/*
   Copyright 2005-2010 Jakub Kruszona-Zawadzki, Gemius SA, 2013-2014 EditShare,
   2013-2016 Skytechnology sp. z o.o..

   This file was part of MooseFS and is part of LizardFS.

   LizardFS 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, version 3.

   LizardFS 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 LizardFS. If not, see <http://www.gnu.org/licenses/>.
 */

#include "common/platform.h"

#include <stdio.h>

#include "common/server_connection.h"
#include "protocol/cltoma.h"
#include "protocol/matocl.h"
#include "tools/tools_commands.h"
#include "tools/tools_common_functions.h"

static void get_goal_usage() {
	fprintf(stderr,
	        "get objects goal (desired number of copies)\n\nusage:\n lizardfs getgoal [-nhHr] name [name "
	        "...]\n");
	print_numberformat_options();
	print_recursive_option();
}

static int get_goal(const char *fname, uint8_t mode) {
	uint32_t inode;
	int fd = open_master_conn(fname, &inode, NULL, 0, 0);
	if (fd < 0) {
		return -1;
	}
	try {
		uint32_t messageId = 0;
		MessageBuffer request;
		cltoma::fuseGetGoal::serialize(request, messageId, inode, mode);
		MessageBuffer response =
		    ServerConnection::sendAndReceive(fd, request, LIZ_MATOCL_FUSE_GETGOAL);
		PacketVersion version;
		std::vector<FuseGetGoalStats> goalsStats;
		deserializePacketVersionNoHeader(response, version);
		if (version == matocl::fuseGetGoal::kStatusPacketVersion) {
			uint8_t status;
			matocl::fuseGetGoal::deserialize(response, messageId, status);
			throw Exception(std::string(fname) + ": failed", status);
		}
		matocl::fuseGetGoal::deserialize(response, messageId, goalsStats);

		if (mode == GMODE_NORMAL) {
			if (goalsStats.size() != 1) {
				throw Exception(std::string(fname) +
				                ": master query: wrong answer (goalsStats.size != 1)");
			}
			printf("%s: %s\n", fname, goalsStats[0].goalName.c_str());
		} else {
			for (FuseGetGoalStats goalStats : goalsStats) {
				if (goalStats.files > 0) {
					printf(" files with goal        %s :", goalStats.goalName.c_str());
					print_number(" ", "\n", goalStats.files, 1, 0, 1);
				}
			}
			for (FuseGetGoalStats goalStats : goalsStats) {
				if (goalStats.directories > 0) {
					printf(" directories with goal  %s :", goalStats.goalName.c_str());
					print_number(" ", "\n", goalStats.directories, 1, 0, 1);
				}
			}
		}
	} catch (Exception &e) {
		fprintf(stderr, "%s\n", e.what());
		close_master_conn(1);
		return -1;
	}
	close_master_conn(0);
	return 0;
}

static int gene_get_goal_run(int argc, char **argv, int rflag) {
	int ch, status;

	while ((ch = getopt(argc, argv, "rnhH")) != -1) {
		switch (ch) {
		case 'n':
			humode = 0;
			break;
		case 'h':
			humode = 1;
			break;
		case 'H':
			humode = 2;
			break;
		case 'r':
			rflag = 1;
			break;
		}
	}
	argc -= optind;
	argv += optind;

	if (argc < 1) {
		get_goal_usage();
		return 1;
	}

	status = 0;
	while (argc > 0) {
		if (get_goal(*argv, (rflag) ? GMODE_RECURSIVE : GMODE_NORMAL) < 0) {
			status = 1;
		}
		argc--;
		argv++;
	}
	return status;
}

int rget_goal_run(int argc, char **argv) {
	return gene_get_goal_run(argc, argv, 1);
}

int get_goal_run(int argc, char **argv) {
	return gene_get_goal_run(argc, argv, 0);
}
