/*
 * Copyright (C) 2021  P. J. McDermott
 *
 * This file is part of Dodge Balls
 *
 * Dodge Balls 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.
 *
 * Dodge Balls 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 Dodge Balls.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <SDL.h>
#include <SDL_ttf.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "main.h"
#include "output.h"

static const char   *_db_games_dir;
static const char   *_db_fonts_dir;
static SDL_Window   *_db_window;
static SDL_Renderer *_db_renderer;
static SDL_Texture  *_db_texture;

static void
_db_find_dirs(char *program_name)
{
	char *program_dir;

	program_dir = realpath(dirname(program_name), NULL);
	if (strcmp(program_dir, ABS_BUILDDIR) == 0) {
		/* Running in place */
		_db_games_dir = ABS_BUILDDIR "/games";
		_db_fonts_dir = ABS_BUILDDIR "/fonts";
	} else {
		/* Running from installation */
		_db_games_dir = GAMESDIR;
		_db_fonts_dir = FONTSDIR;
	}
	free(program_dir);
}

static int
_db_init(void)
{
	if (SDL_Init(SDL_INIT_VIDEO) < 0) {
		db_err("Failed to initialize SDL (%s)", SDL_GetError());
		return -1;
	}

	if (TTF_Init() < 0) {
		db_err("Failed to initialize SDL_ttf (%s)", TTF_GetError());
		return -1;
	}

	_db_window = SDL_CreateWindow("Dodge Balls",
			SDL_WINDOWPOS_UNDEFINED,
			SDL_WINDOWPOS_UNDEFINED,
			640, 480, 0);
	if (_db_window == NULL) {
		db_err("Failed to create window (%s)", SDL_GetError());
		SDL_Quit();
		return -1;
	}

	_db_renderer = SDL_CreateRenderer(_db_window, -1, 0);
	if (_db_renderer == NULL) {
		db_err("Failed to create renderer (%s)", SDL_GetError());
		SDL_DestroyWindow(_db_window);
		SDL_Quit();
		return -1;
	}

	_db_texture = SDL_CreateTexture(_db_renderer, SDL_PIXELFORMAT_ARGB8888,
			SDL_TEXTUREACCESS_STATIC, 640, 480);
	if (_db_texture == NULL) {
		db_err("Failed to create texture (%s)", SDL_GetError());
		SDL_DestroyRenderer(_db_renderer);
		SDL_DestroyWindow(_db_window);
		SDL_Quit();
		return -1;
	}

	SDL_DisableScreenSaver();

	return 0;
}

static void
_db_quit(void)
{
	SDL_EnableScreenSaver();
	SDL_DestroyTexture(_db_texture);
	SDL_DestroyRenderer(_db_renderer);
	SDL_DestroyWindow(_db_window);
	TTF_Quit();
	SDL_Quit();
}

const char *
db_get_games_dir(void)
{
	return _db_games_dir;
}

const char *
db_get_fonts_dir(void)
{
	return _db_fonts_dir;
}

SDL_Window *
db_get_window(void)
{
	return _db_window;
}

SDL_Renderer *
db_get_renderer(void)
{
	return _db_renderer;
}

SDL_Texture *
db_get_texture(void)
{
	return _db_texture;
}

int
main(int argc, char *argv[])
{
	/* Find data directories */
	_db_find_dirs(argv[0]);

	/* Initialize SDL libraries */
	if (_db_init() < 0) {
		return EXIT_FAILURE;
	}

	db_main_menu();

	/* Quit SDL libraries */
	_db_quit();

	return EXIT_SUCCESS;
}