var CalendarModuleMonth = function(date,dom,subpart,url){
    _this = this;
    var events = {}
    var template = dom.find(".month_template"),
        month_names = ["Jan","Feb","March","April","May","June","July","Aug","Sep","Oct","Nov","Dec"],
        monthNames = ['January','February','March','April','May','June','July','August','September','October','November','December'],
        initialDate = date,
        subpartid = subpart,
        index_url = url,
        fetchInterval = null,
        month = date.getMonth(),
        year = date.getFullYear(),
        first_target_day = new Date(year,month,1),
        last_target_day = new Date(year,month+1,0),
        firstDay = new Date(year,month,1),
        lastDay = new Date(year,month+1,0),
        today = date.getDate(),
        last_inserted_date = 1,
        monthDom = $("<div data-year='"+year+"' data-month='"+month+"'></div>"),
        eventHTML = dom.find('div.calendar-events')[0],
        prevMonthFunc,
        nextMonthFunc,
        toggle_data;
    monthDom.html(template);
    var format_time = function(date){
      var hours   = date.getHours(),
          minutes = date.getMinutes();
      if (hours   < 10) {hours   = "0"+hours}
      if (minutes < 10) {minutes = "0"+minutes}
      return hours+':'+minutes;
    }
    function rgb2hex(rgb) {
      rgb = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
      function hex(x) {
        return ("0" + parseInt(x).toString(16)).slice(-2);
      }
      if (rgb){
        return "#" + hex(rgb[1]) + hex(rgb[2]) + hex(rgb[3]);
      }else{
        return "#000000";
      }
    }
    function lighten_color(my_hex,percent){
      if (my_hex[0] == '#'){
        my_hex = my_hex.slice(1)
      }
      var comp = ''
      var rgb = []
      var batch_size = Math.ceil(my_hex.length/3)
      for (var i=0;i<3;i++){
        rgb.push(my_hex.slice(batch_size*i,batch_size*(i+1)))
      }
      $.each(rgb,function(){
        var a = this
        var tmp
        tmp = Math.ceil(parseInt(a,16)*(1+percent/100))
        if (tmp>255) tmp = 255 
        if (tmp < 0) tmp = 0 
        tmp = tmp.toString(16)
        for (var i=0;i<2-tmp.length;i++){
          tmp = '0' + tmp
        }
        comp = comp + tmp
      })
      return '#'+comp
    }
    var format_date = function(date){
      var y = date.getFullYear(),
          m = date.getMonth() + 1,
          d = date.getDate();
      if (m < 10) {m = "0"+m}
      if (d < 10) {d = "0"+d}
      return y+'/'+m+'/'+d;
    }
    var formate_datetime = function(date){
      date = new Date(date)
      return [format_date(date),format_time(date)]
    }
    $(window).resize(function(){
      var window_w = $(window).width()
      $('.widget-calendar-1 div.calendar-events').each(function(){
        var this_w = $(this).parents('.widget-calendar-1').width()
        if (this_w>=728 && window_w>=768){
          if (!$(this).hasClass('width-50')){
            $(this).removeClass('width-100')
            $(this).addClass('width-50')
            $(this).css('width','50%')
            $(this).parents('div[data-module="calendar"]').find('div').eq(0).css('width','50%')
          }
        }else{
          if (!$(this).hasClass('width-100')){
            $(this).addClass('width-100')
            $(this).removeClass('width-50')
            $(this).css('width','100%')
            $(this).parents('div[data-module="calendar"]').find('div').eq(0).css('width','100%')
          }
        }

      })
    })
    var show_event = function(date,ele){
      var date_split = date.split('-')
      var event_div = $(ele).parents('div[data-module="calendar"]').find('div.calendar-events')
      event_div.find('.event-header').text(parseInt(date_split[2])+'/'+(parseInt(date_split[1])+1)+'/'+parseInt(date_split[0]))
      event_div.find('.event-container').remove()
      $(ele).parents('.w-calendar').find('td.shown').removeClass('shown')
      $(ele).addClass('shown')
      $.each(events[date],function(k,v){
        var tp
        if (v.url_linked==''){
          var time_string = ''
          if(v.allDay) {
            var end_time
            var start_time = formate_datetime(v.start)[0]
            if(v.end)
              end_time = formate_datetime(v.end)[0]
            else
              end_time = start_time
            time_string = (start_time==end_time ? "<p class='start-date'><i class='icons-calendar' /> " + start_time + "</p>" : "<i class='icons-calendar' /> " + start_time + " <i class='icons-arrow-right-5' /> " + end_time + "")
          }else{
            var st = formate_datetime(v.start),
                et = formate_datetime(v.end),
                start_time = st[0],
                end_time = et[0],
                same = (start_time==end_time),
                etime = et[1],
                stime = st[1]
            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>");
          }
          var modal_tp = ('<div class="dialog_event" style="display: none;">' +
                 '<div class="modal-header">' +
                  '<h3>' + v.title + '</h3>' +
                  '</div>' +
                  '<div class="modal-body">' +
                  '<div class="event_summary">' + time_string + '</div>' +
                   v.note +
                 '</div>' +
               '</div>')
          tp = $('<div class="event-container" onclick="var tmp=$(this).find(\'.dialog_event\').clone().dialog({dialogClass: \'calendar-dialog\'});$(\'.ui-dialog button\').blur();return false;"><div class="event-icon"><div class="event-bullet-event"></div></div><div class="event-info"></div><div class="model-content"></div>'+modal_tp+'</div>')
        }else{
          tp = $('<a class="event-container"><div class="event-icon"><div class="event-bullet-event"></div></div><div class="event-info"></div></a>').attr('href',v.url_linked)
        }
        var sd = formate_datetime(v.start),
            ed = formate_datetime(v.end),
            duration = '';
        if(v.allDay){
          if (sd[0]!=ed[0]){
            duration = sd[0]+'>'+ed[0] +'<br>'
          }
        }else if (sd[0]==ed[0]){
          duration = sd[1]+'>'+ed[1] +'<br>'
        }else{
          duration = sd[0]+' '+sd[1]+'>'+ed[0]+' '+ed[1] +'<br>'
        }
        tp.find('.event-info').html(duration+v.title+"<div class=\"event-content\">"+v.note+"</div>")
        tp.find('.event-bullet-event').css('background',v.color)
        event_div.find('.event-containers').append(tp)
      })
      
      $(ele).parents('div[data-module="calendar"]').css('display','flex')
      if ($(ele).parents('div[data-module="calendar"]').width()>=728 && $(window).width()>=768){
        event_div.css('width','50%')
        $(ele).parents('div[data-module="calendar"]').find('div').eq(0).css('width','50%')
      }else{
        event_div.css('width','100%')
        $(ele).parents('div[data-module="calendar"]').find('div').eq(0).css('width','100%')
      }
      event_div.show()
      $('.close_box').off('click')
      $('.close_box').on('click',function(){
        hide_event(this)
      })
    }
    var hide_event = function(ele){
      $(ele).parents('.w-calendar').find('td.shown').removeClass('shown')
      var event_div = $(ele).parents('div[data-module="calendar"]').find('div.calendar-events')
      $(ele).parents('div[data-module="calendar"]').css('display','block')
      $(ele).parents('div[data-module="calendar"]').find('div').eq(0).css('width','')
      event_div.hide()
      //$(ele).parents('div[data-module="calendar"]').find('td.w-calendar-toggle').removeClass('w-calendar-toggle')
      event_div.find('.event-container').remove()
    }
    var renderMonth = function(){
        var num_of_rows = getNumberOfRows(),
            head_title = monthDom.find("h4 span.text"),
            table_body =  monthDom.find("table.table tbody");
        table_body.html("");

        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;
            }
            table_body.append(tr);
            head_title.text(monthNames[firstDay.getMonth()] + " " + firstDay.getFullYear());
        }      
    }

    var getNumberOfRows = function() {
        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 first_line_first_day = new Date(year,month,firstDay.getDate()-firstDay.getDay())
                  var first_line_first_date = first_line_first_day.getDate()
                  var first_line_first_month = first_line_first_day.getMonth()
                  var first_line_first_year = first_line_first_day.getFullYear()
                  first_target_day = new Date(first_line_first_year,first_line_first_month,first_line_first_date)
                  for(var i = 0;i < 7;i++){
                    var td = $("<td><div></div></td>");
                    if(i >= firstDay.getDay()){
                      if(today != 0 && last_inserted_date == today){
                        td.addClass("w-calendar-today");
                      }
                      td.find('div').text(last_inserted_date);
                      td.attr("data-date-node",last_inserted_date+"-"+firstDay.getMonth()+"-"+firstDay.getFullYear());
                      last_inserted_date++;
                    }else{
                      td.find('div').text(first_line_first_date+i)
                      td.attr("data-date-node",(first_line_first_date+i)+"-"+first_line_first_month+"-"+first_line_first_year);
                      td.addClass("w-calendar-other-month")
                    }
                    row.append(td);
                  }
                break;
                case "middle":
                    for(var i = 0;i < 7;i++){
                        var td = $("<td><div></div></td>");
                        if(today != 0 && last_inserted_date == today){
                          td.attr("class","w-calendar-today");
                        }
                        td.find('div').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 next_month = month+1,
                        next_year = year;
                    if (next_month==12){
                      next_month = 0;
                      next_year = next_year + 1; 
                    }
                    last_target_day = new Date(next_year,next_month,6-lastDay.getDay())
                    for(var i = 0;i < 7;i++){
                        var td = $("<td><div></div></td>");
                        if(i <= lastDay.getDay()){
                          if(today != 0 && last_inserted_date == today){
                            td.attr("class","w-calendar-today");
                          }
                          td.find('div').text(last_inserted_date);
                          td.attr("data-date-node",last_inserted_date+"-"+firstDay.getMonth()+"-"+firstDay.getFullYear());
                          last_inserted_date++;
                        }else{
                          td.find('div').text(i-lastDay.getDay())
                          td.attr("data-date-node",(i-lastDay.getDay())+"-"+next_month+"-"+next_year);
                          td.addClass("w-calendar-other-month")
                        }
                        row.append(td);
                    }
                break;
            }
        }else{
            var row = null;
        }
        return row;
    }
    function toggle_event(ele,type){
      $(ele).parents('.month_template').find('td').removeClass('w-calendar-toggle')
      if ($(ele).length==1){
        $(ele).addClass('w-calendar-toggle')
        toggle_data = $(ele).data('date-node')
      }
      var toggle_month = $(ele).data('date-node').split('-')[1]
      if (toggle_month==month || $(ele).length!=1){
        if (type=='show'){
          show_event($(ele).data('date-node'),ele)
        }else{
          hide_event(ele)
        }  
      }
      else if(toggle_month==month+1 || toggle_month==0){
        nextMonthFunc(toggle_data)
      }else{
        prevMonthFunc(toggle_data)
      }
    }
    var fetchEvents = function(){
      var usd = Math.round(firstDay/1000),
          usd_target = Math.round(first_target_day/1000),
          ued_target = Math.round(last_target_day/1000);
      $.ajax({
        url : "/xhr/calendars/agenda",
        data : {"month_start" : usd,"unix_start" : usd_target, "unix_end" : ued_target, "subpart_id" : subpartid, "locale" : $('html').attr('lang')},
        dataType : "json",
        type : "get"
      }).done(function(data){
        events = {}
        $(dom).find('.w-calendar-title span').eq(-1).html(data['calendar_title'])
        $.each(data.events,function(index,eve){
          var sd = new Date(eve.start),
              ed = new Date(eve.end),
              sd_date = new Date(formate_datetime(eve.start)[0]),
              ed_date = new Date(formate_datetime(eve.end)[0]),
              timeDiff = ed_date.getTime() - sd_date.getTime(),
              dayDiff = Math.round(timeDiff / (1000 * 3600 * 24));
          if(eve.allDay && dayDiff < 1){
            dayDiff = 1
          }
          if(dayDiff > 0){
            var inserting_date = sd.getDate();
            for(var i = 0;i <= dayDiff; i++){
              var dt = inserting_date + "-" + month + "-" + year,
                  td = dom.find("td[data-date-node=" + dt + "]");
              if (events[dt]==undefined){
                events[dt]=[]
              }
              events[dt].push(eve)
              td.addClass("w-calendar-event");
              if(events[dt] && events[dt].length==1){
                td.click(function(){
                  toggle_event(this,'show')
                })
              }
              inserting_date++;
              if(inserting_date > lastDay.getDate() || (ed.getMonth() == month && inserting_date > ed.getDate())){
                break;
              }
            }
          }else{
            var dt = sd.getDate() + "-" + sd.getMonth() + "-" + sd.getFullYear();
                td = dom.find("td[data-date-node=" + dt + "]");
            if (events[dt]==undefined){
              events[dt]=[]
            }
            events[dt].push(eve)
            if(events[dt] && events[dt].length==1){
              td.click(function(){
                toggle_event(this,'show')
              })
            }
            td.addClass("w-calendar-event");
          }
        })
        if (!toggle_data){
          if (dom.find('td.w-calendar-today').length != 0){
            toggle_event(dom.find('td.w-calendar-today'),'show')
          }else{
            toggle_event(dom.find('td'),'hide')
          }
        }
        dom.find('td:not(td.w-calendar-event)').click(function(){
          toggle_event(this,'hide')
        })
        var clicked_color = dom.find('.w-calendar-event').css('background-color')
        if (clicked_color){
          clicked_color = lighten_color(rgb2hex(clicked_color),-45)
          if (clicked_color!='#000000'){
            dom.find('table').append($('<style>.widget-calendar-1 table.w-calendar-table .w-calendar-toggle{ background-color:'+clicked_color+';color: white;}</style>'))
          }
        }
        monthDom.find("i.loading").addClass("hide");
      })
    }

    this.currentMonth = function(){
      renderMonth();
      var div_tag = $('<div></div>')
      var widge_title = dom.find('.w-calendar-title').eq(0)
      div_tag.html(monthDom)
      div_tag.prepend(widge_title)
      dom.html(div_tag);
      monthDom.find("i.loading").removeClass("hide");
      fetchInterval = setTimeout(fetchEvents,0);
      dom.find('div').eq(0).after(eventHTML)
    }

    this.nextMonth = function(toggle_flag){
      clearTimeout(fetchInterval);
      monthDom.find("i.loading").removeClass("hide");
      month++;
      if(month == 12){
        year++;
        month = 0;
      }
      firstDay = new Date(year,month,1);
      lastDay = new Date(year,month+1,0);
      today = (initialDate.getMonth() == month && initialDate.getFullYear() == year ? initialDate.getDate() : 0);
      last_inserted_date = 1;
      var toggle_type,ele;
      if (toggle_data && toggle_flag){
        ele = dom.find('td[data-date-node="'+toggle_data+'"]')
        toggle_type = (ele.hasClass('w-calendar-event') ? 'show' : 'hide')
      }else{
        toggle_data = undefined
      }
      renderMonth();
      dom.find("table.w-calendar-table tbody").html(monthDom.find("tbody").html());
      if (ele){
        ele = dom.find('td[data-date-node="'+toggle_data+'"]')
        toggle_event(ele,toggle_type)
      }
      fetchInterval = setTimeout(fetchEvents,300);
    }
    nextMonthFunc = this.nextMonth;
    this.prevMonth = function(toggle_flag){
      clearTimeout(fetchInterval);
      monthDom.find("i.loading").removeClass("hide");
      month--;
      if(month == -1){
        year--;
        month = 11;
      }
      firstDay = new Date(year,month,1);
      lastDay = new Date(year,month+1,0);
      today = (initialDate.getMonth() == month && initialDate.getFullYear() == year ? initialDate.getDate() : 0);
      last_inserted_date = 1;
      var toggle_type,ele;
      if (toggle_data && toggle_flag){
        ele = dom.find('td[data-date-node="'+toggle_data+'"]')
        toggle_type = (ele.hasClass('w-calendar-event') ? 'show' : 'hide')
      }else{
        toggle_data = undefined
      }
      renderMonth();
      dom.find("table.w-calendar-table tbody").html(monthDom.find("tbody").html());
      if (ele){
        ele = dom.find('td[data-date-node="'+toggle_data+'"]')
        toggle_event(ele,toggle_type)
      }
      fetchInterval = setTimeout(fetchEvents,300);
    }
    prevMonthFunc = this.prevMonth;
}