FISLib_Old/Vinno.vCloud.Common.FIS/AfterSales/Converters/NameItemSettingInfoDTOListConverter.cs

using System;
using System.Collections.Generic;
using System.Text.Json;
using System.Text.Json.Serialization;
using WingInterfaceLibrary.DTO.Device;

namespace Vinno.vCloud.Common.FIS.AfterSales.Converters
{
    internal class NameItemSettingInfoDTOListConverter : JsonConverter<List<NameItemSettingInfoDTO>>
    {
        public override bool CanConvert(Type typeToConvert)
        {
            if (!typeToConvert.IsGenericType)
            {
                return false;
            }
            if (typeToConvert.GetGenericTypeDefinition() != typeof(List<>))
            {
                return false;
            }
            return typeToConvert.GetGenericArguments()[0] == typeof(NameItemSettingInfoDTO);
        }

        public override List<NameItemSettingInfoDTO> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            if (reader.TokenType != JsonTokenType.StartArray)
            {
                throw new JsonException();
            }
            List<NameItemSettingInfoDTO> list = null;
            while (reader.Read())
            {
                if (reader.TokenType == JsonTokenType.EndArray)
                {
                    return list;
                }
                if (reader.TokenType == JsonTokenType.StartObject)
                {
                    var nameItemDTO = JsonSerializer.Deserialize<NameItemSettingInfoDTO>(ref reader, options);
                    if (list == null)
                    {
                        list = new List<NameItemSettingInfoDTO>();
                    }
                    if (nameItemDTO != null)
                    {
                        list.Add(nameItemDTO);
                    }
                }
            }
            throw new JsonException();
        }

        public override void Write(Utf8JsonWriter writer, List<NameItemSettingInfoDTO> value, JsonSerializerOptions options)
        {
            if (value != null)
            {
                writer.WriteStartArray();
                foreach (var item in value)
                {
                    JsonSerializer.Serialize(writer, item, options);
                }
                writer.WriteEndArray();
            }
            else
            {
                writer.WriteNullValue();
            }
        }
    }
}