/*
 * UserManager.cpp
 *
 * 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/>.
 */

#include "UserManager.h"
#include "UserCache.h"

#include <iostream>

namespace Mad {
namespace Common {

bool UserManager::Compare::operator() (boost::shared_ptr<UserBackend> b1, boost::shared_ptr<UserBackend> b2) {
  if(b1->getPriority() == b2->getPriority())
    return (b1.get() > b2.get());
  else
    return (b1->getPriority() > b2->getPriority());
}


void UserManager::registerBackendCached(boost::shared_ptr<UserBackend> backend) {
  {
    boost::lock_guard<boost::shared_mutex> lock(mutex);
    backends.insert(std::make_pair(backend, boost::shared_ptr<UserCache>(new UserCache(backend))));
  }
}


boost::shared_ptr<const std::map<unsigned long, UserInfo> > UserManager::getUserList() throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      return backend->second->getUserList();
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

boost::shared_ptr<const UserInfo> UserManager::getUserInfo(unsigned long uid) throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      return backend->second->getUserInfo(uid);
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

boost::shared_ptr<const UserInfo> UserManager::getUserInfoByName(const std::string &name) throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      return backend->second->getUserInfoByName(name);
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

boost::shared_ptr<const std::set<unsigned long> > UserManager::getUserGroupList(unsigned long uid) throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      return backend->second->getUserGroupList(uid);
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

boost::shared_ptr<const std::map<unsigned long, GroupInfo> > UserManager::getGroupList() throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::shared_ptr<const std::map<unsigned long, GroupInfo> > ret;

  {
    boost::lock_guard<boost::shared_mutex> lock(mutex);

    for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
      try {
        return backend->second->getGroupList();
      }
      catch(Core::Exception e2) {
        if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
          e = e2;
      }
    }
  }

  throw e;
}

boost::shared_ptr<const GroupInfo> UserManager::getGroupInfo(unsigned long gid) throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      return backend->second->getGroupInfo(gid);
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

boost::shared_ptr<const GroupInfo> UserManager::getGroupInfoByName(const std::string &name) throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      return backend->second->getGroupInfoByName(name);
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

boost::shared_ptr<const std::set<unsigned long> > UserManager::getGroupUserList(unsigned long gid) throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      return backend->second->getGroupUserList(gid);
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

boost::shared_ptr<const std::multimap<unsigned long, unsigned long> > UserManager::getFullUserGroupList() throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      return backend->second->getFullUserGroupList();
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

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

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      backend->second->setPassword(uid, password);
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

void UserManager::addUser(const UserInfo &userInfo) throw(Core::Exception) {
  Core::Exception e(Core::Exception::NOT_IMPLEMENTED);

  boost::lock_guard<boost::shared_mutex> lock(mutex);

  for(BackendMap::iterator backend = backends.begin(); backend != backends.end(); ++backend) {
    try {
      backend->second->addUser(userInfo);
    }
    catch(Core::Exception e2) {
      if(e.getErrorCode() == Core::Exception::NOT_IMPLEMENTED && e2.getErrorCode() != Core::Exception::NOT_IMPLEMENTED)
        e = e2;
    }
  }

  throw e;
}

}
}