using System.IO.Compression;

namespace NATS.Server.Routes;

public static class RouteCompressionCodec
{
    public static byte[] Compress(ReadOnlySpan<byte> payload)
    {
        using var output = new MemoryStream();
        using (var stream = new DeflateStream(output, CompressionLevel.Fastest, leaveOpen: true))
        {
            stream.Write(payload);
        }

        return output.ToArray();
    }

    public static byte[] Decompress(ReadOnlySpan<byte> payload)
    {
        using var input = new MemoryStream(payload.ToArray());
        using var stream = new DeflateStream(input, CompressionMode.Decompress);
        using var output = new MemoryStream();
        stream.CopyTo(output);
        return output.ToArray();
    }
}