/*****************************************************************************\
 *  info_lics.c - licenses information functions for scontrol.
 *****************************************************************************
 *  Copyright (C) 2002-2007 The Regents of the University of California.
 *  Copyright (C) 2008-2010 Lawrence Livermore National Security.
 *  Copyright (C) SchedMD LLC.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by David Bigagli david@schemed.com
 *  CODE-OCEC-09-009. All rights reserved.
 *
 *  This file is part of Slurm, a resource management program.
 *  For details, see <https://slurm.schedmd.com/>.
 *  Please also read the included file: DISCLAIMER.
 *
 *  Slurm is free software; you can redistribute it and/or modify it under
 *  the terms of the GNU General Public License as published by the Free
 *  Software Foundation; either version 2 of the License, or (at your option)
 *  any later version.
 *
 *  In addition, as a special exception, the copyright holders give permission
 *  to link the code of portions of this program with the OpenSSL library under
 *  certain conditions as described in each individual source file, and
 *  distribute linked combinations including the two. You must obey the GNU
 *  General Public License in all respects for all of the code used other than
 *  OpenSSL. If you modify file(s) with this exception, you may extend this
 *  exception to your version of the file(s), but you are not obligated to do
 *  so. If you do not wish to do so, delete this exception statement from your
 *  version.  If you delete this exception statement from all source files in
 *  the program, then also delete it here.
 *
 *  Slurm 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 General Public License along
 *  with Slurm; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
\*****************************************************************************/

#include "src/common/data.h"
#include "src/common/sercli.h"

#include "src/interfaces/data_parser.h"

#include "scontrol.h"

static void _print_license_info(const char *, license_info_msg_t *);
static slurm_license_info_t ** _license_sort(license_info_msg_t
					     *license_list);
static int _lic_cmp(const void *lic1, const void *lic2);

static int _lic_cmp(const void *lic1, const void *lic2)
{
	char *name1 = (*((slurm_license_info_t **)lic1))->name;
	char *name2 = (*((slurm_license_info_t **)lic2))->name;
	return xstrcmp(name1, name2);
}

/* license_sort()
 *
 * Sort the list of licenses by their name
 *
 */
static slurm_license_info_t ** _license_sort(license_info_msg_t
					     *license_list)
{
	slurm_license_info_t **lic_list_ptr = xmalloc(
		sizeof(slurm_license_info_t*) * license_list->num_lic);
	slurm_license_info_t *lic_ptr;
	int list_cnt;

	// Set tmp array of pointers to each license
	for (list_cnt = 0, lic_ptr = license_list->lic_array;
	     list_cnt < license_list->num_lic; list_cnt++, lic_ptr++) {
		lic_list_ptr[list_cnt] = lic_ptr;
	}

	qsort(lic_list_ptr, license_list->num_lic,
	      sizeof(slurm_license_info_t *), _lic_cmp);

	return lic_list_ptr;
}

/* scontrol_print_licenses()
 *
 * Retrieve and display the license information
 * from the controller
 *
 */
extern void scontrol_print_licenses(const char *name, int argc, char **argv)
{
	int cc;
	license_info_msg_t *msg;
	uint16_t show_flags;
	static time_t last_update;

	show_flags = 0;
	/* call the controller to get the meat
	 */
	cc = slurm_load_licenses(last_update, &msg, show_flags);
	if (cc != SLURM_SUCCESS) {
		/* Hosed, crap out.
		 */
		exit_code = 1;
		if (quiet_flag != 1)
			slurm_perror ("slurm_load_license error");
		return;
	}

	last_update = time(NULL);
	/*
	 * Print the info
	 */
	if (mime_type) {
		int rc;
		openapi_resp_license_info_msg_t resp = {
			.licenses = msg,
			.last_update = msg->last_update,
		};

		DATA_DUMP_CLI(OPENAPI_LICENSES_RESP, resp, orig_argc, orig_argv,
			      NULL, mime_type, data_parser, rc);

		if (rc)
			exit_code = 1;
	} else {
		_print_license_info(name, msg);
	}

	/* free at last
	 */
	slurm_free_license_info_msg(msg);

	return;
}

static int _match_license_name(const char *query, const char *name, bool fuzzy)
{
	if (fuzzy)
		return slurm_remote_license_fuzzy_match(query, name);
	return xstrcmp(query, name) == 0;
}

/* _print_license_info()
 *
 * Print the license information.
 */
static void _print_license_info(const char *name, license_info_msg_t *msg)
{
	int cc, disp_num_lic = 0, fuzzy_num_lic = 0;
	bool use_fuzzy_match = false;
	slurm_license_info_t **sorted_lic = NULL;
	slurm_license_info_t **display_lic = NULL;

	if (!msg->num_lic) {
		printf("No licenses configured in Slurm.\n");
		return;
	}

	display_lic = xcalloc(sizeof(slurm_license_info_t *), msg->num_lic);
	if (xstrcasestr(slurm_conf.license_params, "RemoteFuzzyMatch"))
		use_fuzzy_match = true;

	sorted_lic = _license_sort(msg);
	for (cc = 0; cc < msg->num_lic; cc++) {
		if (name) {
			bool remote_fuzzy =
				(use_fuzzy_match && sorted_lic[cc]->remote);
			switch (_match_license_name(name, sorted_lic[cc]->name,
						    remote_fuzzy)) {
			case LIC_NO_MATCH:
				continue;
			case LIC_FUZZY_MATCH:
				fuzzy_num_lic++;
			}
		}
		display_lic[disp_num_lic++] = sorted_lic[cc];
	}

	if (name && fuzzy_num_lic > 1) {
		/* fuzzy matching should never over-match */
		error("query \"%s\" matched more than one result, exiting.", name);
		exit_code = 1;
		goto cleanup;
	} else if (name && disp_num_lic == 0) {
		error("query \"%s\" matched zero licenses.", name);
		exit_code = 1;
		goto cleanup;
	}

	for (cc = 0; cc < disp_num_lic; cc++) {
		printf("LicenseName=%s%sTotal=%u Used=%u Free=%u Reserved=%u Remote=%s",
		       (display_lic[cc])->name, one_liner ? " " : "\n    ",
		       (display_lic[cc])->total, (display_lic[cc])->in_use,
		       (display_lic[cc])->available,
		       (display_lic[cc])->reserved,
		       (display_lic[cc])->remote ? "yes" : "no");
		if (display_lic[cc]->mode) {
			printf("%sNodes=%s Mode=%u\n",
			       one_liner ? " " : "\n    ",
			       display_lic[cc]->nodes, display_lic[cc]->mode);
		} else if (display_lic[cc]->remote) {
			char time_str[256];
			slurm_make_time_str(&display_lic[cc]->last_update,
					    time_str, sizeof(time_str));
			printf("%sLastConsumed=%u LastDeficit=%u LastUpdate=%s\n",
			       one_liner ? " " : "\n    ",
			       display_lic[cc]->last_consumed,
			       display_lic[cc]->last_deficit, time_str);
		} else {
			printf("\n");
		}
	}

cleanup:
	xfree(sorted_lic);
	xfree(display_lic);
}
