/*
 * @file	trigger_central.h
 *
 * @date Feb 23, 2014
 * @author Andrey Belomutskiy, (c) 2012-2017
 */

#ifndef TRIGGER_CENTRAL_H_
#define TRIGGER_CENTRAL_H_

#include "rusefi_enums.h"
#include "listener_array.h"
#include "trigger_decoder.h"

class Engine;
typedef void (*ShaftPositionListener)(trigger_event_e signal, uint32_t index DECLARE_ENGINE_PARAMETER_SUFFIX);

#define HAVE_CAM_INPUT() engineConfiguration->camInput != GPIO_UNASSIGNED

#define HW_EVENT_TYPES 6

/**
 * Maybe merge TriggerCentral and TriggerState classes into one class?
 * Probably not: we have an instance of TriggerState which is used for trigger initialization,
 * also composition probably better than inheritance here
 */
class TriggerCentral {
public:
	TriggerCentral();
	void addEventListener(ShaftPositionListener handler, const char *name, Engine *engine);
	void handleShaftSignal(trigger_event_e signal DECLARE_ENGINE_PARAMETER_SUFFIX);
	int getHwEventCounter(int index);
	void resetCounters();
	void resetAccumSignalData();
	bool noiseFilter(efitick_t nowNt, trigger_event_e signal DECLARE_ENGINE_PARAMETER_SUFFIX);
	TriggerStateWithRunningStatistics triggerState;
	efitick_t nowNt = 0;
	angle_t vvtPosition = 0;
	/**
	 * this is similar to TriggerState#startOfCycleNt but with the crank-only sensor magic
	 */
	efitick_t timeAtVirtualZeroNt = 0;

	TriggerShape triggerShape;

	efitick_t previousVvtCamTime = 0;
	efitick_t previousVvtCamDuration = 0;

	volatile efitime_t previousShaftEventTimeNt;
private:
	IntListenerArray<15> triggerListeneres;
	int hwEventCounters[HW_EVENT_TYPES];
	
	// Used by 'useNoiselessTriggerDecoder', see handleShaftSignal()
	efitick_t lastSignalTimes[HW_EVENT_TYPES];
	efitick_t accumSignalPeriods[HW_EVENT_TYPES];
	efitick_t accumSignalPrevPeriods[HW_EVENT_TYPES];
};

void triggerInfo(void);
efitime_t getCrankEventCounter(DECLARE_ENGINE_PARAMETER_SIGNATURE);
void hwHandleShaftSignal(trigger_event_e signal);
void hwHandleVvtCamSignal(trigger_value_e front DECLARE_ENGINE_PARAMETER_SUFFIX);

void initTriggerCentral(Logging *sharedLogger);
void printAllCallbacksHistogram(void);
void printAllTriggers();

void addTriggerEventListener(ShaftPositionListener handler, const char *name, Engine *engine);
int isSignalDecoderError(void);
void resetMaxValues();

void onConfigurationChangeTriggerCallback(engine_configuration_s *previousConfiguration DECLARE_ENGINE_PARAMETER_SUFFIX);
bool checkIfTriggerConfigChanged(DECLARE_ENGINE_PARAMETER_SIGNATURE);
bool isTriggerConfigChanged(DECLARE_ENGINE_PARAMETER_SIGNATURE);

#endif /* TRIGGER_CENTRAL_H_ */