/*
 * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *     http://aws.amazon.com/apache2.0/
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
#ifndef VSHL_AFB_EVENT_H_
#define VSHL_AFB_EVENT_H_

#include <memory>
#include <string>

#include "interfaces/afb/IAFBApi.h"
#include "interfaces/utilities/logging/ILogger.h"

extern "C" {
#include "ctl-plugin.h"
#include <json-c/json.h>
}
 
using namespace std;

namespace vshlcapabilities {
namespace afb {
/*
 * This class encapsulates AFB Event.
 */
class AFBEventImpl : public vshlcapabilities::common::interfaces::IAFBApi::IAFBEvent {
public:
  static unique_ptr<AFBEventImpl>
  create(shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger, afb_api_t api,
         const string &eventName);

  // Destructor
  ~AFBEventImpl();

  /// { @c IAFBEvent implementation
  string getName() const override;
  bool isValid() override;
  int publishEvent(struct json_object *payload) override;
  bool subscribe(vshlcapabilities::common::interfaces::IAFBRequest &request) override;
  bool unsubscribe(vshlcapabilities::common::interfaces::IAFBRequest &request) override;
  /// @c IAFBEvent implementation }

private:
  AFBEventImpl(shared_ptr<vshlcapabilities::common::interfaces::ILogger> logger,
               afb_api_t api, const string &eventName);

  // Make the event. This is a lazy make that happens
  // usually during the subscribe stage.
  void makeEventIfNeccessary();

  // Binding API reference
  afb_api_t mAfbApi;

  // AFB Event
  afb_event_t mAfbEvent;

  // Event Name
  string mEventName;

  // Logger
  shared_ptr<vshlcapabilities::common::interfaces::ILogger> mLogger;
};

} // namespace afb
} // namespace vshl

#endif // VSHL_AFB_EVENT_H_