/*
 * 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 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_COMMON_USERCACHE_H_
#define MAD_COMMON_USERCACHE_H_

#include "export.h"

#include "UserDBBackend.h"

#include <limits>

#include <boost/thread/recursive_mutex.hpp>

namespace Mad {
namespace Common {

class Application;
class UserManager;

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

    Application *application;

    boost::shared_ptr<UserDBBackend> backend;

    boost::recursive_mutex mutex;

    boost::shared_ptr<const std::map<unsigned long, UserInfo> > users;
    boost::shared_ptr<std::map<Core::String, unsigned long> > userNames;
    Core::Exception userException;
    boost::posix_time::ptime userTime;

    boost::shared_ptr<const std::map<unsigned long, GroupInfo> > groups;
    boost::shared_ptr<std::map<Core::String, unsigned long> > groupNames;
    Core::Exception groupException;
    boost::posix_time::ptime groupTime;

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

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

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

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

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

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

    virtual void updateUser(unsigned long uid, const UserInfo &userInfo) throw(Core::Exception) {
      backend->updateUser(uid, userInfo);
    }

    virtual void deleteUser(unsigned long uid) throw(Core::Exception) {
      backend->deleteUser(uid);
    }


    virtual void checkGroupInfo(const GroupInfo &groupInfo) throw(Core::Exception) {
      backend->checkGroupInfo(groupInfo);
    }

    virtual void addGroup(const GroupInfo &groupInfo) throw(Core::Exception) {
      backend->addGroup(groupInfo);
    }

    virtual void updateGroup(unsigned long gid, const GroupInfo &groupInfo) throw(Core::Exception) {
      backend->updateGroup(gid, groupInfo);
    }

    virtual void deleteGroup(unsigned long gid) throw(Core::Exception) {
      backend->deleteGroup(gid);
    }


    virtual void addUserToGroup(unsigned long uid, unsigned long gid) throw(Core::Exception) {
      backend->addUserToGroup(uid, gid);
    }

    virtual void deleteUserFromGroup(unsigned long uid, unsigned long gid) throw(Core::Exception) {
      backend->deleteUserFromGroup(uid, gid);
    }


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

    UserCache(Application *application0, boost::shared_ptr<UserDBBackend> backend0) : application(application0), backend(backend0),
    userTime(boost::posix_time::not_a_date_time), groupTime(boost::posix_time::not_a_date_time),
    userGroupTime(boost::posix_time::not_a_date_time) {}

  public:
    virtual const Core::String& getName() {
      return backend->getName();
    }
};

}
}

#endif /* MAD_COMMON_USERCACHE_H_ */