function getDatebd(arg){
const rojAdd = ' রোজ ';
const esheAdd = { e:' ই',she:' শে'}
const kalAdd = ' কাল';
const abodo = ' বঙ্গাব্দ' ;
const monthName = [
'বৈশাখ',//0
'জ্যৈষ্ঠ ',//1
'আষাঢ় ',//2
'শ্রাবণ ',//3
'ভাদ্র',//4
'আশ্বিন ',//5
'কার্তিক ',//6
'অগ্রহায়ণ ',//7
'পৌষ ',//8
'মাঘ',//9
'ফাল্গুন ',//10
'চৈত্র '//11
];
const dayName = [
  'বৃহস্পতিবার',
'শুক্রবার',
'শনিবার',
'রবিবার',
'সোমবার',
'মঙ্গলবার',
'বুধবার',

];
const session = [
'গ্রীষ্ম',
'বর্ষা',
'শরৎ',
'হেমন্ত',
'শীত',
'বসন্ত',
];
const numBd =['০','১','২','৩','৪','৫','৬','৭','৮','৯'];
const convertNumber = (n)=>n.toString().split("").map(num=> numBd[num]).join('');
const addEe = n=>{ let x,y;
  x = n>=10&&n<20 ?  esheAdd.e:''; y= n>=20&&n<=31 ? esheAdd.she:'';return x || y?y+x:''
}



const getYear = (dmy)=>dmy.month<=4 && dmy.date<=13? dmy.year-594 : dmy.year-593;
const getMonthDate = (d,m)=>{
   switch (true) {
      case m==1 && d<=13 :m=8;d= d+17;
     break; 
     case m==1 && d>13 :m=9;d= d-13;
     break;
      case m==2 && d<=12 :m=9;d= d+18;
     break;
      case m==2 && d>12:m=10;d= d-12;
     break;
      case m==3 && d<=14 :m=10;d= d+16;
     break;
      case m==3 && d>14 :m=11;d= d-14;
     break;
      case m==4 && d<=13 :m=11;d= d+17;
     break;
      case m==4 && d>13 :m=0;d= d-13;
     break;
      case m==5 && d<=14 :m=0;d= d+17;
     break;
      case m==5 && d>14 :m=1;d= d-14;
     break;
      case m==6 && d<=14 :m=1;d= d+17;
     break;
      case m==6 && d>14 :m=2;d= d-14;
     break;
      case m==7 && d<=15 :m=2;d= d+16;
     break;
      case m==7 && d>15 :m=3;d= d-15;
     break;
      case m==8 && d<=15 :m=3;d= d+16;
     break;
      case m==8 && d>15 :m=4;d= d-15;
     break;
      case m==9 && d<=15 :m=4;d= d+16;
     break;
      case m==9 && d>15 :m=5;d= d-15;
     break;
      case m==10 && d<=15 :m=5;d= d+15;
     break;
      case m==10 && d>15 :m=6;d= d-15;
     break;
      case m==11 && d<=14 :m=6;d= d+16;
     break;
      case m==11 && d>14 :m=7;d= d-14;
     break;
      case m==12 && d<=14 :m=7;d= d+16;
     break;
      case m==12 && d>14 :m=8;d= d-14;
      default:
        m  = false,
        d=false;
    }

return {month:m,date:d};

}

var GetdayName =  dayName[new Date(arg.year,arg.month,arg.date).getDay()];
let daymon = getMonthDate(arg.date,arg.month);
let getSession = session[Math.floor(daymon.month/2)];

return {
day:rojAdd+GetdayName,
date:convertNumber(daymon.date) +addEe(daymon.date),
month:monthName[daymon.month],
session:getSession+kalAdd,
year:convertNumber(getYear(arg)) +abodo,
}

}


const setDateEng = (tarik)=>{
let dayName = ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'];
let monthName = ["January","February", "March","April","May","June","July","August","September","October","November", "December"]
const arg = {
date:tarik.getDate(),
month:tarik.getMonth()+1,
year:tarik.getFullYear(),
} 
console.log(arg)
const dateEn = {
day:dayName[tarik.getDay()],
date:arg.date,
month:monthName[arg.month-1],
year:arg.year
}

const dateBd =  getDatebd(arg);
return { dateEn,dateBd}
}


function setDatetimeHtml(dateVal){
let { dateEn,dateBd}= setDateEng(new Date(dateVal))
console.log({ dateEn,dateBd})
const app = document.getElementById('app');
const dtext = app.querySelectorAll('[d-text]');
for (let i = 0; i < dtext.length; i++) {
  let att =  dtext[i].getAttribute('d-text');
  if (att) {
  dtext[i].textContent=eval(att);
  }
}



}


setDatetimeHtml(new Date());
flatpickr("#indate");
document.getElementById('indate').onchange=function(){
setDatetimeHtml(this.value);

}