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// Copyright 2017 Google
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import UIKit
import FirebaseAuth
class AuthViewController: UIViewController {
// MARK: - User Interface
/// A stackview containing all of the buttons to providers (Email, OAuth, etc).
@IBOutlet var providers: UIStackView!
/// A stackview containing a signed in label and sign out button.
@IBOutlet var signedIn: UIStackView!
/// A label to display the status for the signed in user.
@IBOutlet var signInStatus: UILabel!
// MARK: - User Actions
@IBAction func signOutButtonHit(_ sender: UIButton) {
// Sign out via Auth and update the UI.
try? Auth.auth().signOut()
setUserSignedIn(nil)
}
// MARK: - View Controller Lifecycle
override func viewDidLoad() {
super.viewDidLoad()
// Update the UI based on the current user (if there is one).
setUserSignedIn(Auth.auth().currentUser)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let destination = segue.destination
if let emailVC = destination as? EmailLoginViewController {
emailVC.delegate = self
}
}
// MARK: - Internal Helpers
private func setUserSignedIn(_ user: User?) {
if let user = user {
providers.isHidden = true
signedIn.isHidden = false
signInStatus.text = "User is signed in via \(user.providerID) and the UID \(user.uid)"
} else {
// User is signed out, hide the signed in state and show the providers.
providers.isHidden = false
signedIn.isHidden = true
}
}
}
// MARK: - EmailLoginDelegate conformance.
extension AuthViewController: EmailLoginDelegate {
func emailLogin(_ controller: EmailLoginViewController, signedInAs user: User) {
setUserSignedIn(user)
dismiss(animated: true)
}
func emailLogin(_ controller: EmailLoginViewController, failedWithError error: Error) {
print("Fail..... \(error)")
DispatchQueue.main.async {
controller.presentError(with: "There was an issue logging in. Please try again.")
}
}
}
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