import Flutter
import Firebase
import FirebaseMessaging
import UIKit

@main
@objc class AppDelegate: FlutterAppDelegate, FlutterImplicitEngineDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    // Explicitly register for remote notifications on every launch so iOS always
    // calls didRegisterForRemoteNotificationsWithDeviceToken, ensuring Firebase
    // receives a fresh APNs token regardless of whether permission was already granted.
    application.registerForRemoteNotifications()
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }

  func didInitializeImplicitFlutterEngine(_ engineBridge: FlutterImplicitEngineBridge) {
    GeneratedPluginRegistrant.register(with: engineBridge.pluginRegistry)
  }

  // FlutterImplicitEngineDelegate can interfere with Firebase's method swizzling,
  // preventing it from capturing the APNs token. Forward it explicitly instead.
  override func application(
    _ application: UIApplication,
    didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data
  ) {
    Messaging.messaging().apnsToken = deviceToken
    super.application(application, didRegisterForRemoteNotificationsWithDeviceToken: deviceToken)
  }
}