import AVFoundation
import Intents
import SwiftUI
import UIKit

final class AppDelegate: NSObject, UIApplicationDelegate {
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
        try? AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, policy: .longFormAudio)
        MainActor.assumeIsolated { _ = AppGraph.shared }
        return true
    }

    /// Phone windows go to SwiftUI; CarPlay gets its own scene delegate.
    func application(_ application: UIApplication, configurationForConnecting session: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        if session.role == .carTemplateApplication {
            let c = UISceneConfiguration(name: "CarPlay", sessionRole: session.role)
            c.delegateClass = CarPlayScene.self
            return c
        }
        return UISceneConfiguration(name: "Phone", sessionRole: session.role)
    }

    /// Siri: "Play <album> on Stemify".
    func application(_ application: UIApplication, handlerFor intent: INIntent) -> Any? {
        intent is INPlayMediaIntent ? PlayMediaHandler() : nil
    }
}

@main
struct StemifyApp: App {
    @UIApplicationDelegateAdaptor(AppDelegate.self) private var delegate
    @Environment(\.scenePhase) private var phase

    var body: some Scene {
        WindowGroup {
            RootView()
        }
        .onChange(of: phase) { _, p in
            AppActivity.setPhone(p != .background)
            guard p == .active else { return }
            AppGraph.shared.eq.refreshRoute()
            // Keep downloaded playlists in step with the server, like Plexamp.
            Task { await AppGraph.shared.downloads.refresh() }
        }
    }
}