continuity/Wonderking/Utils/ByteArrayConverter.cs

// Copyright (c) 2023 Timothy Schenk. Subject to the GNU AGPL Version 3 License.

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

namespace Wonderking.Utils;

public class ByteArrayConverter : JsonConverter<byte[]>
{
    public override byte[] Read(
        ref Utf8JsonReader reader,
        Type typeToConvert,
        JsonSerializerOptions options)
    {
        var hexData = reader.GetString();
        if (hexData != null)
        {
            return hexData.Split('-').Select(b => Convert.ToByte(b, 16)).ToArray();
        }

        throw new JsonException("Hex string is null.");
    }

    public override void Write(
        Utf8JsonWriter writer,
        byte[]? value,
        JsonSerializerOptions options)
    {
        if (value == null)
        {
            writer.WriteNullValue();
        }
        else
        {
            var hexData = BitConverter.ToString(value).Replace("-", string.Empty);
            writer.WriteStringValue(hexData);
        }
    }
}