import SwiftUI

@main
struct NightlyApp: App {
    @StateObject private var appState = AppState()
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate

    var body: some Scene {
        WindowGroup {
            RootView()
                .environmentObject(appState)
                .preferredColorScheme(.dark)
        }
    }
}

// MARK: - App Delegate

class AppDelegate: NSObject, UIApplicationDelegate, UNUserNotificationCenterDelegate {

    func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil
    ) -> Bool {
        UNUserNotificationCenter.current().delegate = self
        return true
    }

    // ⚠️  Push Notifications: erfordert bezahlten Apple Developer Account ($99/Jahr)
    // Ohne Developer-Account kann dieser Code nicht getestet werden (nur Simulator ohne Pushs)
    func application(
        _ application: UIApplication,
        didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data
    ) {
        let token = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
        Task { try? await supabase.savePushToken(token) }
    }

    func application(
        _ application: UIApplication,
        didFailToRegisterForRemoteNotificationsWithError error: Error
    ) {
        print("APNs Registrierung fehlgeschlagen:", error.localizedDescription)
        // Häufige Ursache: kein bezahlter Developer Account
    }

    func userNotificationCenter(
        _ center: UNUserNotificationCenter,
        willPresent notification: UNNotification,
        withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void
    ) {
        completionHandler([.banner, .sound, .badge])
    }

    func userNotificationCenter(
        _ center: UNUserNotificationCenter,
        didReceive response: UNNotificationResponse,
        withCompletionHandler completionHandler: @escaping () -> Void
    ) {
        NotificationCenter.default.post(name: .nightlyPingReceived, object: nil)
        completionHandler()
    }
}

extension Notification.Name {
    static let nightlyPingReceived = Notification.Name("nightlyPingReceived")
}