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/*
 * UserManager.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 Lesser 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_SERVER_USERMANAGER_H_
#define MAD_SERVER_USERMANAGER_H_

#include "UserInfo.h"
#include "GroupInfo.h"

#include <Core/Exception.h>

#include <map>
#include <set>

#include <boost/thread/locks.hpp>
#include <boost/thread/shared_mutex.hpp>

namespace Mad {
namespace Common {

class Application;
class UserBackend;
class UserCache;

class UserManager : private boost::noncopyable {
  private:
    friend class Application;

    struct Compare {
      bool operator() (boost::shared_ptr<UserBackend> b1, boost::shared_ptr<UserBackend> b2);
    };

    typedef std::map<boost::shared_ptr<UserBackend>, boost::shared_ptr<UserBackend>, Compare> BackendMap;

    Application *application;

    BackendMap backends;

    boost::shared_mutex mutex;

    UserManager(Application *application0) : application(application0) {}

  public:
    void registerBackend(boost::shared_ptr<UserBackend> backend) {
      boost::lock_guard<boost::shared_mutex> lock(mutex);
      backends.insert(std::make_pair(backend, backend));
    }

    void registerBackendCached(boost::shared_ptr<UserBackend> backend);

    void unregisterBackend(boost::shared_ptr<UserBackend> backend) {
      boost::lock_guard<boost::shared_mutex> lock(mutex);
      backends.erase(backend);
    }

    boost::shared_ptr<const std::map<unsigned long, UserInfo> > getUserList(boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);
    boost::shared_ptr<const UserInfo> getUserInfo(unsigned long uid, boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);
    boost::shared_ptr<const UserInfo> getUserInfoByName(const std::string &name, boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);
    boost::shared_ptr<const std::set<unsigned long> > getUserGroupList(unsigned long uid, boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);

    boost::shared_ptr<const std::map<unsigned long, GroupInfo> > getGroupList(boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);
    boost::shared_ptr<const GroupInfo> getGroupInfo(unsigned long gid, boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);
    boost::shared_ptr<const GroupInfo> getGroupInfoByName(const std::string &name, boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);
    boost::shared_ptr<const std::set<unsigned long> > getGroupUserList(unsigned long gid, boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);

    boost::shared_ptr<const std::multimap<unsigned long, unsigned long> > getFullUserGroupList(boost::posix_time::ptime *timestamp = 0) throw(Core::Exception);

    void setPassword(unsigned long uid, const std::string &password) throw(Core::Exception);

    void addUser(const UserInfo &userInfo) throw(Core::Exception);
    void updateUser(unsigned long uid, const UserInfo &userInfo) throw(Core::Exception);
    void deleteUser(unsigned long uid) throw(Core::Exception);

    void addGroup(const GroupInfo &groupInfo) throw(Core::Exception);
    void updateGroup(unsigned long gid, const GroupInfo &groupInfo) throw(Core::Exception);
    void deleteGroup(unsigned long gid) throw(Core::Exception);

    void addUserToGroup(unsigned long uid, unsigned long gid) throw(Core::Exception);
    void deleteUserFromGroup(unsigned long uid, unsigned long gid) throw(Core::Exception);
};

}
}

#endif /* MAD_SERVER_USERMANAGER_H_ */