continuity/Wonderking/Utils/ByteArrayConverter.cs

// Licensed to Timothy Schenk under 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);
        }
    }
}