Notifications-AppDelegate.swift

AppDelegate.swift

import UIKit
import Firebase

class AppDelegate: UIResponder, UIApplicationDelegate {
  
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Always call first, before doing anything Firebase related.
        FirebaseApp.configure()
        // The reference to our wrapper. 
        // You might want to pass it down to your controllers using dependency injection.
        // Wherever you're checking the auth status of your users.
        let notificationsManager = NotificationsManager(registerIn: application, delegate: self)
        ...
        return true
    }
}

// MARK: - NotificationManagerDelegate
extension AppDelegate: NotificationManagerDelegate {
  
    // The following is an implementation example
    func notificationsManager(didReceiveToken token: String) {
        // Once we have a new token, we need to associate it with a user
        guard let userID = authManager?.userID else {
            return
        }
        // Then we need to pass it to the database.
        // Now the backend handles the rest...
        databaseManager?.updateUser(
            ["gcmToken": token], 
            for: userID) 
    }

    func notificationsManager(didReceiveError error: Error) {
        // Handle appropriatly
    }

    func notificationsManager(didReceiveNotification payload: NotificationPayload, withResponse didRespond: Bool) {
        // Utilize the information as needed.
        // In most cases you want to deep link now on user action.
    }
}