/*
 * UserCache.h
 *
 * Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
 *
 * 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 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_COMMON_USERCACHE_H_
#define MAD_COMMON_USERCACHE_H_

#include "UserBackend.h"

#include <limits>

#include <boost/thread/shared_mutex.hpp>

namespace Mad {
namespace Common {

class UserManager;

class UserCache : public UserBackend, private boost::noncopyable {
  private:
    friend class UserManager;

    boost::shared_ptr<UserBackend> backend;

    boost::shared_mutex mutex;

    boost::shared_ptr<const std::map<unsigned long, UserInfo> > users;
    boost::shared_ptr<std::map<std::string, unsigned long> > userNames;
    Core::Exception userException;

    boost::shared_ptr<const std::map<unsigned long, GroupInfo> > groups;
    boost::shared_ptr<std::map<std::string, unsigned long> > groupNames;
    Core::Exception groupException;

    boost::shared_ptr<const std::multimap<unsigned long, unsigned long> > userGroups;
    boost::shared_ptr<std::multimap<unsigned long, unsigned long> > groupUsers;
    Core::Exception userGroupException;

  protected:
    virtual boost::shared_ptr<const std::map<unsigned long, UserInfo> > getUserList() throw(Core::Exception);
    virtual boost::shared_ptr<const UserInfo> getUserInfo(unsigned long uid) throw(Core::Exception);
    virtual boost::shared_ptr<const UserInfo> getUserInfoByName(const std::string &name) throw(Core::Exception);
    virtual boost::shared_ptr<const std::set<unsigned long> > getUserGroupList(unsigned long uid) throw(Core::Exception);

    virtual boost::shared_ptr<const std::map<unsigned long, GroupInfo> > getGroupList() throw(Core::Exception);
    virtual boost::shared_ptr<const GroupInfo> getGroupInfo(unsigned long gid) throw(Core::Exception);
    virtual boost::shared_ptr<const GroupInfo> getGroupInfoByName(const std::string &name) throw(Core::Exception);
    virtual boost::shared_ptr<const std::set<unsigned long> > getGroupUserList(unsigned long gid) throw(Core::Exception);

    virtual boost::shared_ptr<const std::multimap<unsigned long, unsigned long> > getFullUserGroupList() throw(Core::Exception);

    virtual void setPassword(unsigned long uid, const std::string &password) throw(Core::Exception) {
      backend->setPassword(uid, password);
    }

    virtual void addUser(const UserInfo &userInfo) throw(Core::Exception) {
      backend->addUser(userInfo);
    }

    UserCache(boost::shared_ptr<UserBackend> backend0) : backend(backend0) {}
};

}
}

#endif /* MAD_COMMON_USERCACHE_H_ */