nur farazi nurfarazi

## corona-response-algorithm
export const covid19UserResponse = functions.https.onCall(async (data, context) => {
  try {
    // https://docs.google.com/spreadsheets/d/13x-6koKiqRnIK6_trJX-abLJyi65OzqV621u9iwM1qw/edit#gid=2008915096

    await admin.firestore().collection('corona-user-responses').add(data);

    // tslint:disable-next-line:radix
    let is_elder = parseInt(data['age']['answer']) > 60 ? '1' : '0';
    let has_diseases_history = data['high_risk']['answer'] === 'true' ? '1' : '0';

## Node tcp server
// Include Nodejs' net module.
const Net = require('net');
// The port on which the server is listening.
const port = 8080;

// Use net.createServer() in your code. This is just for illustration purpose.
// Create a new TCP server.
const server = new Net.Server();
// The server listens to a socket for a client to make a connection request.
// Think of a socket as an end point.

## How to update multiple documents at once in Firestore
resetScore(): Promise<void> {
  return this.usersCollectionRef.ref.get().then(resp => {
    console.log(resp.docs)
    let batch = this.afs.firestore.batch();

    resp.docs.forEach(userDocRef => {
      batch.update(userDocRef.ref, {'score': 0, 'leadsWithSalesWin': 0, 'leadsReported': 0});
    })
    batch.commit().catch(err => console.error(err));
  }).catch(error => console.error(error))

## Remove duplicates from mongodb
db.usersProject.aggregate([
 {
     "$group": {
         _id: {projectId: "$projectId"},
         dups: { $addToSet: "$_id" } ,
         count: { $sum : 1 }
     }
 },
 {
     "$match": {

## mongodb database field update
db.person.find().snapshot().forEach(
    function (elem) {
        db.person.update(
            {
                _id: elem._id
            },
            {
                $set: {
                    name: elem.firstname + ' ' + elem.lastname
                }

## moment
var start = moment();
var end   = moment().add(1, 'months');;
end.from(start);       // "in 5 days"
end.from(start, true);

console.log(end.from(start, true))

## calculate average using JS reduce
var scores = [4, 13, 2, 66, 12, 5];
var result = scores.reduce((total, score) => total + score) / scores.length;
console.log(result);

## index.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
<script src="https://code.jquery.com/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" type="text/css" />

## Json2CSV-farazi
function Json2CSV(objArray)
{
var
getKeys = function(obj){
var keys = [];
for(var key in obj){
keys.push(key);
}
return keys.join();
}, array = typeof objArray != 'object' ? JSON.parse(objArray) : objArray

## mongoose push to array
Student.findByIdAndUpdate(
            req.body._id, {
                $push: {
                    "comments": req.body.imagelink
                }
            },
            function (err, model) {
                if (err) {
                    console.log(err);
                    res.send(err);
	export const covid19UserResponse = functions.https.onCall(async (data, context) => {
	try {
	// https://docs.google.com/spreadsheets/d/13x-6koKiqRnIK6_trJX-abLJyi65OzqV621u9iwM1qw/edit#gid=2008915096

	await admin.firestore().collection('corona-user-responses').add(data);

	// tslint:disable-next-line:radix
	let is_elder = parseInt(data['age']['answer']) > 60 ? '1' : '0';
	let has_diseases_history = data['high_risk']['answer'] === 'true' ? '1' : '0';
	// Include Nodejs' net module.
	const Net = require('net');
	// The port on which the server is listening.
	const port = 8080;

	// Use net.createServer() in your code. This is just for illustration purpose.
	// Create a new TCP server.
	const server = new Net.Server();
	// The server listens to a socket for a client to make a connection request.
	// Think of a socket as an end point.
	resetScore(): Promise<void> {
	return this.usersCollectionRef.ref.get().then(resp => {
	console.log(resp.docs)
	let batch = this.afs.firestore.batch();

	resp.docs.forEach(userDocRef => {
	batch.update(userDocRef.ref, {'score': 0, 'leadsWithSalesWin': 0, 'leadsReported': 0});
	})
	batch.commit().catch(err => console.error(err));
	}).catch(error => console.error(error))
	db.person.find().snapshot().forEach(
	function (elem) {
	db.person.update(
	{
	_id: elem._id
	},
	{
	$set: {
	name: elem.firstname + ' ' + elem.lastname
	}
	var start = moment();
	var end = moment().add(1, 'months');;
	end.from(start); // "in 5 days"
	end.from(start, true);

	console.log(end.from(start, true))
	var scores = [4, 13, 2, 66, 12, 5];
	var result = scores.reduce((total, score) => total + score) / scores.length;
	console.log(result);
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width">
	<title>JS Bin</title>
	</head>
	<body>
	<script src="https://code.jquery.com/jquery.min.js"></script>
	<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
	function Json2CSV(objArray)
	{
	var
	getKeys = function(obj){
	var keys = [];
	for(var key in obj){
	keys.push(key);
	}
	return keys.join();
	}, array = typeof objArray != 'object' ? JSON.parse(objArray) : objArray
	Student.findByIdAndUpdate(
	req.body._id, {
	$push: {
	"comments": req.body.imagelink
	}
	},
	function (err, model) {
	if (err) {
	console.log(err);
	res.send(err);