How Do I Grab Credential Values For Re Authentication? (Question Updated)

I am trying to allow users to change their email or password. I did some research on how re authentication work, most of the questions I had were answered however when creating the credential how do I grab the users email / password in the .credentialWithEmail(email, password: password) section? I'm not sure what to enter in those fields.

When I take a look at the quick help tab, it explains the Parameters:

email The user's email address. password The user's password.

Here is the code

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

  func updateEmail() {



        guard let updatedEmail = self.updatedEmail else { return }

        let user = Auth.auth().currentUser
        guard let currentUid = Auth.auth().currentUser?.uid else { return }
        // re authenticate the user
        user?.reauthenticate(with: credential, completion: { (result, error) in
            if let error = error {
                // An error happened.
                print(error._code)
                self.handleError(error)
            } else {
                guard self.emailChanged == true else { return }

                user?.updateEmail(to: self.emailTextField.text!, completion: { (error) in
                                        if let error = error {
                                            self.handleError(error)
                                        } else {
                                            print("Email Change Success")
                                            USER_REF.child(currentUid).child("email").setValue(updatedEmail) { (err, ref) in

                                                 self.dismiss(animated: true, completion: nil)

            }
        }

    }

        )}



    }
    )}

If you are asking why you can't get the email or password after you set FIREmailPasswordAuthProvider, it is because it is set only. There is no function to retrieve email/password after you set FIREmailPasswordAuthProvider. Firebase does not have a way to retrieve set passwords from their Auth class. The user email can be retrieved with let userEmail = Auth.auth().currentUser?.email

You may need to redesign you code to allow the app to save passwords locally using NSUserDefaults or simply make the user reenter them.