#ifndef BSP_Q7S_GPIO_LINUXLIBGPIOIF_H_
#define BSP_Q7S_GPIO_LINUXLIBGPIOIF_H_

#include <bsp_q7s/gpio/GpioIF.h>
#include <fsfwconfig/returnvalues/classIds.h>
#include <bsp_q7s/gpio/cookies/GpioCookie.h>
#include <fsfw/objectmanager/SystemObject.h>

/**
 * @brief	This class implements the GpioIF for a linux based system. The
 * 			implementation is based on the libgpiod lib which requires linux 4.8
 * 			or higher.
 * @note	The Petalinux SDK from Xilinx supports libgpiod since Petalinux
 * 			2019.1.
 */
class LinuxLibgpioIF : public GpioIF, public SystemObject {
public:

    static const uint8_t INTERFACE_ID = CLASS_ID::LINUX_LIBGPIO_IF;

	static const ReturnValue_t CONFIGURATION_FAILURE = MAKE_RETURN_CODE(0x1);
	static const ReturnValue_t OPEN_CHIP_FAILURE = MAKE_RETURN_CODE(0x2);
	static const ReturnValue_t OPEN_LINE_FAILURE = MAKE_RETURN_CODE(0x3);
	static const ReturnValue_t REQUEST_LINE_FAILURE = MAKE_RETURN_CODE(0x4);
	static const ReturnValue_t PULLING_HIGH_FAILURE = MAKE_RETURN_CODE(0x5);

	LinuxLibgpioIF(object_id_t objectId);
	virtual ~LinuxLibgpioIF();

	ReturnValue_t initialize(CookieIF * cookie) override;
	ReturnValue_t pullHigh(gpioId_t gpioId) override;
	ReturnValue_t pullLow(gpioId_t gpioId) override;

private:

	/*Holds the information and configuration of all used GPIOs */
	GpioMap gpioMap;
	GpioMapIter gpioMapIter;

	/**
	 * @brief	This functions drives line of a GPIO specified by the GPIO ID.
	 *
	 * @param gpioId	The GPIO ID of the GPIO to drive.
	 * @param logiclevel	The logic level to set. O or 1.
	 */
	ReturnValue_t driveGpio(gpioId_t gpioId,
			unsigned int logiclevel);

	/**
	 * @brief	This function checks if GPIOs are already registered and whether
	 * 			there exists a conflict in the GPIO configuration. E.g. the
	 * 			direction.
	 *
	 * @param mapToAdd	The GPIOs which shall be added to the gpioMap.
	 *
	 * @return	RETURN_OK if successful, otherwise RETURN_FAILED
	 */
	ReturnValue_t checkForConflicts(GpioMap mapToAdd);
};

#endif /* BSP_Q7S_GPIO_LINUXLIBGPIOIF_H_ */