/*
 * 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 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/>.
 */

#include "config.h"

#include "Core/ConfigManager.h"

#include "Common/ClientConnection.h"
#include "Common/UserManager.h"
#include "Common/Backends/NetworkUserBackend.h"
#include "Common/RequestManager.h"
#include "Common/Requests/IdentifyRequest.h"

#include "Client/Application.h"
#include "Client/CommandParser.h"
#include "Client/ConsoleUtil.h"
#include "Client/InformationManager.h"
#include "Client/Authenticators/ChallengeResponseAuthenticator.h"
#include "Client/Authenticators/PasswordAuthenticator.h"

#include <boost/regex.hpp>

#include <cstdio>
#include <iostream>

#include <histedit.h>


using namespace Mad;


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

static char* prompt(EditLine* /*e*/) {
  return const_cast<char*>("mad> ");
}

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

  Client::Application application;

  application.getConfigManager()->configure();

  Common::ClientConnection *connection = new Common::ClientConnection(&application);
  application.getRequestManager()->registerConnection(connection);

  try {
    std::string server = "localhost", port = "6666";

    if(argc == 2) {
      server = argv[1];
    }

    static const boost::regex r("(.+):(\\d+)", boost::regex_constants::perl);

    boost::smatch match;
    if(boost::regex_match(server, match, r)) {
      server = match[1].str();
      port = match[2].str();
    }

    boost::asio::ip::tcp::resolver resolver(application.getIOService());
    boost::asio::ip::tcp::resolver::query query(server, port);
    boost::asio::ip::tcp::resolver::iterator entry = resolver.resolve(query);


    connection->connect(entry->endpoint());

    std::cerr << "Connecting to " << entry->host_name() << "..." << std::flush;

    connection->waitWhileConnecting();

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

    {
      std::cerr << "Login: " << std::flush;
      Core::String username = Core::String::getline(std::cin);
      Core::String password = Client::ConsoleUtil::readPassword("Password: ");

      try {
        Client::Authenticators::ChallengeResponseAuthenticator::authenticate(&application, connection, username, password);
      }
      catch(Core::Exception e) {
        if(e.getErrorCode() != Core::Exception::NOT_AVAILABLE)
          throw e;

        Client::Authenticators::PasswordAuthenticator::authenticate(&application, connection, username, password);
      }
    }

    std::cerr << "Login successful." << std::endl << std::endl;
    std::cerr << "Receiving host list..." << std::flush;

    application.getInformationManager()->updateDaemonList(connection);
    application.getInformationManager()->waitWhileUpdating();

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

    boost::shared_ptr<Common::Backends::NetworkUserBackend> networkUserBackend(new Common::Backends::NetworkUserBackend(&application, connection));
    application.getUserManager()->registerBackendCached(networkUserBackend);

    Client::CommandParser commandParser(&application, connection);

    EditLine *el = el_init(argv[0], stdin, stdout, stderr);

    el_set(el, EL_EDITOR, "vi");
    el_set(el, EL_PROMPT, &prompt);

    HistEvent histEv;
    History *hist = history_init();
    history(hist, &histEv, H_SETSIZE, 800);

    el_set(el, EL_HIST, history, hist);

    while(connection->isConnected() && !commandParser.willDisconnect()) {
      const char *cmd = el_gets(el, 0);

      if(!cmd) {
        commandParser.requestDisconnect();
      }
      else if(*cmd) {
        commandParser.parse(Core::String::fromLocale(cmd));
        history(hist, &histEv, H_ENTER, cmd);
      }
      else continue;
    }

    history_end(hist);
    el_end(el);

    connection->waitWhileConnected();

    application.getUserManager()->unregisterBackend(networkUserBackend);
  }
  catch(Core::Exception &e) {
    application.log(Core::Logger::LOG_CRITICAL, Core::Format("Error: %1%") % e);
  }

  application.getRequestManager()->unregisterConnection(connection);
  delete connection;

  return 0;
}