@interface SalesforceManager : NSObject <SFAuthenticationManagerDelegate, SFUserAccountManagerDelegate, SFRestDelegate>

- (id)init
{
    self = [super init];

    if(self)
    {
        [SFLogger setLogLevel:SFLogLevelDebug];

        // These SFAccountManager settings are the minimum required to identify the Connected App.
        [SFUserAccountManager sharedInstance].oauthClientId = RemoteAccessConsumerKey;
        [SFUserAccountManager sharedInstance].oauthCompletionUrl = OAuthRedirectURI;
        [SFUserAccountManager sharedInstance].scopes = [NSSet setWithObjects:@"web", @"api", nil];

        // Auth manager delegate, for receiving logout and login host change events.
        [[SFAuthenticationManager sharedManager] addDelegate:self];
        [[SFUserAccountManager sharedInstance] addDelegate:self];
    }

    return self;
}

- (void)attemptLoginOnSuccess:(SFManagerLoginSuccessBlock)successBlock
                onFailure:(SFManagerLoginFailBlock)failureBlock
{
    __weak SalesforceManager *weakSelf = self;

    self.initialLoginSuccessBlock = ^(SFOAuthInfo *info)
    {
        weakSelf.authenticated = TRUE;
        successBlock();

    };

    self.initialLoginFailureBlock = ^(SFOAuthInfo *info, NSError *error)
    {
        [[SFAuthenticationManager sharedManager] logout];
        weakSelf.authenticated = FALSE;
        failureBlock();
    };

    [[SFAuthenticationManager sharedManager] loginWithCompletion:self.initialLoginSuccessBlock failure:self.initialLoginFailureBlock];
}