/*
 *  This file is part of uIRCd. (https://git.redxen.eu/caskd/uIRCd)
 *  Copyright (c) 2019, 2020 Alex-David Denes
 *
 *  uIRCd 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 3 of the License, or
 *  any later version.
 *
 *  uIRCd 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 uIRCd.  If not, see <https://www.gnu.org/licenses/>.
 */

#include "channels.h"

#include "logging.h" // LOG()
#include "memory.h"  // allocate_copy()

#include <errno.h>      // errno
#include <stdbool.h>    // bool
#include <stdio.h>      // snprintf()
#include <string.h>     // strerror()
#include <sys/socket.h> // sockaddr connect()
#include <sys/types.h>  // size_t ssize_t socklen_t
#include <stdlib.h>     // malloc() realloc()

int
init_chanarray(Channel** chans)
{
	if (chans != NULL && *chans == NULL) {
		// Initialise dynamic-sized array with last element as NULL pointer
		if ((*chans = malloc(sizeof(Channel))) != NULL) {
			memset(*chans, '\0', sizeof(Channel));
		} else {
			LOG(LOG_WARN, "Could not initialise channel array. " ERRNOFMT, strerror(errno), errno);
			return 0;
		}
	}
	return 1;
}

signed int
resize_chanarray(Channel** chans)
{
	unsigned int i   = get_channelindex(NULL, *chans);
	Channel*     tmp = NULL;
	LOG(LOG_DEBUG, "Found %i existing channels.", i);
	if ((tmp = realloc(*chans, (i + 2) * sizeof(Channel))) != NULL) {
		*chans          = tmp;
		tmp[i + 1].name = NULL;
		tmp[i + 1].key  = NULL;
	} else {
		LOG(LOG_WARN, "Could not allocate channel struct. " ERRNOFMT, strerror(errno), errno);
		return -1;
	}
	return (signed int) i;
}

int
set_channel(Channel* chan, const char* name, const char* key, bool joined)
{
	LOG(LOG_DEBUG, "Setting channel %s", (name == NULL) ? chan->name : name);
	if (name != NULL) {
		if (!allocate_copy(&chan->name, name)) {
			LOG(LOG_WARN, "Couldn't allocate memory for the channel name %s. " ERRNOFMT, name, strerror(errno), errno);
			return 0;
		}
	}
	if (key != NULL) {
		if (!allocate_copy(&chan->key, key)) {
			LOG(LOG_WARN,
			    "Couldn't allocate memory for the channel %s key. " ERRNOFMT,
			    (name == NULL) ? chan->name : name,
			    strerror(errno),
			    errno);
			return 0;
		}
	}
	chan->joined = joined;
	return 1;
}

unsigned int
get_channelindex(const char* name, Channel* chans)
{
	unsigned int i;
	for (i = 0; chans != NULL && chans[i].name != NULL; i++) {
		if (name != NULL && strcmp(chans[i].name, name) == 0) break;
	}
	return i;
}