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November 23, 2016 17:42
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LoginFireBaseVC - Implements Logging auth for Firebase : Facebook/Twitter & set Email/PW. Also, captures email address & profile images
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| // | |
| // LoginVC.m | |
| // | |
| // Created by Adam Chin on 7/14/16. | |
| // | |
| // This implementation is an example of Login Methods to Firebase | |
| // Google's MBaaS. It includes login auths to Facebook and Twitter | |
| // as well as Email Logging. | |
| // | |
| // Client Requirements: | |
| // * Loging / Auth via Facebook, Twitter & Email | |
| // * Storing Users Email for future contact | |
| // * Capturing Images from Facebook / Twitter for optionally setting | |
| // the users profile image consistently or making a new one (outside of the scope of this file) | |
| // Practical use & suggestions: | |
| // 1) If you're not an iOS developer find one to explain | |
| // 2) It is required to set up a Firebase account, and set up your project accordingly | |
| // either manually or with CocoaPods | |
| // 3) In the Firebase console, set up FaceBook, Twitter, and Email auth | |
| // 4) Design a Login screen with appropriate UI IBOutlets | |
| // | |
| // If you would like to see this example working in an app, contact me | |
| // and if I have available time I will help you. | |
| // Note: This isn't 100% prod ready as a few spots need further error handling and clean up. | |
| #import "LoginVC.h" | |
| #import "MBProgressHUD.h" | |
| #import "UIViewController+Alerts.h" | |
| #import <FBSDKCoreKit/FBSDKCoreKit.h> | |
| #import <FBSDKLoginKit/FBSDKLoginKit.h> | |
| #import "IonIcons.h" | |
| @import FirebaseAuth; | |
| @import TwitterKit; | |
| #import "MBProgressHUD.h" | |
| #import "TwitterAPIBundle.h" | |
| #define USERPW_AUTHENTICATION_TYPE @"Username-Password-Authentication" | |
| #define HTTP_RESPONSE_ISSUE 202 | |
| #define TWITTER_PROFILE_URL @"https://api.twitter.com/1.1/account/verify_credentials.json" | |
| @interface LoginVC () <UITextFieldDelegate> | |
| @property (weak, nonatomic) IBOutlet UIButton *signInButton; | |
| @property (weak, nonatomic) IBOutlet UIButton *cancelButton; | |
| @property(weak, nonatomic) IBOutlet UITextField *emailField; | |
| @property(weak, nonatomic) IBOutlet UITextField *passwordField; | |
| @property (nonatomic, weak) IBOutlet UIButton *facebookButton; | |
| @property (nonatomic, weak) IBOutlet UIButton *twitterButton; | |
| @property (weak, nonatomic) IBOutlet UIActivityIndicatorView *ActivityIndicator; | |
| @property (strong, nonatomic) NSString *twitterEmail; | |
| @property (nonatomic, weak) NSString *connectionType; | |
| @end | |
| @implementation LoginVC | |
| - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { | |
| [self.view endEditing:YES]; | |
| } | |
| - (void)viewDidLoad { | |
| [super viewDidLoad]; | |
| // Do any additional setup after loading the view. | |
| self.ActivityIndicator.hidesWhenStopped = YES; | |
| [self.emailField.layer addSublayer:[GlobalUI bottomBorderFor:self.emailField]]; | |
| [self.passwordField.layer addSublayer:[GlobalUI bottomBorderFor:self.passwordField]]; | |
| } | |
| - (IBAction)cancel:(id)sender | |
| { | |
| [self dismissViewControllerAnimated:YES completion:nil]; | |
| } | |
| -(void)viewWillAppear:(BOOL)animated | |
| { | |
| [super viewWillAppear:animated]; | |
| self.emailField.delegate = self; | |
| self.passwordField.delegate = self; | |
| self.signInButton.layer.cornerRadius = 5; | |
| self.signInButton.clipsToBounds = YES; | |
| self.cancelButton.layer.cornerRadius = 5; | |
| self.cancelButton.clipsToBounds = YES; | |
| self.facebookButton.layer.cornerRadius = 5; | |
| self.facebookButton.clipsToBounds = YES; | |
| self.twitterButton.layer.cornerRadius = 5; | |
| self.twitterButton.clipsToBounds = YES; | |
| } | |
| - (BOOL)textFieldShouldReturn:(UITextField *)textField { | |
| if (textField == self.emailField) | |
| { | |
| [textField resignFirstResponder]; | |
| [self.passwordField becomeFirstResponder]; | |
| } else if (textField == self.passwordField) { | |
| [self didTapEmailLogin:self]; | |
| } | |
| return YES; | |
| } | |
| - (IBAction)socialLogin:(id)sender { | |
| [self.ActivityIndicator startAnimating]; | |
| if (sender == self.facebookButton) | |
| { | |
| if ([FBSDKAccessToken currentAccessToken]) // check for fb token | |
| { | |
| [self.ActivityIndicator stopAnimating]; | |
| UIAlertController *alert = [UIAlertController | |
| alertControllerWithTitle:@"Facebook Login" | |
| message:@"Already Logged in, no need to login again.." | |
| preferredStyle:UIAlertControllerStyleAlert]; | |
| UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:@"Ok" | |
| style:UIAlertActionStyleCancel | |
| handler:^(UIAlertAction *action) { | |
| }]; | |
| [alert addAction:defaultAction]; | |
| [self presentViewController:alert animated:YES completion:nil]; | |
| } | |
| else | |
| { | |
| FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init]; | |
| [login logInWithReadPermissions:@[@"public_profile", @"email"] | |
| fromViewController:self | |
| handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) { | |
| NSLog(@"Facebook Response Data: %@",result); | |
| if (error) { | |
| [self.ActivityIndicator stopAnimating]; | |
| UIAlertController *alert = [UIAlertController | |
| alertControllerWithTitle:@"Facebook" | |
| message:@"Could not login to Facebook at this time, try again later.." | |
| preferredStyle:UIAlertControllerStyleAlert]; | |
| UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:@"Ok" | |
| style:UIAlertActionStyleCancel | |
| handler:^(UIAlertAction *action) { | |
| }]; | |
| [alert addAction:defaultAction]; | |
| [self presentViewController:alert animated:YES completion:nil]; | |
| } else { | |
| [self.ActivityIndicator stopAnimating]; | |
| #ifdef DEBUG | |
| NSLog(@"----------------------------------------------->"); | |
| NSLog(@" FBSDKLoginManager: Login success"); | |
| NSLog(@" Result: %@",result); | |
| NSLog(@"----------------------------------------------->"); | |
| #endif | |
| if ([FBSDKAccessToken currentAccessToken]) // on | |
| { | |
| // get facebook profile image with currentAccessToken.userID: | |
| NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?type=normal", | |
| [FBSDKAccessToken currentAccessToken].userID]]; | |
| NSData *data = [NSData dataWithContentsOfURL:url]; | |
| if (data) | |
| { | |
| NSString *fileName = @"faceBookProfile.jpg"; | |
| NSFileManager *fm = [NSFileManager new]; | |
| NSError *err = nil; | |
| NSURL *docsURL = [fm URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:YES error:&err]; | |
| NSURL *jsonFolder = [docsURL URLByAppendingPathComponent:@"SocialProfileImages"]; | |
| if ([fm createDirectoryAtURL:jsonFolder | |
| withIntermediateDirectories:YES | |
| attributes:nil | |
| error:&err]) | |
| { | |
| NSURL *fileURL = [jsonFolder URLByAppendingPathComponent:fileName]; | |
| if ([data writeToURL:fileURL options:NSDataWritingAtomic error:&err]) | |
| { | |
| #ifdef DEBUG | |
| NSLog(@"----------------------------------------------->"); | |
| NSLog(@" Saved Facebook Profile Pic"); | |
| NSLog(@"----------------------------------------------->"); | |
| #endif | |
| } | |
| else | |
| { | |
| NSLog(@"file not saved :%@ error: %@",fileName, err); | |
| } | |
| } | |
| } | |
| FIRAuthCredential *credential = [FIRFacebookAuthProvider | |
| credentialWithAccessToken:[FBSDKAccessToken currentAccessToken].tokenString]; | |
| [[FIRAuth auth] signInWithCredential:credential | |
| completion:^(FIRUser *user, NSError *error) { | |
| if (error) { | |
| NSLog(@"Error logging into Firebase: %@", error); | |
| } else | |
| { | |
| #ifdef DEBUG | |
| NSLog(@"----------------------------------------------->"); | |
| NSLog(@" FIRAuth Facebook SignInWithCredential: Login success"); | |
| NSLog(@" Result: %@",user); | |
| NSLog(@"----------------------------------------------->"); | |
| #endif | |
| MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES]; | |
| hud.mode = MBProgressHUDModeCustomView; | |
| UIImage *image = [[UIImage imageNamed:@"Checkmark"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate]; | |
| hud.customView = [[UIImageView alloc] initWithImage:image]; | |
| hud.square = YES; | |
| hud.label.text = NSLocalizedString(@"Success!", @"HUD done title"); | |
| [hud hideAnimated:YES afterDelay:2.f]; | |
| [self performSelector:@selector(dismissView) withObject:self afterDelay:2.0]; | |
| } | |
| }]; | |
| } | |
| } | |
| }]; | |
| } | |
| } | |
| else if (sender == self.twitterButton) | |
| { | |
| self.connectionType = @"twitter"; | |
| [self twitterStartLoginFlow]; | |
| [self.ActivityIndicator stopAnimating]; | |
| } | |
| } | |
| // MARK: twitter login methods | |
| -(void)twitterStartLoginFlow | |
| { | |
| TWTRLogInButton* logInButton = [TWTRLogInButton buttonWithLogInCompletion:^(TWTRSession* session, NSError* error) { | |
| }]; | |
| logInButton.loginMethods = TWTRLoginMethodWebBased; | |
| [[Twitter sharedInstance] logInWithMethods:TWTRLoginMethodWebBased completion:^(TWTRSession *session, NSError *error) { | |
| if (session) { | |
| TWTRAPIClient *client = [TWTRAPIClient clientWithCurrentUser]; | |
| NSURLRequest *request = [client URLRequestWithMethod:@"GET" | |
| URL:TWITTER_PROFILE_URL | |
| parameters:@{@"include_email": @"true", @"skip_status": @"true"} | |
| error:nil]; | |
| [client sendTwitterRequest:request completion:^(NSURLResponse *response, NSData *data, NSError *connectionError) { | |
| NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response; | |
| if ((long)[httpResponse statusCode] > HTTP_RESPONSE_ISSUE) | |
| { | |
| UIAlertController *alert = [UIAlertController | |
| alertControllerWithTitle:@"Twitter Login" | |
| message:@"There's an issue with the Twitter service.." | |
| preferredStyle:UIAlertControllerStyleAlert]; | |
| UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:@"Ok" | |
| style:UIAlertActionStyleCancel | |
| handler:^(UIAlertAction *action) { | |
| }]; | |
| [alert addAction:defaultAction]; | |
| [self presentViewController:alert animated:YES completion:nil]; | |
| return; | |
| } | |
| NSDictionary *responseData = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil]; | |
| if (responseData) { | |
| self.twitterEmail = [responseData valueForKey:@"email"]; | |
| if (self.twitterEmail.length) { | |
| dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ | |
| [self twitterSignInToFirebaseAndLogEmail:session]; | |
| [self getTwitterProfileImage:session]; | |
| }); | |
| [self.ActivityIndicator stopAnimating]; | |
| MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES]; | |
| hud.mode = MBProgressHUDModeCustomView; | |
| UIImage *image = [[UIImage imageNamed:@"Checkmark"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate]; | |
| hud.customView = [[UIImageView alloc] initWithImage:image]; | |
| hud.square = YES; | |
| hud.label.text = NSLocalizedString(@"Success!", @"HUD done title"); | |
| [hud hideAnimated:YES afterDelay:2.f]; | |
| [self performSelector:@selector(dismissView) withObject:self afterDelay:2.f]; | |
| } | |
| } | |
| }]; | |
| } else [self.ActivityIndicator stopAnimating]; | |
| }]; | |
| } | |
| -(void)twitterSignInToFirebaseAndLogEmail:(TWTRSession*)session | |
| { | |
| if (session) | |
| { | |
| __weak NSString *weakself = self.twitterEmail; | |
| FIRAuthCredential *credential = [FIRTwitterAuthProvider credentialWithToken:session.authToken | |
| secret:session.authTokenSecret]; | |
| [[FIRAuth auth] signInWithCredential:credential | |
| completion:^(FIRUser *user, NSError *error) { | |
| if (error) { | |
| // NSLog(@"Error logging into Twitter: %@", error); | |
| } | |
| else | |
| { | |
| [[FIRAuth auth].currentUser updateEmail:weakself | |
| completion:^(NSError * _Nullable error) { | |
| if (error) { | |
| } | |
| else{ | |
| #ifdef DEBUG | |
| NSLog(@"----------------------------------------------->"); | |
| NSLog(@" FIRAuth Twitter Added email to Firebase profile:"); | |
| NSLog(@" Result: %@",user); | |
| NSLog(@"----------------------------------------------->"); | |
| #endif | |
| } | |
| }]; | |
| } | |
| }]; | |
| } else [self.ActivityIndicator stopAnimating]; | |
| } | |
| -(void)getTwitterProfileImage:(TWTRSession*)session | |
| { | |
| if (session) { | |
| TWTRAPIClient *client = [TWTRAPIClient clientWithCurrentUser]; | |
| NSString *userID = [Twitter sharedInstance].sessionStore.session.userID; | |
| [client loadUserWithID:userID completion:^(TWTRUser * _Nullable user, NSError * _Nullable error) { | |
| if (user.profileImageLargeURL.length) | |
| { | |
| NSString *stringURL = user.profileImageLargeURL; | |
| NSURL *url = [NSURL URLWithString:stringURL]; | |
| NSData *urlData = [NSData dataWithContentsOfURL:url]; | |
| if (urlData) | |
| { | |
| NSString *fileName = @"twitterProfile.jpg"; | |
| NSFileManager *fm = [NSFileManager new]; | |
| NSError *err = nil; | |
| NSURL *docsURL = [fm URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:YES error:&err]; | |
| NSURL *jsonFolder = [docsURL URLByAppendingPathComponent:@"SocialProfileImages"]; | |
| if ([fm createDirectoryAtURL:jsonFolder | |
| withIntermediateDirectories:YES | |
| attributes:nil | |
| error:&err]) | |
| { | |
| NSURL *fileURL = [jsonFolder URLByAppendingPathComponent:fileName]; | |
| if ([urlData writeToURL:fileURL options:NSDataWritingAtomic error:&err]) | |
| { | |
| #ifdef DEBUG | |
| NSLog(@"----------------------------------------------->"); | |
| NSLog(@" Saved Twitter Profile Image:"); | |
| NSLog(@"----------------------------------------------->"); | |
| #endif | |
| } | |
| else | |
| { | |
| NSLog(@"file not saved :%@ error: %@",fileName, err); | |
| } | |
| } | |
| } | |
| } | |
| }]; | |
| } else [self.ActivityIndicator stopAnimating]; | |
| } | |
| // MARK: email login methods | |
| - (IBAction)didTapEmailLogin:(id)sender { | |
| [self.ActivityIndicator startAnimating]; | |
| NSString *email = self.emailField.text; | |
| NSString *password = self.passwordField.text; | |
| [[FIRAuth auth] signInWithEmail:email | |
| password:password | |
| completion:^(FIRUser * _Nullable user, NSError * _Nullable error) { | |
| if (error) { | |
| [self.ActivityIndicator stopAnimating]; | |
| } | |
| else { | |
| #ifdef DEBUG | |
| NSLog(@"----------------------------------------------->"); | |
| NSLog(@" FIRAuth Sign in with Email"); | |
| NSLog(@" Success with user: %@",user); | |
| NSLog(@"----------------------------------------------->"); | |
| #endif | |
| [self.ActivityIndicator stopAnimating]; | |
| MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES]; | |
| hud.mode = MBProgressHUDModeCustomView; | |
| UIImage *image = [[UIImage imageNamed:@"Checkmark"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate]; | |
| hud.customView = [[UIImageView alloc] initWithImage:image]; | |
| hud.square = YES; | |
| hud.label.text = NSLocalizedString(@"Success!", @"HUD done title"); | |
| [hud hideAnimated:YES afterDelay:2.f]; | |
| [self performSelector:@selector(dismissView) withObject:self afterDelay:2.f]; | |
| } | |
| }]; | |
| } | |
| - (IBAction)didRequestPasswordReset:(id)sender { | |
| [self showTextInputPromptWithMessage:@"Enter Email for password reset:" | |
| completionBlock:^(BOOL userPressedOK, NSString *_Nullable userInput) { | |
| if (!userPressedOK || !userInput.length) { | |
| return; | |
| } | |
| [self showSpinner:^{ | |
| [[FIRAuth auth] | |
| sendPasswordResetWithEmail:userInput | |
| completion:^(NSError *_Nullable error) { | |
| // [START_EXCLUDE] | |
| [self hideSpinner:^{ | |
| if (error) { | |
| [self | |
| showMessagePrompt:error | |
| .localizedDescription]; | |
| return; | |
| } | |
| [self showMessagePrompt:@"Sent"]; | |
| }]; | |
| }]; | |
| }]; | |
| }]; | |
| } | |
| -(void)dismissView | |
| { | |
| [self dismissViewControllerAnimated:YES completion:nil]; | |
| } | |
| - (void)didReceiveMemoryWarning | |
| { | |
| [super didReceiveMemoryWarning]; | |
| // Dispose of any resources that can be recreated. | |
| } | |
| @end |
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