#ifndef _MechPowerListener_h_
#define _MechPowerListener_h_
#include <fstream>
#include "adevs.h"
#include "ElectricalModel.h"

/**
 * This listener records frequency at the generators.
 */
class MechPowerListener:
	public adevs::EventListener<adevs::PortValue<BasicEvent*> >
{
	public:
		/**
		 * The listener will record generator mechanical power from the
		 * provided ElectricalModel model. Values are recorded at most
		 * at intervals cint. Data is stored in model_name+"_freq.dat".
		 * The output data is in Hertz and measures deviation from nominal.
		 */
		MechPowerListener(ElectricalModel* model, double cint = 1E-1, std::string model_name = "");
		void outputEvent(adevs::Event<adevs::PortValue<BasicEvent*> >, double){}
		void stateChange(adevs::Atomic<adevs::PortValue<BasicEvent*> >* model, double t);
		~MechPowerListener();
	private:
		const double cint;
		std::ofstream fout;
		double t_last;
		ElectricalModel* src;
};

#endif