// ── ChronoMind App Entry Point ─────────────────────────────────

import SwiftUI
import WidgetKit

@main
struct ChronoMindApp: App {
    @StateObject private var timerStore = TimerStore()
    @StateObject private var notificationManager = CMNotificationManager.shared
    @StateObject private var gamification = GamificationStore.shared
    @StateObject private var authService = CMAuthService.shared
    @Environment(\.scenePhase) private var scenePhase

    var body: some Scene {
        WindowGroup {
            Group {
                if authService.isLoggedIn {
                    ZStack {
                        ContentView()
                            .environmentObject(timerStore)
                            .environmentObject(notificationManager)
                            .environmentObject(gamification)
                            .preferredColorScheme(.dark)
                            .task {
                                notificationManager.registerCategories()
                                await notificationManager.requestPermission()
                            }
                            .onReceive(NotificationCenter.default.publisher(for: .chronoMindTimersDidChange)) { _ in
                                WidgetCenter.shared.reloadAllTimelines()
                            }

                        // Badge celebration overlay
                        if let badge = gamification.newBadge {
                            BadgeCelebrationOverlay(badge: badge) {
                                gamification.clearNewBadge()
                            }
                            .transition(.opacity)
                            .zIndex(100)
                        }
                    }
                    .animation(.easeInOut, value: gamification.newBadge != nil)
                } else {
                    CMLoginView(authService: authService)
                }
            }
            .onChange(of: scenePhase) { _, newPhase in
                switch newPhase {
                case .active:
                    CMTelemetryService.shared.start()
                    FeatureFlagService.shared.start(userId: authService.currentUser?.id)
                    CMTelemetryService.shared.trackEvent("info", module: "app", name: "app_foregrounded")
                case .background:
                    CMTelemetryService.shared.trackEvent("info", module: "app", name: "app_backgrounded")
                    CMTelemetryService.shared.flush()
                    FeatureFlagService.shared.stop()
                default:
                    break
                }
            }
        }
    }
}