import UIKit
import UserNotifications

class AppDelegate: NSObject, UIApplicationDelegate {
    func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil
    ) -> Bool {
        // On-device crash/hang diagnostics. Nothing is uploaded anywhere: reports
        // stay in the app container and Apple's own pipeline is what feeds the
        // Xcode Organizer. See DiagnosticsCollector.
        DiagnosticsCollector.shared.start()

        // Request notification permissions
        requestNotificationPermissions()

        // Apple Watch bridge: activating early means the first application
        // context lands before the user raises their wrist.
        Task { @MainActor in
            WatchSyncService.shared.activate()
        }

        return true
    }

    private func requestNotificationPermissions() {
        let center = UNUserNotificationCenter.current()
        center.requestAuthorization(options: [.alert, .badge, .sound]) { granted, error in
            if let error = error {
                print("Notification permission error: \(error)")
            }
            print("Notification permission granted: \(granted)")
        }
    }

    func application(
        _ application: UIApplication,
        didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data
    ) {
        let token = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
        print("Device token: \(token)")
    }

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