using Connected.Extensions;
using System.Globalization;

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

      #region --> Date converters
      public static LambdaConverter<DateTime, string> IsoDate
          => new(SetIsoDate, 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 LambdaConverter<DateTime?, string?> NullableIsoDate
            => new(SetNullableIsoDate, 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
   }
}