TimeSpanToStringConverter.cs

// Licensed to Elasticsearch B.V under one or more agreements.
// Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
// See the LICENSE file in the project root for more information.

using System;
using Newtonsoft.Json;

namespace Elastic.Clients.Elasticsearch.JsonNetSerializer.Converters
{
	/// <summary>
	/// Included for compatibility reasons
	/// </summary>
	internal class TimeSpanToStringConverter : JsonConverter
	{
		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
		{
			if (value == null)
				writer.WriteNull();
			else
			{
				var timeSpan = (TimeSpan)value;
				writer.WriteValue(timeSpan.Ticks);
			}
		}

		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
		{
			switch (reader.TokenType)
			{
				case JsonToken.Null: return null;
				case JsonToken.String: return TimeSpan.Parse((string)reader.Value);
				case JsonToken.Integer: return new TimeSpan((long)reader.Value);
			}
			throw new JsonSerializationException($"Cannot convert token of type {reader.TokenType} to {objectType}.");
		}

		public override bool CanConvert(Type objectType) => objectType == typeof(TimeSpan) || objectType == typeof(TimeSpan?);
	}
}