window.auto_close_popup = false;
$.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.is_chinese = ( I18n && I18n.locale.indexOf('zh') != -1 );
window.datetime_format = is_chinese ? 'y M d h:m b' : 'd M, y h:m b';
window.date_format = is_chinese ? 'y M d' : 'd M, y';
window.datetime_format = window.date_format;
window.time_format = "h:m b";
window.std_date_format = 'y-MM-d';
window.short_day = (is_chinese ? "d (w)" : "w d");
window.short_date = (is_chinese ? "M d (w)" : "w d, M");
window.short_date_time = (is_chinese ? "M d (w) h:m b" : "w d, M h:m b");
window.getDateString = function(date, format,is_chinese) {
	 var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
	 var week_days = ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'];
	 if(is_chinese){
		months = [];
		for(var i=0;i<12;i++){
			months.push((i+1)+"月");
		}
		week_days = ["週日","週一","週二","週三","週四","週五","週六"]
	 }
	 var getPaddedComp = function(comp) {
		  return ((parseInt(comp) < 10) ? ('0' + comp) : comp)
	 },
	 formattedDate = format,
	 o = {
		  "y+": date.getFullYear() + (is_chinese ? "年" : ""), // year
		  "MM+": getPaddedComp(date.getMonth() + 1), //raw month
		  "M+": months[date.getMonth()], //month
		  "d+": (is_chinese ? (date.getDate() + "日")  : getPaddedComp(date.getDate())), //day
		  "w+": week_days[date.getDay()], //weekday
		  "h+": getPaddedComp((date.getHours() > 12) ? date.getHours() % 12 : date.getHours()), //hour
		  "H+": getPaddedComp(date.getHours()), //hour
		  "m+": getPaddedComp(date.getMinutes()), //minute
		  "s+": getPaddedComp(date.getSeconds()), //second
		  "S+": getPaddedComp(date.getMilliseconds()), //millisecond,
		  "b+": (date.getHours() >= 12) ? 'PM' : 'AM'
	 };

	 for (var k in o) {
		  if (new RegExp("(" + k + ")").test(format)) {
				formattedDate = formattedDate.replace(RegExp.$1, o[k]);
		  }
	 }
	 return formattedDate;
};
var Calendar = function(dom){

	var c = this;
	this.create_event_btn = $("#create_event_btn");
	this.event_create_space = $("#event_create_space");
	this.mousePosition = {};
	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.navigation = $("#navigation");
	this.rangeSelection = $("#range_selection");
	var agendaView = new AgendaView(c);
	var loadeventsonviewchange = false;
	this.success_event = null;
	this.initialize = function(){
		var date = new Date();
		var d = date.getDate();
		var m = date.getMonth();
		var y = date.getFullYear();
		var change_event = function(_event, delta) {
			_event.end = (_event.end ? _event.end : _event.start);
			var s = $.fullCalendar.parseDate(c.calendar_dom.find(".fc-view table tbody td:first").data("date"));
			var e = $.fullCalendar.parseDate(c.calendar_dom.find(".fc-view table tbody td:first").data("date"));
			$.ajax({
				url: "/admin/calendars/"+_event.id,
				// data: {event:{id:_event.id,start:_event.start,end: _event.end,_s:Math.round(+s / 1000), _e:Math.round(+e / 1000)}},
				data: {event:{id:_event.id,start:_event.start,end: _event.end}},
				type: 'put' ,
				datatype: 'JSON',
				error: function(jqXHR, textStatus, errorThrown) {},
				 success: function(data) {
					console.log('event was success updated');
				 }
			});
		}
		var success_event = function(data,allDay,type,addbtn){
			c.dialog.dismiss();
			
			$('.bootstrap-datetimepicker-widget').remove();
			c.event_create_space.html(data);
			var create_space_height = c.event_create_space.height(),
				create_space_width = c.event_create_space.width();

			if((create_space_height + c.mousePosition["y"]) >= $(window).height()){
				var top_pos = c.mousePosition["y"] - create_space_height
				if (top_pos < 0){
					c.event_create_space.find('.modal-body').css('height',create_space_height+top_pos)
					c.event_create_space.css("top",0 + "px");
				}else{
					c.event_create_space.css("top",top_pos + "px");
				}
			}else if(c.mousePosition["y"]+c.event_create_space.height()<$(window).height()){
				c.event_create_space.css("top",c.mousePosition["y"] + "px");
			}

			if((create_space_width + c.mousePosition["x"]) >= $(window).width()){
				if (c.mousePosition["x"] - create_space_width < 0){
					c.event_create_space.css("left",'0px')
				}else{
					c.event_create_space.css("left",(c.mousePosition["x"] - create_space_width) + "px");
				}
			}else{
				c.event_create_space.css("left",c.mousePosition["x"] + "px");
			}

			if(addbtn){
				c.event_create_space.css({"right":"8px","bottom":"50px","left":"auto","top":"auto"});
			}else{
				c.event_create_space.css({"right":"","bottom":""});
			}

			c.event_create_space.show();
			var pickers = $('.default_picker input');
			var checked = ($("#all_day_check").is(":checked") ? true : false);
			var checked_function = function(c){
				var d = new Date()
				if(c){
					for(i=0;i<pickers.length;i++){
						pickers.eq(i).ui_datetimepicker("destroy");
						pickers.eq(i).attr('placeholder','yyyy/MM/dd')
						var value = pickers.eq(i).val()
						if (value != ''){
							pickers.eq(i).val(value.split(" ")[0])
						}
						pickers.eq(i).ui_datepicker({dateFormat: 'yy/mm/dd',show_view: ''})
					}
				}else{
					for(i=0;i<pickers.length;i++){
						pickers.eq(i).ui_datepicker("destroy");
						pickers.eq(i).attr('placeholder','yyyy/MM/dd HH:mm')
						var value = pickers.eq(i).val()
						if (value != ''){
							pickers.eq(i).val(value + " " + d.getHours() + ":" + d.getMinutes())
						}
						pickers.eq(i).ui_datetimepicker({
					dateFormat: 'yy/mm/dd',
					controlType: 'select',
					timeInput: true,
					oneLine: true,
					timeFormat: 'HH:mm'
					})
					}
				}
			} 
			var repeat_function = function(){
				if(c.event_create_space.find("#event_period").val() == c.event_create_space.find("#event_period option:eq(0)").val()){
					c.event_create_space.find("#event_frequency").attr("disabled","disabled");
				}else{
					c.event_create_space.find("#event_frequency").removeAttr("disabled");
				}
			}
			$("a.btn-close").one("click",function(){
				c.event_create_space.html("").hide();
				$('.bootstrap-datetimepicker-widget').remove();
				return false;
			});

			$("#all_day_check").change(function(){
				if($(this).is(":checked")){
					checked = true;
				}else{
					checked = false;
				}
				checked_function(checked);
			});
			$("#recurring_checkbox").click(function(){
				if($(this).is(":checked"))
					$("#recurring_panel").show();
				else
					$("#recurring_panel").hide();

			})
			$('form[data-remote]').bind("ajax:success",function(evt, data, status){
				c.event_create_space.html("").hide();
				if(type == "new")
					c.renderEvent(data);
				if(type == "edit")
					c.calendar_dom.fullCalendar("refetchEvents");
			});
			c.event_create_space.find("#event_period").change(function(){
				//repeat_function();
			})
			//repeat_function();
		}
		c.success_event = success_event;
		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: $(window).height() - 315,
			events:  function(args, success_callback, fail_callback) {
				var start = args.start;
				var end = args.end;
				$.ajax({
					url: window.location.href,
					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);
					}
				});
			},
			// 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: true, 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);
				c.event_create_space.html("").hide();
				c.dialog.dismiss();
				c.dialog.inflate(calEvent);
				c.dialog.show({"x": originalEvent.clientX,"y": originalEvent.clientY});
			},
			select : function(selectionInfo){
				var jsEvent = selectionInfo.jsEvent,
					 view = selectionInfo.view;
				var start = selectionInfo.start,
					end = selectionInfo.end,
					allDay = selectionInfo.allDay,
					startString = start.getFullYear() + "/"+ (start.getMonth() + 1 > 9 ? start.getMonth() + 1 : "0" + (start.getMonth() + 1)) + "/" + (start.getDate() > 9 ? start.getDate() : "0" + start.getDate()),
					endString = end.getFullYear() + "/" + (end.getMonth() + 1 > 9 ? end.getMonth() + 1 : "0" + (end.getMonth() + 1)) + "/" + (end.getDate() > 9 ? end.getDate() : "0" + end.getDate());

					if(!allDay){
						startString += " " + (start.getHours() > 9 ? start.getHours() : "0" + start.getHours()) + ":" + (start.getMinutes() > 9 ? start.getMinutes() : "0" + start.getMinutes()); 
						endString += " " + (end.getHours() > 9 ? end.getHours() : "0" + end.getHours()) + ":" + (end.getMinutes() > 9 ? end.getMinutes() : "0" + end.getMinutes()); 
					}else{
						startString += " " + start.getHours() + ":" + start.getMinutes(); 
						endString += " " + end.getMinutes() + ":" + end.getMinutes(); 
					}
				
				$.ajax({
					type : "get",
					url : c.create_event_btn.attr("href"),
					data : {"startDate":startString,"endDate":endString,"allDay":allDay},
					success : function(data){
						success_event(data,allDay,"new");
					}
				})
			},
			views: {
				 dayGridMonth: {
					dayMaxEvents: false
				 }
			}
		});
		c.create_event_btn.click(function(){
			$.ajax({
				type : "get",
				url : $(this).attr("href"),
				success : function(data){
					success_event(data,false,"new",true);
				}
			})
			return false;
		});
		c.nextBtn.click(function(){
			c.dialog.dismiss();
			c.calendar_dom.calendar.next();
		});
		c.prevBtn.click(function(){
			c.dialog.dismiss();
			c.calendar_dom.calendar.prev();
		});
		c.todayBtn.click(function(){
			c.dialog.dismiss();
			c.calendar_dom.calendar.today();
		});
		c.modeBtns.click(function(){
			c.dialog.dismiss();
			toggleViews($(this).data("mode"));
		});
		c.refreshBtn.click(function(){
			c.dialog.dismiss();
			if(c.currentView == "agenda")
				agendaView.refresh();
			else
				c.calendar_dom.calendar.refetchEvents();
		});
		c.calendar_dom.mouseup(function(e){
			c.mousePosition = {"x" : e.pageX, "y" : e.pageY};
		})
		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;
			}
			if(c.calendar_dom.calendar.currentData){
				var viewTitle = c.calendar_dom.calendar.currentData.viewTitle;
				if(view == "timeGridDay" && $('.fc-col-header-cell-cushion ').text() != "")
					viewTitle = $('.fc-col-header-cell-cushion ').text() + ', ' + viewTitle;
				$('#current_title').html(viewTitle);
			}
			c.calendar_dom.calendar.render(); //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;
		_event._end = (_event.event.end ? _event.event.end : _event.event.start);
		// var start_date = getDateString(_event._start,date_format);
		// var end_date = getDateString(_event._end,date_format);
		if(_event._end - _event._start > 86400 * 1000){
			_event.allDay = true;
		}
		_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,datetime_format, is_chinese);
			if(_event._end)
				end_time = getDateString(_event._end,datetime_format, is_chinese);
			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,date_format, is_chinese);
			end_time = getDateString(_event._end,date_format, is_chinese);
			var stime = getDateString(_event._start,time_format, is_chinese),
			etime = getDateString(_event._end,time_format, is_chinese),
			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.title + '</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>';
		if(_event.can_edit){
			template +=	'<div class="modal-footer">' +
										'<a href="'+ _event.delete_url +'" class="delete btn btn-primary">Delete</a>' +
										'<a href="'+ _event.edit_url +'" class="edit btn btn-primary" >Edit</a>' +
									'</div>';
		}
	}


	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.offset(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.offset(new_offset);
			event_quick_view.width(new_width);
			event_quick_view.height(new_height);
		}
	}
	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 = ['January','February','March','April','May','June','July','August','September','October','November','December'];
	var month_template =  '<div class="col-md-4">' +
													'<h4></h4>' +
													'<div class="tiny_calendar">' +
														'<table class="table table-condensed table-bordered">' +
															'<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="col-md-8 agenda-event">' +
																'<table class="table table-condensed table-bordered event_list">' +
																	'<thead>' +
																		'<tr>' +
																			'<th>Date</th>' +
																			'<th>Time</th>' +
																			'<th>Events</th>' +
																			'<th>Borrower</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>' +
												'<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>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 />' +
													'<td class="event_time" />' +
													'<td>' +
														'<div class="event" />' +
													'</td>' +
													'<td class="Borrower">'+
												'</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 = "/admin/calendars/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(),"page_id" : _calendar.page_id,"start":usd,"end":ued},
			success : function(data){
				$("#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),
						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");
					}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");
							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),
				dateFormat = "",
				hiring_person_name = event.hiring_person_name;
			if(s.getDate() == e.getDate() && s.getMonth() == s.getMonth() && e.getFullYear() == e.getFullYear())
				dateFormat = getDateString(s, short_day,is_chinese);
			else
				dateFormat = getDateString(s,short_date,is_chinese) + ' - ' + getDateString(e,short_date,is_chinese);
			e_t.find("td:first").text(dateFormat);
			e_t.find("td.event_time").text((event.diff_day ? (getDateString(s, short_date_time,is_chinese)+"~"+getDateString(e, short_date_time, is_chinese)) : (getDateString(s, time_format)+"~"+getDateString(e, time_format))));
			e_t.find("div.event").html(event.title).css("color",event.color);
			e_t.find("td.Borrower").text(hiring_person_name);
			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)
			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;
				}
				template.find("table.table tbody").append(tr);
				template.find("h4").text(monthNames[firstDay.getMonth()] + " - " + firstDay.getFullYear());
			}
			_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":
						for(var i = 0;i < 7;i++){
							var td = $("<td></td>");
							if(i >= firstDay.getDay()){
								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":
						for(var i = 0;i < 7;i++){
							var td = $("<td></td>");
							if(i <= lastDay.getDay()){
								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();
	}

}