using System.Globalization;

namespace Connected
{
   public static class Converters
   {
      public static CultureInfo DefaultCulture = CultureInfo.CurrentUICulture;

      #region --> Date converters
      public static Converter<DateTime> IsoDate
          => new()
          { SetFunc = SetIsoDate, GetFunc = GetIsoDate };

      private static DateTime GetIsoDate(string value)
      {
         if (DateTime.TryParse(value, out var dateTime))
            return dateTime;
         return DateTime.MinValue;
      }

      private static string SetIsoDate(DateTime value)
      {
         return value.ToIsoDateString();
      }

      public static Converter<DateTime?> NullableIsoDate
          => new()
          { SetFunc = SetNullableIsoDate, GetFunc = GetNullableIsoDate };

      private static DateTime? GetNullableIsoDate(string value)
      {
         if (DateTime.TryParse(value, out var dateTime))
            return dateTime;
         return null;
      }

      private static string SetNullableIsoDate(DateTime? value)
      {
         return value.ToIsoDateString();
      }

      public static DateConverter DateFormat(string format)
      {
         format ??= "yyyy-MM-dd";
         return new DateConverter(format);
      }

      public static DateConverter DateFormat(string format, CultureInfo culture)
      {
         return new DateConverter(format) { Culture = culture };
      }

      #endregion
   }
}