I set up my React project to use firebase auth using the modular v9 SDK like so. I now would like to create other hooks like useAnalytics, useFirestore, etc, that will allow me to access those utilities in components that need them. But if I use this same pattern for other firebase services, I will end up having to wrap my app with several contexts.
So instead of this auth provider component, I'm thinking of replacing it with a FirebaseProvider component that will wrap everything, but I am not sure if that is correct, or how I would integrate it with the existing auth code below.
import React, {useState, useContext, useEffect, createContext } from "react"
import {
getAuth,
signOut,
signInWithEmailAndPassword,
createUserWithEmailAndPassword,
} from "firebase/auth";
// I need to move this elsewhere like index.js
import { initializeApp } from "firebase/app";
firebase.initializeApp(<app config object>);
const auth = getAuth();
const authContext = createContext();
export const useAuth = () => {
return useContext()
}
// my App component is wrapped with this JSX element
export const ProvideAuth = ({children}) => {
const auth = useProvideAuth();
return <authContext.Provider value={auth}></authContext.Provider>
}
const useProvideAuth = () => {
const [user, setUser] = useState(null)
const signIn = (email, password) => {
signInWithEmailAndPassword(auth, email, password).then((res) => {
setUser(res.user)
})
}
const createUser = ...
const signOut = ...;
useEffect(() => {
const unsubscribe = onAuthStateChanged(auth, (user) => {
if (user) {
setUser(user);
} else {
setUser(false);
}
});
// remove listener on unmount
return () => unsubscribe();
}, []);
return {user, signIn, signOut, createUser};
}
I tried placing initializeApp in the index.js, but that code never seems to run and causes the authentication to fail.
Related
I am building an app using next13 (to make use of server side components), however, for some reason my existing AuthContext is not working. I am getting the following error:
TypeError: React.createContext is not a function
From what I can see, the AuthContext needs to be set to 'use client', as there is use of useState and useEffect within it, but for some reason the application no longer recognises that createContext is actually a function.
This is my AuthContext:
'use client';
import { createContext, useContext, useEffect, useState } from 'react';
import { onAuthStateChanged, signOut, signInWithEmailAndPassword, createUserWithEmailAndPassword } from 'firebase/auth';
import { auth } from '../config';
const AuthContext = createContext({});
export const useAuth = () => useContext(AuthContext);
export const AuthContextProvider = ({ children }) => {
const [user, setUser] = useState(null);
const [loading, setLoading] = useState(true);
useEffect(() => {
const unsubscribe = onAuthStateChanged(auth, (user) => {
setLoading(true);
setUser(user ?? null);
setLoading(false);
});
return () => unsubscribe();
}, []);
const login = async (email, password) => {
await signInWithEmailAndPassword(auth, email, password);
};
const logout = async () => {
setUser(null);
await signOut(auth)
};
const register = async (email, password) => {
try {
const userCred = await createUserWithEmailAndPassword(auth, email, password);
await userCred.user.sendEmailVerification({
url: process.env.NEXT_PUBLIC_HOST
});
} catch (err) {
return {
errorCode,
errorMessage
}
}
};
return (
<AuthContext.Provider value={{ user, loading, login, logout, register }}>
{children}
</AuthContext.Provider>
);
};
The AuthContext is then used in my main layout page within the app directory:
'use client';
import { CssBaseline, Container } from '#mui/material';
import { NavBar, Footer } from '../components';
import { AuthContextProvider } from '../context';
import '#fontsource/roboto/300.css';
import '#fontsource/roboto/400.css';
import '#fontsource/roboto/500.css';
import '#fontsource/roboto/700.css';
const RootLayout = ({ children }) => {
return (
<html lang='en'>
<head>
<link rel="icon" href="/favicon.ico" />
</head>
<body>
<AuthContextProvider>
<CssBaseline />
<NavBar />
<Container component='main' sx={{ padding: 3 }}>
{children}
</Container>
<Footer />
</AuthContextProvider>
</body>
</html>
);
}
export default RootLayout;
I am unsure if I need to take a different approach to authentication, perhaps using the next-auth package, but I am not sure what the best way would be.
Cheers for any help!
Here's an example of useContext I am using on my application.
'use client'
import { createContext, useContext, useEffect, useState } from 'react'
import { getAuth, User } from 'firebase/auth'
import { initializeApp, getApps, getApp } from 'firebase/app'
import nookies from 'nookies'
const firebaseConfig = {
...
}
getApps().length ? getApp() : initializeApp(firebaseConfig)
const auth = getAuth()
const AuthContext = createContext<User | null>(null)
export function AuthProvider({ children }: any) {
//
const [user, setUser] = useState<User | null>(null)
useEffect(() => {
return auth.onIdTokenChanged(async (user) => {
if (!user) {
setUser(null)
nookies.set(undefined, 'token', '', { path: '/' })
} else {
const token = await user.getIdToken()
setUser(user)
nookies.set(undefined, 'token', token, { path: '/' })
}
})
}, [])
useEffect(() => {
const handle = setInterval(async () => {
const user = auth.currentUser
if (user) await user.getIdToken(true)
}, 15 * 60 * 1000)
return () => clearInterval(handle)
}, [])
return <AuthContext.Provider value={user}>{children}</AuthContext.Provider>
}
export const useAuth = () => {
return useContext(AuthContext)
}
Note that we're also forcing token refresh every 15 minutes, and saving that to cookies. You can access cookies in server pages using the new next13 cookies package.
You can also get the user by importing the useAuth hook we just created.
For example
'use client'
import useAuth from '../context/AuthProvider'
const Page = () => {
const {user} = useAuth()
// Rest of your application
}
Hope it helps
I have created a Next.js application and am using Firebase authentication. I have used the useContext hook for managing user state across my application.
The code for the AuthContext is as follows:
auth.js
import { createContext, useState, useEffect, useContext } from "react";
import { getAuth, onIdTokenChanged } from "firebase/auth";
const AuthContext = createContext({});
export const AuthProvider = ({children}) => {
const auth = getAuth();
const [user, setUser] = useState(null);
useEffect(() => {
return(onIdTokenChanged(auth, (user) => {
if(user) {
setUser(user);
} else {
setUser(null);
}
}))
},[]);
return(<AuthContext.Provider value={{user}}>{children}</AuthContext.Provider>);
}
export const useAuth = () => useContext(AuthContext);
However, I'm getting the following error in the auth.js file:
I am not able to understand how to fix it.
Also, I want to know if using useContext() hook is better for route protection as opposed to storing user session cookies in the browser and verifying it from there.
Edit:
I have configured Firebase in firebaseConfig.js. The code for it is as follows:
firebaseConfig.js
import { initializeApp } from "firebase/app";
import { getAuth } from "firebase/auth";
const firebaseConfig = {
apiKey: process.env.NEXT_PUBLIC_FIREBASE_API_KEY,
authDomain: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN,
projectId: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID,
storageBucket: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET,
messagingSenderId: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
appId: process.env.NEXT_PUBLIC_FIREBASE_APP_ID,
};
// Initialize Firebase
export const app = initializeApp(firebaseConfig);
export const auth = getAuth(app);
I was just getting the same error, I managed to fix this by doing:
import { initializeApp } from 'firebase/app';
import { getAuth } from "firebase/auth";
import { getFirestore } from "firebase/firestore";
const firebaseConfig{
...
}
And adding these lines like that:
const app = initializeApp(firebaseConfig);
const auth = getAuth(app);
const db = getFirestore();
export { auth, db };
Initialize app like Marcos Oliveira said, with error handling:
try
{
const app = initializeApp(firebaseConfig);
const auth = getAuth(app);
} catch(error) {
console.log('Error:', error)
}
For anyone still dealing with this issue, my solution was to re-order my imports in the App.js.
For some reason, the components I imported needed to be in a specific order. Otherwise, the same error is thrown.
I did solve the problem by:
first I created a firebaseConfig.js file and put my configs and exported auth
import { initializeApp } from "firebase/app";
import { getAuth } from "firebase/auth";
const firebaseConfig = {
apiKey: "AIzaSyAzlY091r0Ihxxxxxx5F8",
authDomain: "mealxxxxxc.firebaseapp.com",
projectId: "mealxxxxxc",
storageBucket: "meaxxxxxpot.com",
messagingSenderId: "10xxxx00",
appId: "1:1092909165400:web:532xxxxx32d",
};
const app = initializeApp(firebaseConfig);
export const auth = getAuth(app);
then in authContext.js, I imported auth from firebaseConfig.js
import React, { useState, createContext } from "react";
import { signInWithEmailAndPassword } from "firebase/auth";
import { auth } from "../firebaseConfig";
export const AuthenticationContext = createContext();
export const AuthenticationContextProvider = ({ children }) => {
const [isLoading, setIsLoading] = useState(false);
const [error, setError] = useState(null);
const [user, setUser] = useState(null);
const onLogin = (email, password) => {
setIsLoading(true);
signInWithEmailAndPassword(auth, email, password)
.then((userData) => {
setUser(userData.user);
setIsLoading(false);
console.log("userData", userData.user);
})
.catch((er) => {
setIsLoading(false);
setError(er.toString());
console.log(er.message.toString());
});
};
So, for me, that error came about when I had all my firebase configurations on separate page/file (Firebase.js) including the following:
// Initialize Firebase
export const app = initializeApp(firebaseConfig);
export const db = getFirestore(app);
export const auth = getAuth(app);
export const storage = getStorage(app);
So, the initial setup for Firebase was okay.
However, I also had a separate page/file (App.js) where I called createUserWithEmailAndPassword(auth, email, password) as well as other built-in Firebase auth methods...
But, I forgot to import app from Firebase.js and that error popped up after I called createUserWithEmailAndPassword.
Once I did imported app, the error went away.
the problem is with the app object which is not getting initialized before the context provider render's
You should import the 'app' from firebaseConfig.js or whatever.js file your firebase configuration is in, into your Context file.
Note: make sure you are exporting the app from the configuration file
import { app } from 'location/to/firebaseConfig.js';
and in useEffect check for the 'app' if it exists then run the firebase-specific functions afterward and also add the 'app' to the dependency array.
useEffect(() => {
if (app) {
//enter firebase-specific code here
// for example:
onAuthStateChanged(auth, (user) => {
});
}
}, [app]);
you just need to export firebase conifgurations as app or any other type and re import it inside the page you are working on.
for me it was like this
`import { getAuth,signInWithEmailAndPassword } from "firebase/auth";
import { useState } from "react";
import { useNavigate } from "react-router-dom";
function SignInPage(){
const auth=getAuth();
const SignIn=()=>{
signInWithEmailAndPassword(auth,email,password)
.then((userCredentials)=>{
const user =userCredentials.user;
console.log(user);
alert("successfully loged a user")
})
.catch((error)=>{
const errorCode=error.code;
const errorMessage=error.message;
alert(errorCode,errorMessage);
});
}
const [email,setEmail]=useState("")
const [password,setPassword]=useState("")
return(
<div className="main">
<input type={"email"} placeholder="Email" onChange=
{(e)=>setEmail(e.target.value)}/>
<input type={"password"} placeholder="Password" onChange=
{(e)=>setPassword(e.target.value)}/>
<button onClick={()=>SignIn(email,password)}>Create Account</button>
</div>
)}
export default SignInPage;`
I am new in vite. I am trying to initialize the firebase app. but I am getting errors like below
Firebase: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp()
I created a file name firebase.ts but i am not really sure where can i include this to initialize firebase globally.
<script setup lang="ts">
import { ref } from 'vue'
import { useRouter } from 'vue-router'
import { useHead } from '#vueuse/head'
import { isDark } from '/#src/state/darkModeState'
import useNotyf from '/#src/composable/useNotyf'
import sleep from '/#src/utils/sleep'
import { getAuth, signInWithEmailAndPassword } from '#firebase/auth'
const isLoading = ref(false)
const router = useRouter()
const notif = useNotyf()
const username = ref('')
const password = ref('')
const handleLogin = async () => {
if (!isLoading.value) {
isLoading.value = true
signInWithEmailAndPassword(getAuth(), username.value, password.value)
.then((user) => {
isLoading.value = false
router.push({ name: 'sidebar-dashboards-course' })
})
.catch((err) => {
isLoading.value = false
notif.error(
'There is no user record corresponding to this identifier. The user may be deleted'
)
})
}
}
Any solution appreciated!
In your firebase.ts, you are initializing Firebase using the compat version (that let's you use the name-spaced syntax even in V9) but you are trying to use the Modular version in your Vue components. Instead, try initializing Firebase using modular SDK as well. So the firebase.ts should look like:
import { initializeApp } from "firebase/app";
import { getAuth } from "firebase/auth";
import { getFirestore } from "firebase/firestore";
import { getStorage } from "firebase/storage";
const firebaseConfig = {...};
const app = initializeApp(firebaseConfig);
const auth = getAuth(app);
const db = getFirestore(app);
const storage = getStorage(app);
export { auth, db, storage };
Then try importing these instances in your components instead of using get[Service]() functions again.
import { auth } from "../path/to/firebase.ts" // update the path as per your dir structure
// usage: instead of getAuth() here
await signInWithEmailAndPassword(auth, username.value, password.value)
I'm learned that React will re-render after state changed e.g. setState from useState(), calling the function or variable from useContext() variable. But now I'm don't understand that why I get the ESLint warning call the context function inside the useCallback() without dependency in the list. If I put the dependency in the list, useCallback() will be re-rendered and useEffect() dependency from useCallback() variable will do again. So how to fix the react-hooks/exhaustive-deps when calling the function inside the useContext() variable?
Auth.js
import React, { createContext, useContext, useEffect, useMemo, useState } from "react";
import * as AuthAPI from "../API/AuthAPI"
import Loading from "../Page/Loading"
const AuthContext = createContext()
export const AuthProvider = ({children}) => {
const [user,setUser] = useState()
const [loadingInitial,setLoadingInitial] = useState(true)
useEffect(()=>{
AuthAPI.getCurrentUser()
.then((user)=>setUser(user))
.catch((error)=>{console.log(error)})
.finally(()=>setLoadingInitial(false))
},[])
const login = async (email,password) => {
const user = await AuthAPI.login({email,password})
setUser(user)
return user
}
const register = async (firstname,lastname,email,password) => {
const user = await AuthAPI.register({firstname,lastname,email,password})
setUser(user)
return user
}
const logout = async () => {
const response = await AuthAPI.logout()
setUser(undefined)
}
const value = useMemo(()=>({
user,
setUser,
login,
register,
logout
}),[user])
return (
<AuthContext.Provider value={value}>
{loadingInitial ? <Loading/> : children}
</AuthContext.Provider>
)
}
export const useAuth = () => {
return useContext(AuthContext)
}
Logout.js
import { useCallback, useEffect, useState } from "react";
import { Navigate, useLocation, useNavigate } from "react-router-dom";
import { useAuth } from "../Hooks/Auth";
import * as AuthAPI from "../API/AuthAPI"
import Loading from "./Loading";
function Logout() {
const auth = useAuth()
const location = useLocation()
const navigate = useNavigate()
const [isLoggedOut,setIsLoggedOut] = useState(false)
const logout = useCallback(async () => {
console.log("Logging out!")
await AuthAPI.logout()
auth.setUser((prevState)=>(undefined))
setIsLoggedOut(true)
},[auth]) // --> re-rendered bacause `auth` context in re-rendered when set `user` state.
useEffect(()=>{
logout()
},[logout]) // --> this also to run again from `logout` callback is being re-rendered.
if (!isLoggedOut) {
return <Loading/>
}
return (
<Navigate to="/login" replace/>
)
}
export default Logout
Any help is appreciated.
How about destructuring your auth context, since you are only using setUser inside useEffect?
const { setUser } = useAuth()
useEffect(() => {
....
}, [setUser])
There is no need for creating a memoized logout callback function if logout isn't used/passed as a callback function. Just apply the logging out logic in the useEffect hook.
Render the Loading component and issue the imperative redirect from the resolved Promise chain of the return AuthAPI.logout Promise.
Example:
import { useEffect } from "react";
import { useNavigate } from "react-router-dom";
import { useAuth } from "../Hooks/Auth";
import * as AuthAPI from "../API/AuthAPI"
import Loading from "./Loading";
function Logout() {
const auth = useAuth();
const navigate = useNavigate();
useEffect(() => {
console.log("Logging out!");
AuthAPI.logout()
.then(() => auth.setUser(undefined))
.finally(() => navigate("/login", { replace: true }));
}, []);
return <Loading />;
}
export default Logout;
Can you try to replace your useEffect code into this:
useEffect(logout, [])
I have a AuthProvider and useAuth method that returns useContext(AuthContext) inside my App.js root file, however, if I console.log the return value of useAuth() in App.js, it is undefined, why??
In any other child component like Loginpage, there is an authContext displayed..
my App.js:
import { AuthProvider, useAuth } from './providers/AuthProvider'
function App() {
const auth = useAuth()
console.log({ auth }) //undefined??
AuthProvider.js:
import React, { useContext, useState, useEffect } from 'react'
import { app, auth, firestore, storage } from '../firebase'
const AuthContext = React.createContext()
export function useAuth() {
return useContext(AuthContext)
}
export function AuthProvider({ children }) {
const [currentUser, setCurrentUser] = useState(undefined)
const [loginError, setLoginError] = useState(null)
const login = async (email, password) => {
try {
return auth.signInWithEmailAndPassword(email, password)
} catch (error) {
setLoginError(error)
}
}
const logout = () => auth.signOut()
useEffect(() => {
const unsubscribe = auth.onAuthStateChanged(user => {
setCurrentUser(user)
})
return unsubscribe
}, [])
const value = {
loginError,
login,
signup,
logout,
currentUser,
app,
firestore,
storage,
auth,
}
return <AuthContext.Provider value={value}>{children}</AuthContext.Provider>
}
Since you import AuthProvider in same file of App it gives a clue that you didn't use the Context API correctly.
Context values are available for Context-Consumers.
Context-Consumers are children of Context-Provider, therefore your App component have to be a child of <AuthContext.Provider>:
<AuthProvider>
<App />
</AuthProvider>