#pragma once

#include "envoy/extensions/filters/network/http_connection_manager/v3/http_connection_manager.pb.h"

#include "envoy/http/codes.h"

#include "envoy/http/header_map.h"

#include "envoy/server/filter_config.h"

#include "source/common/stream_info/stream_info_impl.h"

namespace Envoy {

namespace LocalReply {

class LocalReply {

public:

  /**

   * rewrite the response status code, body and content_type.

   * @param request_headers supplies the information about request headers required by filters.

   * @param stream_info supplies the information about streams required by filters.

   * @param code status code.

   * @param body response body.

   * @param content_type response content_type.

   */

  virtual void rewrite(const Http::RequestHeaderMap* request_headers,

                       Http::ResponseHeaderMap& response_headers,

                       StreamInfo::StreamInfo& stream_info, Http::Code& code, std::string& body,

                       absl::string_view& content_type) const PURE;

};

using LocalReplyPtr = std::unique_ptr<LocalReply>;

/**

 * Access log filter factory that reads from proto.

 */

class Factory {

public:

  /**

   * Create a LocalReply object from ProtoConfig

   */

  static absl::StatusOr<LocalReplyPtr>

  create(const envoy::extensions::filters::network::http_connection_manager::v3::LocalReplyConfig&

             config,

         Server::Configuration::FactoryContext& context);

  /**

   * Create a default LocalReply object with empty config.

   * It is used at places without Server::Configuration::FactoryContext.

   */

  static LocalReplyPtr createDefault();

};

} // namespace LocalReply

} // namespace Envoy