using Newtonsoft.Json;

namespace YLErp.Converter2
{
    public class IsoDateTimeConverter : JsonConverter<DateTime>
    {
        public IsoDateTimeConverter() { }
        public IsoDateTimeConverter(string format)
        {
            DateTimeFormat = format;
        }
        public string DateTimeFormat { get; set; } = "yyyy/MM/dd";
        public override DateTime ReadJson(JsonReader reader, Type objectType, DateTime existingValue, bool hasExistingValue, JsonSerializer serializer)
        {
            var value = reader.Value?.ToString();
            if (string.IsNullOrEmpty(value))
            {
                return existingValue;
            }
            else
            {
                if (DateTime.TryParse(value, out var date))
                {
                    return date;
                }
                else
                {
                    return existingValue;
                }
            }
        }


        public override void WriteJson(JsonWriter writer, DateTime value, JsonSerializer serializer)
        {
            writer.WriteValueAsync(value.ToString(DateTimeFormat)).Wait();
        }
    }
}