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/*
 * madc.cpp
 *
 * Copyright (C) 2008 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 "Net/FdManager.h"
#include "Net/IPAddress.h"
#include "Net/ThreadManager.h"
#include "Common/ClientConnection.h"
#include "Common/ConfigManager.h"
#include "Common/Logger.h"
#include "Common/RequestManager.h"
#include "Client/CommandParser.h"
#include "Client/InformationManager.h"

#include <iostream>

#include <readline/readline.h>
#include <readline/history.h>

using namespace Mad;


static void usage(const std::string &cmd) {
  std::cerr << "Usage: " << cmd << " address[:port]" << std::endl;
}

static void handleCommand(char *cmd) {
  if(!cmd)
    Client::CommandParser::get()->requestDisconnect();
  else if(!*cmd)
    return;
  else {
    Client::CommandParser::get()->parse(cmd);
    add_history(cmd);
  }

  if(Client::CommandManager::get()->requestsActive()) {
    rl_callback_handler_remove();
    Net::FdManager::get()->setFdEvents(STDIN_FILENO, 0);
  }
}

static void charHandler(short events) {
  if(events & POLLIN)
    rl_callback_read_char();
}

static void activateReadline() {
  if(Client::CommandManager::get()->willDisconnect())
    return;

  rl_callback_handler_install("mad> ", handleCommand);
  Net::FdManager::get()->setFdEvents(STDIN_FILENO, POLLIN);
}

int main(int argc, char *argv[]) {
  if(argc != 2) {
    usage(argv[0]);
    std::exit(1);
  }

  Net::ThreadManager::get()->init();
  Client::InformationManager::get()->init();

  Common::ConfigManager::get()->finish();

  Common::ClientConnection *connection = new Common::ClientConnection;

  try {
    connection->connect(Net::IPAddress(argv[1]));

    std::cerr << "Connecting to " << argv[1] << "..." << std::flush;

    while(connection->isConnecting())
      usleep(100000);

    std::cerr << " connected." << std::endl;

    Common::RequestManager::get()->registerConnection(connection);

    std::cerr << "Receiving host list..." << std::flush;

    Client::InformationManager::get()->updateDaemonList(connection);

    while(Client::InformationManager::get()->isUpdating())
      usleep(100000);

    std::cerr << " done." << std::endl << std::endl;

    Client::CommandParser::get()->setConnection(connection);
    Client::CommandManager::get()->signalFinished().connect(&activateReadline);

    Net::FdManager::get()->registerFd(STDIN_FILENO,&charHandler);

    activateReadline();

    while(connection->isConnected())
      usleep(100000);

    Net::FdManager::get()->unregisterFd(STDIN_FILENO);

    Common::RequestManager::get()->unregisterConnection(connection);
  }
  catch(Net::Exception &e) {
    Common::Logger::logf(Common::Logger::CRITICAL, "Connection error: %s", e.strerror().c_str());
  }

  delete connection;

  Common::Initializable::deinit();

  return 0;
}