ServerBrowser.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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.
//
//    Scorched3D 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 Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <serverbrowser/ServerBrowser.h>
#include <common/OptionsMasterListServer.h>

ServerBrowser *ServerBrowser::instance_ = 0;

ServerBrowser *ServerBrowser::instance()
{
        if (!instance_)
        {
                instance_ = new ServerBrowser;
        }
        return instance_;
}

ServerBrowser::ServerBrowser() : 
        refreshing_(false), serverList_(), 
        serverRefresh_(serverList_),
        serverCollector_(serverList_)
{
        refreshingMutex_ = SDL_CreateMutex();
}

ServerBrowser::~ServerBrowser() 
{
        SDL_DestroyMutex(refreshingMutex_);
}

void ServerBrowser::cancel()
{
        SDL_LockMutex(refreshingMutex_);
        bool complete = true;
        if (refreshing_)
        {
                complete = false;
                serverCollector_.setCancel(true);
                serverRefresh_.setCancel(true);
        }
        SDL_UnlockMutex(refreshingMutex_);

        while (!complete)
        {
                SDL_Delay(100);
                SDL_LockMutex(refreshingMutex_);
                if (!refreshing_) complete = true;
                SDL_UnlockMutex(refreshingMutex_);
        }
}

void ServerBrowser::refreshList(RefreshType t)
{
        bool alreadyRefreshing = false;
        SDL_LockMutex(refreshingMutex_);
        alreadyRefreshing = refreshing_;
        refreshing_ = true;
        SDL_UnlockMutex(refreshingMutex_);
        if (alreadyRefreshing) return;

        SDL_CreateThread(ServerBrowser::threadFunc, (void *) int(t));
}

int ServerBrowser::threadFunc(void *var)
{
        RefreshType typ = (RefreshType) long(var);

        bool result = false;
        switch (typ)
        {
        case RefreshNone:
                // No new list
                break;
        case RefreshLan:
                result = instance_->serverCollector_.fetchLANList();
                break;
        case RefreshNet:
                result = 
                        instance_->serverCollector_.fetchServerList(
                                OptionsMasterListServer::instance()->getMasterListServer(),
                                OptionsMasterListServer::instance()->getMasterListServerURI()) 
                        ||
                        instance_->serverCollector_.fetchServerList(
                                OptionsMasterListServer::instance()->getMasterListBackupServer(),
                                OptionsMasterListServer::instance()->getMasterListBackupServerURI());

                break;
        case RefreshFavourites:
                result = instance_->serverCollector_.fetchFavoritesList();
                break;
        }
        if (result)
        {
                instance_->serverRefresh_.refreshList();
        }
        
        SDL_LockMutex(instance_->refreshingMutex_);
        instance_->serverCollector_.setCancel(false);
        instance_->serverRefresh_.setCancel(false);
        instance_->refreshing_ = false;
        SDL_UnlockMutex(instance_->refreshingMutex_);
        return 0;
}

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