MovingAverager.hpp

//
//  MovingAverager.hpp
//  HW4_R
//
//  Created by Kaloyan Vachkov on 25.05.21.
//

#ifndef MovingAverager_hpp
#define MovingAverager_hpp

#include "Subscriber.hpp"

// You are not allowed to make breaking changes to the class interface,
// but you are allowed to add additional methods/fields, as
// well as MODIFY the existing interface so as to make it
// "more correct" and more compact if possible

// MovingAverager is a type of Subscriber, which saves data
// and returns the average of the last `windowSize` number of
// data points when `read()` is called.
// Data is provided with the `signal()` method.
// Average of N numbers = sum(all numbers) / N
class MovingAverager : public Subscriber {
public:
  MovingAverager(const std::string& id,const size_t& windowSize);

  // id is a unique identifier for a Subscriber
  // Should never be changed once initialized
    
  //const std::string id;

  // windowSize specifies how many most-recent data points
  // should be saved
  // Should never be changed once initialized
  const size_t windowSize;
  
  // signal adds a new data point
  // Remember, you only need the last windowSize number of
  // data points added, older data points should be ignored
    
  //void signal(const Message&);

  // read calculates the average of the last windowSize number
  // of data points
  // returns 0 if there's no data points
  int read() const override;
};

#endif /* MovingAverager_hpp */