import UserNotifications

import OneSignal

class NotificationService: UNNotificationServiceExtension {
    
    var contentHandler: ((UNNotificationContent) -> Void)?
    var receivedRequest: UNNotificationRequest!
    var bestAttemptContent: UNMutableNotificationContent?
    
    override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
        self.receivedRequest = request;
        self.contentHandler = contentHandler
        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
        
        if let bestAttemptContent = bestAttemptContent {
            OneSignal.didReceiveNotificationExtensionRequest(self.receivedRequest, with: self.bestAttemptContent)
            contentHandler(bestAttemptContent)
        }
    }
    
    override func serviceExtensionTimeWillExpire() {
        // Called just before the extension will be terminated by the system.
        // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
        if let contentHandler = contentHandler, let bestAttemptContent =  bestAttemptContent {
            OneSignal.serviceExtensionTimeWillExpireRequest(self.receivedRequest, with: self.bestAttemptContent)
            contentHandler(bestAttemptContent)
        }
    }
    
}

#import <OneSignal/OneSignal.h>

#import "NotificationService.h"

@interface NotificationService ()

@property (nonatomic, strong) void (^contentHandler)(UNNotificationContent *contentToDeliver);
@property (nonatomic, strong) UNNotificationRequest *receivedRequest;
@property (nonatomic, strong) UNMutableNotificationContent *bestAttemptContent;

@end

@implementation NotificationService

- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler {
    self.receivedRequest = request;
    self.contentHandler = contentHandler;
    self.bestAttemptContent = [request.content mutableCopy];
    
    [OneSignal didReceiveNotificationExtensionRequest:self.receivedRequest withMutableNotificationContent:self.bestAttemptContent];
    
    self.contentHandler(self.bestAttemptContent);
}

- (void)serviceExtensionTimeWillExpire {
    // Called just before the extension will be terminated by the system.
    // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
    
    [OneSignal serviceExtensionTimeWillExpireRequest:self.receivedRequest withMutableNotificationContent:self.bestAttemptContent];
    
    self.contentHandler(self.bestAttemptContent);
}

@end

target 'project_name' do
  pod 'OneSignal', '>= 2.5.2', '< 3.0'
end

target 'OneSignalNotificationServiceExtension' do
  pod 'OneSignal', '>= 2.5.2', '< 3.0'
end

pod repo update
pod install

import OneSignal

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

   let onesignalInitSettings = [kOSSettingsKeyAutoPrompt: false]
        
   // Replace '11111111-2222-3333-4444-0123456789ab' with your OneSignal App ID.
   OneSignal.initWithLaunchOptions(launchOptions,
                                   appId: "11111111-2222-3333-4444-0123456789ab",
                                   handleNotificationAction: nil, 
      														 settings: onesignalInitSettings)
   
   OneSignal.inFocusDisplayType = OSNotificationDisplayType.notification;
   
   // Recommend moving the below line to prompt for push after informing the user about
   //   how your app will use them.
   OneSignal.promptForPushNotifications(userResponse: { accepted in
      print("User accepted notifications: \(accepted)")
   })
   
  // Sync hashed email if you have a login system or collect it.
  //   Will be used to reach the user at the most optimal time of day.
  // OneSignal.syncHashedEmail(userEmail)
   
   return true
}

#import <OneSignal/OneSignal.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
   // Replace '11111111-2222-3333-4444-0123456789ab' with your OneSignal App ID.
   [OneSignal initWithLaunchOptions:launchOptions
                              appId:@"11111111-2222-3333-4444-0123456789ab"
   				 handleNotificationAction:nil
                            settings:@{kOSSettingsKeyAutoPrompt: @false}];
   OneSignal.inFocusDisplayType = OSNotificationDisplayTypeNotification;
   
   // Recommend moving the below line to prompt for push after informing the user about
   //   how your app will use them.
   [OneSignal promptForPushNotificationsWithUserResponse:^(BOOL accepted) {
        NSLog(@"User accepted notifications: %d", accepted);
   }];
  
  // Call syncHashedEmail anywhere in your iOS app if you have the user's email.
  // This improves the effectiveness of OneSignal's "best-time" notification scheduling feature.
  // [OneSignal syncHashedEmail:userEmail];
    
   return YES;
}