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MainViewController.swift
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MainViewController.swift
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//
// Copyright (c) 2016 Google Inc.
//
// 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 GameKit
// [START usermanagement_view_import]
import Firebase
// [END usermanagement_view_import]
import GoogleSignIn
import FBSDKCoreKit
import FBSDKLoginKit
@objc(MainViewController)
// [START signin_controller]
class MainViewController: UITableViewController {
// [END signin_controller]
let kSectionToken = 3
let kSectionProviders = 2
let kSectionUser = 1
let kSectionSignIn = 0
enum AuthProvider {
case authEmail
case authAnonymous
case authFacebook
case authGoogle
case authTwitter
case authGitHub
case authPhone
case authCustom
case authPasswordless
case authGameCenter
case authMicrosoft
}
/*! @var kOKButtonText
@brief The text of the "OK" button for the Sign In result dialogs.
*/
let kOKButtonText = "OK"
/*! @var kTokenRefreshedAlertTitle
@brief The title of the "Token Refreshed" alert.
*/
let kTokenRefreshedAlertTitle = "Token"
/*! @var kTokenRefreshErrorAlertTitle
@brief The title of the "Token Refresh error" alert.
*/
let kTokenRefreshErrorAlertTitle = "Get Token Error"
/** @var kSetDisplayNameTitle
@brief The title of the "Set Display Name" error dialog.
*/
let kSetDisplayNameTitle = "Set Display Name"
/** @var kUnlinkTitle
@brief The text of the "Unlink from Provider" error Dialog.
*/
let kUnlinkTitle = "Unlink from Provider"
/** @var kChangeEmailText
@brief The title of the "Change Email" button.
*/
let kChangeEmailText = "Change Email"
/** @var kChangePasswordText
@brief The title of the "Change Password" button.
*/
let kChangePasswordText = "Change Password"
/** @var kUpdatePhoneNumberText
@brief The title of the "Update Phone Number" button.
*/
let kUpdatePhoneNumberText = "Update Phone Number"
/** @var handle
@brief The handler for the auth state listener, to allow cancelling later.
*/
var handle: AuthStateDidChangeListenerHandle?
/** @var microsoftProvider
@brief The OAuth provider instance for Microsoft.
*/
var microsoftProvider : OAuthProvider?
/** @var twitterProvider
@brief The OAuth provider instance for Twitter.
*/
var twitterProvider : OAuthProvider?
/** @var gitHubProvider
@brief The OAuth provider instance for GitHub.
*/
var gitHubProvider : OAuthProvider?
func showAuthPicker(_ providers: [AuthProvider]) {
let picker = UIAlertController(title: "Select Provider",
message: nil,
preferredStyle: .alert)
for provider in providers {
var action: UIAlertAction
switch provider {
case .authEmail:
action = UIAlertAction(title: "Email", style: .default) { (UIAlertAction) in
self.performSegue(withIdentifier: "email", sender:nil)
}
case .authPasswordless:
action = UIAlertAction(title: "Passwordless", style: .default) { (UIAlertAction) in
self.performSegue(withIdentifier: "passwordless", sender:nil)
}
case .authCustom:
action = UIAlertAction(title: "Custom", style: .default) { (UIAlertAction) in
self.performSegue(withIdentifier: "customToken", sender: nil)
}
case .authAnonymous:
action = UIAlertAction(title: "Anonymous", style: .default) { (UIAlertAction) in
self.showSpinner {
// [START firebase_auth_anonymous]
Auth.auth().signInAnonymously() { (authResult, error) in
// [START_EXCLUDE]
self.hideSpinner {
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
}
// [END_EXCLUDE]
}
// [END firebase_auth_anonymous]
}
}
case .authFacebook:
action = UIAlertAction(title: "Facebook", style: .default) { (UIAlertAction) in
let loginManager = LoginManager()
loginManager.logIn(permissions: ["email"], from: self, handler: { (result, error) in
if let error = error {
self.showMessagePrompt(error.localizedDescription)
} else if result!.isCancelled {
print("FBLogin cancelled")
} else {
// [START headless_facebook_auth]
let credential = FacebookAuthProvider.credential(withAccessToken: AccessToken.current!.tokenString)
// [END headless_facebook_auth]
self.firebaseLogin(credential)
}
})
}
case .authGoogle:
action = UIAlertAction(title: "Google", style: .default) { (UIAlertAction) in
// [START setup_gid_uidelegate]
GIDSignIn.sharedInstance()?.presentingViewController = self
GIDSignIn.sharedInstance().signIn()
// [END setup_gid_uidelegate]
}
case .authTwitter:
action = UIAlertAction(title: "Twitter", style: .default) { (UIAlertAction) in
// [START firebase_auth_twitter]
self.twitterProvider?.getCredentialWith(_: nil){ (credential, error) in
self.showSpinner {
if let error = error {
self.hideSpinner {
self.showMessagePrompt(error.localizedDescription)
return
}
}
if let credential = credential {
Auth.auth().signIn(with: credential) { (result, error) in
self.hideSpinner {
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
}
}
}
}
}
// [END firebase_auth_twitter]
}
case .authGitHub:
action = UIAlertAction(title: "GitHub", style: .default) { (UIAlertAction) in
// [START firebase_auth_github]
self.gitHubProvider?.getCredentialWith(_: nil){ (credential, error) in
self.showSpinner {
if let error = error {
self.hideSpinner {
self.showMessagePrompt(error.localizedDescription)
return
}
}
if let credential = credential {
Auth.auth().signIn(with: credential) { (result, error) in
self.hideSpinner {
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
}
}
}
}
}
// [END firebase_auth_github]
}
case .authPhone:
action = UIAlertAction(title: "Phone", style: .default) { (UIAlertAction) in
self.showTextInputPrompt(withMessage: "Phone Number:") { (userPressedOK, userInput) in
if let phoneNumber = userInput {
self.showSpinner {
// [START phone_auth]
PhoneAuthProvider.provider().verifyPhoneNumber(phoneNumber, uiDelegate: nil) { (verificationID, error) in
// [START_EXCLUDE silent]
self.hideSpinner {
// [END_EXCLUDE]
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
// Sign in using the verificationID and the code sent to the user
// [START_EXCLUDE]
guard let verificationID = verificationID else { return }
self.showTextInputPrompt(withMessage: "Verification Code:") { (userPressedOK, verificationCode) in
if let verificationCode = verificationCode {
// [START get_phone_cred]
let credential = PhoneAuthProvider.provider().credential(
withVerificationID: verificationID,
verificationCode: verificationCode)
// [END get_phone_cred]
self.firebaseLogin(credential)
} else {
self.showMessagePrompt("verification code can't be empty")
}
}
}
// [END_EXCLUDE]
}
// [END phone_auth]
}
} else {
self.showMessagePrompt("phone number can't be empty")
}
}
}
case .authGameCenter:
action = UIAlertAction(title: "Game Center", style: .default) { (UIAlertAction) in
// [START firebase_auth_gamecenter]
GameCenterAuthProvider.getCredential() { (credential, error) in
self.showSpinner {
if let error = error {
self.hideSpinner {
self.showMessagePrompt(error.localizedDescription)
return
}
}
if let credential = credential {
Auth.auth().signIn(with: credential) { (result, error) in
self.hideSpinner {
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
}
}
}
}
}
// [END firebase_auth_gamecenter]
}
case .authMicrosoft:
action = UIAlertAction(title: "Microsoft", style: .default) { (UIAlertAction) in
// [START firebase_auth_microsoft]
self.microsoftProvider?.getCredentialWith(_: nil){ (credential, error) in
self.showSpinner {
if let error = error {
self.hideSpinner {
self.showMessagePrompt(error.localizedDescription)
return
}
}
if let credential = credential {
Auth.auth().signIn(with: credential) { (result, error) in
self.hideSpinner {
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
}
}
}
}
}
// [END firebase_auth_microsoft]
}
}
picker.addAction(action)
}
picker.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
present(picker, animated: true, completion: nil)
}
@IBAction func didTapSignIn(_ sender: AnyObject) {
showAuthPicker([
AuthProvider.authEmail,
AuthProvider.authAnonymous,
AuthProvider.authGoogle,
AuthProvider.authFacebook,
AuthProvider.authTwitter,
AuthProvider.authGitHub,
AuthProvider.authPhone,
AuthProvider.authCustom,
AuthProvider.authPasswordless,
AuthProvider.authGameCenter,
AuthProvider.authMicrosoft,
])
}
@IBAction func didTapLink(_ sender: AnyObject) {
var providers = Set([
AuthProvider.authGoogle,
AuthProvider.authFacebook,
AuthProvider.authTwitter,
AuthProvider.authPhone
])
// Remove any existing providers. Note that this is not a complete list of
// providers, so always check the documentation for a complete reference:
// https://firebase.google.com/docs/auth
let user = Auth.auth().currentUser
for info in (user?.providerData)! {
switch info.providerID {
case TwitterAuthProviderID:
providers.remove(AuthProvider.authTwitter)
case FacebookAuthProviderID:
providers.remove(AuthProvider.authFacebook)
case GoogleAuthProviderID:
providers.remove(AuthProvider.authGoogle)
case PhoneAuthProviderID:
providers.remove(AuthProvider.authPhone)
default:
break
}
}
showAuthPicker(Array(providers))
}
func setTitleDisplay(_ user: User?) {
if let name = user?.displayName {
self.navigationItem.title = "Welcome \(name)"
} else {
self.navigationItem.title = "Authentication Example"
}
}
func firebaseLogin(_ credential: AuthCredential) {
showSpinner {
if let user = Auth.auth().currentUser {
// [START link_credential]
user.link(with: credential) { (authResult, error) in
// [START_EXCLUDE]
self.hideSpinner {
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
self.tableView.reloadData()
}
// [END_EXCLUDE]
}
// [END link_credential]
} else {
// [START signin_credential]
Auth.auth().signIn(with: credential) { (authResult, error) in
// [START_EXCLUDE silent]
self.hideSpinner {
// [END_EXCLUDE]
if let error = error {
// [START_EXCLUDE]
self.showMessagePrompt(error.localizedDescription)
// [END_EXCLUDE]
return
}
// User is signed in
// [START_EXCLUDE]
// Merge prevUser and currentUser accounts and data
// ...
// [END_EXCLUDE]
// [START_EXCLUDE silent]
}
// [END_EXCLUDE]
}
// [END signin_credential]
}
}
}
@IBAction func didTapSignOut(_ sender: AnyObject) {
// [START signout]
let firebaseAuth = Auth.auth()
do {
try firebaseAuth.signOut()
} catch let signOutError as NSError {
print ("Error signing out: %@", signOutError)
}
// [END signout]
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// [START auth_listener]
handle = Auth.auth().addStateDidChangeListener { (auth, user) in
// [START_EXCLUDE]
self.setTitleDisplay(user)
self.tableView.reloadData()
// [END_EXCLUDE]
}
// [END auth_listener]
self.microsoftProvider = OAuthProvider(providerID:"microsoft.com");
self.twitterProvider = OAuthProvider(providerID:"twitter.com");
self.gitHubProvider = OAuthProvider(providerID:"github.com");
// Authenticate Game Center Local Player
// Uncomment to sign in with Game Center
// self.authenticateGameCenterLocalPlayer()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
// [START remove_auth_listener]
Auth.auth().removeStateDidChangeListener(handle!)
// [END remove_auth_listener]
}
func authenticateGameCenterLocalPlayer() {
let localPlayer = GKLocalPlayer.local
localPlayer.authenticateHandler = { (gcAuthViewController, error) in
if let gcAuthViewController = gcAuthViewController {
// Pause any activities that require user interaction, then present the
// gcAuthViewController to the player.
self.present(gcAuthViewController, animated: true, completion: nil)
} else if localPlayer.isAuthenticated {
// Local player is logged in to Game Center.
} else {
// Error
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
}
}
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
switch section {
case kSectionSignIn:
return 1
case kSectionUser, kSectionToken:
if Auth.auth().currentUser != nil {
return 1
} else {
return 0
}
case kSectionProviders:
if let user = Auth.auth().currentUser {
return user.providerData.count
}
return 0
default:
return 0
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: UITableViewCell?
switch indexPath.section {
case kSectionSignIn:
// [START current_user]
if Auth.auth().currentUser != nil {
// User is signed in.
// [START_EXCLUDE]
cell = tableView.dequeueReusableCell(withIdentifier: "SignOut")
// [END_EXCLUDE]
} else {
// No user is signed in.
// [START_EXCLUDE]
cell = tableView.dequeueReusableCell(withIdentifier: "SignIn")
// [END_EXCLUDE]
}
// [END current_user]
case kSectionUser:
cell = tableView.dequeueReusableCell(withIdentifier: "Profile")
// [START get_user_profile]
let user = Auth.auth().currentUser
// [END get_user_profile]
// [START user_profile]
if let user = user {
// The user's ID, unique to the Firebase project.
// Do NOT use this value to authenticate with your backend server,
// if you have one. Use getTokenWithCompletion:completion: instead.
let uid = user.uid
let email = user.email
let photoURL = user.photoURL
// [START_EXCLUDE]
let emailLabel = cell?.viewWithTag(1) as? UILabel
let userIDLabel = cell?.viewWithTag(2) as? UILabel
let profileImageView = cell?.viewWithTag(3) as? UIImageView
emailLabel?.text = email
userIDLabel?.text = uid
struct last {
static var photoURL: URL? = nil
}
last.photoURL = photoURL; // to prevent earlier image overwrites later one.
if let photoURL = photoURL {
DispatchQueue.global(qos: .default).async {
let data = try? Data(contentsOf: photoURL)
if let data = data {
let image = UIImage(data: data)
DispatchQueue.main.async(execute: {
if photoURL == last.photoURL {
profileImageView?.image = image
}
})
}
}
} else {
profileImageView?.image = UIImage(named: "ic_account_circle")
}
// [END_EXCLUDE]
}
// [END user_profile]
case kSectionProviders:
cell = tableView.dequeueReusableCell(withIdentifier: "Provider")
// [START provider_data]
let userInfo = Auth.auth().currentUser?.providerData[indexPath.row]
cell?.textLabel?.text = userInfo?.providerID
// Provider-specific UID
cell?.detailTextLabel?.text = userInfo?.uid
// [END provider_data]
case kSectionToken:
cell = tableView.dequeueReusableCell(withIdentifier: "Token")
let requestEmailButton = cell?.viewWithTag(4) as? UIButton
requestEmailButton?.isEnabled = (Auth.auth().currentUser?.email != nil) ? true : false
default:
fatalError("Unknown section in UITableView")
}
return cell!
}
override func tableView(_ tableView: UITableView, titleForDeleteConfirmationButtonForRowAt indexPath: IndexPath) -> String? {
return "Unlink"
}
override func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCell.EditingStyle {
if indexPath.section == kSectionProviders {
return .delete
}
return .none
}
// Swipe to delete
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
let providerID = Auth.auth().currentUser?.providerData[indexPath.row].providerID
showSpinner({
// [START unlink_provider]
Auth.auth().currentUser?.unlink(fromProvider: providerID!) { (user, error) in
// [START_EXCLUDE]
self.hideSpinner({
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
tableView.reloadData()
})
// [END_EXCLUDE]
}
// [END unlink_provider]
})
}
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
if indexPath.section == kSectionUser {
return 200
}
return 44
}
override func numberOfSections(in tableView: UITableView) -> Int {
return 4
}
@IBAction func didTokenRefresh(_ sender: AnyObject) {
let action: AuthTokenCallback = {(token, error) in
let okAction = UIAlertAction(title: self.kOKButtonText, style: .default) {
action in print(self.kOKButtonText)
}
if let error = error {
let alertController = UIAlertController(title: self.kTokenRefreshErrorAlertTitle,
message: error.localizedDescription, preferredStyle: .alert)
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)
return
}
// Log token refresh event to Scion.
Analytics.logEvent("tokenrefresh", parameters: nil)
let alertController = UIAlertController(title: self.kTokenRefreshedAlertTitle,
message: token, preferredStyle: .alert)
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)
}
// [START token_refresh]
Auth.auth().currentUser?.getIDTokenForcingRefresh(true, completion: action)
// [END token_refresh]
}
/** @fn setDisplayName
@brief Changes the display name of the current user.
*/
@IBAction func didSetDisplayName(_ sender: AnyObject) {
showTextInputPrompt(withMessage: "Display Name:") { (userPressedOK, userInput) in
if let displayName = userInput {
self.showSpinner {
// [START profile_change]
let changeRequest = Auth.auth().currentUser?.createProfileChangeRequest()
changeRequest?.displayName = displayName
changeRequest?.commitChanges { (error) in
// [START_EXCLUDE]
self.hideSpinner {
self.showTypicalUIForUserUpdateResults(withTitle: self.kSetDisplayNameTitle, error: error as NSError?)
self.setTitleDisplay(Auth.auth().currentUser)
}
// [END_EXCLUDE]
}
// [END profile_change]
}
} else {
self.showMessagePrompt("displayname can't be empty")
}
}
}
/** @fn requestVerifyEmail
@brief Requests a "verify email" email be sent.
*/
@IBAction func didRequestVerifyEmail(_ sender: AnyObject) {
showSpinner {
// [START send_verification_email]
Auth.auth().currentUser?.sendEmailVerification { (error) in
// [START_EXCLUDE]
self.hideSpinner {
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
self.showMessagePrompt("Sent")
}
// [END_EXCLUDE]
}
// [END send_verification_email]
}
}
/** @fn changeEmail
@brief Changes the email address of the current user.
*/
@IBAction func didChangeEmail(_ sender: AnyObject) {
showTextInputPrompt(withMessage: "Email Address:") { (userPressedOK, userInput) in
if let email = userInput {
self.showSpinner {
// [START change_email]
Auth.auth().currentUser?.updateEmail(to: email) { (error) in
// [START_EXCLUDE]
self.hideSpinner {
self.showTypicalUIForUserUpdateResults(withTitle: self.kChangeEmailText, error: error)
}
// [END_EXCLUDE]
}
// [END change_email]
}
} else {
self.showMessagePrompt("email can't be empty")
}
}
}
/** @fn changePassword
@brief Changes the password of the current user.
*/
@IBAction func didChangePassword(_ sender: AnyObject) {
showTextInputPrompt(withMessage: "New Password:") { (userPressedOK, userInput) in
if let password = userInput {
self.showSpinner {
// [START change_password]
Auth.auth().currentUser?.updatePassword(to: password) { (error) in
// [START_EXCLUDE]
self.hideSpinner {
self.showTypicalUIForUserUpdateResults(withTitle: self.kChangePasswordText, error: error)
}
// [END_EXCLUDE]
}
// [END change_password]
}
} else {
self.showMessagePrompt("password can't be empty")
}
}
}
/** @fn updatePhoneNumber
@brief Updates the phone number of the current user.
*/
@IBAction func didUpdatePhoneNumber(_ sender: AnyObject) {
showTextInputPrompt(withMessage: "New Phone Number:") { (userPressedOK, userInput) in
if let phoneNumber = userInput {
self.showSpinner {
// [START update_phone]
PhoneAuthProvider.provider().verifyPhoneNumber(phoneNumber, uiDelegate: nil) { (verificationID, error) in
// [START_EXCLUDE]
self.hideSpinner {
if let error = error {
self.showMessagePrompt(error.localizedDescription)
return
}
guard let verificationID = verificationID else { return }
self.showTextInputPrompt(withMessage: "Verification Code:") { (userPressedOK, userInput) in
if let verificationCode = userInput {
self.showSpinner {
// [END_EXCLUDE]
let credential = PhoneAuthProvider.provider().credential(withVerificationID: verificationID, verificationCode: verificationCode)
Auth.auth().currentUser?.updatePhoneNumber(credential) { (error) in
// [END update_phone]
self.hideSpinner {
self.showTypicalUIForUserUpdateResults(withTitle: self.kUpdatePhoneNumberText, error: error)
}
}
}
} else {
self.showMessagePrompt("verification code can't be empty")
}
}
}
}
}
} else {
self.showMessagePrompt("phone number can't be empty")
}
}
}
// MARK: - Helpers
/** @fn showTypicalUIForUserUpdateResultsWithTitle:error:
@brief Shows a @c UIAlertView if error is non-nil with the localized description of the error.
@param resultsTitle The title of the @c UIAlertView
@param error The error details to display if non-nil.
*/
func showTypicalUIForUserUpdateResults(withTitle resultsTitle: String, error: Error?) {
if let error = error {
let message = "\(error.localizedDescription)"
let okAction = UIAlertAction(title: self.kOKButtonText, style: .default) {
action in print(self.kOKButtonText)
}
let alertController = UIAlertController(title: resultsTitle,
message: message, preferredStyle: .alert)
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)
return
}
tableView.reloadData()
}
}