class Github::Request::OAuth2

def call(env)
  # Extract parameters from the query
  params = { ACCESS_TOKEN => @token }.update query_params(env[:url])
  if token = params[ACCESS_TOKEN] and !token.empty?
    env[:url].query = build_query params
    env[:request_headers].merge!(AUTH_HEADER => "Token token=\"#{token}\"")
  end
  @app.call env
end