sharedpref.kt

enum class Theme(val storageKey: String) {
    LIGHT("light"),
    DARK("dark"),
    SYSTEM("system")
}

private const val PREF_DARK_MODE = "pref_dark_mode"

private val prefs: SharedPreferences = context.getSharedPreferences("PREFERENCES_NAME", Context.MODE_PRIVATE)

var theme: String
    get() = prefs.getString(PREF_DARK_MODE, SYSTEM.storageKey) ?: SYSTEM.storageKey
    set(value) {
        prefs.edit {
            putString(PREF_DARK_MODE, value)
        }
    }