//
//  GADRewardedAd.h
//  Google Mobile Ads SDK
//
//  Copyright 2020 Google LLC. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

#import <GoogleMobileAds/GADAdMetadata.h>
#import <GoogleMobileAds/GADAdReward.h>
#import <GoogleMobileAds/GADAdValue.h>
#import <GoogleMobileAds/GADFullScreenContentDelegate.h>
#import <GoogleMobileAds/GADRequest.h>
#import <GoogleMobileAds/GADResponseInfo.h>
#import <GoogleMobileAds/GADServerSideVerificationOptions.h>

@class GADRewardedAd;

/// A block to be executed when the ad request operation completes. On success,
/// rewardedAd is non-nil and |error| is nil. On failure, rewardedAd is nil
/// and |error| is non-nil.
typedef void (^GADRewardedAdLoadCompletionHandler)(GADRewardedAd *_Nullable rewardedAd,
                                                   NSError *_Nullable error);

/// A rewarded ad. Rewarded ads are ads that users have the option of interacting with in exchange
/// for in-app rewards.
NS_SWIFT_NAME(RewardedAd)
@interface GADRewardedAd : NSObject <GADAdMetadataProvider, GADFullScreenPresentingAd>

/// The ad unit ID.
@property(nonatomic, readonly, nonnull) NSString *adUnitID;

/// Information about the ad response that returned the ad.
@property(nonatomic, readonly, nonnull) GADResponseInfo *responseInfo;

/// The reward earned by the user for interacting with the ad.
@property(nonatomic, readonly, nonnull) GADAdReward *adReward;

/// Options specified for server-side user reward verification. Must be set before presenting this
/// ad.
@property(nonatomic, copy, nullable)
    GADServerSideVerificationOptions *serverSideVerificationOptions;

/// Delegate for handling full screen content messages.
@property(nonatomic, weak, nullable) id<GADFullScreenContentDelegate> fullScreenContentDelegate;

/// Called when the ad is estimated to have earned money. Available for allowlisted accounts only.
@property(nonatomic, nullable, copy) GADPaidEventHandler paidEventHandler;

/// Loads a rewarded ad.
///
/// @param adUnitID An ad unit ID created in the AdMob or Ad Manager UI.
/// @param request An ad request object. If nil, a default ad request object is used.
/// @param completionHandler A handler to execute when the load operation finishes or times out.
+ (void)loadWithAdUnitID:(nonnull NSString *)adUnitID
                 request:(nullable GADRequest *)request
       completionHandler:(nonnull GADRewardedAdLoadCompletionHandler)completionHandler
    NS_SWIFT_NAME(load(with:request:completionHandler:));

/// Loads a rewarded ad.
///
/// @param adResponseString A server-to-server ad response string.
/// @param completionHandler A handler to execute when the load operation finishes or times out.
+ (void)loadWithAdResponseString:(nonnull NSString *)adResponseString
               completionHandler:(nonnull GADRewardedAdLoadCompletionHandler)completionHandler
    NS_SWIFT_NAME(load(with:completionHandler:));

/// Indicates whether the rewarded ad can be presented from the provided root view controller. Must
/// be called on the main thread.
///
/// - Parameters:
///   - rootViewController: The root view controller to present the ad from. If `rootViewController`
/// is `nil`, uses the top view controller of the application's main window.
///   - error: Sets the error out parameter if the ad can't be presented.
/// - Returns: `YES` if the rewarded ad can be presented from the provided root view controller,
/// `NO` otherwise.
- (BOOL)canPresentFromRootViewController:(nullable UIViewController *)rootViewController
                                   error:(NSError *_Nullable __autoreleasing *_Nullable)error
    NS_SWIFT_NAME(canPresent(from:)) NS_SWIFT_UI_ACTOR;

/// Presents the rewarded ad. Must be called on the main thread.
///
/// @param rootViewController A view controller to present the ad. If nil, attempts to present from
/// the top view controller of the application's main window.
/// @param userDidEarnRewardHandler A handler to execute when the user earns a reward.
- (void)presentFromRootViewController:(nullable UIViewController *)rootViewController
             userDidEarnRewardHandler:(nonnull GADUserDidEarnRewardHandler)userDidEarnRewardHandler
    NS_SWIFT_NAME(present(from:userDidEarnRewardHandler:)) NS_SWIFT_UI_ACTOR;

@end
