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*
* Copyright (c) 2014 PX4 Development Team. All rights reserved.
*
* 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
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****************************************************************************/

/**
* @file ver.c
*
* Version command, unifies way of showing versions of HW, SW, Build, GCC
* In case you want to add new version just extend version_main function
*
* @author Vladimir Kulla <ufon@kullaonline.net>
*/

#include <stdio.h>
#include <string.h>
#include <version/version.h>
#include <systemlib/err.h>
#include <systemlib/mcu_version.h>

/* string constants for version commands */
static const char sz_ver_hw_str[] 	= "hw";
static const char sz_ver_hwcmp_str[] = "hwcmp";
static const char sz_ver_git_str[] 	= "git";
static const char sz_ver_bdate_str[] = "bdate";
static const char sz_ver_gcc_str[] 	= "gcc";
static const char sz_ver_all_str[] 	= "all";
static const char mcu_ver_str[]		= "mcu";
static const char mcu_uid_str[]		= "uid";

static void usage(const char *reason)
{
	if (reason != NULL) {
		printf("%s\n", reason);
	}

	printf("usage: ver {hw|hwcmp|git|bdate|gcc|all|mcu|uid}\n\n");
}

__EXPORT int ver_main(int argc, char *argv[]);

int ver_main(int argc, char *argv[])
{
	/* defaults to an error */
	int ret = 1;

	/* first check if there are at least 2 params */
	if (argc >= 2) {
		if (argv[1] != NULL) {

			if (!strncmp(argv[1], sz_ver_hwcmp_str, sizeof(sz_ver_hwcmp_str))) {
				if (argc >= 3 && argv[2] != NULL) {
					/* compare 3rd parameter with HW_ARCH string, in case of match, return 0 */
					ret = strncmp(HW_ARCH, argv[2], strlen(HW_ARCH));

					if (ret == 0) {
						printf("ver hwcmp match: %s\n", HW_ARCH);
					}
					return ret;

				} else {
					errx(1, "Not enough arguments, try 'ver hwcmp PX4FMU_V2'");
				}
			}

			/* check if we want to show all */
			bool show_all = !strncmp(argv[1], sz_ver_all_str, sizeof(sz_ver_all_str));

			if (show_all || !strncmp(argv[1], sz_ver_hw_str, sizeof(sz_ver_hw_str))) {
				printf("HW arch: %s\n", HW_ARCH);
				ret = 0;

			}

			if (show_all || !strncmp(argv[1], sz_ver_git_str, sizeof(sz_ver_git_str))) {
				printf("FW git-hash: %s\n", FW_GIT);
				ret = 0;

			}

			if (show_all || !strncmp(argv[1], sz_ver_bdate_str, sizeof(sz_ver_bdate_str))) {
				printf("Build datetime: %s %s\n", __DATE__, __TIME__);
				ret = 0;

			}

			if (show_all || !strncmp(argv[1], sz_ver_gcc_str, sizeof(sz_ver_gcc_str))) {
				printf("Toolchain: %s\n", __VERSION__);
				ret = 0;

			}

			if (show_all || !strncmp(argv[1], mcu_ver_str, sizeof(mcu_ver_str))) {

				char rev;
				char* revstr;

				int chip_version = mcu_version(&rev, &revstr);

				if (chip_version < 0) {
					printf("UNKNOWN MCU\n");

				} else {
					printf("MCU: %s, rev. %c\n", revstr, rev);

					if (chip_version < MCU_REV_STM32F4_REV_3) {
						printf("\nWARNING   WARNING   WARNING!\n"
							"Revision %c has a silicon errata\n"
							"This device can only utilize a maximum of 1MB flash safely!\n"
							"http://px4.io/help/errata\n\n", rev);
					}
				}

				ret = 0;
			}

			if (show_all || !strncmp(argv[1], mcu_uid_str, sizeof(mcu_uid_str))) {
				uint32_t uid[3];

				mcu_unique_id(uid);

				printf("UID: %X:%X:%X \n",uid[0],uid[1],uid[2]);

				ret = 0;
			}


			if (ret == 1) {
				errx(1, "unknown command.\n");
			}

		} else {
			usage("Error, input parameter NULL.\n");
		}

	} else {
		usage("Error, not enough parameters.");
	}

	return ret;
}