//
//  PNObjectUtilities.m
//  Pods
//
//  Created by Giuseppe Nucifora on 17/03/16.
//
//

#import "PNObjectUtilities.h"

@implementation PNObjectUtilities

+ (UIViewController *)topViewController {
    return [self topViewController:[UIApplication sharedApplication].keyWindow.rootViewController];
}

+ (UIViewController *)topViewController:(UIViewController *)rootViewController
{
    if (rootViewController.presentedViewController == nil) {
        return rootViewController;
    }
    
    if ([rootViewController.presentedViewController isKindOfClass:[UINavigationController class]]) {
        UINavigationController *navigationController = (UINavigationController *)rootViewController.presentedViewController;
        UIViewController *lastViewController = [[navigationController viewControllers] lastObject];
        return [self topViewController:lastViewController];
    }
    
    UIViewController *presentedViewController = (UIViewController *)rootViewController.presentedViewController;
    return [self topViewController:presentedViewController];
}

@end