import AppKit
import Combine
import SwiftUI

@MainActor
final class AppModel: ObservableObject {
    enum Section: String, CaseIterable, Identifiable, Hashable {
        case library = "SD-Karte"
        case cards = "NFC-Karten"
        case tonuino = "TonUINO"
        case settings = "Einstellungen"
        var id: String { rawValue }
        var icon: String {
            switch self {
            case .library: "sdcard"
            case .cards: "wave.3.right"
            case .tonuino: "slider.horizontal.3"
            case .settings: "gearshape"
            }
        }
    }

    @Published var section: Section = .library
    @Published var library = LibraryModel()
    @Published var cards = CardModel()
    @Published var status = "Bereit"
    @Published var errorMessage: String?
    @Published var showError = false
    private var childSubscriptions = Set<AnyCancellable>()

    init() {
        library.objectWillChange.sink { [weak self] _ in self?.objectWillChange.send() }.store(in: &childSubscriptions)
        cards.objectWillChange.sink { [weak self] _ in self?.objectWillChange.send() }.store(in: &childSubscriptions)
    }

    func report(_ error: Error) {
        errorMessage = error.localizedDescription
        showError = true
    }
}