AppDelegateBefore.m

#import "AppDelegate.h"

@interface AppDelegate ()

@property (strong, nonatomic) NSManagedObjectContext *managedObjectContext;
@property (strong, nonatomic) GCDWebServer *webServer;

@end

@implementation AppDelegate

#pragma mark - UIApplicationDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    [self bootstrapApplication];
    
    return YES;
    
}

- (void)bootstrapApplication {
    
    [self setUpHttpServer];
    
    if (![self userIsAuthenticated]) {
        [self showLoginView];
    } else {
        [self setUpDatabase:^{
          [self showHomeView];
        }];
    }
    
}

- (BOOL)userIsAuthenticated {

    // Query keychain for authentication data
    return YES;

}

- (void)showLogInView {
    
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"LogIn" bundle:nil];
    LogInViewController *logInController = (LogInViewController *)[storyboard instantiateInitialViewController];
    
    // Set up more dependencies, store them on the delegate, and inject them
    
    [self changeRootViewController:logInController];
    
}

- (void)showHomeView {
    
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Home" bundle:nil];
    UISplitViewController *homeController = (UISplitViewController *)[storyboard instantiateInitialViewController];
    
    // Set up EVEN MORE dependencies, store them on the delegate, and inject them
    
    [self changeRootViewController:homeController];
    
}

- (void)changeRootViewController:(UIViewController *)viewController {
    
    self.window.rootViewController = viewController;
    
}

- (void)authenticationStatusDidChange:(NSNotification *)notification {
    
    if ([self userIsAuthenticated]) {
        [self showHomeView];
    } else {
        [self showLoginView];
    }
    
}

#pragma mark - 

- (void)setUpWebServer {
    
    if (!_webServer) {
        _webServer = [[GCDWebServer alloc] init];
        [_webServer startWithPort:0 bonjourName:nil];
    }
    
}

#pragma mark - 

- (void)setUpDatabase:(void (^)(void))callback {

    // Create persistent store coordinator, managed object context, etc. in another thread then execute callback block

}

@end