#ifndef SAM9G20_COMIF_COOKIES_GPIO_COOKIE_H_
#define SAM9G20_COMIF_COOKIES_GPIO_COOKIE_H_

#include <fsfw/devicehandlers/CookieIF.h>
#include <bsp_q7s/gpio/GpioIF.h>
#include <fsfw/returnvalues/HasReturnvaluesIF.h>
#include <string>
#include <unordered_map>

namespace Gpio {
	enum Direction {
		IN = 0,
		OUT = 1
	};
}

/**
 * @brief	Struct containing information about the GPIO to use. This is
 * 			required by the libgpiod to access and drive a GPIO.
 * @param chipname	String of the chipname specifying the group which contains
 *  	  			the GPIO to access. E.g. gpiochip0. To detect names of
 *  	  			GPIO groups run gpiodetect on the linux command line.
 * @param lineNum	The offset of the GPIO within the GPIO group.
 * @param consumer	Name of the consumer currently accessing the GPIO.
 * @param direction	Specifies whether the GPIO should be used as in- or output.
 */
typedef struct GpioConfig {
	GpioConfig(std::string chipname_, int lineNum_, std::string consumer_,
			Gpio::Direction direction_) :
			chipname(chipname_), lineNum(lineNum_), consumer(consumer_), direction(
					direction_) {
	}
	std::string chipname;
	int lineNum;
	std::string consumer;
	Gpio::Direction direction;
} GpioConfig_t;
using GpioMap = std::unordered_map<gpioId_t, GpioConfig_t>;
using GpioMapIter = GpioMap::iterator;

/**
 * @brief   Cookie for the GpioIF. Allows the GpioIF to determine which
 * 			GPIOs to initialize and whether they should be configured as in- or
 * 			output.
 * @details	One GpioCookie can hold multiple GPIO configurations. To add a new
 * 			GPIO configuration to a GpioCookie use the GpioCookie::addGpio
 * 			function.
 *
 * @author 	J. Meier
 */
class GpioCookie: public CookieIF {
public:

	GpioCookie();

	virtual ~GpioCookie();

	void addGpio(gpioId_t gpioId, GpioConfig_t gpioConfig);
	/**
	 * @brief	Get map with registered GPIOs.
	 */
	GpioMap getGpioMap() const;

private:

	GpioMap gpioMap;
	GpioMapIter gpioMapIter;
};

#endif