/*
 * Copyright (C) 2024  Tristan Riehs
 *
 * This program 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.
 *
 * 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 a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef DISP_H
#define DISP_H

#include <stdbool.h>
#include <limits.h>

/* Available display types. */
#define DISP_CLI "cli"
#define DISP_RAY "ray"
#define DISP_TUI "tui"

/* Reserved return values for the read_input function. */
#ifndef NDEBUG
#  define DISP_RELOAD INT_MAX
#endif
#define DISP_QUIT (INT_MAX - 1)
#define DISP_ERR (INT_MAX - 2)

struct disp {
	void (*init)(void);
	void (*display_calc)(int, int);
	int  (*read_input)(void);
	void (*display_res)(bool, int);
	void (*destroy)(void);
#ifndef NDEBUG
	char *name;
	void *dl_handle;
	char *so_path;
	void *(*pre_reload)(void);
	void (*post_reload)(void *);
#endif
};

/* Get a display handler for the given display type. */
struct disp *get_disp(char *);
void destroy_disp(struct disp *);

#ifndef NDEBUG
void disp_reload(struct disp *);
#endif	/* NDEBUG */

#endif	/* DISP_H */