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// ADAppNetAuthenticator.h
// AppNetKit
// Created by Brent Royal-Gordon on 8/17/12.
// Copyright (c) 2012 Architechies. See for licensing information.
#import <Foundation/Foundation.h>
#import "AppNetKit.h"
// Use an array of these constants to specify the scopes you want to request.
extern NSString * const ANScopeStream;
extern NSString * const ANScopeEmail;
extern NSString * const ANScopeWritePost;
extern NSString * const ANScopeFollow;
extern NSString * const ANScopeMessages;
extern NSString * const ANScopeExport;
@interface ANAuthenticator : NSObject
+ (ANAuthenticator*)sharedAuthenticator;
@property (strong,nonatomic) NSString * clientID;
#pragma mark OAuth authentication flow
// OAuth browser-based authentication. Use these methods if you want to show an web page with username and password fields.
// Basic usage:
// 1. Set the clientID and redirectURL.
// 2. Call -URLToAuthenticateForScopes: or URLToAuthorizeForScopes: to get an HTTP URL.
// 3. Show that URL in a web view or in the user's default browser.
// 4. If you're using a web view, register as the web view's delegate and test each URL they navigate to with -isRedirectURL:. If you're using the user's browser, make sure the redirectURL has a URL scheme that will open your app, and test URLs your app is opened with with -isRedirectURL:.
// 5. Once you've determined you have a redirect URL on your hands, extract the access token and error message from it with -accessTokenFromRedirectURL:error:.
@property (strong,nonatomic) NSURL * redirectURL;
@property (assign,nonatomic) BOOL omitsPaymentOptions;
- (NSURL*)URLToAuthenticateForScopes:(NSArray*)scopes; // Briefly shows a blank screen if the user has already logged in
- (NSURL*)URLToAuthorizeForScopes:(NSArray *)scopes; // Always shows a permission screen, even if the user has already logged in
- (BOOL)isRedirectURL:(NSURL*)url;
- (NSString*)accessTokenFromRedirectURL:(NSURL*)redirectURL error:(NSError**)error;
#pragma mark Password authentication flow
// Password authentication. Use these methods if you want to display your own login user interface.
// Usage:
// 1. Set the passwordGrantSecret to the one the guys gave you. This is not listed anywhere online; you have to email the staff and ask them to generate one for you. Also set the clientID to the one listed online.
// 2. Show a UI with username and password fields, information about which scopes your app will be requesting, and a login button.
// 3. When the user hits the login button, call -accessTokenForScopes:withUsername:password:completion:, and show some sort of progress indicator on screen.
// 4. The completion handler will be called with either an accessToken for the account or an error.
// Quick example:
ANAuthenticator.sharedAuthenticator.clientID = myClientID;
ANAuthenticator.sharedAuthenticator.passwordGrantSecret = mySecret;
[progressIndicator startAnimating];
[ANAuthenticator.sharedAuthenticator accessTokenForScopes:@[ ANScopeStream, ANScopeWritePost ] withUsername:usernameField.text password:passwordField.text completion:^(NSString * accessToken, id rep, NSError * error) {
[progressIndicator stopAnimating];
if(!accessToken) {
[self showErrorToUser:error];
MyAccount * newAccount = [MyAccount new];
newAccount.token = accessToken;
[newAccount save];
[self showTheAppForAccount:newAccount];
// has certain requirements for your app if you use password auth. Make sure you follow them! See this page for details: <>
@property (strong,nonatomic) NSString * passwordGrantSecret;
- (void)accessTokenForScopes:(NSArray *)scopes withUsername:(NSString *)username password:(NSString *)password completion:(void (^)(NSString *accessToken, id rep, NSError * error))completion;