/*
 * 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 "game.h"
#include "output.h"

static void
_db_find_dirs(char *program_name,
		const char **games_dir, const char **fonts_dir)
{
	char *program_dir;

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

static int
_db_init(SDL_Window **window, SDL_Renderer **renderer, SDL_Texture **texture)
{
	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;
	}

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

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

	*texture = SDL_CreateTexture(*renderer, SDL_PIXELFORMAT_ARGB8888,
			SDL_TEXTUREACCESS_TARGET, 640, 480);
	if (*texture == NULL) {
		db_err("Failed to create texture (%s)", SDL_GetError());
		SDL_DestroyRenderer(*renderer);
		SDL_DestroyWindow(*window);
		SDL_Quit();
		return -1;
	}

	SDL_DisableScreenSaver();

	return 0;
}

static void
_db_quit(SDL_Window *window, SDL_Renderer *renderer, SDL_Texture *texture)
{
	SDL_EnableScreenSaver();
	SDL_DestroyTexture(texture);
	SDL_DestroyRenderer(renderer);
	SDL_DestroyWindow(window);
	TTF_Quit();
	SDL_Quit();
}

int
main(int argc, char *argv[])
{
	const char      *games_dir;
	const char      *fonts_dir;
	SDL_Window      *window;
	SDL_Renderer    *renderer;
	SDL_Texture     *texture;
	struct db_game **games;
	int              n;
	int              i;

	/* Find data directories */
	_db_find_dirs(argv[0], &games_dir, &fonts_dir);

	/* Initialize SDL libraries */
	if (_db_init(&window, &renderer, &texture) < 0) {
		return EXIT_FAILURE;
	}

	/* Find games */
	n = db_games_find(games_dir, &games);
	if (n > 0) {
		printf("%d games:\n", n);
		for (i = 0; i < n; ++i) {
			printf("\t%s - %s\n", db_game_get_name(games[i]),
					db_game_get_desc(games[i]));
			db_game_free(games[i]);
		}
		free(games);
	}

	SDL_SetRenderDrawColor(renderer, 0x7F, 0x7F, 0x7F, 0xFF);
	SDL_RenderClear(renderer);
	SDL_RenderPresent(renderer);
	SDL_Delay(1000);

	/* Quit SDL libraries */
	_db_quit(window, renderer, texture);

	return EXIT_SUCCESS;
}