Develop Reference

Getting total Number of User Items in Firebase Realtime database in javascript

I have been trying to get amount of users that have same "referralId" in my firebase Realtime database,
users {
AY35bkc5cbkufik8gfe3vjbmgr {
email: james #gmail.com
verify: none
referralid: AY35ja35
}
B16fty9jDchfNgdx7Fxnjc5nxf5v {
email: mobilewisdom #gmail.com
verify: none
referralid: AY35ja35
}
}
How can I use JavaScript to count the amount of account with referralid:AY35ja35
I tried:
const query = ref.orderByChild('referralid').equalTo('AY35ja35');
query.get().then((results) => {
console.log(Object.keys(results.val()).length);
results.forEach((snapshot) => {
console.log(snapshot.key, snapshot.val());
});
});
But am getting this error in my console:
Uncaught TypeError: query.get is not a function

In v8/namespaced syntax that'd be:
const ref = firebase.database().ref('users');
const query = ref.orderByChild('referralid').equalTo('AY35ja35');
const results = await query.get();
console.log(Object.keys(results.val()).length);
results.forEach((snapshot) => {
console.log(snapshot.key, snapshot.val());
});
Or if you're in an environment where await doesn't work:
const ref = firebase.database().ref('users');
const query = ref.orderByChild('referralid').equalTo('AY35ja35');
query.get().then((results) => {
console.log(Object.keys(results.val()).length);
results.forEach((snapshot) => {
console.log(snapshot.key, snapshot.val());
});
});
In v9/modular syntax the equivalent would be:
const ref = ref(getDatabase(), 'users');
const query = query(ref, orderByChild('referralid'), equalTo('AY35ja35'));
const results = await get(query);
console.log(Object.keys(results.val()).length);
results.forEach((snapshot) => {
console.log(snapshot.key, snapshot.val());
});
Or if you're in an environment where await doesn't work:
const ref = ref(getDatabase(), 'users');
const query = query(ref, orderByChild('referralid'), equalTo('AY35ja35'));
get(query).then((results) => {
console.log(Object.keys(results.val()).length);
results.forEach((snapshot) => {
console.log(snapshot.key, snapshot.val());
});
});

Firstly you will have to run a query to get the data from firebase using either firebase package, axios or fetch
Your data is fetched in form of Object containing different objects. You can either user for .. in .. loop to iterate through the object.
var count = 0
for (const user in users) {
if (user.referralid==="AY35ja35") {
count++
}
}
Or use Object.values(object) function to get array of users. Now you can use a JavaScript array function such as map or filter.
by using map. you can do it like this:
var count=0
user.map(user=>{if(user.referralid==="AY35ja35"){count++})
or by using filter
const matchedUsers = user.filter(user=>(user.referralid==="AY35ja35"))
const count = matchedUsers.length
Hope this helps :)

Firebase writing data with variable via REST

in my app I am getting the uid of the current user by:
also I get the username from :
console.log gives me the right name.
But when I try to write to my db via:
https://movieapp-8a157.firebaseio.com/users/${username}/${authUser}/posts.json?auth=${token}
It doesnt work. If I remove the ${username} it will write in the correct path. Any ideas? I edited my post for more clearness.
export const postJob = data => {
return async (dispatch, getState) => {
const randomColors = ["#f3a683"];
const colorNumber = Math.floor(Math.random() * 20) + 1;
const bgColor = randomColors[colorNumber];
const val = getState();
const userId = val.auth.userId;
const rules = {
description: "required|min:2"
};
const messages = {
required: field => `${field} is required`,
"description.min": "job description is too short"
};
try {
await validateAll(data, rules, messages);
const token = await firebase
.auth()
.currentUser.getIdToken(true)
.then(function(idToken) {
return idToken;
});
firebase.auth().onAuthStateChanged(function(user) {
if (user) {
// User is signed in.
var displayName = user.displayName;
var email = user.email;
var emailVerified = user.emailVerified;
var photoURL = user.photoURL;
var isAnonymous = user.isAnonymous;
var uid = user.uid;
var providerData = user.providerData;
// ...
} else {
// User is signed out.
// ...
}
});
var user = firebase.auth().currentUser;
const authUser = user.uid;
const username = await firebase
.database()
.ref("users/" + authUser + "/name")
.once("value", function(snapshot) {
console.log("################", snapshot.val());
});
//console.log("#####################", authUser);
const response = await fetch(
`https://movieapp-8a157.firebaseio.com/users/${username}/${authUser}/posts.json?auth=${token}`,
{
method: "POST",
headers: {
"Content-Type": "application/json"
},
body: JSON.stringify({
titel: data.titel,
fname: data.fname,
description: data.description,
cover: data.cover,
friend: data.friend,
ownerId: userId,
bgColor: bgColor
})
}
);
const resData = await response.json();

Your code that's getting the UID isn't working the way you exepct. The auth state listener is asynchronous and is triggering after the line of code that accessesfirebase.auth().currentUser. That line of code is actually giving you the current user before the sign-in completes. That means it's going to be undefined.
You're then using that undefined value to build a reference to a location in the database. This is causing the actual reference to be something other than what you expect. You should add debug logging to see this yourself.
You should be using the callback to determine when exactly the user is signed in, and only read and write that user's location. This means that you should probably move the lines of code that write the database into the callback, when you know that user is correct, and use user.uid to build the database reference for reading and writing.

How to requestPlayersProfile with node-globaloffensive

I'm working a few hours with this and I have absolute no idea what I have to do, never did anything with node.js or even javascript.
Thats my code so far:
const SteamUser = require('steam-user');
const SteamTotp = require('steam-totp');
const GlobalOffensive = require('globaloffensive');
const config = require('./config');
let user = new SteamUser();
let csgo = new GlobalOffensive(user);
csgo.on('debug', console.log);
user.on('error', console.error);
const logInOptions = {
accountName: config.accountName,
password: config.password
}
user.logOn(logInOptions);
user.on('loggedOn', res => {
console.log("Logged into Steam as " + user.steamID.getSteam3RenderedID());
user.setPersona(SteamUser.EPersonaState.Online);
user.gamesPlayed(730);
csgo.on('connectionStatus', console.log);
csgo.on('connectedToGC', () => {
console.log('Connected to GC!');
csgo.on('getaccountData', () => {
console.log('Got account data!');
});
});
});
So as I understood I need the accountData to get the informations I want requestPlayersProfile(steamid[, callback])
But how do I get the accountData? Just tried it the "same" way I did with the game coordinator.
https://github.com/DoctorMcKay/node-globaloffensive

On Deploying the Firebase Cloud Function getting an error of "Each then should return a value or throw"

I am new to Cloud Functions so I having issues with below code, the error is in the last part where the console.log is mentioned, please assist what shall I been done to deploy the Function successfully, as I am following a tutorial there is no such error for the name.
'use-strict'
const functions = require('firebase-functions');
const admin = require("firebase-admin");
admin.initializeApp(functions.config().firebase);
exports.sendNotifications = functions.firestore.document("users/{user_id}/notifications/{notification_id}").onWrite(event => {
const user_id = event.params.user_id;
const notification_id = event.params.notification_id;
return admin.firestore().collection("users").doc(user_id).collection("notifications").doc(notification_id).get().then(queryResult => {
const from_user_id = queryResult.data().from;
const message = queryResult.data().message;
const from_data = admin.firestore().collection("users").doc(from_user_id).get();
const to_data = admin.firestore().collection("user").doc(user_id).get();
return Promise.all([from_data, to_data]).then(result => {
const from_name = result[0].data().name;
const to_name = result[1].data().name;
const token_id = result[1].data().token_id;
const payload = {
notification: {
title: "Notification from:" + from_name,
body: message,
icon: "default"
}
};
return admin.messaging().sendToDevice(token_id, payload).then(result =>{
console.log("notifcation sent");
});
});
});
});

By chaining your Promises and returning null in the last then(), as follows, you should solve your problem:
exports.sendNotifications = functions.firestore.document("users/{user_id}/notifications/{notification_id}").onWrite(event => {
const user_id = event.params.user_id;
const notification_id = event.params.notification_id;
return admin.firestore().collection("users").doc(user_id).collection("notifications").doc(notification_id).get()
.then(queryResult => {
const from_user_id = queryResult.data().from;
const message = queryResult.data().message;
const from_data = admin.firestore().collection("users").doc(from_user_id).get();
const to_data = admin.firestore().collection("user").doc(user_id).get();
return Promise.all([from_data, to_data]);
})
.then(result => {
const from_name = result[0].data().name;
const to_name = result[1].data().name;
const token_id = result[1].data().token_id;
const payload = {
notification: {
title: "Notification from:" + from_name,
body: message,
icon: "default"
}
};
return admin.messaging().sendToDevice(token_id, payload)
})
.then(messagingResponse => {
console.log("notification sent");
return null; //Note the return null here, watch the 3 videos about "JavaScript Promises" from the Firebase video series: https://firebase.google.com/docs/functions/video-series/
});
});
You may have a look at the corresponding MDN documentation: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises#Chaining
Also, note that, in your code, it seems that you are not using the to_name constant.

Firebase Cloud functions timeout

The following function works well when tested with shell, and data are created in firestore.
When pushed in prod, it returns Function execution took 60002 ms, finished with status: 'timeout'
Any input?
exports.synchronizeAzavista = functions.auth.user().onCreate(event => {
console.log('New User Created');
const user = event.data;
const email = user.email;
const uid = user.uid;
return admin.database().ref(`/delegates`)
.orderByChild(`email`)
.equalTo(email)
.once("child_added").then(snap => {
const fbUserRef = snap.key;
return admin.firestore().collection(`/users`).doc(`${fbUserRef}`).set({
email: email,
uid: uid
}).then(() => console.log("User Created"));
});
});
Edit
I've update my code with the following, but I still getting Function returned undefined, expected Promise or value but I can't identify where my function return undefined. Why my getUser() function does not return anything?
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.synchronizeAzavista = functions.auth.user().onCreate(event => {
console.log('New User Created');//This log
const user = event.data;
const email = user.email;
const uid = user.uid;
console.log('Const are set');//This log
getUser(email).then(snap => {
console.log("User Key is " + snap.key);//No log
const fbUserRef = snap.key;
return admin.firestore().collection(`/users`).doc(`${fbUserRef}`).set({
email: email,
uid: uid
});
}).then(() => console.log("User Data transferred in Firestore"));
});
function getUser(email) {
console.log("Start GetUser for " + email);//This log
const snapKey = admin.database().ref(`/delegates`).orderByChild(`email`).equalTo(email).once("child_added").then(snap => {
console.log(snap.key);//No Log here
return snap;
});
return snapKey;
}

You're not returning a promise from your write to Firestore.
exports.synchronizeAzavista = functions.auth.user().onCreate(event => {
const user = event.data;
const email = user.email;
const uid = user.uid;
return admin.database().ref(`/delegates`)
.orderByChild(`email`)
.equalTo(email)
.once("child_added").then(snap => {
const fbUserRef = snap.key;
return admin.firestore().collection(`/users`).doc(`${fbUserRef}`).set({
email: email,
uid: uid
});
});
});