#ifndef MOVINGAVG_H
#define MOVINGAVG_H

#include <vector>
#include "RingBuffer.h"

template <typename T> class MovingAVG {

private:

	/** track the current sum of the vector's values */
	T curSum;

	/** the number of elements to average */
	int size;

	/** up to "size" elements */
	RingBuffer<T> values;

public:

	/** ctor */
	MovingAVG(const int size) : curSum(), size(size), values(size) {;}

	/** add a new value */
	void add(const T val) {

		// add new value
		//values.push_back(val);
		values.add(val);
		curSum += val;

		// too many values?
		//if ((int) values.size() > size) {
		//	curSum -= values.front();
		//	values.erase(values.begin());
		//}
		if (values.size() >= size) {
			curSum -= values.get();
		}

	}

	/** get the current average */
	T get() const {
		return curSum / values.size();
	}


	/** get the number of used entries */
	int getNumUsed() const {
		return (int) values.size();
	}

	/** get number of entries to average */
	int getSize() const {
		return size;
	}


};

#endif // MOVINGAVG_H