/*
 * Program entry point
 *
 * Copyright (C) 2019  Patrick McDermott
 *
 * This file is part of Timeteller.
 *
 * Timeteller 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
 * (at your option) any later version.
 *
 * Timeteller 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 Timeteller.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>

#include "screen.h"
#include "speech.h"

static const char *program_name;

static void
set_program_name(const char *name)
{
	assert(name && *name);

	program_name = name;
}

static void __attribute__((format(printf, 1, 2)))
error(const char *format, ...)
{
	va_list ap;

	assert(format);

	fprintf(stderr, "%s: Error: ", program_name);
	va_start(ap, format);
	vfprintf(stderr, format, ap);
	va_end(ap);
	fputs("\n", stderr);
}

int
main(int argc, char **argv)
{
	struct speech *speech;
	struct screen *screen;
	int            ret;

	assert(argc >= 1);
	set_program_name(argv[0]);

	speech = speech_new();
	if (speech == NULL) {
		error("Failed to initialize speech synthesis engine");
		return EXIT_FAILURE;
	}

	screen = screen_new();

	if (screen_main(screen, speech)) {
		ret = EXIT_SUCCESS;
	} else {
		ret = EXIT_FAILURE;
	}

	screen_destroy(&screen);
	speech_destroy(&speech);

	return ret;
}