// 给定年月获取当月天数   

function GetMDay(y, m) {
	var mday = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); 
	if ((y % 4 == 0 && y % 100 != 0) || y % 400 == 0)//判断是否是闰月 
	//if ((y % 40 == 0 && y % 100 != 0) || y % 400 == 0)//判断是否是闰月	
		mday[1] = 29;
	return mday[m - 1];
}

// 获取星期数
function WeekNumber(y, m, d) {
	var wk;
	if (m <= 12 && m >= 1) {
		for (var i = 1; i < m; ++i) {
			d += GetMDay(y, i);
		}
	}
	/*根据日期计算星期的公式*/
	


//当前月第一天星期几:
wk=new Date(y+'-'+m+'-'+01).getDay();

	//0对应星期天，1对应星期一 
	return parseInt(wk); 
} 


function getCalendar(year, month,options) {
		var ext = {
        twomon       : false
    };
    if(options){
    	$.extend(ext, options);
    }
    
    var daynumber = GetMDay(year, month); //当月天数
    var firstnumber = WeekNumber(year, month, 1); //当月第一天星期
    var lastnumber = WeekNumber(year, month, daynumber); //当月最后一天星期
//    var weeknumber = (daynumber - (7 - firstnumber) - (lastnumber + 1)) / 7; //除去第一个星期和最后一个星期的周数
    var myDate = new Date();
	var mynow = myDate.getDate();
    var myyear = myDate.getFullYear();
	var myth = myDate.getMonth()+1;
	var nowday = {y:myyear,m:myth,d:mynow};
    var nextday = {y:myyear,m:myth,d:mynow+1};
		var jrArr=[{d:'2021-5-1',v:'劳动节'},{d:'2021-6-1',v:'儿童节'},{d:'2021-6-14',v:'端午'},{d:'2021-9-21',v:'中秋'}];
		var calendar=[];
		var flag=false,tmpdate=0,twomon=false;
		if(year==nowday.y&&month==nowday.m){
			twomon=(daynumber-(lastnumber + 1)-14)<nowday.d;
		}
		if(twomon&&ext.twomon){
			tmpdate=daynumber-(lastnumber + 1)-14;
			var daynumber1=GetMDay(year,month+1);
			var firstnumber1=WeekNumber(year, month+1, 1);
			var year1=year,month1=month+1,tmpdate1=0;
			if(month==12){
				year1=year1+1;month1=1;
				daynumber1=GetMDay(year1,month1);
				firstnumber1=WeekNumber(year1,month1,1);
			}
			
		}
    
		for(var i=0;i<6;i++){//每个月最多出现6个星期
			calendar[i]=[];
			for(var j=0;j<=6;j++){
				calendar[i][j]=[];
				if(!(twomon&&ext.twomon)){
					if(!flag&&j==firstnumber&&i==0)flag=true;
					if(tmpdate==daynumber)flag=false;
					if(flag){
						calendar[i][j]['date']=year+'-'+month+'-'+(++tmpdate);
            if((tmpdate>=nowday.d&&year>=nowday.y&&month>=nowday.m)||year>nowday.y||(year>=nowday.y&&month>nowday.m))calendar[i][j]['act']=true;
					}else{
						calendar[i][j]['date']='';
					}
					if(calendar[i][j]['date']!=''){
						calendar[i][j]['y']=year;calendar[i][j]['m']=month;
						calendar[i][j]['d']=tmpdate;
					}
				}else{
					if(i<3){
						if(tmpdate<daynumber){
            	if(tmpdate>=nowday.d)calendar[i][j]['act']=true;
							calendar[i][j]['date']=year+'-'+month+'-'+(++tmpdate);
              calendar[i][j]['y']=year;calendar[i][j]['m']=month;
							calendar[i][j]['d']=tmpdate;
						}else{
							calendar[i][j]['date']='';
						}
					}else{
						if(!flag&&j==firstnumber1&&i==3)flag=true;
						if(flag){
            	calendar[i][j]['act']=true;
							calendar[i][j]['date']=year1+'-'+month1+'-'+(++tmpdate1);
              calendar[i][j]['y']=year1;calendar[i][j]['m']=month1;
							calendar[i][j]['d']=tmpdate1;
						}else{
							calendar[i][j]['date']='';
						}
					}
				}
				calendar[i][j]['text']=calendar[i][j]['d'];
        if(j==0||j==6)calendar[i][j]['zm']=true;
			}
		}
		calendar[0][0]['nowMonText']=year+'年'+month+'月';
    if(month==1){
    	calendar[0][0]['preMonA']='12月';
      calendar[0][0]['preMonAY']=year-1;calendar[0][0]['preMonAM']=12;
    }else{
    	calendar[0][0]['preMonA']=(month-1)+'月';
      calendar[0][0]['preMonAY']=year;calendar[0][0]['preMonAM']=month-1;
    }
    
    if(month==12){
    	calendar[0][0]['nextMonA']='1月';
      calendar[0][0]['nextMonAY']=year+1;calendar[0][0]['nextMonAM']=1;
    }else{
    	calendar[0][0]['nextMonA']=(month+1)+'月';
      calendar[0][0]['nextMonAY']=year;calendar[0][0]['nextMonAM']=month+1;
    }
    
		for(var i=0;i<calendar.length;i++){
			for(var j=0;j<calendar[i].length;j++){
				for(var k=0;k<jrArr.length;k++){
        	if(calendar[i][j]['date']==(nowday.y+'-'+nowday.m+'-'+nowday.d)){
          	calendar[i][j]['text']='今天';calendar[i][j]['jr']=true;
          }
          if(calendar[i][j]['date']==(nextday.y+'-'+nextday.m+'-'+nextday.d)){
          	calendar[i][j]['text']='明天';calendar[i][j]['jr']=true;
          }
					if(calendar[i][j]['date']==jrArr[k].d&&calendar[i][j]['date']!=''){
						calendar[i][j]['text']=jrArr[k].v;
            calendar[i][j]['jr']=true;
					}
				}
			}
		}
		if(twomon&&ext.twomon){
			calendar[0][0]['twomon']=true;
			calendar[0][0]['y']=year;calendar[0][0]['m']=month;
			calendar[3][0]['y']=year1;calendar[3][0]['m']=month1;
		}
	
	return calendar;
}
 /*	
function p_c(y,m){
  var c=getCalendar(y,m);
  var s='';
  for(var i=0;i<c.length;i++){
    for(var j=0;j<c[i].length;j++){
      s+=c[i][j]['date']+" ";
    }
    s+="\n";
  }
  console.log(s);
}*/

function getCalBox(){
		
}