/*
 * Date and time functions
 *
 * Copyright (C) 2010-2023, Joachim Metz <joachim.metz@gmail.com>
 *
 * Refer to AUTHORS for acknowledgements.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <common.h>

#if defined( HAVE_SYS_TIME_H )
#include <sys/time.h>
#endif

#include <time.h>

#include "libfcache_date_time.h"
#include "libfcache_libcerror.h"
#include "libfcache_types.h"

/* Retrieves the cache value timestamp
 * Returns 1 if successful or -1 on error
 */
int libfcache_date_time_get_timestamp(
     int64_t *timestamp,
     libcerror_error_t **error )
{
#if defined( HAVE_CLOCK_GETTIME )
	struct timespec time_structure;
#endif

	static char *function = "libfcache_date_time_get_timestamp";

	if( timestamp == NULL )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
		 LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
		 "%s: invalid timestamp.",
		 function );

		return( -1 );
	}
#if defined( HAVE_CLOCK_GETTIME )
	if( clock_gettime(
	     CLOCK_REALTIME,
	     &time_structure ) != 0 )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_RUNTIME,
		 LIBCERROR_RUNTIME_ERROR_GET_FAILED,
		 "%s: unable to retrieve current time structure.",
		 function );

		return( -1 );
	}
	*timestamp = ( (int64_t) time_structure.tv_sec * 1000000000 ) + time_structure.tv_nsec;

#else
	*timestamp = (int64_t) time( NULL );

	if( *timestamp == (time_t) -1 )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_RUNTIME,
		 LIBCERROR_RUNTIME_ERROR_GET_FAILED,
		 "%s: unable to retrieve current time.",
		 function );

		return( -1 );
	}
#endif /* defined( HAVE_CLOCK_GETTIME ) */

	return( 1 );
}