#pragma once

#include <chrono>

#include <string>

#include <vector>

#include "envoy/common/pure.h"

namespace Envoy {

namespace Extensions {

namespace Http {

namespace InjectedCredentials {

namespace OAuth2 {

/**

 * Callback interface to enable the OAuth client to trigger actions upon completion of an

 * asynchronous HTTP request/response.

 */

class FilterCallbacks {

public:

  enum class FailureReason {

    StreamReset,

    BadToken,

    BadResponseCode,

  };

  virtual void onGetAccessTokenSuccess(const std::string& access_token,

                                       std::chrono::seconds expires_in) PURE;

  virtual void onGetAccessTokenFailure(FailureReason) PURE;

};

} // namespace OAuth2

} // namespace InjectedCredentials

} // namespace Http

} // namespace Extensions

} // namespace Envoy