import Foundation
import MusubiCore
import Observation
import ServiceManagement
import SystemConfiguration

/// Persistent app settings (UserDefaults).
@MainActor @Observable
final class AppSettings {
    var role: Role {
        didSet { UserDefaults.standard.set(role.rawValue, forKey: "role") }
    }
    /// BSD name of the technical network interface, e.g. "en7".
    var interfaceName: String {
        didSet { UserDefaults.standard.set(interfaceName, forKey: "interfaceName") }
    }

    /// Name other Macs see (the computer name, e.g. "Mac mini von Samuel").
    let machineName: String = (SCDynamicStoreCopyComputerName(nil, nil) as String?) ?? Host.current().localizedName ?? "Musubi"

    init() {
        role = Role(rawValue: UserDefaults.standard.string(forKey: "role") ?? "") ?? .control
        interfaceName = UserDefaults.standard.string(forKey: "interfaceName") ?? "en0"
    }

    var launchAtLogin: Bool {
        get { SMAppService.mainApp.status == .enabled }
        set {
            do {
                if newValue { try SMAppService.mainApp.register() } else { try SMAppService.mainApp.unregister() }
            } catch {
                Log.ndi.error("Login item: \(error.localizedDescription, privacy: .public)")
            }
        }
    }
}