CODEWITHSUNDEEP
iosfirebasefirebase-authentication
James
James

Reputation: 1302

Firebase unlink email/password auth from user on iOS

I'm trying to unlink email/password authentication from a user in Swift on iOS. I've read the documentation and managed to link and unlink Facebook authentication without a problem. However, after linking email/password credentials successfully, the providerData object is nil. The providerID is "Firebase" but when I pass that to the unlink code the following error is thrown:

Error Domain=FIRAuthErrorDomain Code=17016 "User was not linked to an account with the given provider." UserInfo={NSLocalizedDescription=User was not linked to an account with the given provider., error_name=ERROR_NO_SUCH_PROVIDER}

The unlink code I'm using is:

let providerId = (FIRAuth.auth()?.currentUser?.providerID)!
print("Trying to unlink:",providerId)     // providerId = "Firebase"
FIRAuth.auth()?.currentUser?.unlinkFromProvider(providerId) { user, error in
    if let error = error {
        print("Unlink error:", error)
    } else {
        // Provider unlinked from account successfully
       print("Unlinked...user.uid:", user!.uid, "Anonymous?:", user!.anonymous)
        }
    }

Reading the docs and having got it working for Facebook, I expected the providerData array to be populated with something after email authentication. So is my linking code wrong (it doesn't throw an error and appears to work fine)?

My linking code:

let credential = FIREmailPasswordAuthProvider.credentialWithEmail(email, password: password)

FIRAuth.auth()?.currentUser!.linkWithCredential(credential) { (user, error) in
    if user != nil && error == nil {
        // Success
        self.success?(user: user!)
        dispatch_async(dispatch_get_main_queue(), {
            self.dismissViewControllerAnimated(true, completion: nil)
            if type == "new" {
                print("New user logged in...")
            }
            if type == "existing" {
                print("Existing user logged in...")
            }
        })
    } else {
        print("Login error:",error)
        self.showOKAlertWithTitle("Login Error", message: error!.localizedDescription)
    }
}

Any pointers of how I can modify my approach would be great.

Upvotes: 3

Views: 1635

Answers (1)

Arel Guatno
Arel Guatno

Reputation: 870

To get the profile information retrieved from the sign-in providers linked to a user, use the providerData property.

if let user = FIRAuth.auth()?.currentUser {
  for profile in user.providerData {
    // Id of the provider (ex: facebook.com)
    let providerID = profile.providerID
  }
} else {
  // No user is signed in.
}

Calling FIRAuth.auth()?.currentUser?.providerID will result to "firebase".

Upvotes: 1

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