#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
#include <errno.h>
#include <gfamininetdev.h>

/////////////////////////////////////////////////////////////////////////////

typedef struct _GFA_MININET_DEVICE
{
	HGFADEVICE hDev;
	GFA_GENERIC_DEVICE_INTERFACE itf;
}GFA_MININET_DEVICE, *LPGFA_MININET_DEVICE;
typedef const GFA_MININET_DEVICE *LPCGFA_MININET_DEVICE;

/////////////////////////////////////////////////////////////////////////////

HMINETDEV GfaMininetDeviceOpen(LPCGFA_MININET_DEV_CFG_PARAMS pmdcp)
{
	if(pmdcp && pmdcp->itf.pfnOpen)
	{
		HGFADEVICE hDev;
		
		if((hDev = (*pmdcp->itf.pfnOpen)(pmdcp->pszDeviceName, pmdcp->pDevParams, pmdcp->nSizeDevParams)))
		{
			LPGFA_MININET_DEVICE pDev = malloc(sizeof(GFA_MININET_DEVICE));
			memset(pDev, 0, sizeof(GFA_MININET_DEVICE));
			memcpy(&pDev->itf, &pmdcp->itf, sizeof(GFA_GENERIC_DEVICE_INTERFACE));
			pDev->hDev = hDev;
			return (HMINETDEV)pDev;
		}

		return NULL;
	}

	errno = EINVAL;
	return NULL;
}

/////////////////////////////////////////////////////////////////////////////

void GfaMininetDeviceClose(HMINETDEV hDev)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnClose)
			(*pDev->itf.pfnClose)(pDev->hDev);
		free(pDev);
	}
}

/////////////////////////////////////////////////////////////////////////////

ssize_t GfaMininetDeviceGetConfigParams(HMINETDEV hDev, void *pDevCfgParams, size_t nSizeDevCfgParams)
{
	if(hDev && pDevCfgParams && nSizeDevCfgParams)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnGetConfig)
			return (*pDev->itf.pfnGetConfig)(pDev->hDev, pDevCfgParams, nSizeDevCfgParams);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

int GfaMininetDeviceSetConfigParams(HMINETDEV hDev, const void *pDevCfgParams, size_t nSizeDevCfgParams)
{
	if(hDev && pDevCfgParams && nSizeDevCfgParams)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnSetConfig)
			return (*pDev->itf.pfnSetConfig)(pDev->hDev, pDevCfgParams, nSizeDevCfgParams);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

bool GfaMininetDeviceGetTimeouts(HMINETDEV hDev, struct timeval *ptvRX, struct timeval *ptvTX)
{
	if(hDev && (ptvRX || ptvTX))
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnGetTimeouts)
			return (*pDev->itf.pfnGetTimeouts)(pDev->hDev, ptvRX, ptvTX);

		errno = EOPNOTSUPP;
		return false;
	}

	errno = EINVAL;
	return false;
}

/////////////////////////////////////////////////////////////////////////////

bool GfaMininetDeviceSetTimeouts(HMINETDEV hDev, const struct timeval *ptvRX, const struct timeval *ptvTX)
{
	if(hDev && (ptvRX || ptvTX))
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnSetTimeouts)
			return (*pDev->itf.pfnSetTimeouts)(pDev->hDev, ptvRX, ptvTX);

		errno = EOPNOTSUPP;
		return false;
	}

	errno = EINVAL;
	return false;
}

/////////////////////////////////////////////////////////////////////////////

ssize_t GfaMininetDevicePurgeRXBuffer(HMINETDEV hDev)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnPurgeRXBuffer)
			return (*pDev->itf.pfnPurgeRXBuffer)(pDev->hDev);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

ssize_t	GfaMininetDeviceReceive(HMINETDEV hDev, void *pBuf, size_t nCbToRead)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnReceive)
			return (*pDev->itf.pfnReceive)(pDev->hDev, pBuf, nCbToRead);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

ssize_t GfaMininetDeviceRead(HMINETDEV hDev, void *pBuf, size_t nCbToRead)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnRead)
			return (*pDev->itf.pfnRead)(pDev->hDev, pBuf, nCbToRead);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

ssize_t GfaMininetDevicePop(HMINETDEV hDev, uint8_t *pb)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnPop)
			return (*pDev->itf.pfnPop)(pDev->hDev, pb);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

ssize_t GfaMininetDevicePeek(HMINETDEV hDev)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnPeek)
			return (*pDev->itf.pfnPeek)(pDev->hDev);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

ssize_t GfaMininetDeviceTransmit(HMINETDEV hDev, const void *pData, size_t nCbData)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnTransmit)
			return (*pDev->itf.pfnTransmit)(pDev->hDev, pData, nCbData);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

ssize_t GfaMininetDeviceWrite(HMINETDEV hDev, const void *pData, size_t nCbData)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnWrite)
			return (*pDev->itf.pfnWrite)(pDev->hDev, pData, nCbData);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}

/////////////////////////////////////////////////////////////////////////////

ssize_t GfaMininetDevicePush(HMINETDEV hDev, uint8_t b)
{
	if(hDev)
	{
		LPGFA_MININET_DEVICE pDev = (LPGFA_MININET_DEVICE)hDev;
		if(pDev->itf.pfnPush)
			return (*pDev->itf.pfnPush)(pDev->hDev, b);

		errno = EOPNOTSUPP;
		return -1;
	}

	errno = EINVAL;
	return -1;
}