/*
 * Copyright 2017 Yann Weber
 * 
 * This file is part of Ttail.
 * 
 * Ttail 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.
 * 
 * Ttail 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 Ttail.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "include/ttail.h"
#include "include/ttail_init.h"

int main(int argc, char **argv)
{
	int res;
	ttail_t *ttail;

	if(!(ttail = ttail_init(argc, argv)))
	{
		usage();
		return 1;
	}
	if(ttail_init_check(ttail) < 0)
	{
		usage();
		ttail_free(ttail);
		return 1;
	}
	if(ttail_search_init_session(ttail) < 0)
	{
		fprintf(stderr, "Unable to initialise search session\n");
		ttail_free(ttail);
		return 1;
	}

	//Check that a format was detected
	if(!(ttail->flag & TTAIL_FLAG_FORMAT))
	{
		fprintf(stderr, "No date format set nor detected. Abording.\n");
		return -1;
	}
	else if(!ttail->fmt)
	{
		fprintf(stderr, "Date format flag set but no format found\n");
		return -1;
	}

	if(ttail_norm_dates(ttail) < 0)
	{
		fprintf(stderr, "Unable to normalize dates\n");
		return -1;
	}

	res = ttail_search_closest(ttail);
	if(res < 0)
	{
		fprintf(stderr, "Error while searching through files\n");
		return 1;
	}
	else if (res == 1)
	{
		return 0; /* not found, no line to print */
	}
	ttail_search_print_res(ttail);
	ttail_free(ttail);
	return res;
}