDom = $("<div class='row' data-year='"+year+"' data-month='"+month+"'></div>");
		var template = $(month_template);
		var list_template = $(event_list_template);
		var firstDay = new Date(year,month,1);
		var lastDay = new Date(year,month+1,0);
		var last_inserted_date = 1;
		
		var renderMonth = function(){
			var num_of_rows = getNumberOfRows(year,month);
			var tbody = template.find("table.table tbody");
			for(var i = 0; i < num_of_rows; i++){
				var tr = null;
				if(i == 0)
					tr = makeRow("first");
				else if(i == (num_of_rows - 1)){
					tr = makeRow("last");
				}else{
					tr = makeRow("middle");
				}
				if(tr == null){
					break;
				}
				tbody.append(tr);
			}
			template.find("h4").text(getDateString(firstDay, calendar_variable.month_year_format));
			_this.monthDom.append(template);
			_this.monthDom.append(list_template);
		}

		function getNumberOfRows(year, month) {
			 var day = 1,
				sat_counter = 0,
				sunday_counter = 0, 
				date = new Date(year, month, day);

			 while(date.getMonth() === month) {
				  if(date.getDay() === 0) {
						sunday_counter++;
				  }else if(date.getDay() === 6) {
						sat_counter++;
				  }
				  day++;
				  date = new Date(year, month, day);
			 }
			 return (sunday_counter == 5 && sat_counter == 5 ? 6 : 5);
		}

		var makeRow = function(position){
			if(last_inserted_date <= lastDay.getDate()){
				var row = $("<tr></tr>");
				switch (position){
					case "first":
						var offset = firstDay.getDay() - (window.calendar_variable.sunday_first ? 0 : 1);
						for(var i = 0;i < 7;i++){
							var td = $("<td></td>");
							if(i >= offset){
								td.text(last_inserted_date);
								td.attr("data-date-node",last_inserted_date+"-"+firstDay.getMonth()+"-"+firstDay.getFullYear());
								last_inserted_date++;
							}
							row.append(td);
						}
					break;
					case "middle":
						for(var i = 0;i < 7;i++){
							var td = $("<td></td>");
							td.text(last_inserted_date);
							td.attr("data-date-node",last_inserted_date+"-"+firstDay.getMonth()+"-"+firstDay.getFullYear());
							last_inserted_date++;
							row.append(td);
						}
					break;
					case "last":
						var offset = lastDay.getDay() - (window.calendar_variable.sunday_first ? 0 : 1);
						for(var i = 0;i < 7;i++){
							var td = $("<td></td>");
							if(i <= offset){
								td.text(last_inserted_date);
								td.attr("data-date-node",last_inserted_date+"-"+firstDay.getMonth()+"-"+firstDay.getFullYear());
								last_inserted_date++;
							}
							row.append(td);
						}
					break;
				}
			}else{
				var row = null;
			}
			return row;
		}

		renderMonth();
	}

}