/****************************************************************************
 *
 *   Copyright (C) 2020 Technology Innovation Institute. All rights reserved.
 *   Author: @author Jukka Laitinen <jukkax@ssrc.tii.ae>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name PX4 nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/**
 * @file usr_mcu_version.c
 * Implementation of generic user-space version API
 */

#include <px4_platform_common/px4_config.h>
#include <px4_platform_common/defines.h>

#include "board_config.h"

static int hw_version = 0;
static int hw_revision = 0;
static char hw_info[] = HW_INFO_INIT;

__EXPORT const char *board_get_hw_type_name(void)
{
	return (const char *) hw_info;
}

__EXPORT int board_get_hw_version(void)
{
	return  hw_version;
}

__EXPORT int board_get_hw_revision()
{
	return  hw_revision;
}

__EXPORT void board_get_uuid32(uuid_uint32_t uuid_words)
{
	/* TODO: This is a stub for userspace build. Use some proper interface
	 * to fetch the uuid32 from the kernel
	 */
	uint32_t chip_uuid[PX4_CPU_UUID_WORD32_LENGTH];
	memset((uint8_t *)chip_uuid, 0, PX4_CPU_UUID_WORD32_LENGTH * 4);

	for (unsigned i = 0; i < PX4_CPU_UUID_WORD32_LENGTH; i++) {
		uuid_words[i] = chip_uuid[i];
	}
}

int board_mcu_version(char *rev, const char **revstr, const char **errata)
{
	/* TODO: This is a stub for userspace build. Use some proper interface
	 * to fetch the version from the kernel
	 */
	return -1;
}

int board_get_px4_guid(px4_guid_t px4_guid)
{
	/* TODO: This is a stub for userspace build. Use some proper interface
	 * to fetch the guid from the kernel
	 */
	uint8_t  *pb = (uint8_t *) &px4_guid[0];
	memset(pb, 0, PX4_GUID_BYTE_LENGTH);

	return PX4_GUID_BYTE_LENGTH;
}

int board_get_px4_guid_formated(char *format_buffer, int size)
{
	px4_guid_t px4_guid;
	board_get_px4_guid(px4_guid);
	int offset  = 0;

	/* size should be 2 per byte + 1 for termination
	 * So it needs to be odd
	 */
	size = size & 1 ? size : size - 1;

	/* Discard from MSD */
	for (unsigned i = PX4_GUID_BYTE_LENGTH - size / 2; offset < size && i < PX4_GUID_BYTE_LENGTH; i++) {
		offset += snprintf(&format_buffer[offset], size - offset, "%02x", px4_guid[i]);
	}

	return offset;
}

