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/*
 * UserCommands.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 "UserCommands.h"
#include "CommandParser.h"

#include <Common/Logger.h>
#include <Common/RequestManager.h>

#include <Common/Requests/GroupListRequest.h>
#include <Common/Requests/GroupUserListRequest.h>
#include <Common/Requests/UserInfoRequest.h>
#include <Common/Requests/UserListRequest.h>
#include <Common/Requests/UserGroupListRequest.h>

#include <iostream>


namespace Mad {
namespace Client {

void UserCommands::userInfoCommand(const std::vector<std::string> &args, Common::Connection *connection) {
  if(args.size() == 1) {
    Common::Logger::logf(Common::Logger::ERROR, "%s: No user id given.", args[0].c_str());
    CommandParser::printUsage("user_info");
    return;
  }
  if(args.size() > 2) {
    Common::Logger::logf(Common::Logger::ERROR, "%s: Too many arguments.", args[0].c_str());
    CommandParser::printUsage("user_info");
    return;
  }

  char *endptr;
  unsigned long uid = std::strtoul(args[1].c_str(), &endptr, 10);
  if(args[1].empty() || *endptr != '\0') {
    Common::Logger::logf(Common::Logger::ERROR, "%s: Unable to parse user id.", args[0].c_str());
    CommandParser::printUsage("user_info");
    return;
  }

  boost::shared_ptr<Common::Requests::UserInfoRequest> request(new Common::Requests::UserInfoRequest(uid));
  Common::RequestManager::get()->sendRequest(connection, request);
  request->wait();

  std::pair<boost::shared_ptr<const Common::XmlPacket>, Net::Exception> result = request->getResult();

  if(!result.first || result.second) {
    Common::Logger::logf(Common::Logger::ERROR, "An error occurred during your request: %s.", result.second.strerror().c_str());
  }
  else {
    const Common::XmlPacket &packet = *result.first;

    std::cout << "  " << (unsigned long)packet["uid"] << ", " << (unsigned long)packet["gid"] << ", " << (const std::string&)packet["username"] << ", "
    << (const std::string&)packet["fullName"] << std::endl << std::endl;
  }
}

void UserCommands::listUsersCommand(const std::vector<std::string> &args _UNUSED_PARAMETER_, Common::Connection *connection) {
  boost::shared_ptr<Common::Requests::UserListRequest> request(new Common::Requests::UserListRequest);

  Common::RequestManager::get()->sendRequest(connection, request);
  request->wait();

  std::pair<boost::shared_ptr<const Common::XmlPacket>, Net::Exception> result = request->getResult();

  if(!result.first || result.second) {
    Common::Logger::logf(Common::Logger::ERROR, "An error occurred during your request: %s.", result.second.strerror().c_str());
  }
  else {
    const Common::XmlPacket::Element &users = (*result.first)["users"];

    if(users.isEmpty()) {
      std::cout << "User list is empty." << std::endl;
    }
    else {
      std::cout << "Found " << users.getSize() << " user" << (users.getSize()==1 ? "" : "s") << ":" << std::endl;


      for(size_t i = 0; i < users.getSize(); ++i)
        std::cout << "  " << (unsigned long)users[i]["uid"] << ", " << (unsigned long)users[i]["gid"] << ", " << (const std::string&)users[i]["username"] << ", " << (const std::string&)users[i]["fullName"] << std::endl;
    }

    std::cout << std::endl;
  }
}

void UserCommands::listUserGroupsCommand(const std::vector<std::string> &args, Common::Connection *connection) {
  if(args.size() == 1) {
    Common::Logger::logf(Common::Logger::ERROR, "%s: No user id given.", args[0].c_str());
    CommandParser::printUsage("list_user_groups");
    return;
  }
  if(args.size() > 2) {
    Common::Logger::logf(Common::Logger::ERROR, "%s: Too many arguments.", args[0].c_str());
    CommandParser::printUsage("list_user_groups");
    return;
  }

  char *endptr;
  unsigned long uid = std::strtoul(args[1].c_str(), &endptr, 10);
  if(args[1].empty() || *endptr != '\0') {
    Common::Logger::logf(Common::Logger::ERROR, "%s: Unable to parse user id.", args[0].c_str());
    CommandParser::printUsage("list_user_groups");
    return;
  }

  boost::shared_ptr<Common::Requests::UserGroupListRequest> request(new Common::Requests::UserGroupListRequest(uid));
  Common::RequestManager::get()->sendRequest(connection, request);
  request->wait();

  std::pair<boost::shared_ptr<const Common::XmlPacket>, Net::Exception> result = request->getResult();

  if(!result.first || result.second) {
    Common::Logger::logf(Common::Logger::ERROR, "An error occurred during your request: %s.", result.second.strerror().c_str());
  }
  else {
    const Common::XmlPacket::Element &groups = (*result.first)["groups"];

    if(groups.isEmpty()) {
      std::cout << "The user isn't member of any group." << std::endl;
    }
    else {

      std::cout << "User is member of " << groups.getSize() << " group" << (groups.getSize()==1 ? "" : "s") << ":" << std::endl;


      for(size_t i = 0; i < groups.getSize(); ++i)
        std::cout << "  " << (unsigned long)groups[i]["gid"] << std::endl;
    }

    std::cout << std::endl;
  }
}

void UserCommands::listGroupsCommand(const std::vector<std::string> &args _UNUSED_PARAMETER_, Common::Connection *connection) {
  boost::shared_ptr<Common::Requests::GroupListRequest> request(new Common::Requests::GroupListRequest);

  Common::RequestManager::get()->sendRequest(connection, request);
  request->wait();

  std::pair<boost::shared_ptr<const Common::XmlPacket>, Net::Exception> result = request->getResult();

  if(!result.first || result.second) {
    Common::Logger::logf(Common::Logger::ERROR, "An error occurred during your request: %s.", result.second.strerror().c_str());
  }
  else {
    const Common::XmlPacket::Element &groups = (*result.first)["groups"];

    if(groups.isEmpty()) {
      std::cout << "Group list is empty." << std::endl;
    }
    else {
      std::cout << "Found " << groups.getSize() << " group" << (groups.getSize()==1 ? "" : "s") << ":" << std::endl;


      for(size_t i = 0; i < groups.getSize(); ++i)
        std::cout << "  " << (unsigned long)groups[i]["gid"] << ", " << (const std::string&)groups[i]["name"] << std::endl;
    }

    std::cout << std::endl;
  }
}

void UserCommands::listGroupUsersCommand(const std::vector<std::string> &args, Common::Connection *connection) {
  if(args.size() == 1) {
    Common::Logger::logf(Common::Logger::ERROR, "%s: No group id given.", args[0].c_str());
    CommandParser::printUsage("list_group_users");
    return;
  }
  if(args.size() > 2) {
    Common::Logger::logf(Common::Logger::ERROR, "%s: Too many arguments.", args[0].c_str());
    CommandParser::printUsage("list_group_users");
    return;
  }

  char *endptr;
  unsigned long gid = std::strtoul(args[1].c_str(), &endptr, 10);
  if(args[1].empty() || *endptr != '\0') {
    Common::Logger::logf(Common::Logger::ERROR, "%s: Unable to parse group id.", args[0].c_str());
    CommandParser::printUsage("list_group_users");
    return;
  }

  boost::shared_ptr<Common::Requests::GroupUserListRequest> request(new Common::Requests::GroupUserListRequest(gid));
  Common::RequestManager::get()->sendRequest(connection, request);
  request->wait();

  std::pair<boost::shared_ptr<const Common::XmlPacket>, Net::Exception> result = request->getResult();

  if(!result.first || result.second) {
    Common::Logger::logf(Common::Logger::ERROR, "An error occurred during your request: %s.", result.second.strerror().c_str());
  }
  else {
    const Common::XmlPacket::Element &users = (*result.first)["users"];

    if(users.isEmpty()) {
      std::cout << "The group doesn't have any members." << std::endl;
    }
    else {

      std::cout << "The group has " << users.getSize() << " member" << (users.getSize()==1 ? "" : "s") << ":" << std::endl;


      for(size_t i = 0; i < users.getSize(); ++i)
        std::cout << "  " << (unsigned long)users[i]["uid"] << std::endl;
    }

    std::cout << std::endl;
  }
}

}
}