/*
 * Terminal screen functions
 *
 * 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 2 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 "screen.h"

#include <assert.h>
#include <curses.h>
#include <stdbool.h>
#include <stdlib.h>

#include "clock.h"
#include "speech.h"

struct screen {
	WINDOW       *win;
	struct clock *clock;
};

struct screen *
screen_new(void)
{
	struct screen *screen;

	screen = calloc(1, sizeof(*screen));
	if (screen == NULL) {
		return NULL;
	}

	screen->win = initscr();  /* On failure, does not return.  */
	if (noecho() == ERR || raw() == ERR || nodelay(screen->win, TRUE)) {
		free(screen);
		return NULL;
	}
	curs_set(0);  /* Ignore errors.  */

	screen->clock = clock_new(screen->win);
	if (screen->clock == NULL) {
		free(screen);
		return NULL;
	}

	return screen;
}

bool
screen_main(struct screen *screen, struct speech *speech)
{
	assert(screen);
	assert(speech);

	clock_draw(screen->clock);

	refresh();

	speech_play_time(speech);

	return true;
}

struct screen *
screen_destroy(struct screen **screen_p)
{
	struct screen *screen;

	assert(screen_p && *screen_p);

	screen = *screen_p;

	delwin(screen->win);
	endwin();

	clock_destroy(&screen->clock);

	free(screen);
	return screen = NULL;
}