// GMRT OBSERVING SETUP AND COMMAND FILE CREATOR (V1.5)//
// snk @ gmrt 2022 //

// antenna list
var ant=["C00","C01","C02","C03","C04","C05","C06","C08","C09","C10","C11","C12","C13","C14","E02","E03","E04","E05","E06","S01","S02","S03","S04","S06","W01","W02","W03","W04","W05","W06"];
var tmpant=["C00","C01","C02","C03","C04","C05","C06","C08","C09","C10","C11","C12","C13","C14","E02","E03","E04","E05","E06","S01","S02","S03","S04","S06","W01","W02","W03","W04","W05","W06"];
var pcode=["A","A","B","C","D"];
var max_sub=4;
var max_beam=4;
var beam_host=["gwbh","gwbh07(1)","gwbh08(2)","gwbh09(3)","gwbh10(4)"];
var beam_host_id=[0,1,2,3,4];
var gwb_version="release";
var tot_time_warn=0;
var newlist;
var ncmd;
var total_weight;
var ddc_lo=[0,0,0,0,0];
var cal_val=["off","low","med","hig","ehi"];
var atn_val=["off","14dB","30dB","44dB"];


// add or remove rows for command/task file, enable disable row columns
$(document).ready(function($)
  	{
	"use strict";

    	// copy row below 
    	$(document).on('click',".btn_row_below_clone", function(e)
    	{
     	var row_num =  $(this).parent().parent().index() ;
     	var r = $(this).closest('tr').clone();
      	$(this).closest('tr').after(r);

            	var table = document.getElementById("table2");
            	var rowCount = table.rows.length-1;
	    	for(var i=1; i<=rowCount; i++) {
	    	table.rows[i].cells[0].innerHTML=i;
	    	}

		$(this).closest('tr').next().find("td:eq(1)").find("select").val("--"); 
		$(this).closest('tr').next().find("td:eq(2)").find("input").val("--"); 
		$(this).closest('tr').next().find("td:eq(3)").find("input").val("--"); 
		$(this).closest('tr').next().find("td:eq(4)").find("input").val("0");

    	});

    	// delete this row 
    	$(document).on('click',".btn_row_delete", function(e)
    	{
     
        var row_num = $(this).parent().parent().index();
        if(row_num<2) { return(0); }
        if(confirm("Do you want to delete this command")) { 
        var r = $(this).closest('tr').remove();
        }

            	var table = document.getElementById("table2");
            	var rowCount = table.rows.length-1;
	    	for(var i=1; i<=rowCount; i++) {
	    	table.rows[i].cells[0].innerHTML=i;
	    	}
    	});

    	// when clicked on command(task)
    	$(document).on('change',".btn_set", function(e)
    	{
     	var cmd =  $(this).val();

		// phase, flux, pol, target
		$(this).closest('tr').find("td:eq(2)").find("input").val("--");
		$(this).closest('tr').find("td:eq(3)").find("input").removeAttr("readonly");
		$(this).closest('tr').find("td:eq(4)").find("input").removeAttr("readonly");
		$(this).closest('tr').css("background-color","");

		// cmd setup
		if(cmd.match("setup")){ 
		$(this).closest('tr').find("td:eq(3)").find("input").val("--");
		$(this).closest('tr').find("td:eq(4)").find("input").val("15");
		$(this).closest('tr').css("background-color","lightblue");
		return(0);
		}
		
		// cmd loop_start, loop_stop
	    	if(cmd.match(/loop/g)) {
		if(cmd.match("loop_start")) { 
		$(this).closest('tr').find("td:eq(2)").find("input").val("2");
		$(this).closest('tr').find("td:eq(3)").find("input").val("{"); 
		$(this).closest('tr').find("td:eq(4)").find("input").val("0");
		$(this).closest('tr').find("td:eq(3)").find("input").attr("readonly","readonly");
		$(this).closest('tr').find("td:eq(4)").find("input").attr("readonly","readonly");
		$(this).closest('tr').css("background-color","lightblue");
		} 
		else { 
		$(this).closest('tr').find("td:eq(2)").find("input").val("--");
		$(this).closest('tr').find("td:eq(3)").find("input").val("}"); 
		$(this).closest('tr').find("td:eq(4)").find("input").val("0");
		$(this).closest('tr').find("td:eq(3)").find("input").attr("readonly","readonly");
		$(this).closest('tr').find("td:eq(4)").find("input").attr("readonly","readonly");
		$(this).closest('tr').css("background-color","lightblue");
		} 
		return(0);
		}

		// cmd power_eq
		if(cmd.match("power_eq")){ 
		$(this).closest('tr').find("td:eq(2)").find("input").val("100");
		$(this).closest('tr').find("td:eq(4)").find("input").val("5");
		return(0);
		}

		// cmd noise_cal 
		if(cmd.match("noise_cal")){ 
		$(this).closest('tr').find("td:eq(2)").find("input").val("off");
		$(this).closest('tr').find("td:eq(4)").find("input").val("1");
		return(0);
		}

		// cmd solar_atn
		if(cmd.match("solar_atn")){ 
		$(this).closest('tr').find("td:eq(2)").find("input").val("off");
		$(this).closest('tr').find("td:eq(4)").find("input").val("1");
		return(0);
		}

		// cmd phasing 
		if(cmd.match("phasing")){ 
		$(this).closest('tr').find("td:eq(2)").find("input").val("--");
		$(this).closest('tr').find("td:eq(4)").find("input").val("5");
		return(0);
		}

		// cmd position 
		if(cmd.match("position")){ 
		$(this).closest('tr').find("td:eq(2)").find("input").val("--");
		$(this).closest('tr').find("td:eq(4)").find("input").val("2");
		return(0);
		}

		// cmd sleep 
		if(cmd.match("sleep")){ 
		$(this).closest('tr').find("td:eq(2)").find("input").val("--");
		$(this).closest('tr').find("td:eq(4)").find("input").val("2");
		return(0);
		}


    	});


        // setup date input
        $('#dtpicker1').datetimepicker({
        dayOfWeekStart : 1,
        format:'dMY H:00',
        lang:'en',
        startDate:currentDate
        });
        var currentDate = new Date();
        $('#dtpicker1').datetimepicker({value:currentDate,step:60});


	onload_init();

});

// onload default 
function onload_init(){
	"use strict";

	// setup date input
        //$('#dtpicker1').datetimepicker({
        //dayOfWeekStart : 1,
        //format:'dMY H:00',
        //lang:'en',
        //startDate:currentDate
        //});
        //var currentDate = new Date();
        //$('#dtpicker1').datetimepicker({value:currentDate,step:60});

	// setup all subarrays and all beams (html) 
	var i,j;
	for(i=1;i<=4;i++) {  // sub loop
	document.getElementById('s'+i).innerHTML=add_sub(i,0); 
		for(j=1;j<=4;j++) {  // beam loop
		$('#t'+i).find("tr:last").after(add_beam(i,j));
		}
	}



	// remove all antenna selection from subarrays and beams, set band "OFF" for all subarrays and set beam "OFF" for all beams
	for(i=1;i<=4;i++) { 
	remove_sub_and_beam(i);
	}

	// hide all subarrays and beams (html)
	for(i=1;i<=4;i++) { // sub loop
		document.getElementById('s'+i).style.display="none";
		document.getElementById('s'+i+'_bm').disabled=true;
		document.getElementById('s'+i+'_bm').value=0;
		document.getElementById('s'+i+'_bm0').style.display="none";
		for(j=1;j<=4;j++) {  // beam loop
		document.getElementById('s'+i+'_bm'+j).style.display="none";
		}
	}

	// set check buttons (default)
	document.getElementById('type1').checked=1; // continuum
	document.getElementById('type2').checked=0; // line
	document.getElementById('type3').checked=0; // beam

	// set main parameters (default)
	document.getElementById('sub').value=1; // subarray 
	document.getElementById('bw').value=200; //  bandwidth 
	document.getElementById('ch').value=2048; //  channels 
	document.getElementById('st').value=2; //  stokes 
	document.getElementById('rfi').value=0; //  rfi 
	document.getElementById('pfb').value=0; //  pfb 
	document.getElementById('gates').value=1; //  gpu_gates 
	document.getElementById('sta_int').value=4; //  sta cycles 

	// show first subarray
	show_sub(1);

	// set default frequency band for subarray 1
	document.getElementById('s1_bnd').value="OFF";
        setdefaultfreq(1);

	// enable all antenna selection for subarray 1 and its beam 1
	document.getElementById('s1_ant').value=tmpant; 
	document.getElementById('s1_bm1_ant').value=tmpant; 
	cnt_ant(1,0);
	cnt_ant(1,1);
	

	// default beam setup
	document.getElementById('s1_bm1_mod').value="IA";
	document.getElementById('s1_bm1_bit1').value=16;
	document.getElementById('s1_bm1_bit2').value=16;
	document.getElementById('s1_bm1_int').value=81;
	document.getElementById('s1_bm1_st').value=1;
	document.getElementById('s1_bm1_st').disabled=true;
	check_beam(1,1,1);

	
	setup_cl_commandfile();
	//setup_beam_commandfile();

	uploadfile("src");
	uploadfile("obs");
}

// setup C/L sample command file 
function setup_cl_commandfile(){ 
	"use strict";

	// setup command file for C/L 
	
        var table = document.getElementById("table2");
        var rowCount = table.rows.length;

	// remove rows
	for(var i=rowCount; i>1; i--) {
	var r=$("#table2").find("tr:eq("+i+")").remove();
	}

	// add 8 rows
	for(var i=1; i<8;i++) { 
	var r=$("#table2").find("tr:eq("+i+")").clone();
	$("#table2").find("tr:eq("+i+")").after(r);
	}

	// update index upto 8
	for(var i=1; i<=8; i++) {
	table.rows[i].cells[0].innerHTML=i;
	}

	// 1 setup
	$("#table2").find("tr:eq(1)").find("td:eq(1)").find("select").val("setup");
	$("#table2").find("tr:eq(1)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(1)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(1)").find("td:eq(3)").find("input").val("--");
	$("#table2").find("tr:eq(1)").find("td:eq(4)").find("input").val("20");
	$("#table2").find("tr:eq(1)").css("background-color","lightblue");

	// 2 flux_cal 
	$("#table2").find("tr:eq(2)").find("td:eq(1)").find("select").val("flux_cal");
	$("#table2").find("tr:eq(2)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(2)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(2)").find("td:eq(3)").find("input").val("3Cxx");
	$("#table2").find("tr:eq(2)").find("td:eq(4)").find("input").val("10");

	// 3 phase_cal 
	$("#table2").find("tr:eq(3)").find("td:eq(1)").find("select").val("phase_cal");
	$("#table2").find("tr:eq(3)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(3)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(3)").find("td:eq(3)").find("input").val("0837-xx");
	$("#table2").find("tr:eq(3)").find("td:eq(4)").find("input").val("5");

	// 4 loop_start 
	$("#table2").find("tr:eq(4)").find("td:eq(1)").find("select").val("loop_start");
	$("#table2").find("tr:eq(4)").find("td:eq(2)").find("input").val("3");
	$("#table2").find("tr:eq(4)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(4)").find("td:eq(3)").find("input").val("{");
	$("#table2").find("tr:eq(4)").find("td:eq(3)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(4)").find("td:eq(4)").find("input").val("0");
	$("#table2").find("tr:eq(4)").find("td:eq(4)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(4)").css("background-color","lightblue");

	// 5 target 
	$("#table2").find("tr:eq(5)").find("td:eq(1)").find("select").val("target");
	$("#table2").find("tr:eq(5)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(5)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(5)").find("td:eq(3)").find("input").val("NGCxx");
	$("#table2").find("tr:eq(5)").find("td:eq(4)").find("input").val("30");

	// 6 phase_cal 
	$("#table2").find("tr:eq(6)").find("td:eq(1)").find("select").val("phase_cal");
	$("#table2").find("tr:eq(6)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(6)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(6)").find("td:eq(3)").find("input").val("0837-xx");
	$("#table2").find("tr:eq(6)").find("td:eq(4)").find("input").val("5");

	// 7 loop_stop
	$("#table2").find("tr:eq(7)").find("td:eq(1)").find("select").val("loop_stop");
	$("#table2").find("tr:eq(7)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(7)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(7)").find("td:eq(3)").find("input").val("}");
	$("#table2").find("tr:eq(7)").find("td:eq(3)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(7)").find("td:eq(4)").find("input").val("0");
	$("#table2").find("tr:eq(7)").find("td:eq(4)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(7)").css("background-color","lightblue");

	// 8 flux_cal 
	$("#table2").find("tr:eq(8)").find("td:eq(1)").find("select").val("flux_cal");
	$("#table2").find("tr:eq(8)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(8)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(8)").find("td:eq(3)").find("input").val("3Cxx");
	$("#table2").find("tr:eq(8)").find("td:eq(4)").find("input").val("10");
	
	gettimeval();
}

// setup beam sample command file 
function setup_beam_commandfile(){ 
	"use strict";

	// setup command file for beam 
	
        var table = document.getElementById("table2");
        var rowCount = table.rows.length;

	// remove rows
	for(var i=rowCount; i>1; i--) {
	var r=$("#table2").find("tr:eq("+i+")").remove();
	}

	// add 10 rows
	for(var i=1; i<10;i++) { 
	var r=$("#table2").find("tr:eq("+i+")").clone();
	$("#table2").find("tr:eq("+i+")").after(r);
	}

	// update index upto 10 
	for(var i=1; i<=10; i++) {
	table.rows[i].cells[0].innerHTML=i;
	}
	
	// 1 setup
	$("#table2").find("tr:eq(1)").find("td:eq(1)").find("select").val("setup");
	$("#table2").find("tr:eq(1)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(1)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(1)").find("td:eq(3)").find("input").val("--");
	$("#table2").find("tr:eq(1)").find("td:eq(4)").find("input").val("20");
	$("#table2").find("tr:eq(1)").css("background-color","lightblue");

	// 2 power_eq 
	$("#table2").find("tr:eq(2)").find("td:eq(1)").find("select").val("power_eq");
	$("#table2").find("tr:eq(2)").find("td:eq(2)").find("input").val("120");
	$("#table2").find("tr:eq(2)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(2)").find("td:eq(3)").find("input").val("3Cxx");
	$("#table2").find("tr:eq(2)").find("td:eq(4)").find("input").val("5");

	// 3 phasing 
	$("#table2").find("tr:eq(3)").find("td:eq(1)").find("select").val("phasing");
	$("#table2").find("tr:eq(3)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(3)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(3)").find("td:eq(3)").find("input").val("3Cxx");
	$("#table2").find("tr:eq(3)").find("td:eq(4)").find("input").val("8");

	// 4 target 
	$("#table2").find("tr:eq(4)").find("td:eq(1)").find("select").val("target");
	$("#table2").find("tr:eq(4)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(4)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(4)").find("td:eq(3)").find("input").val("PSRxx");
	$("#table2").find("tr:eq(4)").find("td:eq(4)").find("input").val("30");

	// 5 flux_cal 
	$("#table2").find("tr:eq(5)").find("td:eq(1)").find("select").val("flux_cal");
	$("#table2").find("tr:eq(5)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(5)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(5)").find("td:eq(3)").find("input").val("3Cxx");
	$("#table2").find("tr:eq(5)").find("td:eq(4)").find("input").val("10");

	// 6 loop_start 
	$("#table2").find("tr:eq(6)").find("td:eq(1)").find("select").val("loop_start");
	$("#table2").find("tr:eq(6)").find("td:eq(2)").find("input").val("5");
	$("#table2").find("tr:eq(6)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(6)").find("td:eq(3)").find("input").val("{");
	$("#table2").find("tr:eq(6)").find("td:eq(3)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(6)").find("td:eq(4)").find("input").val("0");
	$("#table2").find("tr:eq(6)").find("td:eq(4)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(6)").css("background-color","lightblue");

	// 7 phasing 
	$("#table2").find("tr:eq(7)").find("td:eq(1)").find("select").val("phasing");
	$("#table2").find("tr:eq(7)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(7)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(7)").find("td:eq(3)").find("input").val("3Cxx");
	$("#table2").find("tr:eq(7)").find("td:eq(4)").find("input").val("8");

	// 8 target 
	$("#table2").find("tr:eq(8)").find("td:eq(1)").find("select").val("target");
	$("#table2").find("tr:eq(8)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(8)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(8)").find("td:eq(3)").find("input").val("PSRxx");
	$("#table2").find("tr:eq(8)").find("td:eq(4)").find("input").val("30");

	// 9 loop_stop
	$("#table2").find("tr:eq(9)").find("td:eq(1)").find("select").val("loop_stop");
	$("#table2").find("tr:eq(9)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(9)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(9)").find("td:eq(3)").find("input").val("}");
	$("#table2").find("tr:eq(9)").find("td:eq(3)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(9)").find("td:eq(4)").find("input").val("0");
	$("#table2").find("tr:eq(9)").find("td:eq(4)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(9)").css("background-color","lightblue");

	// 10 flux_cal 
	$("#table2").find("tr:eq(10)").find("td:eq(1)").find("select").val("flux_cal");
	$("#table2").find("tr:eq(10)").find("td:eq(2)").find("input").val("--");
	$("#table2").find("tr:eq(10)").find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find("tr:eq(10)").find("td:eq(3)").find("input").val("3Cxx");
	$("#table2").find("tr:eq(10)").find("td:eq(4)").find("input").val("10");

	gettimeval();
}

// set default values for each band change
function setdefaultfreq(i){ 
	"use strict";

	// read band
	var band=document.getElementById('s'+i+'_bnd').value;
	var bw=document.getElementById("bw").value;

	// for non selected band
	if(band == "OFF"){ 
	document.getElementById('s'+i+'_f1').value=0;
	document.getElementById('s'+i+'_f2').value=0;
	document.getElementById('s'+i+'_f3').value=0;
	document.getElementById('s'+i+'_f4').value=0;
	document.getElementById('s'+i+'_f5').value=1;
	document.getElementById('s'+i+'_int').value=10.7;
	return(0);
	}

	// set default frequencies for valid bands
	document.getElementById('s'+i+'_f1').value=get_band_val(band,"f1");
	document.getElementById('s'+i+'_f2').value=get_band_val(band,"f2");
	document.getElementById('s'+i+'_f3').value=get_band_val(band,"f3");
	document.getElementById('s'+i+'_f4').value=get_band_val(band,"f4");
	document.getElementById('s'+i+'_f4').readOnly=true;
	document.getElementById('s'+i+'_f4').style.backgroundColor="lightgreen";
	document.getElementById('s'+i+'_f5').value=1;

	// set default int
	document.getElementById('s'+i+'_int').value=10.7;

        var def_bw=get_band_val(band,"bw");	
	var band_name=get_band_val(band,"name");
	if( bw != def_bw) { 
	var f1=get_band_val(band,"f1");
	var f3=f1+(get_band_val(band,"net")*bw);
	var f2=(f1+f3)/2;
	document.getElementById('s'+i+'_f2').value=f2;
	document.getElementById('s'+i+'_f3').value=f3;
	alert("Warning: Default band width for "+band_name+" is " + def_bw + " MHz.!!"); 
	} 
	return(0);
} 

// check beofre download
function check_all(){ 
	"use strict";

	//user name
	if( document.getElementById("user").value == "" ) {
     	alert( "Please provide User name" ); return(0);
   	}

	//email id
	if( document.getElementById("email").value == "" ) {
     	alert( "Please provide Email id" ); return(0);
   	}

	// code
	if( document.getElementById("code").value == "" ) {
     	alert( "Please provide GTAC code" ); return(0);
   	}

	// title 
	if( document.getElementById("title").value == "" ) {
     	alert( "Please provide Project title" ); return(0);
   	}

	// read project information 
	var user=document.getElementById("user").value;  
	var email=document.getElementById("email").value;  
	var code=document.getElementById("code").value;  
	var title=document.getElementById("title").value;  
	var time1=document.getElementById("dtpicker1").value;
	var hh=document.getElementById("hh").value;
	var type1=0;
	var type2=0;
	var type3=0;
	if(document.getElementById('type1').checked) { type1=1; }  
	if(document.getElementById('type2').checked) { type2=1; } 
	if(document.getElementById('type3').checked) { type3=1; } 

	if( type1 == 0 && type2 == 0 && type3 == 0) { 
     	alert( "Please select at least one Observing type" ); return(0);
	}



	// project info
		var input="## GMRT OBSERVING SETUP AND COMMAND FILE (V1.5)  ##\n\n";
		input=input +"## !!! PLEASE DO NOT EDIT THIS FILE MANUALLY. IT MAY CAUSE ERRORS IN OBSERVATION !!! ##\n\n";
		input=input+"{PROJECT_INFO\n";
		input=input+"USER_NAME = "+user+"\n";
		input=input+"EMAIL_ID = "+email+"\n";
		input=input+"GTAC_CODE = "+code+"\n";
		input=input+"PROJECT_TITLE = "+title+"\n";
		input=input+"DATE_TIME = "+time1+" (IST)\n";
		input=input+"SLOT_LENGTH = "+hh+" h\n";
		input=input+"TYPE_CONTINUUM = "+type1+"\n"; 
		input=input+"TYPE_LINE = "+type2+"\n";
		input=input+"TYPE_PULSAR = "+type3+"\n";
		input=input+"}\n\n";

	var tot_subarray=document.getElementById("sub").value;  
	var bw=document.getElementById("bw").value;  
	var ch=document.getElementById("ch").value;  
	var res=document.getElementById("res").value;  
	var st=document.getElementById("st").value;  
	var sta=document.getElementById("sta_int").value;  
	var rfi=document.getElementById("rfi").value;  
	var pfb=document.getElementById("pfb").value;  
	var gates=document.getElementById("gates").value;  

	// receiver and backend setup 
		input=input+"{RECEIVER_AND_BACKEND_SETUP\n";
		input=input+"GWB_VERSION = "+gwb_version+"\n";
		input=input+"TOTAL_SUBARRAY = "+tot_subarray+"\n";
		input=input+"BAND_WIDTH = "+bw+" MHz.\n";
		input=input+"SPECTRAL_CHAN = "+ch+"\n";
		input=input+"CHAN_RESOLUTION = "+res+" kHz.\n";
		input=input+"STOKES = "+st+"\n";
		input=input+"STA_INTEG = "+sta+"\n";
		input=input+"REALTIME_RFI_FILTER = "+rfi+"\n";
		input=input+"POLY_PHASE_FILTER = "+pfb+"\n";
		input=input+"GPU_GATES = "+gates+"\n";

	for(var i=1;i<=tot_subarray;i++) { 
	var ant_list=document.getElementById('s'+i+'_ant').value;

	if(tot_subarray == 1 ) { var prj=document.getElementById('code').value; }
	else { var prj=document.getElementById('code').value; prj=prj.toUpperCase();
	       if(prj.match("DDTC")) { prj=prj.slice(1); } 
	prj=prj+pcode[i]; 
	}

	var tot_ant=document.getElementById('s'+i+'_antno').innerHTML;  
	var band=document.getElementById('s'+i+'_bnd').value;  
	var f1=document.getElementById('s'+i+'_f1').value;  
	var f2=document.getElementById('s'+i+'_f2').value;  
	var f3=document.getElementById('s'+i+'_f3').value;  
	var f4=document.getElementById('s'+i+'_f4').value;  
	var f5=document.getElementById('s'+i+'_f5').value;  
	    if(f5 == 1) { f5="default"; } else { f5 = "custom"; } 
	//var ddclo=Math.abs(f4-f1);
	var band_flip="NO"; var net=1; if(f1 > f3) {  band_flip="YES"; net=-1;  }
	var lta_int=document.getElementById('s'+i+'_int').value;  
	var walsh=document.getElementById('s'+i+'_wl').value;  
	var tot_beam=document.getElementById('s'+i+'_bm').value;  
		input=input+"	{SUBARRAY_SETUP\n";
		input=input+"	SUBARRAY_NO = "+i+"\n";
		input=input+"	PROJECT = "+prj+"\n";
		input=input+"	TOTAL_ANTENNA = "+parseInt(tot_ant)+"\n";
		input=input+"	ANTENNA_LIST = "+ant_list+"\n";
		input=input+"	RF_BAND = "+get_band_val(band,'name')+"\n";
		input=input+"	START_FREQ = "+f1+" MHz. (0th chan)\n";
		input=input+"	CENTER_FREQ = "+f2+" MHz.\n";
		input=input+"	STOP_FREQ = "+f3+" MHz. (last chan)\n";
		input=input+"	GAB_LO = "+f4+" MHz. ("+f5+")\n";
		input=input+"	DDC_LO = "+ddc_lo[i]+" MHz.\n";
		input=input+"	BAND_FLIP = "+band_flip+"\n";
		input=input+"	LTA_INTEG = "+lta_int+ " sec\n";
		input=input+"	WALSH_MODU = "+walsh+ "\n";
		input=input+"	TOTAL_BEAM = "+tot_beam+ "\n";
	for(var j=1;j<=tot_beam;j++) { 
	var beam_ant_list=document.getElementById('s'+i+'_bm'+j+'_ant').value; 
	var beam_tot_ant=document.getElementById('s'+i+'_bm'+j+'_antno').innerHTML;  
	var beam_id=document.getElementById('s'+i+'_bm'+j+'_id').innerHTML;  
	var beam_mod=document.getElementById('s'+i+'_bm'+j+'_mod').value;  
	var beam_bit1=document.getElementById('s'+i+'_bm'+j+'_bit1').value;  
	var beam_bit2=document.getElementById('s'+i+'_bm'+j+'_bit2').value;  
	var beam_int=document.getElementById('s'+i+'_bm'+j+'_int').value;  
	var beam_st=document.getElementById('s'+i+'_bm'+j+'_st').value;  
	var beam_ch=document.getElementById('s'+i+'_bm'+j+'_ch').value;  
	var beam_hst=document.getElementById('s'+i+'_bm'+j+'_hst').value;  
	var beam_dir=document.getElementById('s'+i+'_bm'+j+'_dir').value;  
		input=input+"		{BEAM_SETUP\n";
		input=input+"		BEAM_NO = "+beam_id+"\n";
		input=input+"		BEAM_TOTAL_ANTENNA = "+parseInt(beam_tot_ant)+"\n";
		input=input+"		BEAM_ANTENNA_LIST = "+beam_ant_list+"\n";
		input=input+"		BEAM_MODE = "+beam_mod+"\n";
		input=input+"		BEAM_BIT1 = "+beam_bit1+" (beam data bit)\n";
		input=input+"		BEAM_BIT2 = "+beam_bit2+" (beam recording bit)\n";
		input=input+"		BEAM_INTEG = "+beam_int+" microsec\n";
		input=input+"		BEAM_STOKES = "+beam_st+"\n";
		input=input+"		BEAM_CHAN = "+beam_ch+"\n";
		input=input+"		BEAM_HOST = "+beam_host[beam_hst]+"\n";
		input=input+"		BEAM_DIR = "+beam_dir+"\n";
		input=input+"		}\n";

	}
		input=input+"	}\n";
	}
		input=input+"}\n\n";

	// read and check source list
	var sourcelist=document.getElementById('sourcelist').value;  
	var co=sourcelist;
            co=co.trim();
	    co=co.replace(/["]+/g, ' ');
	    co=co.replace(/[\n]+/g, 'newline');
	    co=encodeURIComponent(co);
	$.ajax({
		type: "POST",
		url: "./cmd.php",
		data: { 'arg': "src", 'para': co },
		async: false,
		success: function(data,status) {newlist=data; }
	});
		input=input+"{SOURCE_LIST\n";
		input=input+"#Source        Ra            Dec           Epoch    Time(min)  DM(pc cm^-3)  Int  Chan\n";
		input=input+newlist;
		input=input+"}\n\n";

	input=input+"{COMMAND_FILE\n";
	input=input+"#command(task)  option     source(target)  time(min)   time_line(tentative)\n";

	//read command file
	var rows = document.getElementById("table2").rows.length;

	// read source list again
	   sourcelist=sourcelist.toUpperCase();
        co=sourcelist.split(/\r\n|\n\r|\n|\r/);
        co=removeElementsStartingWith(co,'#');
	co=keepFirstWord(co);

        // command loop
	for (i=0;i<=(rows-2);i++){
        var cmd=document.getElementsByName("command")[i].value;
		if(cmd == "--" ) { alert("Please select the command # " + Math.abs(i+1) ); } 
        var option=document.getElementsByName("option")[i].value;
        var target=document.getElementsByName("target")[i].value; target = target.replace(/\s+/g, ''); target = target.toUpperCase();
	
	    // check targets in the source list
	    if(!co.includes(target) && (cmd != "loop_start" && cmd != "loop_stop" && cmd != "setup" && cmd != "sleep")) { 
	    alert("Error: The traget "+target+" not found in the source list"); return(0); }  
        var srctime=document.getElementsByName("srctime")[i].value;
        var timeline=document.getElementsByName("timeline")[i].value;
	    input=input+cmd.padEnd(15,' ')+" "+option.padEnd(10,' ')+" "+target.padEnd(15,' ')+" "+srctime.padEnd(10,' ')+"  "+timeline+"\n";
	} // command loop end
		input=input+"}\n\n";

	// check total time
	if(tot_time_warn > 0)  { alert( "Total time exceeds the observing time by " + tot_time_warn + " minutes."  ); return(0); }

	// read special requirments
        var spec_req=document.getElementById("spec_req").value;
	if(spec_req == "") { spec_req = "#NA"; } 
	input=input+"{SPECIAL_REQUIREMENT\n";
	input=input+spec_req+"\n";
	input=input+"}\n\n";

	//cmd=input.replace(/[\n]+/g, 'newline');
	
	//cmd=input.replace(/["]+/g, ' ');
	//cmd=encodeURIComponent(cmd);
	//$.ajax({
	//		type: "POST",
	//		url: "./cmd.php",
	//		data: { 'arg': "cmd", 'para': cmd },
	//		async: false,
	//		success: function(data,status) {ncmd=data;}
	//	});

	var date_time=new Date();
	input=input+"## "+date_time+" ##\n\n";

	//input=input+"{TGC_PYTHON_CODE\n";
	//input=input+ncmd;
	//input=input+"}\n\n";

	// create file name
	var file="gtac_"+code+"_"+time1+".txt";
	file=file.replace(/[' ']+/g,'_');
	file=file.replace(/[':']+/g,'');

	// check freq para
	if(check_freq(2)) { return(0);}

	// check computing weight
	check_weight();
	if(total_weight > 115) { return(0);}

	// download file
	download(file,input);
	return(true);
} 

// download file
function download(filename, text) {
	"use strict";
  	var element = document.createElement('a');
  	element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text));
  	element.setAttribute('download', filename);

  	element.style.display = 'none';
  	document.body.appendChild(element);

  	element.click();

  	document.body.removeChild(element);
}


// calculate center and stop freq when start or bw is changed 
function getfreqval(i){ 
	"use strict";

	var bw=parseFloat(document.getElementById("bw").value);
	var ch=parseInt(document.getElementById("ch").value);
	       document.getElementById("res").value=bw/ch*1000.0;

	var net;
	var sub;
	var band;
	var gablo;
	var j;
	

	if(i==0) { i=1; sub=parseInt(document.getElementById("sub").value); }  // for all subarray (bw click)
	else {  sub =i ; }   // for single subarray (line/gablo click)
	
	for(var j=i;j<=sub;j++) { 
	band=document.getElementById("s"+j+"_bnd").value;
	if(band == "OFF") { ; }
	else { 
		// calculate net sign
		net = -1;
		if(get_band_val(band,"f2") > document.getElementById("s"+j+"_f4").value) { net = 1; }  
		gablo=parseFloat(document.getElementById("s"+j+"_f4").value);

	 	if( bw > 50 ) { 
		document.getElementById("s"+j+"_f1").value=gablo;
		document.getElementById("s"+j+"_f2").value=(gablo + (gablo+bw*net) )/2.0 ;
		document.getElementById("s"+j+"_f3").value=gablo+bw*net; 
		}
	        else { 
		var line;
		var ddclo;
		var f1,f3,ff1,ff3;
		line=parseFloat(document.getElementById("s"+j+"_f2").value);
		f1=line-(bw/2)*net;
		f3=line+(bw/2)*net;
		ff1=gablo;
		ff3=gablo+100*net;
		//ddclo=Math.abs(ff1-f1);
		if(net == -1) { ddclo = ff1-f1; }  
		if(net == 1 ) { ddclo = f1-ff1; }  

		if(ddclo < 0) { 
		alert("Warning: Not possible to tune the line at the center of the GWB band. You may set the custom GAB LO OR Contact to gmrtoperations@ncra.tifr.res.in"); 
		//ddclo=0;
		} 

		if((ddclo+bw) > 100 ) { 
		alert("Warning: Not possible to tune the line at the center of the GWB band. You may set the custom GAB LO OR Contact to gmrtoperations@ncra.tifr.res.in"); 
		//ddclo=100-bw;
		} 

		ddc_lo[j]=ddclo;

		document.getElementById("s"+j+"_f1").value=line-(bw/2)*net; 
		document.getElementById("s"+j+"_f3").value=line+(bw/2)*net; 

		alert("Narrow band width (< 100) mode ON\n"+f1+" - "+f3+" = "+bw+" MHz.(bw)\n"+ff1+" - "+ff3+" = 100 MHz.(acq bw)\n DDC_LO = "+ddclo+" MHz.");
		} 	
	}
	}// for loop
	return(0);
}

// check frequency ranges
function check_freq(arg){ 
	"use strict";

	// check for all subarrays
	var warn=0;
	var sub=parseInt(document.getElementById("sub").value);
	for(var i=1; i<=sub ;i++) { 
	var band=document.getElementById('s'+i+'_bnd').value;
	var bw=parseFloat(document.getElementById("bw").value);

	// check band ranges and gab lo
	if(band != "OFF") { 
	var f1=parseFloat(document.getElementById('s'+i+'_f1').value);
	var f2=parseFloat(document.getElementById('s'+i+'_f2').value);
	var f3=parseFloat(document.getElementById('s'+i+'_f3').value);
	var f4=parseFloat(document.getElementById('s'+i+'_f4').value);
	//var ddclo=Math.abs(f4-f1);

	var b1=get_band_val(band,"start");
	var b2=get_band_val(band,"end");

    	if(f1 < b1 || f1 > b2 ) { alert("Warning: Sub-array "+i+": Start Frequency "+f1+" MHz is out of selected band range!! " + b1 + " - " + b2 + " MHz."); warn=1; } 
	if(f3 < b1 || f3 > b2 ) { alert("Warning: Sub-array "+i+": Stop Frequency  "+f3+ "MHz is out of selected band range!! " + b1 + " - " + b2 + " MHz."); warn=1; } 

	if(f4 <= 0 )   { alert("Error: Sub-array "+i+": GAB LO is not set");return(1);} 
	if(ddc_lo[i] < 0 || ( (bw < 100)  && (ddc_lo[i]+bw > 100))) { alert("Error: Sub-array "+i+": GAB LO / DDC LO is out of range, You may set the custom GAB LO OR Contact to gmrtoperations@ncra.tifr.res.in");return(1);}
	}

	// check if band is off
	if(band == "OFF") { 
    	alert("Error: Sub-array "+i+": Please select the valid RF band"); 
	return(1);
	}

		
	}

	if((arg ==1) && (warn == 0) ) { alert("Frequency configuration is OK"); }

return(0);
}


// get prediected time
function gettimeval(){
	"use strict";
	var i;


	var time1=document.getElementById("dtpicker1").value;
        var    hh=document.getElementById("hh").value;

        var tsec1=datetosec(time1);
	var tsec2=tsec1+hh*3600;

	var start_time=tsec1;
	var end_time=0;

        var rows = document.getElementById("table2").rows.length-1;

        document.getElementById("time_slot").innerHTML="Time Slot (IST): " + time1 +" -- " + sectodate(tsec2)  + " (" + hh + "h)" ;

	// command loop
	var flag=0;
	var loop_time=0;
	for (i=1;i<=rows;i++){ 
	var cmd=document.getElementsByName("command")[i-1].value;
	var target=document.getElementsByName("target")[i-1].value;
	var srctime=document.getElementsByName("srctime")[i-1].value;


	var obs_time=parseInt(srctime)*60;

	if(cmd.match(/loop/g)){ 
		if(cmd.match("loop_start")) { 
		flag=1; 
		loop_time=0;
                var cycles=parseInt(document.getElementsByName("option")[i-1].value);
		} 
		else { 
		flag=0; 
		obs_time=loop_time*cycles;
		} 
	}
	
	if(flag) { loop_time=loop_time+obs_time+oh_time(cmd);}
	else { end_time=start_time+obs_time+oh_time(cmd); } 
	
	if(flag && !target.match("{") ) { 
	document.getElementsByName('timeline')[i-1].value="--:--" + " -- " + "--:--";
	}
	else { 
		if(target.match("{")) { document.getElementsByName('timeline')[i-1].value=sectodate(start_time) + " -- " + sectodate(end_time); } 
	   else if(target.match("}")) { document.getElementsByName('timeline')[i-1].value=sectodate(  end_time) + " -- " + sectodate(end_time); } 
	        else                  { document.getElementsByName('timeline')[i-1].value=sectodate(start_time) + " -- " + sectodate(end_time); } 
	}

	tot_time_warn=0;
	if(end_time > tsec2) { 
	tot_time_warn=(end_time-tsec2)/60; 
	document.getElementsByName('timeline')[i-1].style.color="red";
	}
	else { document.getElementsByName('timeline')[i-1].style.color="black"; } 
		
	start_time=end_time;
	} // command loop end
}

// convert date to seconds
function datetosec(date_time){
	"use strict";
	var t1=date_time.trim().replace(/[:]+/g,' ').split(/ +/);
	var mon = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');
	
	var d=t1[0].substr(0,2);
	var m=t1[0].substr(2,3);
	    m=mon.indexOf(m);
	var y=t1[0].substr(5,4);
	var date=new Date();
	date.setFullYear(y,m,d);
	date.setHours(t1[1]);
	date.setMinutes(t1[2]);
	date.setSeconds(0);
	var sec=parseInt(date.getTime()/1000);
	return(sec);
}

// convert seconds to date
function sectodate(sec){
	"use strict";
	var date=new Date();
	date.setTime(sec*1000);
	
	var h=date.getHours();
	var m=date.getMinutes();
	h=('0' + h).slice(-2);
	m=('0' + m).slice(-2);
	return(h+":"+m);
}

// get overhead time between two scans
function oh_time(cmd){
	"use strict";
	if(cmd === "setup") { return(0); } 
	if(cmd === "phasing") { return(0); } 
	if(cmd === "position") { return(0); } 
	if(cmd === "sleep") { return(0); } 
	if(cmd.match(/loop/g)) { return(0); } 
	return(120);
}



// show the no of selected subarrays (div: s1,s2,s3,s4)
function show_sub(){ 
	"use strict";
        var sub=parseInt(document.getElementById("sub").value);
	var i;

	// disable remaining subarray
	for(i=(sub+1); i<=4 ; i++) { 
		document.getElementById("s"+i).style.display="none"; // subarray table
		remove_sub_and_beam(i); // remove sub and beams and their ants

	}

	// enable selected subarray
	for(i=1; i<=sub ; i++) { 
		document.getElementById("s"+i).style.display='';
	}
}

// subarrary html table (onload)
function add_sub(i,j) { 
	"use strict";

	var s_id  ='"s'+i+'"'; // subar  - s1
	var t_id  ='"t'+i+'"'; // table  - t1
	var a_id  ='"s'+i+'_ant"'; // antennas - s1_ant
        var ano_id='"s'+i+'_antno"';// antennas - s1_antno
	var b_id  ='"s'+i+'_bnd"'; // band  - s1_bnd
	var f1_id ='"s'+i+'_f1"'; // f1   - s1_f1
	var f2_id ='"s'+i+'_f2"'; // f2   - s1_f2
	var f3_id ='"s'+i+'_f3"'; // f3   - s1_f3
	var f4_id ='"s'+i+'_f4"'; // f4   - s1_f4
	var f5_id ='"s'+i+'_f5"'; // f5   - s1_f5
	var int_id='"s'+i+'_int"'; // int  - s1_int
	var wl_id ='"s'+i+'_wl"'; // int  - s1_wl
	var bm_id ='"s'+i+'_bm"'; // bm  -  s1_bm

	var obj='<br><table name='+t_id+' id='+t_id+' style="border-collapse:collapse"  border="1" cellspacing="0" cellpadding="0">\
	\
	<tr style="background-color:lightgreen;">\
	<td align=center>Sub-array ('+i+')<br>Antennas</td>\
	<td align=center>RF band/sub-band<br>(MHz)</td>\
	<td align=center>Start Freq<br>(MHz)</td>\
	<td align=center>Center Freq<br>(MHz)</td>\
	<td align=center>Stop Freq<br>(MHz)</td>\
	<td align=center>GAB LO Freq<br>(MHz)</td>\
	<td align=center>LTA Integ<br>(sec)</td>\
	<td align=center>Walsh<br>(modu)</td>\
	<td align=center>Beam<br>(ON/OFF)</td>\
	</tr>\
	\
	<tr style="background-color:lightgreen;">\
	<td align=center> <input type="text" id='+a_id +' placeholder="select antennas" size=10px onclick="show_antbox();" readonly><span id='+ano_id+'>00</span></td>\
	\
	<td align=center>\
	<select name='+b_id+' id='+b_id+' onchange="setdefaultfreq('+i+');";>\
	<option value="OFF">Select Band</option>\
	<option value="20">Band-2 FULL(120-250)</option>\
	<option value="OFF"></option>\
	<option value="30">BAND-3 FULL(250-500)</option>\
	<option value="31">BAND-3 SB1(240-340)</option>\
	<option value="32">BAND-3 SB2(300-400)</option>\
	<option value="33">BAND-3 SB3(360-460)</option>\
	<option value="34">BAND-3 SB4(420-520)</option>\
	<option value="OFF"></option>\
	<option value="40">BAND-4 FULL(550-900)</option>\
	<option value="41">BAND-4 SB1(550-650)</option>\
	<option value="42">BAND-4 SB2(635-735)</option>\
	<option value="43">BAND-4 SB3(720-820)</option>\
	<option value="44">BAND-4 SB4(800-900)</option>\
	<option value="OFF"></option>\
	<option value="50">BAND-5 FULL(950-1460)</option>\
	<option value="51">BAND-5 SB1(1000-1120)</option>\
	<option value="52">BAND-5 SB2(1110-1230)</option>\
	<option value="53">BAND-5 SB3(1220-1340)</option>\
	<option value="54">BAND-5 SB4(1330-1460)</option>\
	</select> </td>\
	\
	<td align=center> <input type="text" name='+f1_id+' id='+f1_id+' value="1460" size="8px" readonly style="background-color:lightgreen;border:0px"> </td>\
	<td align=center> <input type="text" name='+f2_id+' id='+f2_id+' value="1260" size="8px" readonly style="background-color:lightgreen;border:0px" onchange="getfreqval('+i+');"> </td>\
	<td align=center> <input type="text" name='+f3_id+' id='+f3_id+' value="1060" size="8px" readonly style="background-color:lightgreen;border:0px"> </td>\
	\
	<td align=center>\
	<input type="text" name='+f4_id+' id='+f4_id+' value="1060" size="4px" readonly style="background-color:lightgreen;border:0px;" onchange="getfreqval('+i+');">\
	<select name='+f5_id+' id='+f5_id+' style="background-color:lightgreen;max-width:50%" onchange="gablomode('+i+');getfreqval('+i+');">\
	<option value=1>Default</option>\
	<option value=-1>Custom</option>\
	</select> \
	</td>\
	\
	<td align=center>\
	<select name='+int_id+' id='+int_id+'>\
	<option value="42.9">42.9</option>\
	<option value="21.4" selected>21.4</option>\
	<option value="10.7">10.7</option>\
	<option value="5.3">5.3</option>\
	<option value="2.6">2.6</option>\
	</select> </td>\
	<td align=center>\
	<select id='+wl_id+'>\
	<option value=1>ON</option>\
	<option value=0 selected>OFF</option>\
	</select> </td>\
	\
	<td align=center>\
	<select id='+bm_id+' name='+bm_id+' onchange="show_beam('+i+')">\
	<option value="0">OFF</option>\
	<option value="1">One beam</option>\
	<option value="2">Two beam</option>\
	<option value="3">Three beam</option>\
	<option value="4">Four beam</option>\
	</select> </td>\
	</tr>';
return(obj);
}


// beam html code (onload)
function add_beam(i,j) { 
	"use strict";

	var add_id  = '"s'+i+'_bm'+j+'_id"';// mode s1_bm1_id (beam address)
	var a_id   = '"s'+i+'_bm'+j+'_ant"';// mode s1_bm1_ant (beam antenna list)
	var bno_id = '"s'+i+'_bm'+j+'_antno"';// mode s1_bm1_antno (beam total antennas)
	var mod_id = '"s'+i+'_bm'+j+'_mod"';// mode s1_bm1_mod (beam mode)
	var bit1_id= '"s'+i+'_bm'+j+'_bit1"';// bits s1_bm1_bit1 
	var bit2_id= '"s'+i+'_bm'+j+'_bit2"';// bits s1_bm1_bit2
	var int_id = '"s'+i+'_bm'+j+'_int"';// integ s1_bm1_int
	var st_id  = '"s'+i+'_bm'+j+'_st"'; // stokes s1_bm1_st
	var ch_id  = '"s'+i+'_bm'+j+'_ch"'; // chans s1_bm1_ch
	var hst_id = '"s'+i+'_bm'+j+'_hst"';// machine s1_bm1_hst
	var dir_id = '"s'+i+'_bm'+j+'_dir"';// dir/disk s1_bm1_dir
	var trh_id = '"s'+i+'_bm0"';        // header row s1_bm0
	var tr_id  = '"s'+i+'_bm'+j+'"';    // beam row s1_bm1

	var obj;

	if(j == 1) {
	obj='<tr id='+trh_id+' style="background-color:lightblue;">\
	<td align=center>Beam Antennas</td>\
	<td align=center>Beam (N) Mode</td>\
	<td align=center>Beam Data</td>\
	<td align=center>Beam Record</td>\
	<td align=center>Beam Integ</td>\
	<td align=center>Beam Stokes</td>\
	<td align=center>Beam Chan</td>\
	<td align=center>Beam Host</td>\
	<td align=center>Beam Dir</td>\
	</tr>';
	}
	
	obj=obj+'<tr id='+tr_id+' style="background-color:lightblue;">\
	<td align=center><input type="text" id='+a_id +' placeholder="select antennas" size=10px onclick="show_antbox();" readonly><span id='+bno_id+'>00</span></td>\
\
	<td align=center> Beam (<span id='+add_id+' name='+add_id+'></span>)\
	<select id='+mod_id+' name='+mod_id+' onchange="check_beam('+i+','+j+',1);">\
	<option value="IA">IA</option>\
	<option value="PA">PA</option>\
	<option value="PC">PC</option>\
	<option value="CD">CD</option>\
	<option value="PASV">PASV</option>\
	</select> </td>\
\
	<td align=center>\
	<select id='+bit1_id+' name='+bit1_id+' onchange="check_beam('+i+','+j+',2);">\
	<option value=16>16 bit</option>\
	</select> </td>\
\
	<td align=center>\
	<select id='+bit2_id+' name='+bit2_id+' onchange="check_beam('+i+','+j+',3);">\
	<option value=16>16 bit</option>\
	<option value=8>8 bit</option>\
	</select> </td>\
\
	<td align=center>\
	<select name='+int_id+' id='+int_id+' onchange="check_beam('+i+','+j+',4);">\
	<option value="1300">1300 &mu;s</option>\
	<option value="655">655 &mu;s</option>\
	<option value="327">327 &mu;s</option>\
	<option value="163">163 &mu;s</option>\
	<option value="81">81 &mu;s</option>\
	<option value="40">40 &mu;s</option>\
	<option value="20">20 &mu;s</option>\
	<option value="10">10 &mu;s</option>\
	<option value="5">5 &mu;s</option>\
	<option value="NA">NA</option>\
	</select>\
	</td>\
\
	<td align=center>\
	<select name='+st_id+' id='+st_id+' onchange="check_beam('+i+','+j+',5);">\
	<option value="1">Total_Int(1)</option>\
	<option value="4">Full_Polar(4)</option>\
	</select>\
	</td>\
\
	<td align=center>\
	<select name='+ch_id+' id='+ch_id+' onchange="check_beam('+i+','+j+',6);">\
	<option value=4096>4096</option>\
	<option value=2048 selected>2048</option>\
	<option value=1024>1024</option>\
	<option value=512>512</option>\
	<option value=256>256</option>\
	<option value=128>128</option>\
	<option value=64>64</option>\
	<option value=32>32</option>\
	<option value=NA>NA</option>\
	</select>\
	</td>\
\
	<td align=center>\
	<select name='+hst_id+' id='+hst_id+' onchange="check_beam('+i+','+j+',7);">\
	<option value='+beam_host_id[1]+'>'+beam_host[1]+'</option>\
	<option value='+beam_host_id[2]+'>'+beam_host[2]+'</option>\
	<option value='+beam_host_id[3]+'>'+beam_host[3]+'</option>\
	<option value='+beam_host_id[4]+'>'+beam_host[4]+'</option>\
	</select>\
	</td>\
\
	<td align=center> <input type="text" name='+dir_id+'  id='+dir_id+' value="/data2" size="5px" onchange="check_beam('+i+','+j+',8);" > </td>\
	</tr> ';
	return(obj);
}

// beam selection for subarray
function show_beam(i){ 
	"use strict";

	var j;
	var sub_no;
	sub_no=i;

	// pulsar/beam type click
	// enable beam selection for all subarrays
	if(i == 0 && document.getElementById('type3').checked) { 
		for(j=1;j<=4;j++) { document.getElementById('s'+j+'_bm').disabled=false; 
		}


        setup_beam_commandfile();
	return(0);
	}

	// disable beam selection for all subarrays 
	if(i == 0 && (!document.getElementById('type3').checked)) { 
		for(i=1;i<=4;i++) { 
			document.getElementById('s'+i+'_bm').disabled=true;
			document.getElementById('s'+i+'_bm').value=0;
			document.getElementById('s'+i+'_bm0').style.display="none";
		for(j=1; j<=4 ; j++) { 
			document.getElementById('s'+i+'_bm'+j).style.display="none";
		        document.getElementById('s'+i+'_bm'+j+'_ant').value="";
        		document.getElementById('s'+i+'_bm'+j+'_mod').value="OFF";
		}}

        setup_cl_commandfile();
	return(0);
	}

	// use beams click
	// read totol no of beams for all subarrays
	var tot_beams=get_tot_beams(0);

	// no of beams for selected subarray
	var beams=parseInt(document.getElementById('s'+i+'_bm').value);

	// warning max 4 beams possible 
	if(tot_beams > 4) { alert("Max 4 beams are possible!!!"); 
	document.getElementById('s'+i+'_bm').value=4-(tot_beams-beams);	
        beams=4-(tot_beams-beams);
	} 

	// hide all beams for selected subarray
	document.getElementById('s'+i+'_bm0').style.display="none";
	for(j=(beams+1); j<=4 ; j++) { 
		document.getElementById('s'+i+'_bm'+j).style.display="none";
		document.getElementById('s'+i+'_bm'+j+'_ant').value="";
        	document.getElementById('s'+i+'_bm'+j+'_mod').value="IA";


	}

	// show selected beams for selected subarray
	if(beams > 0){ 
	document.getElementById('s'+i+'_bm0').style.display="";
	for(j=1; j<=beams ; j++) { 
		document.getElementById('s'+i+'_bm'+j).style.display="";
		document.getElementById('s'+i+'_bm'+j+'_ant').value=document.getElementById('s'+i+'_ant').value;
        	document.getElementById('s'+i+'_bm'+j+'_mod').value="IA";
		cnt_ant(i,j);
	} }

	// check beams
	beams=get_tot_beams(i);
	for(j=1; j<=beams ; j++) { // beam loop
		//check_beam(i,j,0);
		check_beam(i,j,10);
		check_beam(i,j,1);
	}

	// show beam_nos and beam_host 
	var beam_no=0;
	var sub=document.getElementById('sub').value;
	for(i=1;i<=sub;i++) { // subarray loop 
	beams=get_tot_beams(i);
	for(j=1; j<=beams ; j++) { // beam loop
		beam_no++;
		if(i==sub_no) { 
		document.getElementById('s'+i+'_bm'+j+'_id').innerHTML=beam_host_id[beam_no];
		document.getElementById('s'+i+'_bm'+j+'_hst').value=beam_host_id[beam_no];
		}
	}}

return(0);
}

function remove_ant(arr,value) {
	"use strict";
        return arr.filter(function(ele){ return !ele.match(value); });
}

// get frequency band details
function get_band_val(band,type) { 
	"use strict";

	var freq_band;
	var b1, b2, bw, net, f1, gablo;

	if(band == "OFF") { freq_band="OFF";                  b1=0;  b2=0; bw=400; net=-1; f1=0;gablo=0;}

	if(band == "20") { freq_band="BAND-2 FULL(120-250)";  b1=100;  b2=300;  bw=200; net=-1; f1=300; gablo=300; }
                                                                                                                   
	if(band == "30") { freq_band="BAND-3 FULL(250-500)";  b1=220;  b2=500;  bw=200; net=-1; f1=500; gablo=500; }
	if(band == "31") { freq_band="BAND-3 SB1(240-340)";   b1=240;  b2=340;  bw=100; net=-1; f1=340; gablo=340; }
	if(band == "32") { freq_band="BAND-3 SB2(300-400)";   b1=300;  b2=400;  bw=100; net=-1; f1=410; gablo=410; }
	if(band == "33") { freq_band="BAND-3 SB3(360-460)";   b1=360;  b2=460;  bw=100; net=-1; f1=460; gablo=460; }
	if(band == "34") { freq_band="BAND-3 SB4(420-520)";   b1=420;  b2=520;  bw=100; net=-1; f1=520; gablo=520; }
                                                                                                                   
	if(band == "40") { freq_band="BAND-4 FULL(550-900)";  b1=550;  b2=950;  bw=200; net= 1; f1=550; gablo=550; }
	if(band == "41") { freq_band="BAND-4 SB1(550-650)";   b1=550;  b2=650;  bw=100; net= 1; f1=550; gablo=550; }
	if(band == "42") { freq_band="BAND-4 SB2(635-735)";   b1=635;  b2=735;  bw=100; net= 1; f1=635; gablo=635; }
	if(band == "43") { freq_band="BAND-4 SB3(720-820)";   b1=720;  b2=820;  bw=100; net=-1; f1=820; gablo=820; }
	if(band == "44") { freq_band="BAND-4 SB4(800-900)";   b1=800;  b2=900;  bw=100; net=-1; f1=900; gablo=900; }
                                                                                                                   
	if(band == "50") { freq_band="BAND-5 FULL(950-1460)"; b1=950;  b2=1460; bw=400; net=-1; f1=1460;gablo=1460;}
	if(band == "51") { freq_band="BAND-5 SB1(1000-1120)"; b1=1000; b2=1120; bw=100; net=-1; f1=1120;gablo=1120;}
	if(band == "52") { freq_band="BAND-5 SB2(1110-1230)"; b1=1110; b2=1230; bw=100; net=-1; f1=1230;gablo=1230;}
	if(band == "53") { freq_band="BAND-5 SB3(1220-1340)"; b1=1220; b2=1340; bw=100; net=-1; f1=1340;gablo=1340;}
	if(band == "54") { freq_band="BAND-5 SB4(1330-1460)"; b1=1330; b2=1450; bw=100; net=-1; f1=1450;gablo=1450;}
                                                                                                                   
	if(band =="BAND-2 FULL(120-250)" ) { freq_band="20"; b1=100;  b2=300;  bw=200; net=-1;  f1=300; gablo=300; }
                                                                                                                   
	if(band =="BAND-3 FULL(250-500)" ) { freq_band="30"; b1=220;  b2=500;  bw=200; net=-1;  f1=500; gablo=500; }
	if(band =="BAND-3 SB1(240-340)"  ) { freq_band="31"; b1=240;  b2=340;  bw=100; net=-1;  f1=340; gablo=340; }
	if(band =="BAND-3 SB2(300-400)"  ) { freq_band="32"; b1=300;  b2=400;  bw=100; net=-1;  f1=410; gablo=410; }
	if(band =="BAND-3 SB3(360-460)"  ) { freq_band="33"; b1=360;  b2=460;  bw=100; net=-1;  f1=460; gablo=460; }
	if(band =="BAND-3 SB4(420-520)"  ) { freq_band="34"; b1=420;  b2=520;  bw=100; net=-1;  f1=520; gablo=520; }
                                                                                                                   
	if(band =="BAND-4 FULL(550-900)" ) { freq_band="40"; b1=550;  b2=950;  bw=200; net= 1;  f1=550; gablo=550; }
	if(band =="BAND-4 SB1(550-650)"  ) { freq_band="41"; b1=550;  b2=650;  bw=100; net= 1;  f1=550; gablo=550; }
	if(band =="BAND-4 SB2(635-735)"  ) { freq_band="42"; b1=635;  b2=735;  bw=100; net= 1;  f1=635; gablo=635; }
	if(band =="BAND-4 SB3(720-820)"  ) { freq_band="43"; b1=720;  b2=820;  bw=100; net=-1;  f1=820; gablo=820; }
	if(band =="BAND-4 SB4(800-900)"  ) { freq_band="44"; b1=800;  b2=900;  bw=100; net=-1;  f1=900; gablo=900; }
                                                                                                                   
	if(band =="BAND-5 FULL(950-1460)") { freq_band="50"; b1=950;  b2=1460; bw=400; net=-1;  f1=1460;gablo=1460;}
	if(band =="BAND-5 SB1(1000-1120)") { freq_band="51"; b1=1000; b2=1120; bw=100; net=-1;  f1=1120;gablo=1120;}
	if(band =="BAND-5 SB2(1110-1230)") { freq_band="52"; b1=1110; b2=1230; bw=100; net=-1;  f1=1230;gablo=1230;}
	if(band =="BAND-5 SB3(1220-1340)") { freq_band="53"; b1=1220; b2=1340; bw=100; net=-1;  f1=1340;gablo=1340;}
	if(band =="BAND-5 SB4(1330-1460)") { freq_band="54"; b1=1330; b2=1450; bw=100; net=-1;  f1=1450;gablo=1450;}
	
	var f3=f1+(bw*net);
	var f2=(f1+f3)/2
	var f4=gablo;

	if(type == "name") { return(freq_band); }
	if(type == "start"){ return(b1); }
	if(type == "end")  { return(b2); }
	if(type == "f1")   { return(f1); }
	if(type == "f2")   { return(f2); }
	if(type == "f3")   { return(f3); }
	if(type == "f4")   { return(f4); }
	if(type == "bw")   { return(bw); }
	if(type == "net")  { return(net);}
	if(type == "gablo"){ return(gablo);}

	return(0);
}

// count total no of beams
function get_tot_beams(k) { 
	"use strict";

	var tot_beams=0;

	// for all subarrays
	if(k == 0) { 
	var sub=document.getElementById('sub').value;
        for( var j=1;j<=sub;j++) {
        tot_beams=tot_beams+parseInt(document.getElementById('s'+j+'_bm').value);
	}
	return(tot_beams);
	}

	// for selected subarray
	if(k > 0) { 
        tot_beams=parseInt(document.getElementById('s'+k+'_bm').value);
	return(tot_beams);
 	}		

return(0);
}

function check_beam(i,j,k) { 
	"use strict";
	// k value: 
	// 1 - mod
	// 2 - bit1
	// 3 - bit2
	// 4 - int
	// 5 - st
	// 6 - ch 
	// 7 - hst
	// 8 - dir 
	// 9 - main chan
	// 10 - main bw
	
	var sub_no=i;
	var bem_no=j;
	
	// enable disable beam stokes from main stokes
	if(k == 0 ) {  
	var main_st=document.getElementById('st').value;
	if(main_st==2) { 
		for(var i=1;i<=4;i++) { // subarray loop 
		var beams=get_tot_beams(i);
		for(var j=1; j<=beams ; j++) { // beam loop
		document.getElementById('s'+i+'_bm'+j+'_st').value=1;
		document.getElementById('s'+i+'_bm'+j+'_st').disabled=true;
		make_sel('s'+i+'_bm'+j+'_mod',["IA","PA","PC","CD","PASV"],"");
		make_sel('s'+i+'_bm'+j+'_bit1',[16,8],"bit");
		make_sel('s'+i+'_bm'+j+'_bit2',[16,8],"bit");
		document.getElementById('s'+i+'_bm'+j+'_mod').value="IA";
		} }
	}
	if(main_st==4) { 
		for(var i=1;i<=4;i++) { // subarray loop 
		var beams=get_tot_beams(i);
		for(var j=1; j<=beams ; j++) { // beam loop
		make_sel('s'+i+'_bm'+j+'_mod',["IA","PA"],"");
		make_sel('s'+i+'_bm'+j+'_bit1',[16,8],"bit");
		make_sel('s'+i+'_bm'+j+'_bit2',[16,8],"bit");
		document.getElementById('s'+i+'_bm'+j+'_mod').value="IA";
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA") { document.getElementById('s'+i+'_bm'+j+'_st').disabled=false; } 
		} }
	}
	}

	if(k == 1) { 
	// bit1/2 for IA/PA/PC
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA" || 
	document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" || 
	document.getElementById('s'+i+'_bm'+j+'_mod').value=="PC") {
	make_sel('s'+i+'_bm'+j+'_bit1',[16,8],"bit");
	make_sel('s'+i+'_bm'+j+'_bit2',[16,8],"bit");
	}

	// bit1/2 for CD 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD") {
		if(document.getElementById('bw').value == 400 ) {
		make_sel('s'+i+'_bm'+j+'_bit1',[4],"bit"); 
		make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit");
		}
		else { 
		make_sel('s'+i+'_bm'+j+'_bit1',[8,4],"bit"); 
		make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit"); 
		}
	}

	// bit1/2 for PASV 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV") {
		if(document.getElementById('bw').value == 400 ) { 
		make_sel('s'+i+'_bm'+j+'_bit1',[4],"bit");
		make_sel('s'+i+'_bm'+j+'_bit2',[4],"bit");
		}
		else { 
		make_sel('s'+i+'_bm'+j+'_bit1',[8,4],"bit");
		make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");
		}
	}

	}

	// when bit1 is selected
	if(k == 2 ) { 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="16") { make_sel('s'+i+'_bm'+j+'_bit2',[16,8],"bit");} 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8" ) { make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");} 

	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="16") { make_sel('s'+i+'_bm'+j+'_bit2',[16,8],"bit");} 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8" ) { make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");} 

	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PC" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="16") { make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit");} 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PC" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8" ) { make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");} 

	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8") { make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit");} 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="4") { make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit");} 

	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8") { make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");} 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="4") { make_sel('s'+i+'_bm'+j+'_bit2',[4],"bit");} 
	}


	// enable/disable when beam mode is selected (when selected IA/PA/PC/CD/PASV)
	if(k == 1 ) { 

	// chan for CDP mode 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD") {
	make_sel('s'+i+'_bm'+j+'_ch',[32,64,128,256,512,1024,2048,4096],"");
	document.getElementById('s'+i+'_bm'+j+'_ch').value="2048";
	document.getElementById('s'+i+'_bm'+j+'_ch').disabled=false;
	}
	else { 
	make_sel('s'+i+'_bm'+j+'_ch',[document.getElementById("ch").value],"");
	document.getElementById('s'+i+'_bm'+j+'_ch').value=document.getElementById("ch").value;
	document.getElementById('s'+i+'_bm'+j+'_ch').disabled=true;
	}

	// stoke enable for PA only, disable for other modes 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" && document.getElementById('st').value==4 ) {
	document.getElementById('s'+i+'_bm'+j+'_st').disabled=false;
	}
	else { 
	document.getElementById('s'+i+'_bm'+j+'_st').disabled=true; 
	document.getElementById('s'+i+'_bm'+j+'_st').value=1; 
	} 


	// disable integration for PASV only 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV") {
	make_sel('s'+i+'_bm'+j+'_int',["NA"],"");
	document.getElementById('s'+i+'_bm'+j+'_int').value="NA";
	document.getElementById('s'+i+'_bm'+j+'_int').disabled=true;
	}
	else { 
	document.getElementById('s'+i+'_bm'+j+'_int').disabled=false;
	make_sel('s'+i+'_bm'+j+'_int',["5","10","20","40","81","163","327","655","1300"],"&mu;s");
	document.getElementById('s'+i+'_bm'+j+'_int').value="81";
	}

	// dir 
	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV") {
	document.getElementById('s'+i+'_bm'+j+'_dir').value="/nvme1";
	}
	else { 
	document.getElementById('s'+i+'_bm'+j+'_dir').value="/data2";
	}

	}

	// make the bit1 same for for all IA/PA/PC mode 
	if(k == 1 || k == 2){ 
	var beam_no=0;
	for(i=1;i<=4;i++) { // subarray loop 
	var beams=get_tot_beams(i);
	for(j=1; j<=beams ; j++) { // beam loop
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA" ||
		document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" ||
		document.getElementById('s'+i+'_bm'+j+'_mod').value=="PC") {  
		beam_no++;
		if( beam_no == 1) {
		document.getElementById('s'+i+'_bm'+j+'_bit1').disabled=false;
		var bit1=document.getElementById('s'+i+'_bm'+j+'_bit1').value;
		}
		else{
		document.getElementById('s'+i+'_bm'+j+'_bit1').disabled=true;
		document.getElementById('s'+i+'_bm'+j+'_bit1').value=bit1;
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="16") { make_sel('s'+i+'_bm'+j+'_bit2',[16,8],"bit");} 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8" ) { make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");} 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="16") { make_sel('s'+i+'_bm'+j+'_bit2',[16,8],"bit");} 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8" ) { make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");} 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PC" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="16") { make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit");} 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PC" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8" ) { make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");} 
		}

		}

		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD" || document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV") {  
		document.getElementById('s'+i+'_bm'+j+'_bit1').disabled=false;
		}
	}}
	}

	// make the bit1 same for for all CD/PASV mode 
	if(k == 1 || k == 2){ 
	var beam_no=0;
	for(i=1;i<=4;i++) { // subarray loop 
	var beams=get_tot_beams(i);
	for(j=1; j<=beams ; j++) { // beam loop
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD" ||
		document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV") {  
		beam_no++;
		if( beam_no == 1) {
		document.getElementById('s'+i+'_bm'+j+'_bit1').disabled=false;
		var bit1=document.getElementById('s'+i+'_bm'+j+'_bit1').value;
		}
		else{
		document.getElementById('s'+i+'_bm'+j+'_bit1').disabled=true;
		document.getElementById('s'+i+'_bm'+j+'_bit1').value=bit1;
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8") { make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit");} 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="4") { make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit");} 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="8") { make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");} 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV" && document.getElementById('s'+i+'_bm'+j+'_bit1').value=="4") { make_sel('s'+i+'_bm'+j+'_bit2',[4],"bit");} 
		}

		}

	}}
	}

	// change bits when main bw is changed 
	if(k == 10){ 
	for(i=1;i<=4;i++) { // subarray loop 
	var beams=get_tot_beams(i);
	for(j=1; j<=beams ; j++) { // beam loop

		// bit1/2 for IA/PA/PC
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA" || 
		document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" || 
		document.getElementById('s'+i+'_bm'+j+'_mod').value=="PC") {
		make_sel('s'+i+'_bm'+j+'_bit1',[16,8],"bit");
		make_sel('s'+i+'_bm'+j+'_bit2',[16,8],"bit");
		}

		// bit1/2 for CD 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD") {
		if(document.getElementById('bw').value == 400 ) {
		make_sel('s'+i+'_bm'+j+'_bit1',[4],"bit"); 
		make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit");
		}
		else { 
		make_sel('s'+i+'_bm'+j+'_bit1',[8,4],"bit"); 
		make_sel('s'+i+'_bm'+j+'_bit2',[16],"bit"); 
		}
		}

		// bit1/2 for PASV 
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV") {
		if(document.getElementById('bw').value == 400 ) { 
		make_sel('s'+i+'_bm'+j+'_bit1',[4],"bit");
		make_sel('s'+i+'_bm'+j+'_bit2',[4],"bit");
		}
		else { 
		make_sel('s'+i+'_bm'+j+'_bit1',[8,4],"bit");
		make_sel('s'+i+'_bm'+j+'_bit2',[8],"bit");
		}
		}

	}}
	}


	// set beam chan from main chan
	if(k == 9 ) { 
        for(var i=1;i<=4;i++) { // subarray loop
	var beams=get_tot_beams(i);
	for(var j=1; j<=beams ; j++) { // beam loop

        	// chan for CDP mode
        	if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD") {
        	make_sel('s'+i+'_bm'+j+'_ch',[32,64,128,256,512,1024,2048,4096],"");
        	document.getElementById('s'+i+'_bm'+j+'_ch').value="2048";
        	document.getElementById('s'+i+'_bm'+j+'_ch').disabled=false;
        	}
        	else {
        	make_sel('s'+i+'_bm'+j+'_ch',[document.getElementById("ch").value],"");
        	document.getElementById('s'+i+'_bm'+j+'_ch').value=document.getElementById("ch").value;
        	document.getElementById('s'+i+'_bm'+j+'_ch').disabled=true;
        	}
	}}
	}


	// make the integration same for for all IA/PA/PC mode 
	if(k == 1 || k == 4){ 
	var beam_no=0;
	for(i=1;i<=4;i++) { // subarray loop 
	var beams=get_tot_beams(i);
	for(j=1; j<=beams ; j++) { // beam loop
		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="IA" || 
		document.getElementById('s'+i+'_bm'+j+'_mod').value=="PA" || 
		document.getElementById('s'+i+'_bm'+j+'_mod').value=="PC" ) {  
		beam_no++;
		if( beam_no == 1) {
		document.getElementById('s'+i+'_bm'+j+'_int').disabled=false;
		var int=document.getElementById('s'+i+'_bm'+j+'_int').value;
		}
		else{
		document.getElementById('s'+i+'_bm'+j+'_int').disabled=true;
		document.getElementById('s'+i+'_bm'+j+'_int').value=int;
		}
		}

		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="CD") {  
		document.getElementById('s'+i+'_bm'+j+'_int').disabled=false;
		}

		if(document.getElementById('s'+i+'_bm'+j+'_mod').value=="PASV") {  
		document.getElementById('s'+i+'_bm'+j+'_int').disabled=true;
		}
	}}
	}


	// check beam hosts
	if( k == 7 ) { 

	var new_val;
	var old_val;
	var beam_no;
	var sub=document.getElementById('sub').value;

	// read values
	beam_no=0;
	for(i=1;i<=sub;i++) { // subarray loop 
	beams=get_tot_beams(i);
	for(j=1; j<=beams ; j++) { // beam loop
		beam_no++;
		if(i==sub_no && j==bem_no) { 
		new_val=document.getElementById('s'+i+'_bm'+j+'_hst').value;
		old_val=beam_host_id[beam_no];
		}
	}}

	// exchange  and apply values
	beam_no=0;
	for(i=1;i<=sub;i++) { // subarray loop 
	beams=get_tot_beams(i);
	for(j=1; j<=beams ; j++) { // beam loop
		beam_no++;

		if(i==sub_no && j==bem_no) { 
		beam_host_id[beam_no]=new_val;
		}
		else { 
		if(beam_host_id[beam_no] == new_val) { beam_host_id[beam_no]=old_val; } 
		}

		// apply for host and beam address
		document.getElementById('s'+i+'_bm'+j+'_hst').value=beam_host_id[beam_no];
		document.getElementById('s'+i+'_bm'+j+'_id').innerHTML=beam_host_id[beam_no];
	}}

	// for non selected host
	if(beam_no < max_beam) { 
	for(i=beam_no;i<=max_beam;i++) { 
	if(beam_host_id[i] == new_val) { beam_host_id[i]=old_val; }
	}}


	}

return(0);
}

function remove_sub_and_beam(i) { 

	// remove all ante from beam
	// set beam mode to OFF
	// hide beams 
        for(j=1;j<=4;j++) {  // beam loop
        document.getElementById('s'+i+'_bm'+j+'_ant').value=[];
        document.getElementById('s'+i+'_bm'+j+'_mod').value="OFF";
	document.getElementById('s'+i+'_bm'+j).style.display="none";
        }

	// remove all antenna from  subarray
	// set band to OFF 
	// set total beam 0 
	// hide beam header 
        document.getElementById('s'+i+'_ant').value=[];
        document.getElementById('s'+i+'_bnd').value="OFF";
        document.getElementById('s'+i+'_bm').value=0;
        document.getElementById('s'+i+'_bm0').style.display="none";
        setdefaultfreq(i);
}

function cnt_ant(i,j) { 
	"use strict";
	if(j==0) { 
	var tot_ant=document.getElementById('s'+i+'_ant').value.split(',').filter(Boolean).length;
        document.getElementById('s'+i+'_antno').innerHTML=pad2(tot_ant);
	}

	if(j>0) { 
	var tot_ant=document.getElementById('s'+i+'_bm'+j+'_ant').value.split(',').filter(Boolean).length;
        document.getElementById('s'+i+'_bm'+j+'_antno').innerHTML=pad2(tot_ant);
	}
	return(tot_ant);
}

function pad2(number) {
   return (number < 10 ? '0' : '') + number
}

// to generate antbox
function get_antbox() { 
		"use strict";
var sub, beam, i, j, k, l=0;
var input, ant_list,bit_list,beam_mode, beam_id,beam_no=0;
input="<center>\n";
input=input + "<table id='anttab' style='border-collapse:collapse;background-color:#ffcccb;'  border='1' cellspacing='0' cellpadding='2'>" ;

input=input+"<tr> <td>Antenna</td>";
for(i=0;i<=29;i++) { input=input+"<td>" + ant[i] + "</td>"; }
input=input+"<td>Total</td>";
input=input+"</tr>\n";

        sub=document.getElementById('sub').value;
	for(i=1;i<=sub;i++) { // subarray loop
	l++;
	input=input+"<tr align=center style='background-color:lightgreen;'><td>Subarray ("+i+")</td>";
        ant_list=document.getElementById('s'+i+'_ant').value;
	bit_list=ant2bit(ant_list);
	for(k=0;k<=29;k++) { 
			if(bit_list[k] == 1)  { input=input+"<td><INPUT type='checkbox' onchange='ant_sel("+i+",0,"+k+","+l+")' checked></td>"; }  
			else                  { input=input+"<td><INPUT type='checkbox' onchange='ant_sel("+i+",0,"+k+","+l+")' ></td>";  } 
			}  
	input=input+"<td>"+cnt_ant(i,0)+"</td>";
	input=input+"</tr>\n";
        beam=document.getElementById('s'+i+"_bm").value;
		for(j=1;j<=beam;j++) { // beam loop
		beam_no++;
		l++;
        	beam_id=document.getElementById('s'+i+'_bm'+j+'_id').innerHTML;
        	ant_list=document.getElementById('s'+i+'_bm'+j+'_ant').value;
        	beam_mode=document.getElementById('s'+i+'_bm'+j+'_mod').value;
		bit_list=ant2bit(ant_list);
		input=input+"<tr align=center style='background-color:lightblue;'><td>Beam ("+beam_id+") " + beam_mode + " </td>";
		for(k=0;k<=29;k++) {
			if(bit_list[k] == 1)  { input=input+"<td><INPUT type='checkbox' onchange='ant_sel("+i+","+j+","+k+","+l+")' checked></td>"; }  
			else                  { input=input+"<td><INPUT type='checkbox' onchange='ant_sel("+i+","+j+","+k+","+l+")' ></td>";  } 
			}  
		input=input+"<td>"+cnt_ant(i,j)+"</td>";
		input=input+"</tr>\n";
		}
	}

input=input+"</table>\n";

input=input+"<input type='button' value= 'Use Selection' onclick='use_antbox();' >";
input=input+"<input type='button' value= 'Cancel Selection' onclick='hide_antbox();' >";
input=input+"</center>\n";

return(input);
} 

// to use the antbox selection
function use_antbox() {
		"use strict";

            	var table = document.getElementById("anttab");
            	var rowCount = table.rows.length-1;

		var sub=0; var beam=0; var id; var ant_list=[]; var bit_list=[];
	    	for(var i=1; i<=rowCount; i++) {
		var leb=table.rows[i].cells[0].innerHTML;
		if( leb.match(/Subarray/g) ) {  sub=leb.replace(/\D/g,''); beam=0; id="s"+sub+"_ant";} 
		if( leb.match(/Beam/g)     ) {                             beam++; id="s"+sub+"_bm"+beam+"_ant";}

		for(var j=1; j<=30; j++ ) { if(table.rows[i].cells[j].childNodes[0].checked == 1)  { bit_list[j-1]=1; } else {  bit_list[j-1]=0; } }
		ant_list=bit2ant(bit_list);
		document.getElementById(id).value=ant_list;
		cnt_ant(sub,beam);
	    	}
		hide_antbox();
} 

function get_optbox(element) { 
		"use strict";
		var row_no=element.parentNode.parentNode.rowIndex-1;
                var cmd=document.getElementsByName("command")[row_no].value;
		var opt_val=document.getElementsByName("option")[row_no].value;

		var input;
		if(cmd == "flux_cal" || cmd == "phase_cal" || cmd == "pol_cal" || cmd == "target") { 
		input="<center>\n";
		if(opt_val == "nobeam") { input=input+"<input type=\"checkbox\" id=\"optid\" checked>"; } 
	        else                    { input=input+"<input type=\"checkbox\" id=\"optid\">"; }
		input=input+"disable beam recording<br>";
		input=input+"<input type='button' value= 'Use Selection' onclick='use_optbox("+row_no+");' >";
		input=input+"<input type='button' value= 'Cancel Selection' onclick='hide_optbox();' >";
		input=input+"</center>\n";
		return(input);
		}

		if(cmd == "power_eq") { 
		input="<center>\n";
		input=input+"power level counts<br>";
		input=input+"<input type='text' id='optid' value='"+opt_val+"'><br>";
		input=input+"<input type='button' value= 'Use Selection' onclick='use_optbox("+row_no+");' >";
		input=input+"<input type='button' value= 'Cancel Selection' onclick='hide_optbox();' >";
		input=input+"</center>\n";
		return(input);
		}

		if(cmd == "loop_start") { 
		input="<center>\n";
		input=input+"No of loop(cycles)<br>";
		input=input+"<input type='text' id='optid' value='"+opt_val+"'><br>";
		input=input+"<input type='button' value= 'Use Selection' onclick='use_optbox("+row_no+");' >";
		input=input+"<input type='button' value= 'Cancel Selection' onclick='hide_optbox();' >";
		input=input+"</center>\n";
		return(input);
		}

		if(cmd == "noise_cal") { 
		input="<center>\n";
		input=input+"Noise cal value<br>";
		input=input+"<select id='optid'><br>";
		for (var i = 0; i < cal_val.length; i++) {
		 if(cal_val[i] == opt_val) { input=input+"<option value="+opt_val+" selected>"+opt_val+"</option><br>"; } 
		 else { input=input+"<option value="+cal_val[i]+">"+cal_val[i]+"</option><br>"; } 
		}
		input=input+"</select><br><br>";
		input=input+"<input type='button' value= 'Use Selection' onclick='use_optbox("+row_no+");' >";
		input=input+"<input type='button' value= 'Cancel Selection' onclick='hide_optbox();' >";
		input=input+"</center>\n";
		return(input);
		}

		if(cmd == "solar_atn") { 
		input="<center>\n";
		input=input+"Solar atenuator value<br>";
		input=input+"<select id='optid'><br>";
		for (var i = 0; i < atn_val.length; i++) {
		 if(atn_val[i] == opt_val) { input=input+"<option value="+opt_val+" selected>"+opt_val+"</option><br>"; } 
		 else { input=input+"<option value="+atn_val[i]+">"+atn_val[i]+"</option><br>"; } 
		}
		input=input+"</select><br><br>";
		input=input+"<input type='button' value= 'Use Selection' onclick='use_optbox("+row_no+");' >";
		input=input+"<input type='button' value= 'Cancel Selection' onclick='hide_optbox();' >";
		input=input+"</center>\n";
		return(input);
		}

		return(0);
}

function use_optbox(row_no) {
		"use strict";
                var cmd=document.getElementsByName("command")[row_no].value;

		// to disable beam recording
		if(cmd == "flux_cal" || cmd == "phase_cal" || cmd == "pol_cal" || cmd == "target") { 
    			if(document.getElementById("optid").checked) {
                	document.getElementsByName("option")[row_no].value="nobeam"; 
			}
			else {
                	document.getElementsByName("option")[row_no].value="--"; 
			}
		}

		// set power eq counts, loop cycles, noise cal values and solar atenuator value
		if(cmd ==  "power_eq" || cmd == "loop_start" || cmd == "noise_cal" || cmd == "solar_atn") { 
               	document.getElementsByName("option")[row_no].value=document.getElementById("optid").value;
		}
 
		hide_optbox();

		gettimeval();
}


function ant_sel(i,j,k,l){ // i=sub, j=beam, k=col_no, l=row_no
	"use strict";
	k=k+1;

    	var table = document.getElementById("anttab");
    	var rowCount = table.rows.length-1;

	var sub=0; var beam=0; var m; var leb; var tot_ant; 

	// if ant is selected remove it from other subarrays and beams
	if(table.rows[l].cells[k].childNodes[0].checked == 1) { 
    	for(m=1; m<=rowCount; m++) {
	leb=table.rows[m].cells[0].innerHTML;
	if( leb.match(/Subarray/g) ) {  sub=leb.replace(/\D/g,''); beam=0; } 
	if( leb.match(/Beam/g)     ) { beam=leb.replace(/\D/g,''); }
	if( sub != i ) {  table.rows[m].cells[k].childNodes[0].checked = 0; } 
	} }

	// if ant is selected in beam then add ant to that subarray
	if(table.rows[l].cells[k].childNodes[0].checked == 1) { 
    	for(m=1; m<=rowCount; m++) {
	leb=table.rows[m].cells[0].innerHTML;
	if( leb.match(/Subarray/g) ) {  sub=leb.replace(/\D/g,''); beam=0; } 
	if( leb.match(/Beam/g)     ) { beam=leb.replace(/\D/g,''); }
	if( sub == i && beam == 0) {  table.rows[m].cells[k].childNodes[0].checked = 1; } 
	} }

	// if ant is removed from subarray then remove it from the its beams
	if(table.rows[l].cells[k].childNodes[0].checked == 0) { 
    	for(m=1; m<=rowCount; m++) {
	leb=table.rows[m].cells[0].innerHTML;
	if( leb.match(/Subarray/g) ) {  sub=leb.replace(/\D/g,''); beam=0; } 
	if( leb.match(/Beam/g)     ) { beam=leb.replace(/\D/g,''); }
	if( sub == i && beam != 0 && j == 0) {  table.rows[m].cells[k].childNodes[0].checked = 0; } 
	} }

	// count no of anntennas 
    	for(i=1; i<=rowCount; i++) {
	tot_ant=0;
	for(j=1; j<=30 ; j++) { if(table.rows[i].cells[j].childNodes[0].checked == 1) { tot_ant++; }  } 
	table.rows[i].cells[31].innerHTML=tot_ant;
	}
} 


// to hide/close antbox 
function hide_antbox() { 
	"use strict";
	$("#antbox").hide(300);
} 

// to open antbox 
function show_antbox() { 
	"use strict";
	document.getElementById('antbox').innerHTML=get_antbox();
	$("#antbox").show(300);
} 

// to hide/close optbox 
function hide_optbox() { 
	"use strict";
	$("#optbox").hide(300);
} 

// to open optbox 
function show_optbox(element) { 
	"use strict";
	var row_no=element.parentNode.parentNode.rowIndex-1;
        var cmd=document.getElementsByName("command")[row_no].value;

	if(cmd == "flux_cal" || cmd == "phase_cal" || cmd == "pol_cal" || cmd == "target") { 
	if(document.getElementById('type3').checked) { 
	document.getElementById('optbox').innerHTML=get_optbox(element);
	$("#optbox").show(300);
	}
	}

	if(cmd =="power_eq" || cmd == "loop_start" || cmd == "noise_cal" || cmd == "solar_atn" ) { 
	document.getElementById('optbox').innerHTML=get_optbox(element);
	$("#optbox").show(300);
	}

	return(0);
} 

// ant to bit
function ant2bit(antn){ 
	"use strict";
	var bitn=[];
	for(var i=0;i<=29;i++) { 
	if(antn.match(ant[i])) { bitn.push(1) ; } 
	else { bitn.push(0); } 
	}
	return(bitn);
}

// bit to ant 
function bit2ant(bitn){ 
	"use strict";
	var antn=[];
	for(var i=0;i<=29;i++) { 
	if(bitn[i] ==1 ) { antn.push(ant[i]); } 
	}
	return(antn.toString());
}

// enable disable walsh when RFI filter is clicked
function show_walsh() { 
	"use strict";

	// enable walsh selection when RFI is OFF 
	if(document.getElementById('rfi').value == 0) { 
		for(j=1;j<=4;j++) { document.getElementById('s'+j+'_wl').disabled=false; }
	}
	if(document.getElementById('rfi').value == 1) { 
		for(j=1;j<=4;j++) { 
		document.getElementById('s'+j+'_wl').value=0; 
		document.getElementById('s'+j+'_wl').disabled=true; 
		}
	}

} 

// STA_cycle to LTA_int relation 
function show_ltaint() { 
	"use strict";

	// read STA cycles 
	var sta_cycles;
	var bw;
	sta_cycles=document.getElementById('sta_int').value;
	bw=document.getElementById('bw').value;

	// set ltaint
	var ltaint;
	if(sta_cycles == 1 ) { ltaint=[0.6,1.3,2.6,5.3,10.7,21.4,42.9]; }
	if(sta_cycles == 2 ) { ltaint=[1.3,2.6,5.3,10.7,21.4,42.9]; }
	if(sta_cycles == 4 ) { ltaint=[2.6,5.3,10.7,21.4,42.9]; }
	if(sta_cycles == 8 ) { ltaint=[5.3,10.7,21.4,42.9]; }
	if(sta_cycles == 16) { ltaint=[10.7,21.4,42.9]; }
	if(sta_cycles == 32) { ltaint=[21.4,42.9]; }

	if(bw <= 100) { 
	if(sta_cycles == 1 ) { ltaint=[1.3,2.6,5.3,10.7,21.4,42.9]; }
	if(sta_cycles == 2 ) { ltaint=[2.6,5.3,10.7,21.4,42.9]; }
	if(sta_cycles == 4 ) { ltaint=[5.3,10.7,21.4,42.9]; }
	if(sta_cycles == 8 ) { ltaint=[10.7,21.4,42.9]; }
	if(sta_cycles == 16) { ltaint=[21.4,42.9]; }
	if(sta_cycles == 32) { ltaint=[42.9]; }
	}

	// apply
	for(j=1;j<=4;j++) { 
		make_sel('s'+j+'_int',ltaint,"");
	}
} 

function show_ltachn() { 
	"use strict";

	// read bw 
	var bw=document.getElementById('bw').value;

	// set ltachn;
	var ltachn;
	var ltachn1;
	if(bw >= 100 ) { ltachn=[16384,8192,4096,2048,1024]; ltachn1=["16K","8K","4K","2K","1K"]; }
	else { ltachn=[16384,8192,4096,2048];ltachn1=["16K","8K","4K","2K"]; } 

	// apply
        var no=ltachn.length-1;

        var select = document.getElementById("ch");

        // remove the options
        while( select.hasChildNodes() ){
        select.removeChild(select.lastChild);
        }

        // add the option
        for (var i = 0; i<=no; i++){
        var opt = document.createElement('option');
        opt.value =ltachn[i];
        opt.innerHTML = ltachn1[i];
        select.appendChild(opt);
        }

	document.getElementById("ch").value = "2048";
} 

// enable disable center/line frequency if bw < 100 MHz.
function show_line() { 
	"use strict";

	if(document.getElementById('bw').value >= 100) {   // read only 
		for(j=1;j<=4;j++) { 
		document.getElementById('s'+j+'_f2').readOnly=true; 
		document.getElementById('s'+j+'_f2').style.backgroundColor="lightgreen";
		}

	}
	else{ // editable
		for(j=1;j<=4;j++) { 
		document.getElementById('s'+j+'_f2').readOnly=false; 
		document.getElementById('s'+j+'_f2').style.backgroundColor="white";
		}
	}

} 


function uploadfile(arg){
	"use strict";

	if(arg == "src" ) { var id="#srcfile"; }
	if(arg == "obs" ) { var id="#obsfile"; }


document.querySelector(id).addEventListener('change', function() {
        // files that user has chosen
        var all_files = this.files;
        if(all_files.length == 0) {
                alert('Error : No file selected');
                return;
        }

        // first file selected by user
        var file = all_files[0];

        // files types allowed
        var allowed_types = [ 'text/plain' ];
        if(allowed_types.indexOf(file.type) == -1) {
                alert('Error : Incorrect file type');
                return;
        }

        // Max 2 MB allowed
        var max_size_allowed = 2*1024*1024
        if(file.size > max_size_allowed) {
                alert('Error : Exceeded size 2MB');
                return;
        }

        // file validation is successfull
        // we will now read the file

        var reader = new FileReader();

        // file reading started
        reader.addEventListener('loadstart', function() {
            //document.querySelector("#file-input-label").style.display = 'none';
        });

        // file reading finished successfully
        reader.addEventListener('load', function(e) {
            var text = e.target.result;

	if(arg == 'src'){ document.getElementById('sourcelist').value=text; }
	if(arg == 'obs'){ loadoldfile(text); }

            // contents of the file
            //document.querySelector("#contents").innerHTML = text;
            //document.querySelector("#contents").style.display = 'block';

            //document.querySelector("#file-input-label").style.display = 'block';
        });


        // file reading failed
        reader.addEventListener('error', function() {
            alert('Error : Failed to read file');
        });

        // file read progress
        reader.addEventListener('progress', function(e) {
            if(e.lengthComputable == true) {
                //document.querySelector("#file-progress-percent").innerHTML = Math.floor((e.loaded/e.total)*100);
                //document.querySelector("#file-progress-percent").style.display = 'block';
            }
        });

        // read as text file
        reader.readAsText(file);
});

}

function check_riseset(){
	"use strict";
	// read start time
	var time1=document.getElementById("dtpicker1").value.split(" ");

	var sourcelist=document.getElementById('sourcelist').value;  
	var co=sourcelist;
            co=co.trim(co);
	    co=co.replace(/["]+/g, '\\\"');
	    co=co.replace(/[\n]+/g, 'newline');
	    co=encodeURIComponent(co);

	var ndata;
	$.ajax({
		type: "POST",
		url: "./cmd.php",
		data: { 'arg': "rst", 'para': co, 'para1': time1[0] },
		async: true,
		success: function(data,status) { 
		ndata=data;
		var mywin= window.open("","_blank"); 
		mywin.document.write(ndata);
		mywin.document.close();
		}
	});

}


function check_weight() { 
	"use strict";

	var bw=document.getElementById("bw").value;  
	var ch=document.getElementById("ch").value;  
	var st=document.getElementById("st").value;  
	var sta=document.getElementById("sta_int").value;  

	var visi_weight=(8*st*ch*st*st)/(sta*2048*4);

	var tot_subarray=document.getElementById("sub").value;  

	var beam_weight=0;
	total_weight=0;
	var fft;  
	for(var i=1;i<=tot_subarray;i++) { 
		var tot_beam=document.getElementById('s'+i+'_bm').value;  
		for(var j=1;j<=tot_beam;j++) { 
		var beam_mod=document.getElementById('s'+i+'_bm'+j+'_mod').value;  
		var beam_bit1=document.getElementById('s'+i+'_bm'+j+'_bit1').value;  
		var beam_int=document.getElementById('s'+i+'_bm'+j+'_int').value;  
		var beam_st=document.getElementById('s'+i+'_bm'+j+'_st').value;  
		// int_time(ms) * bw * 2 * 10^3 / (2*ch) = fft 
		fft=Math.round(beam_int * bw * 2 / (2*ch));  
		if((st == 2) && (beam_mod == "IA" || beam_mod == "PA" || beam_mod == "PC" )) {beam_weight=beam_weight+((    128*bw*beam_st)/(fft*200*(16/beam_bit1))+0.1); }
		if((st == 4) && (beam_mod == "IA" || beam_mod == "PA" || beam_mod == "PC" )) {beam_weight=beam_weight+((0.5*128*bw*beam_st)/(fft*200*(16/beam_bit1))    ); }
		if( beam_mod == "CD" || beam_mod == "PASV" ) {beam_weight=beam_weight+(32*bw/(200*(8/beam_bit1))); }

		}
	}


	total_weight=(visi_weight+beam_weight)*100/64;
	total_weight=total_weight.toFixed(2);
	if(total_weight > 100) {
	if(total_weight > 100 && total_weight <=115) { 
	alert("Warning: Given configuration is not possible.\n" + "Computing budget= " + total_weight+"% (>100%).\nYou may reduce the Spectral chan or increase the STA Cycle.\nYou may increase Beam integ if beam mode is ON.\nComputing budget should be less than or equal to 100%"); 
	return(0); 
	}
	if(total_weight > 115) { 
	alert("Error: Given configuration is not possible.\n" + "Computing budget= " + total_weight+"% (>100%).\nYou may reduce the Spectral chan or increase the STA Cycle.\nYou may increase Beam integ if beam mode is ON.\nComputing budget should be less than or equal to 100%"); 
	return(0); 
	}

	} 
	else { 
	alert("Given configuration is possible" + ",  computing budget= " + total_weight+"% (<=100%)"); 
	}
}

// for bit sel
function make_sel(id,list,unit){ 
	"use strict";

	var no=list.length-1;
	
	var select = document.getElementById(id);

	// remove the options
	while( select.hasChildNodes() ){
    	select.removeChild(select.lastChild);
	}

	// add the option
	for (var i = 0; i<=no; i++){
    	var opt = document.createElement('option');
    	opt.value =list[i]; 
	opt.innerHTML = list[i]+" "+unit; 
	select.appendChild(opt); 
	}
}

// check the source coords
function check_sourcelist(){
	"use strict";
	var sourcelist=document.getElementById('sourcelist').value;  
	var co=sourcelist;
            co=co.trim(co);
	    co=co.replace(/["]+/g, '\\\"');
	    co=co.replace(/[\n]+/g, 'newline');
	    co=encodeURIComponent(co);

	var ndata;
	$.ajax({
		type:"POST",
		url: "./cmd.php",
		data: { 'arg': "chk", 'para': co },
		async: false,
		success: function(data,status) { 
		ndata=data;
		var mywin= window.open("","_blank"); 
		mywin.document.write(ndata);
		mywin.document.close();
		}
	});
}

// add source list to command file 
function addsrc_to_cmdfile(){ 
	"use strict";


	// remove all rows (keep the first row)
        var table = document.getElementById("table2");
        var rowCount = table.rows.length;
	var i;
	for(i=rowCount; i>1; i--) {
	var r=$("#table2").find("tr:eq("+i+")").remove();
	}

	var sourcelist=document.getElementById('sourcelist').value;  
        sourcelist=sourcelist.trim(sourcelist);
	var co=sourcelist.split(/\r\n|\n\r|\n|\r/);
	    co=removeElementsStartingWith(co,'#');
	var nos=co.length;

	// add  rows
	for( i=1; i<=nos;i++) { 
	var r=$("#table2").find("tr:eq("+i+")").clone();
	$("#table2").find("tr:eq("+i+")").after(r);
	}

	// update index 
	for( i=1; i<=nos+1; i++) {
	table.rows[i].cells[0].innerHTML=i;
	}

	for( i=0;i<nos;i++) { 
	var src = co[i].split(/[\t| ]+/);
	if(!src[4]) { src[4]= 0; alert("Warning Observing time for source "+src[0]+" not found, default time is 0 min"); } 
	if(isNaN(src[4])) { src[4]=0; }

	// add target and time
	var rowid='tr:eq('+(i+2)+')';
	$("#table2").find(rowid).find("td:eq(1)").find("select").val("target");
	$("#table2").find(rowid).find("td:eq(2)").find("input").val("--");
	$("#table2").find(rowid).find("td:eq(2)").find("input").attr("readonly","readonly");
	$("#table2").find(rowid).find("td:eq(3)").find("input").val(src[0]);
	$("#table2").find(rowid).find("td:eq(4)").find("input").val(src[4]);
	$("#table2").find(rowid).find("td:eq(3)").find("input").removeAttr("readonly");
	$("#table2").find(rowid).find("td:eq(4)").find("input").removeAttr("readonly");
	$("#table2").find(rowid).css("background-color","");
	}

	gettimeval();
	
}

// load old file

function loadoldfile(txt){ 
	"use strict";

	// fill the project info
	var line=txt.split(/\r\n|\n\r|\n|\r/);
	var nos = line.length;
	var t,i,sub,beam,srclist;

	sub=0; beam=0;
	for(var i=0; i< nos; i++) { 
	
	// project information
	if(line[i].match("{PROJECT_INFO")){

		do { i++; 

		if(line[i].match("USER_NAME")) { 
		t = line[i].split("="); 
		document.getElementById("user").value=t[1].trim(); }

		if(line[i].match("EMAIL_ID")) { 
		t = line[i].split("="); 
		document.getElementById("email").value=t[1].trim(); }

		if(line[i].match("GTAC_CODE")) { 
		t = line[i].split("="); 
		document.getElementById("code").value=t[1].trim(); }

		if(line[i].match("PROJECT_TITLE")) { 
		t = line[i].split("="); 
		document.getElementById("title").value=t[1].trim(); }

		if(line[i].match("DATE_TIME")) { 
		t = line[i].split(/[=(]/); 
		document.getElementById("dtpicker1").value=t[1].trim(); }

		if(line[i].match("SLOT_LENGTH")) { 
		t = line[i].split(/[=h]/); 
		document.getElementById("hh").value=t[1].trim(); }

		if(line[i].match("TYPE_CONTINUUM")) { 
		t = line[i].split("="); 
		document.getElementById("type1").checked=parseInt(t[1].trim()); }

		if(line[i].match("TYPE_LINE")) { 
		t = line[i].split("="); 
		document.getElementById("type2").checked=parseInt(t[1].trim()); }

		if(line[i].match("TYPE_PULSAR")) { 
		t = line[i].split("="); 
		document.getElementById("type3").checked=parseInt(t[1].trim()); show_beam(0);}
		} while(line[i].trim().charAt(0) !== "{" && line[i].trim().charAt(0) !== "}");

	} // end prj info 

	// Receiver and Backend setup (common)
	if(line[i].match("{RECEIVER_AND_BACKEND_SETUP")){

		do { i++; 
		if(line[i].match("GWB_VERSION")) { 
		t = line[i].split("="); 
		gwb_version=t[1].trim();}

		if(line[i].match("TOTAL_SUBARRAY")) { 
		t = line[i].split("="); 
		document.getElementById("sub").value=t[1].trim(); 

		// add subarrays
		for(var j=1; j<=parseInt(t[1].trim()); j++) { show_sub(j); }
		}

		if(line[i].match("BAND_WIDTH")) { 
		t = line[i].split(/[=M]/); 
		document.getElementById("bw").value=t[1].trim();show_line();}

		if(line[i].match("SPECTRAL_CHAN")) { 
		t = line[i].split("="); 
		document.getElementById("ch").value=t[1].trim();getfreqval(0);}

		if(line[i].match("STOKES")) { 
		t = line[i].split("="); 
		document.getElementById("st").value=t[1].trim(); }

		if(line[i].match("STA_INTEG")) { 
		t = line[i].split("="); 
		document.getElementById("sta_int").value=t[1].trim(); }

		if(line[i].match("REALTIME_RFI_FILTER")) { 
		t = line[i].split("="); 
		document.getElementById("rfi").value=t[1].trim(); }

		if(line[i].match("POLY_PHASE_FILTER")) { 
		t = line[i].split("="); 
		document.getElementById("pfb").value=parseInt(t[1].trim()); }

		if(line[i].match("GPU_GATES")) { 
		t = line[i].split("="); 
		document.getElementById("gates").value=parseInt(t[1].trim()); }

		} while(line[i].trim().charAt(0) !== "{" && line[i].trim().charAt(0) !== "}");

	} // end receiver setup (common)

	// subarray setup 
	if(line[i].match("{SUBARRAY_SETUP")){

		sub++; beam=0;

		do { i++; 

		if(line[i].match("ANTENNA_LIST")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_ant').value=t[1].trim(); cnt_ant(sub,0);}

		if(line[i].match("RF_BAND")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_bnd').value=get_band_val(t[1].trim(),"name");}

		if(line[i].match("START_FREQ")) { 
		t = line[i].split(/[=M]/); 
		document.getElementById('s'+sub+'_f1').value=t[1].trim(); }

		if(line[i].match("CENTER_FREQ")) { 
		t = line[i].split(/[=M]/); 
		document.getElementById('s'+sub+'_f2').value=t[1].trim(); }

		if(line[i].match("STOP_FREQ")) { 
		t = line[i].split(/[=M]/); 
		document.getElementById('s'+sub+'_f3').value=t[1].trim(); }

		if(line[i].match("GAB_LO")) { 
		t = line[i].split(/[=M]/); 
		document.getElementById('s'+sub+'_f4').value=t[1].trim(); 
			if(line[i].match("default")) { document.getElementById('s'+sub+'_f5').value=1; }  
			else { document.getElementById('s'+sub+'_f5').value=-1; }
			gablomode(sub);
			getfreqval(sub);
		}

		if(line[i].match("LTA_INTEG")) { 
		t = line[i].split(/[=s]/); 
		document.getElementById('s'+sub+'_int').value=t[1].trim(); }

		if(line[i].match("WALSH_MODU")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_wl').value=parseInt(t[1].trim()); }

		if(line[i].match("TOTAL_BEAM")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_bm').value=parseInt(t[1].trim()); 
		// add beams
		for(var j=1; j<=parseInt(t[1].trim()); j++) { show_beam(sub); }
		}

		} while(line[i].trim().charAt(0) !== "{" && line[i].trim().charAt(0) !== "}");

	} // end subarry setup 

	// beam setup 
	if(line[i].match("{BEAM_SETUP")){

		beam++;

		do { i++; 

		if(line[i].match("BEAM_NO")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_bm'+beam+'_id').innerHTML=t[1].trim();
		document.getElementById('s'+sub+'_bm'+beam+'_hst').value=t[1].trim(); }

		if(line[i].match("BEAM_ANTENNA_LIST")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_bm'+beam+'_ant').value=t[1].trim(); cnt_ant(sub,beam);}

		if(line[i].match("BEAM_MODE")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_bm'+beam+'_mod').value=t[1].trim();
		check_beam(sub,beam,1);
		}

		if(line[i].match("BEAM_BIT1")) { 
		t = line[i].split(/[=(]/); 
		document.getElementById('s'+sub+'_bm'+beam+'_bit1').value=t[1].trim();
		check_beam(sub,beam,2);
		}

		if(line[i].match("BEAM_BIT2")) { 
		t = line[i].split(/[=(]/); 
		document.getElementById('s'+sub+'_bm'+beam+'_bit2').value=t[1].trim();}

		if(line[i].match("BEAM_INTEG")) { 
		t = line[i].split(/[=m]/); 
		document.getElementById('s'+sub+'_bm'+beam+'_int').value=t[1].trim(); }

		if(line[i].match("BEAM_STOKES")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_bm'+beam+'_st').value=t[1].trim(); }

		if(line[i].match("BEAM_CHAN")) { 
		t = line[i].split("="); 
			if(parseInt(t[1]) && document.getElementById('s'+sub+'_bm'+beam+'_mod').value == "CD") { 
			document.getElementById('s'+sub+'_bm'+beam+'_ch').value=parseInt(t[1]); }
			else { document.getElementById('s'+sub+'_bm'+beam+'_ch').value=document.getElementById("ch").value; } 
		}

		if(line[i].match("BEAM_DIR")) { 
		t = line[i].split("="); 
		document.getElementById('s'+sub+'_bm'+beam+'_dir').value=t[1].trim();}

		} while(line[i].trim().charAt(0) !== "{" && line[i].trim().charAt(0) !== "}");

	} // end beam setup 

	// source_list 
	if(line[i].match("{SOURCE_LIST")){

		srclist="";
		do { i++; 

		//if(!line[i].match("#") && !line[i].match("{") && !line[i].match("}")) {  // to handel the comment in source list
		if(!line[i].match("#Source") && !line[i].match("{") && !line[i].match("}")) { 
		srclist=srclist+"\n"+line[i];
		}

		document.getElementById('sourcelist').value=srclist.trim();

		} while(line[i].trim().charAt(0) !== "{" && line[i].trim().charAt(0) !== "}");

	} // end source_list 

	// command file  
	if(line[i].match("{COMMAND_FILE")){

		// read table rows
        	var table = document.getElementById("table2");
        	var rowCount = table.rows.length;

		// copy the first row
		var r1=$("#table2").find("tr:eq(1)").clone();

		// remove all rows (keep the 0th row)
		var j;
		for(j=rowCount; j>=1; j--) {
		var r=$("#table2").find("tr:eq("+j+")").remove();
		}

		j=0;
		do { i++; 
		if(!line[i].match("#") && !line[i].trim().charAt(0).match("}")) { 
		t=line[i].split(/[ ]+/);
		j++;

			if(j>1) { r1=$("#table2").find('tr:eq('+(j-1)+')').clone(); } 

			// add  rows
			$("#table2").find('tr:eq('+(j-1)+')').after(r1);

			// update index 
			table.rows[j].cells[0].innerHTML=j;

			// add targets 
			var rowid='tr:eq('+(j)+')';
			$("#table2").find(rowid).find("td:eq(1)").find("select").val(t[0]);
			$("#table2").find(rowid).find("td:eq(2)").find("input").val(t[1]);
			$("#table2").find(rowid).find("td:eq(3)").find("input").val(t[2]);
			$("#table2").find(rowid).find("td:eq(4)").find("input").val(t[3]);


			// make loop readonly
 			if(t[0].match(/loop/g)) {
			$("#table2").find(rowid).find("td:eq(3)").find("input").attr("readonly","readonly");
			$("#table2").find(rowid).find("td:eq(4)").find("input").attr("readonly","readonly");
			}
			else { 
			$("#table2").find(rowid).find("td:eq(3)").find("input").removeAttr("readonly");
			$("#table2").find(rowid).find("td:eq(4)").find("input").removeAttr("readonly");
			}

			gettimeval();
		
		}
		} while(line[i].trim().charAt(0) !== "{" && line[i].trim().charAt(0) !== "}");

	} // end command file 

	// special requirment 
	if(line[i].match("{SPECIAL_REQUIREMENT") || line[i].match("{SPECIAL_REQUIRMENT")){

		var spreq="";
		do { i++; 

		if(!line[i].match("}")) { 
		spreq=spreq+"\n"+line[i];
		}

		document.getElementById('spec_req').value=spreq.trim();

		} while(line[i].trim().charAt(0) !== "{" && line[i].trim().charAt(0) !== "}");

	} // end special requirment 

	} // end for loop
} // end loadoldfile

function gablomode(arg){ 
	"use strict";
	var sub=arg;
	var mode=document.getElementById('s'+sub+'_f5').value;
	if(mode == 1) {   // default 
	document.getElementById('s'+sub+'_f4').readOnly=true;
	document.getElementById('s'+sub+'_f4').style.backgroundColor="lightgreen";
	document.getElementById('s'+sub+'_f4').value=getgablo(sub);
	} 
	else {   // custom
	alert("Warning: Exercise caution when selecting a custom GAB LO, as it may cause frequency aliasing in the spectrum, resulting in inaccurate data!!");
	document.getElementById('s'+sub+'_f4').readOnly=false;
	document.getElementById('s'+sub+'_f4').style.backgroundColor="white";
	} 
}

function getgablo(arg){ 
	"use strict";
	var sub=arg;
	var band=document.getElementById('s'+sub+'_bnd').value;
	if(band == "OFF") { 
	alert("Please select the valid RF band");
	return(0);
	}
	var gablo=get_band_val(band,"gablo");
	return(gablo);
}

function removeElementsStartingWith(array, startChar) {
	"use strict";
    	for (let i = 0; i < array.length; ) {
        if (array[i][0] === startChar) {
            array.splice(i, 1);
        } else {
            i++;
        }
    	}
    return array;
}

function keepFirstWord(arr) {
    'use strict';
    let result = [];
    for (let i = 0; i < arr.length; i++) {
        // Split the string by one or more whitespace characters and take the first element
        let firstWord = arr[i].split(/\s+/)[0];
        result.push(firstWord);
    }
    return result;
}