import Foundation
import Observation

@Observable @MainActor
final class ThemeManager {
    static let shared = ThemeManager()

    private(set) var current: AppTheme = .default
    private static let key = "appThemeID"

    private init() {
        let saved = UserDefaults.standard.string(forKey: Self.key) ?? "default"
        current = AppTheme.all.first { $0.id == saved } ?? .default
    }

    func select(_ theme: AppTheme) {
        current = theme
        UserDefaults.standard.set(theme.id, forKey: Self.key)
    }
}