/*
 * Copyright (c) 2019 Samsung Electronics Co., Ltd. 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.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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 __EVENT_RECORDER_H__
#define __EVENT_RECORDER_H__

#include <map>
#include <memory>

#include <ostream>

struct Event
{
  std::string name;
  std::string ph; /* REQUIRED */
  std::string ts; /* REQUIRED */
};

struct DurationEvent : public Event
{
  // TO BE FILLED
};

struct CounterEvent : public Event
{
  std::map<std::string, std::string> values;
};

//
// Record Event as Chrome Trace Event File Format
//
// Refrence: https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/edit
//
class EventRecorder
{
public:
  EventRecorder(std::ostream &os) : _os(os)
  {
    // DO NOTHING
  }

public:
  void init();

public:
  void emit(const DurationEvent &evt);
  void emit(const CounterEvent &evt);

public:
  void fini();

private:
  std::ostream &_os;
};

#endif // __EVENT_RECORDER_H__