/*

Copyright (C) 2015 Apple Inc. All Rights Reserved.

See LICENSE.txt for this sample’s licensing information

Abstract:

A container view controller that manages an ADBannerView and a content view controller.

*/

@import iAd;

#import "BannerViewController.h"

NSString * const BannerViewActionWillBegin = @"BannerViewActionWillBegin";

NSString * const BannerViewActionDidFinish = @"BannerViewActionDidFinish";

@interface BannerViewController () <ADBannerViewDelegate>

@property (nonatomic, strong) ADBannerView *bannerView;

@property (nonatomic, strong) UIViewController *contentController;

@end

#pragma mark -

@implementation BannerViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // On iOS 6 ADBannerView introduces a new initializer, use it when available

    if ([ADBannerView instancesRespondToSelector:@selector(initWithAdType:)]) {

        _bannerView = [[ADBannerView alloc] initWithAdType:ADAdTypeBanner];

    }

    else {

        _bannerView = [[ADBannerView alloc] init];

    }

    self.bannerView.delegate = self;

    [self.view addSubview:self.bannerView];

    self.contentController = self.childViewControllers[0];  // remember who our content child is

}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {

    return [self.contentController preferredInterfaceOrientationForPresentation];

}

- (void)viewDidLayoutSubviews {

    CGRect contentFrame = self.view.bounds, bannerFrame = CGRectZero;

    // All we need to do is ask the banner for a size that fits into the layout area we are using.

    // At this point in this method contentFrame=self.view.bounds, so we'll use that size for the layout.

    bannerFrame.size = [self.bannerView sizeThatFits:contentFrame.size];

    if (self.bannerView.bannerLoaded) {

        contentFrame.size.height -= bannerFrame.size.height;

        bannerFrame.origin.y = contentFrame.size.height;

    }

    else {

        bannerFrame.origin.y = contentFrame.size.height;

    }

    self.contentController.view.frame = contentFrame;

    self.bannerView.frame = bannerFrame;

}

- (void)bannerViewDidLoadAd:(ADBannerView *)banner {

    [UIView animateWithDuration:0.25 animations:^{

        // viewDidLayoutSubviews will handle positioning the banner view so that it is visible.

        // You must not call [self.view layoutSubviews] directly.  However, you can flag the view

        // as requiring layout...

        [self.view setNeedsLayout];

        // ... then ask it to lay itself out immediately if it is flagged as requiring layout...

        [self.view layoutIfNeeded];

        // ... which has the same effect.

    }];

}

- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error {

    NSLog(@"didFailToReceiveAdWithError %@", error);

    [UIView animateWithDuration:0.25 animations:^{

        // viewDidLayoutSubviews will handle positioning the banner view so that it is hidden.

        // You must not call [self.view layoutSubviews] directly.  However, you can flag the view

        // as requiring layout...

        [self.view setNeedsLayout];

        // ... then ask it to lay itself out immediately if it is flagged as requiring layout...

        [self.view layoutIfNeeded];

        // ... which has the same effect.

    }];

}

- (BOOL)bannerViewActionShouldBegin:(ADBannerView *)banner willLeaveApplication:(BOOL)willLeave {

    [[NSNotificationCenter defaultCenter] postNotificationName:BannerViewActionWillBegin object:self];

    return YES;

}

- (void)bannerViewActionDidFinish:(ADBannerView *)banner {

    [[NSNotificationCenter defaultCenter] postNotificationName:BannerViewActionDidFinish object:self];

}

@end