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FUIAuthViewController.m
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FUIAuthViewController.m
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//
// AuthViewController.m
//
// 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 FirebaseAuth;
@import FirebaseOAuthUI;
@import FirebaseEmailAuthUI;
@import FirebaseAnonymousAuthUI;
@import FirebaseGoogleAuthUI;
@import FirebaseFacebookAuthUI;
@import FirebasePhoneAuthUI;
#import "FUIAuthViewController.h"
#import "FUIAppDelegate.h"
#import "FUICustomAuthDelegate.h"
#import "FUICustomAuthPickerViewController.h"
NS_ENUM(NSUInteger, UISections) {
kSectionsSettings = 0,
kSectionsProviders,
kSectionsAnonymousSignIn,
kSectionsName,
kSectionsEmail,
kSectionsPhoneNumber,
kSectionsUID,
kSectionsAccessToken,
kSectionsIDToken
};
NS_ENUM(NSUInteger, FIRProviders) {
kIDPEmail = 0,
kIDPGoogle,
kIDPFacebook,
kIDPTwitter,
kIDPPhone,
kIDPAnonymous,
kIDPMicrosoft,
kIDPGitHub,
kIDPYahoo,
kIDPApple,
};
static NSString *const kFirebaseTermsOfService = @"https://firebase.google.com/terms/";
static NSString *const kFirebasePrivacyPolicy = @"https://firebase.google.com/support/privacy/";
@interface FUIAuthViewController () <FUIAuthDelegate>
@property (weak, nonatomic) IBOutlet UITableViewCell *cellSignIn;
@property (weak, nonatomic) IBOutlet UITableViewCell *cellName;
@property (weak, nonatomic) IBOutlet UITableViewCell *cellEmail;
@property (weak, nonatomic) IBOutlet UISwitch *emailSwitch;
@property (weak, nonatomic) IBOutlet UILabel *emailLabel;
@property (weak, nonatomic) IBOutlet UISwitch *facebookSwitch;
@property (weak, nonatomic) IBOutlet UITableViewCell *cellUID;
@property (weak, nonatomic) IBOutlet UITableViewCell *anonymousSignIn;
@property (weak, nonatomic) IBOutlet UIBarButtonItem *buttonAuthorization;
@property (weak, nonatomic) IBOutlet UITableViewCell *cellAccessToken;
@property (weak, nonatomic) IBOutlet UITableViewCell *cellIdToken;
@property (weak, nonatomic) IBOutlet UITableViewCell *cellPhoneNumber;
@property (weak, nonatomic) IBOutlet UISwitch *customScopeSwitch;
@property (nonatomic) FIRAuth *auth;
@property (nonatomic) FUIAuth *authUI;
// retain customAuthUIDelegate so it can be used when needed
@property (nonatomic) id<FUIAuthDelegate> customAuthUIDelegate;
@property (nonatomic, assign) BOOL isCustomAuthDelegateSelected;
@property (nonatomic) FIRAuthStateDidChangeListenerHandle authStateDidChangeHandle;
@end
@implementation FUIAuthViewController {
NSInteger _activityCount;
}
#pragma mark - UIViewController methods
- (void)viewDidLoad {
[super viewDidLoad];
self.tableView.rowHeight = UITableViewAutomaticDimension;
self.tableView.estimatedRowHeight = 240;
self.customAuthUIDelegate = [[FUICustomAuthDelegate alloc] init];
self.auth = [FIRAuth auth];
self.authUI = [FUIAuth defaultAuthUI];
self.authUI.TOSURL = [NSURL URLWithString:kFirebaseTermsOfService];
self.authUI.privacyPolicyURL = [NSURL URLWithString:kFirebasePrivacyPolicy];
//set AuthUI Delegate
[self onAuthUIDelegateChanged:nil];
//select all Identety providers
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPEmail
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPGoogle
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPFacebook
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPTwitter
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPPhone
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPAnonymous
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPMicrosoft
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPGitHub
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPYahoo
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
[self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:kIDPApple
inSection:kSectionsProviders]
animated:NO
scrollPosition:UITableViewScrollPositionNone];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
__weak FUIAuthViewController *weakSelf = self;
self.authStateDidChangeHandle =
[self.auth addAuthStateDidChangeListener:^(FIRAuth *_Nonnull auth, FIRUser *_Nullable user) {
[weakSelf updateUI:auth withUser:user];
}];
self.navigationController.toolbarHidden = NO;
}
-(void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.auth removeAuthStateDidChangeListener:self.authStateDidChangeHandle];
self.navigationController.toolbarHidden = YES;
}
#pragma mark - UITableViewController methods
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewAutomaticDimension;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.section == kSectionsAnonymousSignIn && indexPath.row == 0) {
FIRUser *currentUser = self.authUI.auth.currentUser;
if (currentUser.isAnonymous) {
// If the user is anonymous, delete the user to avoid dangling anonymous users.
if (currentUser.isAnonymous) {
[currentUser deleteWithCompletion:^(NSError * _Nullable error) {
if (error) {
[self showAlertWithTitlte:@"Error" message:error.localizedDescription];
return;
}
[self showAlertWithTitlte:@"" message:@"Anonymous user deleted"];
}];
}
[tableView deselectRowAtIndexPath:indexPath animated:NO];
return;
}
[self signOut];
[FUIAuth.defaultAuthUI.auth signInAnonymouslyWithCompletion:^(FIRAuthDataResult *_Nullable authResult,
NSError *_Nullable error) {
if (error) {
NSError *detailedError = error.userInfo[NSUnderlyingErrorKey];
if (!detailedError) {
detailedError = error;
}
NSLog(@"ERROR: %@", detailedError.localizedDescription);
}
}];
[tableView deselectRowAtIndexPath:indexPath animated:NO];
}
}
#pragma mark - UI methods
- (void)updateUI:(FIRAuth * _Nonnull) auth withUser:(FIRUser *_Nullable) user {
if (user) {
self.cellSignIn.textLabel.text = @"Signed-in";
self.cellName.textLabel.text = user.displayName;
self.cellEmail.textLabel.text = user.email;
self.cellPhoneNumber.textLabel.text = user.phoneNumber;
self.cellUID.textLabel.text = user.uid;
// If the user is anonymous, delete the user to avoid dangling anonymous users.
if (auth.currentUser.isAnonymous) {
[_anonymousSignIn.textLabel setText:@"Delete Anonymous User"];
}
else {
[_anonymousSignIn.textLabel setText:@"Sign In Anonymously"];
self.buttonAuthorization.title = @"Sign Out";
}
} else {
[_anonymousSignIn.textLabel setText:@"Sign In Anonymously"];
self.cellSignIn.textLabel.text = @"Not signed-in";
self.cellName.textLabel.text = @"";
self.cellEmail.textLabel.text = @"";
self.cellPhoneNumber.textLabel.text = @"";
self.cellUID.textLabel.text = @"";
self.buttonAuthorization.title = @"Sign In";
}
self.cellAccessToken.textLabel.text = [self getAllAccessTokens];
self.cellIdToken.textLabel.text = [self getAllIdTokens];
NSArray *selectedRows = [self.tableView indexPathsForSelectedRows];
[self.tableView reloadData];
for (NSIndexPath *path in selectedRows) {
[self.tableView selectRowAtIndexPath:path
animated:NO
scrollPosition:UITableViewScrollPositionNone];
}
}
- (IBAction)onAuthUIDelegateChanged:(UISwitch *)sender {
_isCustomAuthDelegateSelected = sender ? sender.isOn : NO;
if (_isCustomAuthDelegateSelected) {
self.authUI.delegate = self.customAuthUIDelegate;
} else {
self.authUI.delegate = self;
}
}
- (IBAction)onAuthorization:(id)sender {
if (!_auth.currentUser || _auth.currentUser.isAnonymous) {
FUIAuth.defaultAuthUI.autoUpgradeAnonymousUsers = YES;
_authUI.providers = [self getListOfIDPs];
NSString *providerID = self.authUI.providers.firstObject.providerID;
BOOL isPhoneAuth = [providerID isEqualToString:FIRPhoneAuthProviderID];
BOOL isEmailAuth = [providerID isEqualToString:FIREmailAuthProviderID];
BOOL shouldSkipAuthPicker = self.authUI.providers.count == 1 && (isPhoneAuth || isEmailAuth);
if (shouldSkipAuthPicker) {
if (isPhoneAuth) {
FUIPhoneAuth *provider = self.authUI.providers.firstObject;
[provider signInWithPresentingViewController:self phoneNumber:nil];
} else if (isEmailAuth) {
FUIEmailAuth *provider = self.authUI.providers.firstObject;
[provider signInWithPresentingViewController:self email:nil];
}
} else {
UINavigationController *controller = [self.authUI authViewController];
if (_isCustomAuthDelegateSelected) {
controller.navigationBar.hidden = YES;
}
[self presentViewController:controller animated:YES completion:nil];
}
} else {
[self signOut];
}
}
- (IBAction)onEmailSwitchValueChanged:(UISwitch *)sender {
if (sender.isOn) {
self.emailLabel.text = @"Password";
} else {
self.emailLabel.text = @"Link";
}
}
#pragma mark - FUIAuthDelegate methods
// this method is called only when FUIAuthViewController is delgate of AuthUI
- (void)authUI:(FUIAuth *)authUI
didSignInWithAuthDataResult:(nullable FIRAuthDataResult *)authDataResult
URL:(nullable NSURL *)url
error:(nullable NSError *)error {
if (error) {
if (error.code == FUIAuthErrorCodeUserCancelledSignIn) {
[self showAlertWithTitlte:@"Error" message:error.localizedDescription];
return;
}
if (error.code == FUIAuthErrorCodeMergeConflict) {
FIRAuthCredential *credential = error.userInfo[FUIAuthCredentialKey];
[[FUIAuth defaultAuthUI].auth
signInWithCredential:credential
completion:^(FIRAuthDataResult *_Nullable authResult,
NSError *_Nullable error) {
if (error) {
[self showAlertWithTitlte:@"Sign-In error" message:error.description];
NSLog(@"%@",error.description);
return;
}
NSString *anonymousUserID = authUI.auth.currentUser.uid;
NSString *messsage = [NSString stringWithFormat:@"A merge conflict occurred. The old user"
" ID was: %@. You are now signed in with the following credential type: %@",
anonymousUserID, [credential.provider uppercaseString]];
[self showAlertWithTitlte:@"Merge Conflict" message:messsage];
NSLog(@"%@", messsage);
}];
return;
}
NSError *detailedError = error.userInfo[NSUnderlyingErrorKey];
if (!detailedError) {
detailedError = error;
}
NSLog(@"ERROR: %@", detailedError.localizedDescription);
}
}
#pragma mark - Helper Methods
- (NSString *)getAllAccessTokens {
NSMutableString *result = [NSMutableString new];
for (id<FUIAuthProvider> provider in _authUI.providers) {
[result appendFormat:@"%@: %@\n", provider.shortName, provider.accessToken];
}
return result;
}
- (NSString *)getAllIdTokens {
NSMutableString *result = [NSMutableString new];
for (id<FUIAuthProvider> provider in _authUI.providers) {
[result appendFormat:@"%@: %@\n", provider.shortName, provider.idToken];
}
return result;
}
- (void)signOut {
NSError *error;
[self.authUI signOutWithError:&error];
if (error) {
[self showAlertWithTitlte:@"Error" message:error.localizedDescription];
}
}
- (void)showAlertWithTitlte:(NSString *)title message:(NSString *)message {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:title
message:message
preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction* closeButton = [UIAlertAction
actionWithTitle:@"Close"
style:UIAlertActionStyleDefault
handler:nil];
[alert addAction:closeButton];
[self presentViewController:alert animated:YES completion:nil];
}
- (NSArray *)getListOfIDPs {
return [[self class] getListOfIDPs:[self.tableView indexPathsForSelectedRows]
useCustomScopes:_customScopeSwitch.isOn
useEmailLink:_emailSwitch.isOn
useFacebookLimitedLogin:_facebookSwitch.isOn];
}
+ (NSArray *)getListOfIDPs:(NSArray<NSIndexPath *> *)selectedRows
useCustomScopes:(BOOL)useCustomScopes
useEmailLink:(BOOL)useEmaiLink
useFacebookLimitedLogin:(BOOL)useLimitedLogin {
NSMutableArray *providers = [NSMutableArray new];
for (NSIndexPath *indexPath in selectedRows) {
if (indexPath.section == kSectionsProviders) {
id<FUIAuthProvider> provider;
switch (indexPath.row) {
case kIDPEmail:
if (useEmaiLink) {
// ActionCodeSettings for email link sign-in.
FIRActionCodeSettings *actionCodeSettings = [[FIRActionCodeSettings alloc] init];
actionCodeSettings.URL = [NSURL URLWithString:@"https://fb-sa-1211.appspot.com"];
actionCodeSettings.handleCodeInApp = YES;
[actionCodeSettings setAndroidPackageName:@"com.firebase.uidemo"
installIfNotAvailable:NO
minimumVersion:@"12"];
provider = [[FUIEmailAuth alloc] initAuthAuthUI:[FUIAuth defaultAuthUI]
signInMethod:FIREmailLinkAuthSignInMethod
forceSameDevice:NO
allowNewEmailAccounts:YES
requireDisplayName:YES
actionCodeSetting:actionCodeSettings];
} else {
provider = [[FUIEmailAuth alloc] initAuthAuthUI:[FUIAuth defaultAuthUI]
signInMethod:FIREmailPasswordAuthSignInMethod
forceSameDevice:NO
allowNewEmailAccounts:YES
requireDisplayName:NO
actionCodeSetting:[[FIRActionCodeSettings alloc] init]];
}
break;
case kIDPGoogle:
provider = useCustomScopes ? [[FUIGoogleAuth alloc] initWithAuthUI:[FUIAuth defaultAuthUI]
scopes:@[kGoogleUserInfoEmailScope,
kGoogleUserInfoProfileScope,
kGoogleGamesScope,
kGooglePlusMeScope]]
: [[FUIGoogleAuth alloc] initWithAuthUI:[FUIAuth defaultAuthUI]];
break;
case kIDPFacebook:
provider = useCustomScopes ? [[FUIFacebookAuth alloc] initWithAuthUI:[FUIAuth defaultAuthUI]
permissions:@[@"email",
@"user_friends",
@"ads_read"]]
:[[FUIFacebookAuth alloc] initWithAuthUI:[FUIAuth defaultAuthUI]];
((FUIFacebookAuth *)provider).useLimitedLogin = useLimitedLogin;
break;
case kIDPTwitter:
provider = [FUIOAuth twitterAuthProvider];
break;
case kIDPPhone:
provider = [[FUIPhoneAuth alloc] initWithAuthUI:[FUIAuth defaultAuthUI]];
break;
case kIDPAnonymous:
provider = [[FUIAnonymousAuth alloc] initWithAuthUI:[FUIAuth defaultAuthUI]];
break;
case kIDPMicrosoft:
provider = [FUIOAuth microsoftAuthProvider];
break;
case kIDPGitHub:
provider = [FUIOAuth githubAuthProvider];
break;
case kIDPYahoo:
provider = [FUIOAuth yahooAuthProvider];
break;
case kIDPApple:
provider = [FUIOAuth appleAuthProvider];
break;
default:
break;
}
if (provider) {
[providers addObject:provider];
}
}
}
return providers;
}
@end