using System;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace Common.Utils
{
    public static class DateTimeTools
    {

        public static DateTime GetDateTimeNow()
        {
          return   DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
        }
       
        public static int GetTimeDiffDays(DateTime start, DateTime end)
        {
            string result = string.Empty;
            TimeSpan ts1 = new TimeSpan(start.Ticks);
            TimeSpan ts2 = new TimeSpan(end.Ticks);
            TimeSpan ts = ts1.Subtract(ts2).Duration();
            return ts.Days;
        }
        public class DatetimeJsonConverter : JsonConverter<DateTime>
        {
            public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
            {
                if (reader.TokenType == JsonTokenType.String)
                {
                    if (DateTime.TryParse(reader.GetString(), out DateTime date))
                        return date;
                }
                return reader.GetDateTime();
            }

            public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
            {
                writer.WriteStringValue(value.ToString("yyyy-MM-dd HH:mm:ss"));
            }
        }
    }
 
}