I am using Firebase to log in users into my app, but when I am adding the capability to manage their account like changing their email, password and so on. The documentation says that if the user have not recently signed in they need to re-authenticate, but my question is: How can I check if the user have signed in recently or not? According to the docs the error will return FIRAuthErrorCodeCredentialTooOld
, but how can I check this?
Update for current Swift 5
let user = Auth.auth().currentUser
user?.delete { error in
if let error = error {
let authErr = AuthErrorCode(rawValue: error.code)
if authErr == .requiresRecentLogin {
// reauthenticate
}
// other error
} else {
// delete success
}
}
Swift 3
I had to do this yesterday when trying to delete a user. One thing to note is FIRAuthErrorCodeCredentialTooOld
is now FIRAuthErrorCode.errorCodeRequiresRecentLogin
What I did was trigger a UIView
to ask for log in details if that error is thrown. Since I was using email and password, that's what I collected from the user in my example.
private func deleteUser() {
//get the current user
guard let currentUser = FIRAuth.auth()?.currentUser else { return }
currentUser.delete { (error) in
if error == nil {
//currentUser is deleted
} else {
//this gets the error code
guard let errorCode = FIRAuthErrorCode(rawValue: error!._code) else { return }
if errorCode == FIRAuthErrorCode.errorCodeRequiresRecentLogin {
//create UIView to get user login information
let loginView = [yourLoginUIViewController]
self.present(loginView, animated: true, completion: nil)
}
}
}
Once I had the login information I ran this function to reauthenticate the user. In my case I ran it the loginView
in the above code if the login in was successful:
func reauthenticateUserWith(email: String, password: String) {
FIRAuth.auth()?.signIn(withEmail: email, password: password) { (user, error) in
if error == nil {
//display UIView to delete user again
let deleteUserView = deleteUserView()
present(deleteUserView, animated: true, completion: nil)
} else {
//handle error
print(error!.localizedDescription)
}
}
}
The deleteUserView
in my case calls deleteUser()
on a button tap from the user. You can also use UIAlertController
in place of the custom UIView
s, but that's up to you.
Hope this helps.
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