using System.IO.Compression;
using System.Text;

namespace ScrapperAPI.Utils;

public static class CompressionUtils
{
    public static byte[] GzipCompressUtf8(string text, CompressionLevel level = CompressionLevel.Fastest)
    {
        var inputBytes = Encoding.UTF8.GetBytes(text);

        using var output = new MemoryStream();
        using (var gzip = new GZipStream(output, level, leaveOpen: true))
        {
            gzip.Write(inputBytes, 0, inputBytes.Length);
        }

        return output.ToArray();
    }

    public static string GzipDecompressUtf8(byte[] gzBytes)
    {
        using var input = new MemoryStream(gzBytes);
        using var gzip = new GZipStream(input, CompressionMode.Decompress);
        using var reader = new StreamReader(gzip, Encoding.UTF8);

        return reader.ReadToEnd();
    }
}