import SwiftUI
#if os(iOS)
import AVFAudio
#endif

@main
struct Audiobookshelf_swiftApp: App {
    @State private var appState = AppState()

    init() {
        configureImageCache()
        #if os(iOS)
        configureAudioSession()
        #endif
    }

    /// Increases the shared URLCache so AsyncImage covers persist across renders
    /// and app launches. Default capacity is tiny (~4 MB / 20 MB).
    private func configureImageCache() {
        let memoryCapacity = 50 * 1024 * 1024      // 50 MB
        let diskCapacity   = 500 * 1024 * 1024     // 500 MB
        URLCache.shared = URLCache(
            memoryCapacity: memoryCapacity,
            diskCapacity: diskCapacity,
            diskPath: "covers"
        )
    }

    var body: some Scene {
        #if os(macOS)
        WindowGroup {
            ContentView()
                .environment(appState)
        }
        .windowResizability(.contentSize)

        Settings {
            SettingsView()
                .environment(appState)
        }
        #else
        WindowGroup {
            ContentView()
                .environment(appState)
        }
        #endif
    }

    #if os(iOS)
    private func configureAudioSession() {
        // Nur die Kategorie registrieren — setActive(true) passiert erst in play(),
        // damit beim App-Start keine laufende Fremd-Wiedergabe unterbrochen wird.
        try? AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, options: [])
    }
    #endif
}