using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.Json;
using System.Text.Json.Serialization;
using System.Threading.Tasks;

namespace New_College.Common.Helper
{
    /// <summary>
    /// 格式化返回的时间格式
    /// </summary>
    public class DatetimeJsonConverter : JsonConverter<DateTime>
    {
        private readonly string format;
        public DatetimeJsonConverter(string _format)
        {
            format = _format;
        }
        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(format));
        }
    }
}