/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef ASSET_H
#define ASSET_H

#include <SDL_filesystem.h>
#include <SDL_rwops.h>
#include <stdio.h>
#include <stdlib.h>

struct Paths {
	char *base;
	char *pref;
};

static inline int assetPaths(struct Paths *paths) {
	paths->base = SDL_GetBasePath();
	if (!paths->base) return -1;
	paths->pref = SDL_GetPrefPath("Causal Agency", "Entertainment Pack");
	if (!paths->pref) return -1;
	return 0;
}

static inline SDL_RWops *
assetOpen(const struct Paths *paths, const char *names[], size_t len) {
	const char *dirs[3] = { paths->pref, paths->base, "" };
	for (size_t i = 0; i < 3; ++i) {
		for (size_t j = 0; j < len; ++j) {
			char path[1024];
			snprintf(path, sizeof(path), "%s%s", dirs[i], names[j]);
			SDL_RWops *rw = SDL_RWFromFile(path, "rb");
			if (rw) return rw;
		}
	}
	return NULL;
}

static inline SDL_RWops *assetOpenCards(const struct Paths *paths) {
	const char *names[3] = { "CARDS.DLL", "SOL.EXE", "cards.dll" };
	SDL_RWops *rw = assetOpen(paths, names, 3);
	if (rw) return rw;
	char msg[4096];
	snprintf(
		msg, sizeof(msg), "%s or %s not found in:\n%s\n%s",
		names[0], names[1], paths->pref, paths->base
	);
	SDL_ShowSimpleMessageBox(
		SDL_MESSAGEBOX_ERROR, "Entertainment Pack", msg, NULL
	);
	return NULL;
}

static inline SDL_RWops *assetOpenFreeCell(const struct Paths *paths) {
	const char *names[2] = { "FREECELL.EXE", "freecell.exe" };
	return assetOpen(paths, names, 2);
}

#endif