VersionConverter.cs

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using Newtonsoft.Json;
using System;
using Tgstation.Server.Api;

namespace Tgstation.Server.Host.Components.Interop.Converters
{
    sealed class VersionConverter : JsonConverter
    {
        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            if (value == null)
            {
                writer.WriteNull();
            }
            else if (value is Version version)
            {
                writer.WriteValue(version.Semver().ToString());
            }
            else
            {
                throw new ArgumentException("Expected Version object!", nameof(value));
            }
        }

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            if (reader.TokenType == JsonToken.Null)
                return null;

            if (reader.TokenType == JsonToken.String)
            {
                try
                {
                    Version v = new Version((string)reader.Value);
                    return v.Semver();
                }
                catch (Exception ex)
                {
                    throw new JsonSerializationException($"Error parsing version string: {reader.Value}", ex);
                }
            }

            throw new JsonSerializationException(
                $"Unexpected token or value when parsing version. Token: {reader.TokenType}, Value: {reader.Value}");
        }

        public override bool CanConvert(Type objectType) => objectType == typeof(Version);
    }
}