/**
 * @file	efi_gpio.h
 * @brief	EFI-related GPIO code
 *
 *
 * @date Sep 26, 2014
 * @author Andrey Belomutskiy, (c) 2012-2020
 */

#pragma once

#include "global.h"
#include "io_pins.h"
#include "engine_configuration.h"
#include "smart_gpio.h"

void initPrimaryPins();
void initOutputPins();

#if EFI_GPIO_HARDWARE
void turnAllPinsOff(void);
#else /* EFI_GPIO_HARDWARE */
#define turnAllPinsOff() {}
#endif /* EFI_GPIO_HARDWARE */

// Used if you want a function to be virtual only for unit testing purposes
#if EFI_UNIT_TEST
#define TEST_VIRTUAL virtual
#else
#define TEST_VIRTUAL
#endif

#ifdef __cplusplus
/**
 * @brief   Single output pin reference and state
 */
class OutputPin {
public:
	OutputPin();
	/**
	 * initializes pin & registers it in pin repository
	 * outputMode being a pointer allow us to change configuration (for example invert logical pin) in configuration and get resuts applied
	 * away, or at least I hope that's why
	 */
	void initPin(const char *msg, brain_pin_e brainPin, const pin_output_mode_e *outputMode, bool forceInitWithFatalError = false);
	/**
	 * same as above, with DEFAULT_OUTPUT mode
	 */
	void initPin(const char *msg, brain_pin_e brainPin);

	/**
	 * dissociates pin from this output and un-registers it in pin repository
	 */
	void deInit();

	bool isInitialized();

	bool getAndSet(int logicValue);
	TEST_VIRTUAL void setValue(int logicValue);
	void toggle();
	bool getLogicValue() const;

#if EFI_GPIO_HARDWARE
	ioportid_t port = 0;
	uint8_t pin = 0;
#endif /* EFI_GPIO_HARDWARE */

#if EFI_UNIT_TEST
	int unitTestTurnedOnCounter = 0;
#endif

	brain_pin_e brainPin = Gpio::Unassigned;

#if (EFI_GPIO_HARDWARE && (BOARD_EXT_GPIOCHIPS > 0))
	/* used for external pins */
	bool ext = false;
#endif /* EFI_GPIO_HARDWARE */

	int8_t currentLogicValue = INITIAL_PIN_STATE;
	/**
	 * we track current pin status so that we do not touch the actual hardware if we want to write new pin bit
	 * which is same as current pin value. This maybe helps in case of status leds, but maybe it's a total over-engineering
	 */
private:
	// todo: inline this method?
	void setDefaultPinState(const pin_output_mode_e *defaultState);
	void setOnchipValue(int electricalValue);

	// 4 byte pointer is a bit of a memory waste here
	const pin_output_mode_e *modePtr = nullptr;
};

/**
 * OutputPin which is reported on Engine Sniffer
 */
class NamedOutputPin : public virtual OutputPin {
public:
	NamedOutputPin();
	explicit NamedOutputPin(const char *name);
	void setHigh();
	void setLow();
	const char *getName() const;
	const char *getShortName() const;
	/**
	 * @return true if pin was stopped
	 */
	bool stop();
	// todo: char pointer is a bit of a memory waste here, we can reduce RAM usage by software-based getName() method
	const char *name = nullptr;
	/**
	 * rusEfi Engine Sniffer protocol uses these short names to reduce bytes usage
	 */
	const char *shortName = nullptr;
};

class InjectorOutputPin final : public NamedOutputPin {
public:
	InjectorOutputPin();
	void reset();

	void open(efitick_t nowNt);
	void close(efitick_t nowNt);

	int8_t getOverlappingCounter() const { return overlappingCounter; }

	// todo: re-implement this injectorIndex via address manipulation to reduce memory usage?
	int8_t injectorIndex;

private:
	int8_t overlappingCounter;
};

class IgnitionOutputPin : public NamedOutputPin {
public:
	IgnitionOutputPin();
	void reset();
	int signalFallSparkId;
	bool outOfOrder; // https://sourceforge.net/p/rusefi/tickets/319/
};

/**
 * OutputPin with semi-automated init/deinit on configuration change
 */
class RegisteredOutputPin : public virtual OutputPin {
public:
	RegisteredOutputPin(const char *registrationName, short pinOffset, short pinModeOffset);
	void init();
	void unregister();
	RegisteredOutputPin *next;
	const char *registrationName;
private:
	short pinOffset;
	short pinModeOffset;
	bool isPinConfigurationChanged();
};

class RegisteredNamedOutputPin : public RegisteredOutputPin, public NamedOutputPin {
public:
		RegisteredNamedOutputPin(const char *name, short pinOffset, short pinModeOffset);
};

class EnginePins {
public:
	EnginePins();
	void startPins();
	void reset();
	static void debug();
	bool stopPins();
	void unregisterPins();
	RegisteredOutputPin mainRelay;
	/**
	 * High Pressure Fuel Pump valve control
	 */
	RegisteredNamedOutputPin hpfpValve;
	// this one cranks engine
	RegisteredOutputPin starterControl;
	// this one prevents driver from cranking engine
	RegisteredOutputPin starterRelayDisable;

	RegisteredOutputPin fanRelay;
	RegisteredOutputPin fanRelay2;

	// see acRelayPin
	RegisteredOutputPin acRelay;
	RegisteredOutputPin fuelPumpRelay;
	OutputPin o2heater;
	/**
	 * brain board RED LED by default
	 */
	OutputPin errorLedPin;
	OutputPin communicationLedPin; // blue LED on brain board by default
	OutputPin warningLedPin; // orange LED on brain board by default
	OutputPin runningLedPin; // green LED on brain board by default

	OutputPin debugTriggerSync;
	RegisteredOutputPin boostPin;
	RegisteredOutputPin idleSolenoidPin;
	RegisteredOutputPin secondIdleSolenoidPin;
	RegisteredOutputPin alternatorPin;
	/**
	 * this one is usually on the gauge cluster, not on the ECU
	 */
	RegisteredOutputPin checkEnginePin;

	RegisteredNamedOutputPin tachOut;

	RegisteredOutputPin triggerDecoderErrorPin;
	OutputPin sdCsPin;
	OutputPin accelerometerCs;

	InjectorOutputPin injectors[MAX_CYLINDER_COUNT];
	IgnitionOutputPin coils[MAX_CYLINDER_COUNT];
	IgnitionOutputPin trailingCoils[MAX_CYLINDER_COUNT];
	NamedOutputPin auxValve[AUX_DIGITAL_VALVE_COUNT];
	OutputPin tcuSolenoids[TCU_SOLENOID_COUNT];
	OutputPin tcuTccOnoffSolenoid;
	OutputPin tcuTccPwmSolenoid;
	OutputPin tcuPcSolenoid;
	OutputPin tcu32Solenoid;

private:
	void startInjectionPins();
	void startIgnitionPins();
	void startAuxValves();

	void stopInjectionPins();
	void stopIgnitionPins();
	void stopAuxValves();
};

#endif /* __cplusplus */

/**
 * it's a macro to be sure that stack is not used
 * @return 0 for OM_DEFAULT and OM_OPENDRAIN
 */

#define getElectricalValue0(mode) ((mode) == OM_INVERTED || (mode) == OM_OPENDRAIN_INVERTED)

/**
 * it's a macro to be sure that stack is not used
 * @return 1 for OM_DEFAULT and OM_OPENDRAIN
 */
#define getElectricalValue1(mode) ((mode) == OM_DEFAULT || (mode) == OM_OPENDRAIN)

#define getElectricalValue(logicalValue, mode) \
	(logicalValue ? getElectricalValue1(mode) : getElectricalValue0(mode))

#if EFI_GPIO_HARDWARE

EXTERNC ioportmask_t getHwPin(const char *msg, brain_pin_e brainPin);
EXTERNC ioportid_t getHwPort(const char *msg, brain_pin_e brainPin);
const char *portname(ioportid_t GPIOx);

#endif /* EFI_GPIO_HARDWARE */

void printSpiConfig(const char *msg, spi_device_e device);
brain_pin_e parseBrainPin(const char *str);

extern EnginePins enginePins;