We Keep Coding

How to send messages after one hour using React and Firebase

I'm building a chat app with React and Firebase and I'm using functional React components. Please I would like to find out if there is a way to send a user an email if a message has not been read after one hour. I'm using triggerEmail to send emails when a property is created like this:
const formik = useFormik({
... //some other code here
onSubmit: async (values) => {
... //some other code here
await addDoc(collection(db, "mail"), {
to: values.email,
template: {
name: 'Property Uploaded',
data: {
id: values.id
}
}
})
}
})
This code runs when a property is created and an email is sent to the user as well as the admin. There's also a chat feature where users can send messages to the admin and this is wrapped in a custom react hook.
export default function useSendMessage() {
const [error, setError] = useState(null)
const { user } = useAuthContext()
const sendMessage = async (admin, agent, message) => {
setError(null)
try {
await addDoc(collection(db, "messages", admin.id, "messages"), {
admin: admin,
agent: agent,
isSender: admin.id === user.uid,
message: message.trim(),
markRead: false,
created_at: moment().format()
})
await addDoc(collection(db, "messages", agent.id, "messages"), {
admin: admin,
agent: agent,
isSender: agent.id === user.uid,
message: message.trim(),
markRead: false,
created_at: moment().format()
})
} catch (error) {
setError(error.message)
}
}
return { error, sendMessage }
}
And I'm using this hook in the chat app like this:
import useSendMessage from "../../hooks/useSendMessage";
export default function UserMessageInput({ admin, agent }) {
...//some code here
const handleSubmit = async (e) => {
e.preventDefault()
setSending(true)
setMessage("")
await sendMessage(admin, agent, message)
.then(() => {
setSending(false)
})
}
return(
...//chat app UI
)
}
Is there a way to trigger the email service if markRead is false after one hour? I would like to notify the admin or the agent that they have a new message on the site. I'm not sure setTimeout or setInterval can work because the agent or the admin might be offline at certain times.

You can schedule a Cloud Function to run in exactly one hour after the message doc has been created, as explained in this article titled "How to schedule a Cloud Function to run in the future with Cloud Tasks (to build a Firestore document TTL)".
Concretely, in the HTTP callback function that is invoked by Cloud Tasks you will first check the value of the markRead boolean field in the Firestore document and, if it is false, you'll send the email by creating a doc in the mail collection, since you use the Email extension.
Another approach would be to use a scheduled Cloud Function to run e.g. every minute, checking is the message was create more than one hour ago and is not marked as read. The above referred article explains the drawbacks of this approach.

How to verify that the email is authentic in Firebase?

I need to add to my current code, the necessary functionality and the exact code so that the user must verify the email before logging in.
Now, the user registers and automatically accesses all the functions of the application and its user panel. I want to add the necessary function so that when a user registers, a message is shown telling him that: You must verify your email In this way we ensure that it is a valid email and avoid the registration of SPA users.
I need the user to verify her email to be able to log in, until she does, she can continue using the App as she did, without logging in.
You can see that I did several tests, and other users tried to help me, but we have not achieved what is necessary, since I need to add the functionality to the code that I have now, since it is the only way I know to continue building my application.
The app has registration with Firebase, registered by email and password and I'm using Formik to control the state of the form and Yup to validate.
I have read Firebase documentation about "Send a verification message to a user",
This is the Firebase function:
```
const auth = getAuth();
sendEmailVerification(auth.currentUser)
.then(() => {
// Email verification sent!
// ...
})
```
The registration system I use now is Mail and Password. The user enters an email, a password, verifies the password and is automatically registered in the application.
I did several tests trying to add sendEmailVerification to my registration system, and for now what I have achieved is that the confirmation email arrives to the user (SPA folder) but the confirmation email arrives after the user already registered and use the app.
It would be necessary that the user could not register until receiving and confirming the "Confirmation Email"
I need a code example that fits my current app, I don't have the knowledge to change all my code, this is the base of my app.
What do I have to do so that this works correctly and the verification email arrives before the user can register?
What am I doing wrong in my code?
I show the application on GitHub, so they can see all the files
You can test the project as it is built with Expo:
exp://exp.host/#miguelitolaparra/restaurantes-5-estrellas?release-channel=default
This is the method I'm using to register users:
const formik = useFormik({
initialValues: initialValues(),
validationSchema: validationSchema(), // validate the form data
validateOnChange: false,
onSubmit: async(formValue) => {
try { // send the data to Firebase
const auth = getAuth()
// sendEmailVerification(auth.currentUser)
await createUserWithEmailAndPassword(
auth,
formValue.email,
formValue.password
)
sendEmailVerification(auth.currentUser)
navigation.navigate(screen.account.account)
} catch (error) {
// We use Toast to display errors to the user
Toast.show({
type: "error",
position: "bottom",
text1: "Failed to register, please try again later",
})
}
},
})
And I also show you the complete file:
import { useFormik } from 'formik'
import { getAuth, createUserWithEmailAndPassword, sendEmailVerification } from 'firebase/auth'
export function RegisterForm() {
const [showPassword, setShowPassword] = useState(false)
const [showRepeatPassword, setShowRepeatPassword] = useState(false)
const navigation = useNavigation()
const formik = useFormik({
initialValues: initialValues(),
validationSchema: validationSchema(), // validate the form data
validateOnChange: false,
onSubmit: async (formValue) => {
try { // send the data to Firebase
const auth = getAuth()
//sendEmailVerification(auth.currentUser)
await createUserWithEmailAndPassword(
auth,
formValue.email,
formValue.password
)
sendEmailVerification(auth.currentUser)
navigation.navigate(screen.account.account)
} catch (error) {
// We use Toast to display errors to the user
Toast.show({
type: "error",
position: "bottom",
text1: "Error al registrarse, intentelo mas tarde",
})
}
},
})
// function to hide or show the password
const showHidenPassword = () => setShowPassword((prevState) => !prevState)
const showHidenRepeatPassword = () => setShowRepeatPassword((prevState) => !prevState)
return (
// Registration form interface
<View>
<Input
placeholder="Correo electronico"
keyboardType="email-address"
containerStyle={AuthStyles.input}
rightIcon={
<Icon type="material-community" name="at" iconStyle={AuthStyles.icon} />
}
onChangeText={(text) => formik.setFieldValue("email", text)}
errorMessage={formik.errors.email}
/>
<Input
placeholder="Contraseña"
containerStyle={AuthStyles.input}
secureTextEntry={showPassword ? false : true}
rightIcon={
<Icon
type="material-community"
name={showPassword ? "eye-off-outline" : "eye-outline"}
iconStyle={AuthStyles.icon}
onPress={showHidenPassword}
/>
}
onChangeText={(text) => formik.setFieldValue("password", text)}
errorMessage={formik.errors.password}
/>
<Input
placeholder="Repetir contraseña"
containerStyle={AuthStyles.input}
secureTextEntry={showRepeatPassword ? false : true}
rightIcon={
<Icon
type="material-community"
name={showRepeatPassword ? "eye-off-outline" : "eye-outline"}
iconStyle={AuthStyles.icon}
onPress={showHidenRepeatPassword}
/>
}
onChangeText={(text) => formik.setFieldValue("repeatPassword", text)}
errorMessage={formik.errors.repeatPassword}
/>
<Button
title="REGISTRATE"
containerStyle={AuthStyles.btnContainer}
buttonStyle={AuthStyles.btn}
onPress={formik.handleSubmit} // send the form
loading={formik.isSubmitting}// show loading while doing user registration
/>
</View>
)
}
And this is the file to validate the form with Yup RegistreFormValidar.js
import * as Yup from "yup"
// object that has the elements of the form
export function initialValues() {
return {
email: "",
password: "",
repeatPassword: "",
}
}
// validate the form data whit Yup
export function validationSchema() {
return Yup.object({
email: Yup.string()
.email("El email no es correcto")
.required("El email es obligatorio"),
password: Yup.string().required("La contraseña es obligatoria"),
repeatPassword: Yup.string() // validate that the passwords are the same
.required("La contraseña es obligatoria")
.oneOf([Yup.ref("password")], "Las contraseñas tienen que ser iguales"),
})
}

You have several options to achieve your purpose.
First, to fix the SPA issue, you can use a custom domain, as shown on Firebase
To get what you are looking for, you can follow these steps:
1 - The user registers with an email address.
2 - The new record is created, but with status "To be verified" and an activation string is assigned.
3 - You send user data and activation string, along with a link to verify registration.
4 - The user clicks on the link, enters their data and, if they are valid, you change the status to "Active".
You can try to do it.
You also have the option to do it with "Authenticate with Firebase via email link"
For users to sign in via an email link, you must first enable the Email Provider and Email Link sign-in method for your Firebase project.
-Then send an authentication link to the user's email address.
To start the authentication process, show the user an interface that prompts them to enter their email address, then call sendSignInLinkToEmail to ask Firebase to send the authentication link to the user's email.
You can see all the details in the official Firebase documentation
1 - Build the ActionCodeSettings object, which provides Firebase with instructions to build the email link
const actionCodeSettings = {
// URL you want to redirect back to. The domain (www.example.com) for this
// URL must be in the authorized domains list in the Firebase Console.
url: 'https://www.example.com/finishSignUp?cartId=1234',
// This must be true.
handleCodeInApp: true,
iOS: {
bundleId: 'com.example.ios'
},
android: {
packageName: 'com.example.android',
installApp: true,
minimumVersion: '12'
},
dynamicLinkDomain: 'example.page.link'
};
2 - Ask the user for the email.
3 - Send the authentication link to the user's email and save their email in case the user completes the login with email on the same device
import { getAuth, sendSignInLinkToEmail } from "firebase/auth";
const auth = getAuth();
sendSignInLinkToEmail(auth, email, actionCodeSettings)
.then(() => {
// The link was successfully sent. Inform the user.
// Save the email locally so you don't need to ask the user for it again
// if they open the link on the same device.
window.localStorage.setItem('emailForSignIn', email);
// ...
})
.catch((error) => {
const errorCode = error.code;
const errorMessage = error.message;
// ...
});
Finally complete the access with the email link.
This is not exactly what you are looking for, but it may help.

Put this listener in your route You can tweak it according to your usage
useEffect(() => {
const unsubscribe = auth().onAuthStateChanged(
async (user) => {
if (user) {
if (user.emailVerified) {
store.setUser(user);
} else {
await user.sendEmailVerification();
auth()
.signOut()
.then(() => {
store.resetStore();
store.setAlertModal('Please Verify Your Email');
})
.catch((error) => log.error('Signout Error', error));
}
}
}
);
return () => {
// Unsubscribe
unsubscribe();
};
}, [store]);

As far as I understood, you need to verify email address of the user first, then create the user. Blocking functions maybe what you need.
exports.beforeCreate = functions.auth.user().beforeCreate((user, context) => {
const locale = context.locale;
if (user.email && !user.emailVerified) {
// Send custom email verification on sign-up.
return admin.auth().generateEmailVerificationLink(user.email).then((link) => {
return sendCustomVerificationEmail(user.email, link, locale);
});
}
});
This Firebase function will trigger before a new user is saved to the Firebase Authentication database, and before a token is returned to your client app. However, I think after this function executes, user is created. To prevent user creation you may have to implement a more complex flow.
One naive approach I can think of is as follows: After sending email to user, do not terminate the function and inside the function periodically check if user's email address is verified. Also set a timeout option and reject user creation after timeout. As expected, this approach increases the function execution time and can be costly.
If you are fine with the user being created in the Firebase Authentication database, I suggest implementing the solution stated in the documentation.
exports.beforeCreate = functions.auth.user().beforeCreate((user, context) => {
const locale = context.locale;
if (user.email && !user.emailVerified) {
// Send custom email verification on sign-up.
return admin.auth().generateEmailVerificationLink(user.email).then((link) => {
return sendCustomVerificationEmail(user.email, link, locale);
});
}
});
exports.beforeSignIn = functions.auth.user().beforeSignIn((user, context) => {
if (user.email && !user.emailVerified) {
throw new functions.auth.HttpsError(
'invalid-argument', `"${user.email}" needs to be verified before access is granted.`);
}
});
This will block users with unverified emails from logging into your app.
Check this documentation for other possible options: https://firebase.google.com/docs/auth/extend-with-blocking-functions#requiring_email_verification_on_registration

Firebase: Re-authenticate the current user inside a Cloud Function

I am implementing a cloud function for updating the current user's password.
Basically, the logic I want to follow is:
(Client side)
0. Complete form and submit the data (current password and new password).
(Backend)
1. Get the current user email from the callable function context.
2. Re-authenticate the current user using the provided current password.
2.1. If success, change the password and send a notification email.
2.2. Else, throw an error.
Here is my current code:
const { auth, functions } = require("../../services/firebase");
...
exports.updatePassword = functions
.region("us-central1")
.runWith({ memory: "1GB", timeoutSeconds: 120 })
.https.onCall(async (data, context) => {
const { currentPassowrd, newPassword } = data;
const { email, uid: userId } = context.auth.token;
if (!userId) {
// throw ...
}
try {
//
// Problem: `firebase-admin` authentication doesn't include
// the `signInWithEmailAndPassword()` method...
//
await auth.signInWithEmailAndPassword(email, currentPassowrd);
await auth.updateUser(userId, {
password: newPassword,
});
sendPasswordUpdateEmail(email);
} catch (err) {
// ...
throw AuthErrors.cannotUpdatePassword();
}
});
My problem is that the firebase-admin package doesn't include the signInWithEmailAndPassword, and I need a way to handle this, to check that "currentPassword" is correct, inside my function.
My other option, if the one I have described is not possible, is to update the password using the firebase sdk in the client side, and then to call a firebase function to send the notification email.

Strictly speaking you don't need to re-authenticate the user in the Cloud Function: If you get a value for context.auth.uid in your Callable Cloud Function, it means that the user is authenticated in the front-end and you can therefore safely call the updateUser() method.
If you want to deal with the case when the user left his device opened, and someone updates his password, as explained in the comments under your question, I would suggest you use the reauthenticateWithCredential() method in the front-end, which re-authenticates a user using a fresh credential.
Do as follows:
import {
EmailAuthProvider,
getAuth,
reauthenticateWithCredential,
} from 'firebase/auth'
const email = auth.currentUser.email;
// Capture the password value
// e.g. via a pop-up window
const password = ...;
const auth = getAuth();
const credential = EmailAuthProvider.credential(
email,
password
);
await reauthenticateWithCredential(
auth.currentUser,
credential
);
// If no error is thrown, you can call the Callable Cloud Function, knowing the user has just re-signed-in.

Check Firestore Database boolean return value

I am working for a task related to react native app based user management. After they successful sign up themselves as a user, I include a data which is store Boolean value and I have named it as emailVerifiedAccount (this is the stored data if they registered themselves successful and indicate if they are a verified user if they click on email verification link send to them). In login screen I would like to check the Boolean value that I get from firestore in onAuthStateChanged and only direct them to index screen when the emailVerifiedAccount that I get is return true. Code below is authstatechanged for login screen .
const onAuthStateChanged = (user) => {
if (user) {
checkEmailVerifiedAccount=firestoreService.isEmailVerifiedAccount(user);
try {
if(checkEmailVerifiedAccount===true){
navigation.navigate('Index');
}else{
Alert.alert(
"Verify as a Playbookx user",
"Please click on email verification link send to your email. If you do not receive any email ,please contact user support",
"You may come back to login again after you verified your email",
[
{ text: "OK"}
]
)
}
} catch (error) {
console.log(error);
}
}
};
and in firestore.js is where all the code and function that is related with Firestore database. isEmailVerifiedAccount is one of the class object which checking verified user using email.
isEmailVerifiedAccount = async (user) => {
return await firestore()
.collection('users')
.doc(user)
.get()
.then(snapshot => {
if (snapshot.exists){
const user=snapshot.data();
const emailVerifiedAccount={
emailVerifiedAccount:user.emailVerifiedAccount
};
return emailVerifiedAccount
}
})
.catch(error => {
console.log(error);
});
};
And the problem that I facing right now is that, it lead me to index screen when the emailVerifiedAccount in Firestore is false. Picture below is the structure for Firestore.

Your isEmailVerifiedAccount function is asynchronous, so when calling it you have to await the result:
checkEmailVerifiedAccount = await firestoreService.isEmailVerifiedAccount(user);

const checkEmailVerifiedAccount = firestoreService.isEmailVerifiedAccount(user);
checkEmailVerifiedAcccount seems to be an object but you are checking if it's equal to true. Either return user.emailVerifiedAccount directly from isEmailVerifiedAccount function or read that property like this:
const checkEmailVerifiedAccount = firestoreService.isEmailVerifiedAccount(user);
if(checkEmailVerifiedAccount.emailVerifiedAccount) {
navigation.navigate('Index');
}

How to change email in firebase auth?

I am trying to change/update a user's email address using :
firebase.auth().changeEmail({oldEmail, newEmail, password}, cb)
But I am getting ...changeEmail is not a function error. I found the reference here from the old firebase docu.
So how to I do it in the 3.x version? Because I cant find a reference in the new documentation.

You're looking for the updateEmail() method on the firebase.User object: https://firebase.google.com/docs/reference/js/firebase.User#updateEmail
Since this is on the user object, your user will already have to be signed in. Hence it only requires the password.
Simple usage:
firebase.auth()
.signInWithEmailAndPassword('you#domain.example', 'correcthorsebatterystaple')
.then(function(userCredential) {
userCredential.user.updateEmail('newyou#domain.example')
})

If someone is looking for updating a user's email via Firebase Admin, it's documented over here and can be performed with:
admin.auth().updateUser(uid, {
email: "modifiedUser#example.com"
});

FOR FIREBASE V9 (modular) USERS:
The accepted answer will not apply to you. Instead, you can do this, i.e., import { updateEmail } and use it like any other import. The following code was copy/pasted directly from the fb docs at https://firebase.google.com/docs/auth/web/manage-users
Happy coding!
import { getAuth, updateEmail } from "firebase/auth";
const auth = getAuth();
updateEmail(auth.currentUser, "user#example.com").then(() => {
// Email updated!
// ...
}).catch((error) => {
// An error occurred
// ...
});

You can do this directly with AngularFire2, you just need to add "currentUser" to your path.
this.af.auth.currentUser.updateEmail(email)
.then(() => {
...
});
You will also need to reauthenticate the login prior to calling this as Firebase requires a fresh authentication to perform certain account functions such as deleting the account, changing the email or the password.
For the project I just implemented this on, I just included the login as part of the change password/email forms and then called "signInWithEmailAndPassword" just prior to the "updateEmail" call.
To update the password just do the following:
this.af.auth.currentUser.updatePassword(password)
.then(() => {
...
});

updateEmail needs to happen right after sign in due to email being a security sensitive info
Example for Kotlin
// need to sign user in immediately before updating the email
auth.signInWithEmailAndPassword("currentEmail","currentPassword")
.addOnCompleteListener(this) { task ->
if (task.isSuccessful) {
// Sign in success now update email
auth.currentUser!!.updateEmail(newEmail)
.addOnCompleteListener{ task ->
if (task.isSuccessful) {
// email update completed
}else{
// email update failed
}
}
} else {
// sign in failed
}
}

async updateEmail() {
const auth = firebase.auth();
try {
const usercred = await auth.currentUser.updateEmail(this.email.value);
console.log('Email updated!!')
} catch(err) {
console.log(err)
}
}
You can use this to update email with Firebase.

Firebase v9:
const changeEmail = (userInput) => {
const { newEmail, pass } = userInput
signInWithEmailAndPassword(auth, oldEmail, pass)
.then(cred => updateEmail(cred.user, newEmail))
}