mayday/Mayday/AppDelegate.swift

import UIKit
import UserNotifications

class AppDelegate: NSObject, UIApplicationDelegate {
    func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil
    ) -> Bool {
        return true
    }

    func application(
        _ application: UIApplication,
        didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data
    ) {
        Task { @MainActor in
            PushNotificationService.shared.handleDeviceToken(deviceToken)
        }
    }

    func application(
        _ application: UIApplication,
        didFailToRegisterForRemoteNotificationsWithError error: Error
    ) {
        print("Failed to register for remote notifications: \(error)")
    }

    func application(
        _ application: UIApplication,
        didReceiveRemoteNotification userInfo: [AnyHashable: Any],
        fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void
    ) {
        Task { @MainActor in
            await PushNotificationService.shared.handleRemoteNotification(userInfo)
            completionHandler(.newData)
        }
    }
}