An easy way to fill preferences in http://psd.bits-pilani.ac.in/

___lazyPSPref__.js

/***
	When you are too lazy to drag stuff (and 295 of them)

	( An easy way to fill preferences in http://psd.bits-pilani.ac.in/ )
	
	res : contents of getPBDetail which is loaded in http://psd.bits-pilani.ac.in/Student/ViewProblemBanks.aspx
 
***/

// #just_snippets

// get info of all stations
info = eval(res.d)

// create an array containing distinct values of any key
var indPref = info.map(e => e.IndustryDomain).reduce(function(acc, e){
	if(acc.indexOf(e) == -1){
		acc.push(e)
	}
	return acc
}, [])

// helpers to manipuate the prefrence array
function swap(arr, a, b){
	var t = arr[a];
	arr[a] = arr[b];
	arr[b] = t;
	return arr;
}

function move(arr, a, b){
	l = arr[a];
	arr.splice(a, 1);
	arr.splice(b, 0, l);
	return arr;
}

// preference settings
var pref = [{
	arr: indPref,
	key: "IndustryDomain",
	weight: 15
},
{
	arr: cityPref,
	key: "City",
	weight: 20
}
]

// score of a station
function score(a){
	var score = pref.reduce((acc, e)=>{
		var len = e.arr.length;
		return acc + e.weight*(len - e.arr.indexOf(a[e.key])/len);
	}, 0)	
	score *= ((a.Tags.search("A7") == -1)?1:2);
	score += a.totalstudent/10;
	return score
}

// sort and print info
function sp(){
	info.sort((a, b)=>{
		return score(b) - score(a)
	})
	info.forEach((e)=>{
		console.log(e.City + " "+ e.IndustryDomain + " "+ e.CompanyName);
	});
}

// make a string to be sent to be saved
var str = "[";
info.forEach((el, i)=>{
			str += "{"
            str += "'isActive':'1',"
            str += "'PreferenceNo':'" + (i + 1) + "','StationId':'" + el.StationId + "',"
            str += "'Accommodation':'" + "true" + "',"	// this comma!
            str += "},"
})
str = str.substr(0, str.length - 1);
str += "]";

// save the preference
saveprefdata(str, "", 0)  // run this from http://psd.bits-pilani.ac.in/Student/StudentStationPreference.aspx

// tadaa