#pragma once

#include <wfr/common/eventsystem/EventListener.h>
#include <ostream>


namespace wfr {
namespace eventsystem {

// forward declarations
class Event;
class WorkflowStatusEvent;
class ActivityStatusEvent;
class ActivityInstanceStatusEvent;

/**
 * Logs events to a std::ostream (e.g. std::cout).
 **/
class OStreamLogger: public wfr::eventsystem::EventListener {
private:
	std::ostream& oStream;

public:
	OStreamLogger(std::ostream& oStream) : oStream(oStream) {};

	virtual void notifyEvent(const std::shared_ptr<Event>& event) noexcept override;
};

} /* namespace eventsystem */
} /* namespace wfr */