#pragma once

#include <memory>

#include "envoy/config/route/v3/route.pb.h"

#include "envoy/http/filter.h"

#include "envoy/rds/route_config_provider.h"

#include "envoy/router/router.h"

namespace Envoy {

namespace Router {

/**

 * A provider for constant route configurations.

 */

class RouteConfigProvider : public Rds::RouteConfigProvider {

public:

  /**

   * Same purpose as Rds::RouteConfigProvider::config()

   * but the return is downcasted to proper type.

   * @return downcasted ConfigConstSharedPtr from Rds::ConfigConstSharedPtr

   */

  virtual ConfigConstSharedPtr configCast() const PURE;

  /**

   * Callback used to request an update to the route configuration from the management server.

   * @param for_domain supplies the domain name that virtual hosts must match on

   * @param thread_local_dispatcher thread-local dispatcher

   * @param route_config_updated_cb callback to be called when the configuration update has been

   * propagated to worker threads

   */

  virtual void requestVirtualHostsUpdate(

      const std::string& for_domain, Event::Dispatcher& thread_local_dispatcher,

      std::weak_ptr<Http::RouteConfigUpdatedCallback> route_config_updated_cb) PURE;

};

using RouteConfigProviderPtr = std::unique_ptr<RouteConfigProvider>;

using RouteConfigProviderSharedPtr = std::shared_ptr<RouteConfigProvider>;

} // namespace Router

} // namespace Envoy