/** Minimal terminal using pollcat - main loop
 *
 *  This file is part of the Pollcat Library.
 *  Copyright (C) 2022 Expatria Technologies Inc.
 *  Contact: Morgan Hughes <morgan@expatria.ca>
 *
 *  The Pollcat Library is free software: you can redistribute it and/or modify it under
 *  the terms of the 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 copies of the GNU General Public License and the GNU Lesser
 *  General Public License along with the Pollcat Library.  If not, see
 *  https://www.gnu.org/licenses/
 *
 *  vim:ts=4:noexpandtab
 */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>

#include <pollcat.h>

#include "terminal.h"


char *opt_node  = "/dev/ttyUSB0";
char *opt_speed = "115200N81";


static void signal_fatal (int signum)
{
	fprintf(stderr, "Fatal signal %d, exit loop\n", signum);
	pollcat_loop_exit();
}

extern char *__progname;
static void usage (void)
{
	printf("Usage: %s [-t timeout] [-b speed] [node]\n"
	       "-t timeout    Timeout for poll() calls (ms)\n"
	       "-b speed      Speed/parity/data/stop bits (default 115200N81)\n"
	       "node should be a serial device, such as /dev/ttyS0 or /dev/ttyUSB0\n",
	       __progname);
	exit(1);
}

int main (int argc, char **argv)
{
	int opt;
	while ( (opt = getopt(argc, argv, "t:b:")) != -1 )
		switch ( opt )
		{
			case 't':
				pollcat_time_base = atoi(optarg);
				break;

			case 'b':
				opt_speed = optarg;
				break;

			default:
				usage();
		}

	if ( optind < argc )
		opt_node = argv[optind];

	if ( serial_init(opt_node, opt_speed) )
	{
		perror(opt_node);
		return 1;
	}

	if ( tty_init() )
	{
		perror("tty_init");
		return 1;
	}

	signal(SIGTERM, signal_fatal);
	signal(SIGINT,  signal_fatal);

	while ( pollcat_loop(NULL) )
		;

	tty_done();
	serial_done();

	return 0;
}