import Foundation
import Observation

@Observable
final class AppPreferences {
    // Calendar.weekday constants: 1 = Sunday, 2 = Monday … 7 = Saturday
    var themeMode: ThemeMode = ThemeMode(rawValue: UserDefaults.standard.string(forKey: "pref.themeMode") ?? "system") ?? .system {
        didSet { UserDefaults.standard.set(themeMode.rawValue, forKey: "pref.themeMode") }
    }

    var languageCode: String = UserDefaults.standard.string(forKey: "pref.languageCode") ?? "ko" {
        didSet { UserDefaults.standard.set(languageCode, forKey: "pref.languageCode") }
    }

    var weekStartDay: Int = (UserDefaults.standard.object(forKey: "pref.weekStartDay") as? Int) ?? 2 {
        didSet { UserDefaults.standard.set(weekStartDay, forKey: "pref.weekStartDay") }
    }

    var dayStartHour: Int = (UserDefaults.standard.object(forKey: "pref.dayStartHour") as? Int) ?? 0 {
        didSet { UserDefaults.standard.set(dayStartHour, forKey: "pref.dayStartHour") }
    }

    var dayStartMinute: Int = (UserDefaults.standard.object(forKey: "pref.dayStartMinute") as? Int) ?? 0 {
        didSet { UserDefaults.standard.set(dayStartMinute, forKey: "pref.dayStartMinute") }
    }
}