FindJarPackages.cs

async Task Main()
{
    var dir = @"C:\Work\work\nsrj\trunk\lib";
    var http = new HttpClient { BaseAddress = new Uri("https://search.maven.org") };
    var deps = new StringBuilder();
    foreach (var jar in Directory.EnumerateFiles(dir, @"*.jar", SearchOption.AllDirectories))
    {
        jar.Dump();
        var hash = Sha1(File.ReadAllBytes(jar));
        var url = $"https://search.maven.org/solrsearch/select?q=1:%20{hash}&start=0&rows=20";
        var data = await http.GetStringAsync(url);
        var json = JObject.Parse(data);
        var docs = (JArray)json["response"]["docs"];
        var pref = docs.Count > 1 ? "//" : string.Empty;
        foreach(var doc in docs)
        {
            var meta = new JarManifest
            {
                Group = (string)doc["g"],
                Name = (string)doc["a"],
                Version = (string)doc["v"],
            };
            meta.ToString().Dump();
            deps.Append(pref).AppendLine(meta.ToString());
        }
        if(docs.Count < 1 )
        {
            "packages not found".Dump();
            deps.Append(pref).Append(new JarManifest().ToString()).Append("// ").AppendLine(jar);
        }
        Environment.NewLine.Dump();
    }
    deps.ToString().Dump();
}


public static string Sha1(byte[] inputBytes)
{
    byte[] hash = ((HashAlgorithm)CryptoConfig.CreateFromName("SHA1")).ComputeHash(inputBytes);
    return BitConverter.ToString(hash)
       .Replace("-", string.Empty)
       .ToLower();
}


class JarManifest
{
    public string Group { get; set; }
    public string Name { get; set; }
    public string Version { get; set; }

    public override string ToString() => $"compile group: '{Group}', name: '{Name}', version: '{Version}'";
}