/*
 * UserListPacket.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 "UserListPacket.h"
#include <cstring>
#include <sstream>

namespace Mad {
namespace Net {
namespace Packets {

void UserListPacket::assemblePacket() {
  std::string str;

  for(std::vector<Common::UserInfo>::iterator user = userList.begin(); user != userList.end(); ++user)
    str += user->getUsername() + "\n" + user->getFullName() + "\n";

  setLength(sizeof(uint32_t) + sizeof(UserData)*userList.size() + str.length());

  nUsers = (uint32_t*)rawData->data;
  userData = (UserData*)(rawData->data + sizeof(uint32_t));
  charData = (char*)(rawData->data + sizeof(uint32_t) + sizeof(UserData)*userList.size());

  std::memcpy(charData, str.c_str(), str.length());

  *nUsers = htonl(userList.size());

  for(size_t i = 0; i < userList.size(); ++i) {
    userData[i].uid = htonl((uint32_t)userList[i].getUid());
    userData[i].gid = htonl((uint32_t)userList[i].getGid());
  }
}

void UserListPacket::parsePacket() {
  userList.clear();

  if(getLength() < sizeof(uint16_t))
    return;

  nUsers = (uint32_t*)rawData->data;
  userList.resize(ntohl(*nUsers));

  if(getLength() < sizeof(uint32_t) + sizeof(UserData)*userList.size())
    setLength(sizeof(uint32_t) + sizeof(UserData)*userList.size());

  nUsers = (uint32_t*)rawData->data;
  userData = (UserData*)(rawData->data + sizeof(uint32_t));
  charData = (char*)(rawData->data + sizeof(uint32_t) + sizeof(UserData)*userList.size());

  std::istringstream stream(std::string(charData, getLength() - (sizeof(uint32_t)+sizeof(UserData)*userList.size())));

  for(size_t i = 0; i < userList.size(); ++i) {
    userList[i].setUid(ntohl(userData[i].uid));
    userList[i].setGid(ntohl(userData[i].gid));

    if(!stream.eof()) {
      std::string str;

      std::getline(stream, str);
      userList[i].setUsername(str);
      std::getline(stream, str);
      userList[i].setFullName(str);
    }
  }
}

}
}
}