/*
Minetest-c55
Copyright (C) 2012 celeron55, Perttu Ahola <celeron55@gmail.com>

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 2 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, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "subgame.h"
#include "porting.h"
#include "filesys.h"
#include "settings.h"

SubgameSpec findSubgame(const std::string &id)
{
	if(id == "")
		return SubgameSpec();
	std::string share_server = porting::path_share + DIR_DELIM + "server";
	std::string user_server = porting::path_user + DIR_DELIM + "server";
	// Find game directory
	std::string game_path =
			user_server + DIR_DELIM + "games" + DIR_DELIM + id;
	bool user_game = true; // Game is in user's directory
	if(!fs::PathExists(game_path)){
		game_path = share_server + DIR_DELIM + "games" + DIR_DELIM + id;
		user_game = false;
	}
	if(!fs::PathExists(game_path))
		return SubgameSpec();
	// Find addon directories
	std::set<std::string> addon_paths;
	if(!user_game)
		addon_paths.insert(share_server + DIR_DELIM + "addons"
				+ DIR_DELIM + id);
	addon_paths.insert(user_server + DIR_DELIM + "addons"
			+ DIR_DELIM + id);
	return SubgameSpec(id, game_path, addon_paths);
}

std::set<std::string> getAvailableGameIds()
{
	std::set<std::string> gameids;
	std::set<std::string> gamespaths;
	gamespaths.insert(porting::path_share + DIR_DELIM + "server"
			+ DIR_DELIM + "games");
	gamespaths.insert(porting::path_user + DIR_DELIM + "server"
			+ DIR_DELIM + "games");
	for(std::set<std::string>::const_iterator i = gamespaths.begin();
			i != gamespaths.end(); i++){
		std::vector<fs::DirListNode> dirlist = fs::GetDirListing(*i);
		for(u32 j=0; j<dirlist.size(); j++){
			if(!dirlist[j].dir)
				continue;
			gameids.insert(dirlist[j].name);
		}
	}
	return gameids;
}

std::string getWorldGameId(const std::string &world_path)
{
	std::string conf_path = world_path + DIR_DELIM + "world.mt";
	Settings conf;
	bool succeeded = conf.readConfigFile(conf_path.c_str());
	if(!succeeded)
		return "";
	if(!conf.exists("gameid"))
		return "";
	return conf.get("gameid");
}