class Restforce::Middleware::RaiseError

def message(env)
  "#{env[:body].first['errorCode']}: #{env[:body].first['message']}"
end

def on_complete(env)
  case env[:status]
  when 404
    raise Faraday::Error::ResourceNotFound, message(env)
  when 401
    raise Restforce::UnauthorizedError, message(env)
  when 400...600
    raise Faraday::Error::ClientError, message(env)
  end
end