/*
GNU General Public License version 3 notice

Copyright (C) 2012 Mihawk <luiz@netdome.biz>. All rights reserved.

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 "Client.h"
#include <QString>
#include <stdio.h>
#include <QTcpSocket>
#include <QStringList>
#include <QTime>
#include <QTimer>
#include <QFile>
#include "App.h"
#include "Settings.h"

static QRegExp rxColoredPattern("&c[0-9a-fA-F]{3}");
static QRegExp rxBrackets("\\{[^}]*\\}");

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Client::Client(App *app, ActiveClient* ac):
  QWClient(),
  myActiveClient(ac),
  myApp(app),
  myOnServerFlag(false),
  mySpamMutedFlag(false),
  myQWMutedFlag(false),
  myKeepNickTimer(new QTimer()),
  myFloodTimer(new QTimer()),
  myBroadcastFloodTimer(new QTimer()),
  mySPDetectionTimer(new QTimer()),
  mySPSupport(false),
  mySPAutoDetect(true),
  myMaxClients(0),
  myCmdScheduledTimer(new QTimer())
{
  rxBrackets.setMinimal(true);
  myKeepNickTimer->setSingleShot(true);
  myFloodTimer->setSingleShot(true);
  myBroadcastFloodTimer->setSingleShot(true);
  mySPDetectionTimer->setSingleShot(true);
  myCmdScheduledTimer->setSingleShot(true);
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Client::~Client()
{
  delete myKeepNickTimer;
  delete myFloodTimer;
  delete myBroadcastFloodTimer;
  delete mySPDetectionTimer;
  delete myCmdScheduledTimer;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::connect(const char *host, quint16 port)
{
  setPing(13);
  QWClient::connect(host, port);
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::say(const QString &msg, const QString &nickName)
{
  QString cmd("say ");

  if(!nickName.isEmpty() && mySPSupport)
    cmd.append("s-p \"" + nickName + "\" ");

  cmd.append(msg);

  sendCmd(cmd.toLatin1().data());
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::setTeam(const QString &msg)
{
  sendCmd(QString("setinfo \"team\" \"" + msg + "\"").toLatin1().data());
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::disconnect()
{
  QWClient::disconnect();
  myOnServerFlag = false;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::print(const QString &msg)
{
  QString str;

  str = "[" + QTime::currentTime().toString(Qt::ISODate) + "] " + QString(host()) + ":" + QString::number(port()) + "> " + msg;
  QByteArray b = str.toLatin1();
  Client::stripColor(b.data());
  str = QString::fromLatin1(b.data());

  myApp->print(str);
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::setPlayerList(PlayerList &playerList)
{
  myPlayerList = playerList;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onDisconnect()
{
  print("Disconnected..\n");
  myOnServerFlag = false;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool Client::isQWMuted() const
{
  return myQWMutedFlag;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool Client::isSpamMuted() const
{
  return mySpamMutedFlag;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::parsePrintedLine()
{
  // Deletes invalid map for redownloading next retry
  if(!myOnServerFlag)
  {
    QRegExp rx("^Map model file does not match \\((.+)\\),");
    if(rx.indexIn(myPrintLine) != -1)
    {
      print("Invalid map, deleting this map for redownload on next retry.\n");
      QFile::remove(quakeDir() + "/" + gameDir() + "/" + rx.cap(1));
      return;
    }
  }

  // Detects whether s-p command is supported
  if(mySPDetectionTimer->isActive())
  {
    if(myPrintLine.startsWith(Settings::globalInstance()->botName() + ": s-p"))
    {
      mySPSupport = false;
      mySPDetectionTimer->stop();
      setAutoDetectSP(false); // Don't try detecting again on next map
    }
    else if(myPrintLine.startsWith("usage: s-p id/name txt"))
    {
      mySPSupport = true;
      mySPDetectionTimer->stop();
      setAutoDetectSP(false); // Don't try detecting again on next map
    }
  }

  // Find the player that printed this line of text
  Player  player, bestPlayer;
  quint16 lastMatchSize = 0;

  foreach(player, myPlayerList)
  {
    if(player.spectator && myPrintLine.startsWith("[SPEC] " + player.name))
    {
      if(lastMatchSize < (player.name.size() + 7))
      {
        lastMatchSize = (player.name.size() + 7);
        bestPlayer = player;
      }
      continue;
    }

    if(myPrintLine.startsWith(player.name))
    {
      if(lastMatchSize < player.name.size())
      {
        lastMatchSize = player.name.size();
        bestPlayer = player;
      }
      continue;
    }
  }
  if(!lastMatchSize)
    return;

  QString nick(bestPlayer.name);
  if(bestPlayer.spectator)
    nick.prepend("(spec) ");

  QString message(myPrintLine.right(myPrintLine.size() - lastMatchSize));


  QRegExp regex("^:\\s+\\.(spam|qw|help|qw_mute|qw_unmute|spam_mute|spam_unmute|lm|about)\\s*(.+)$");
  if(regex.indexIn(message) == -1)
    return;

  /* Flood prot */
  QTime currentTime = QTime::currentTime();
  int   floodProtTime = Settings::globalInstance()->floodProtTime();
  if(myFloodTimer->isActive())
  {
    if(!myFloodMsgPrinted)
    {
      say("FloodProt: Not so fast, wait " + QString::number(floodProtTime + currentTime.secsTo(myFloodTimerStart)) + " sec(s).", bestPlayer.name);
      myFloodMsgPrinted = true;
    }
    return;
  }
  myFloodTimerStart = currentTime;
  myFloodTimer->start(floodProtTime*1000);
  myFloodMsgPrinted = false;

  QString command = regex.capturedTexts().at(1);
  QString args = regex.capturedTexts().at(2);

  if(command == "help")
  {
    say("Broadcast a message: .qw <message> and .spam <message>", bestPlayer.name);
    say("(Un)Mute: .qw_mute .qw_unmute or .spam_mute .spam_unmute", bestPlayer.name);
    say("Last 5 messages: .lm", bestPlayer.name);
    say("About this bot: .about", bestPlayer.name);
    return;
  }

  if(command == "about")
  {
    say("ServeMe specbots by mihawk & Haudraufwienix, find us on #qwnet @ irc.quakenet.org", bestPlayer.name);
    return;
  }

  if(command == "qw" || command == "spam")
  {
    if(!args.trimmed().size())
    {
      say("The format is ." + command + " <message>.", bestPlayer.name);
      return;
    }

    /* Floodprot for broadcasting commands */
    if(command == "qw" || command == "spam")
    {
      if(myBroadcastFloodTimer->isActive())
      {
        say("FloodProt: Wait " + QString::number(myBroadcastFloodTimer->interval()/1000 + currentTime.secsTo(myBroadcastFloodTimerStart)) + " sec(s) before issuing a new " + command, bestPlayer.name);
        return;
      }

      int time;
      if(command == "qw")
        time = Settings::globalInstance()->qwFloodProtTime();
      else
        time = Settings::globalInstance()->spamFloodProtTime();
      myBroadcastFloodTimerStart = currentTime;
      myBroadcastFloodTimer->start(time*1000);
    }

    // Prepare all strings to be broadcasted
    QString server(QString(host()) + ":" + QString::number(port()));

    // Tries to find the hostname for this ip in the cache
    QString resolvedServer(myApp->serverHostName(server));
    if(!resolvedServer.isEmpty())
      resolvedServer.append(":" + QString::number(port()));
    else
      resolvedServer = server;

    // Internal message to be broadcast within our network of bots (don't need to have namefun parsed)
    // The internal message uses the resolvedServer, because this message doesn't pass tru central, thus
    // the server ip isn't replaced by a hostname automatically
    QString internalMessage("-" + command + "- " + nick + " - " + resolvedServer + " " + QString::number(playerCount()) + "/" + QString::number(myMaxClients) + " : " + args.trimmed());
    myApp->broadcast(internalMessage, myActiveClient);

    // Message that will be broadcast to other networks (needs namefun parsing)
    // this message passes tru central, thus the server ip will be replaced by a hostname
    // automatically
    nick = parseNameFun(nick);
    QString parsedMsg = parseNameFun(args.trimmed());

    server.append(" " + QString::number(playerCount()) + "/" + QString::number(myMaxClients)); // append player count to the server (central needs another parm for this!)

    if(!Settings::globalInstance()->developerMode())
      myApp->requestBroadcast(command, nick, server, parsedMsg);
    else
      myApp->requestBroadcast("dev", nick, server, parsedMsg);

    say("Broadcasting...", bestPlayer.name);

    return;
  }

  if(command == "qw_mute")
  {
    say("Qw frequency muted.", bestPlayer.name);
    myQWMutedFlag = true;
    return;
  }

  if(command == "qw_unmute")
  {
    say("Qw frequency unmuted.", bestPlayer.name);
    myQWMutedFlag = false;
    return;
  }

  if(command == "spam_mute")
  {
    say("Spam frequency muted.", bestPlayer.name);
    mySpamMutedFlag = true;
    return;
  }

  if(command == "spam_unmute")
  {
    say("Spam frequency unmuted.", bestPlayer.name);
    mySpamMutedFlag = false;
    return;
  }

  if(command == "lm")
  {
    QStringList messages = myApp->lastMessages();
    if(!messages.size())
    {
      say("None", bestPlayer.name);
      return;
    }

    QString msg;
    int i = 0;
    foreach(msg, messages)
    {
      if(++i > 5)
        break;

      say(msg, bestPlayer.name);
    }
    return;
  }
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
int Client::playerCount() const
{
  Player c;
  int pc = 0;
  foreach(c, myPlayerList)
  {
    if(c.spectator)
      continue;
    pc++;
  }
  return pc;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::setMaxClients(int maxClients)
{
  myMaxClients = maxClients;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
int Client::maxClients() const
{
  return myMaxClients;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onPrint(int, const char *msg)
{
  if(!strlen(msg))
    return;

  QString text(msg);
  if(text.endsWith('\n'))
  {
    myPrintLine.append(text);
    parsePrintedLine();
    myPrintLine.clear();
  }
  else
  {
    myPrintLine.append(text);
  }
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool Client::isOnServer() const
{
  return myOnServerFlag;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onError(const char *description)
{
  QString desc(description);
  if(desc == "Client Timed Out.")
  {
    print("Error (" + QString(description) + ")\n");
  }
  else
  {
    print("Error (" + QString(description) + ")\n");
  }
  myOnServerFlag = false;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onLevelChanged(int, const char *levelName, float, float, float, float, float, float, float, float, float, float)
{
  print(QString(levelName) + "\n");
  myDownloadProgressPrintedFlag = false;
  mySpamMutedFlag = false;
  myQWMutedFlag = false;

  setPing(13);
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onChallenge()
{
  print("challenge\n");
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onConnection()
{
  print("connection\n");
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onConnected()
{
  print("connected\n");
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onDownloadStarted(const char *fileName)
{
  print("Download started " + QString(fileName) + "\n");
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::run()
{
  // Keep nick... Simply set name again after 30 secs
  if(!myKeepNickTimer->isActive())
  {
    setName(Settings::globalInstance()->botName().toLatin1().data());
    myKeepNickTimer->start(30000);
  }

  // Scheduled commands
  if(!myCmdScheduled.isEmpty() && !myCmdScheduledTimer->isActive())
  {
    sendCmd(myCmdScheduled.toLatin1().data());
    myCmdScheduled.clear();
  }

  QWClient::run();
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onOOBPrint(const char *msg)
{
  print(QString(msg));
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onStuffedCmd(const char *cmd)
{
  QString strCmd(cmd);
  if(strCmd == "skins") //connection sequence complete
  {
    myOnServerFlag = true;

    setPing(Settings::globalInstance()->botPing());
    if(mySPAutoDetect)
      spDetection();
  }
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onDownloadProgress(int percent)
{
  if(!(percent % 10))
  {
    if(!myDownloadProgressPrintedFlag)
    {
      print("Download " + QString::number(percent) + "%\n");
      myDownloadProgressPrintedFlag = true;
    }
  }
  else
  {
    myDownloadProgressPrintedFlag = false;
  }
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::onDownloadFinished()
{
  print("Download 100% finished.\n");
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::setAutoDetectSP(bool autoDetect)
{
  mySPAutoDetect = autoDetect;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::spDetection()
{
  say("s-p");
  mySPDetectionTimer->start(2000);
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
QString Client::parseNameFun(const QString &string)
{
  QByteArray b(string.toLatin1());
  QWClient::stripColor(b.data());
  QString text = QString::fromLatin1(b);
  int pos = 0;
  int index_adj;
  while ((pos = rxBrackets.indexIn(text, pos)) != -1) {
      QString match = rxBrackets.cap(0);
      QString newtext = rxBrackets.cap(0).replace(rxColoredPattern, "");
      newtext = newtext.mid(1, newtext.size()-2);
      index_adj = match.length() - newtext.length();
      text.replace(match, newtext);
      pos += rxBrackets.matchedLength() - index_adj;
  }

  return text;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Client::scheduleCmd(const QString &cmd, int time)
{
  myCmdScheduled = cmd;
  myCmdScheduledTimer->start(time);
}