/***************************************************************************
*   Copyright (C) 2005-09 by the Quassel Project                          *
*   devel@quassel-irc.org                                                 *
*                                                                         *
*   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 2 of the License, or     *
*   (at your option) version 3.                                           *
*                                                                         *
*   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, write to the                         *
*   Free Software Foundation, Inc.,                                       *
*   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
***************************************************************************/

#include "clientuserinputhandler.h"

#include "buffermodel.h"
#include "client.h"
#include "clientaliasmanager.h"
#include "clientsettings.h"
#include "execwrapper.h"
#include "ircuser.h"
#include "network.h"
#include "types.h"
#include "bufferinfo.h"
#include "clientbufferviewconfig.h"
#include "clientbufferviewmanager.h"
#include "messagemodel.h"

#include <QDateTime>

ClientUserInputHandler::ClientUserInputHandler(QObject *parent)
: BasicHandler(parent)
{
  TabCompletionSettings s;
  s.notify("CompletionSuffix", this, SLOT(completionSuffixChanged(QVariant)));
  completionSuffixChanged(s.completionSuffix());
}

void ClientUserInputHandler::completionSuffixChanged(const QVariant &v) {
  QString suffix = v.toString();
  QString letter = "A-Za-z";
  QString special = "\x5b-\x60\x7b-\x7d";
  _nickRx = QRegExp(QString("^([%1%2][%1%2\\d-]*)%3").arg(letter, special, suffix).trimmed());
}

// this would be the place for a client-side hook
void ClientUserInputHandler::handleUserInput(const BufferInfo &bufferInfo, const QString &msg) {
  if(msg.isEmpty())
    return;

  if(!msg.startsWith('/')) {
    if(_nickRx.indexIn(msg) == 0) {
      const Network *net = Client::network(bufferInfo.networkId());
      IrcUser *user = net ? net->ircUser(_nickRx.cap(1)) : 0;
      if(user)
        user->setLastSpokenTo(bufferInfo.bufferId(), QDateTime::currentDateTime().toUTC());
    }
  }

  AliasManager::CommandList clist = Client::aliasManager()->processInput(bufferInfo, msg);

  for(int i = 0; i < clist.count(); i++) {
    QString cmd = clist.at(i).second.section(' ', 0, 0).remove(0, 1).toUpper();
    QString payload = clist.at(i).second.section(' ', 1);
    handle(cmd, Q_ARG(BufferInfo, clist.at(i).first), Q_ARG(QString, payload));
  }
}

void ClientUserInputHandler::defaultHandler(const QString &cmd, const BufferInfo &bufferInfo, const QString &text) {
  QString command = QString("/%1 %2").arg(cmd, text);
  emit sendInput(bufferInfo, command);
}

void ClientUserInputHandler::handleExec(const BufferInfo &bufferInfo, const QString &execString) {
  ExecWrapper *exec = new ExecWrapper(this); // gets suicidal when it's done
  exec->start(bufferInfo, execString);
}

void ClientUserInputHandler::handleJoin(const BufferInfo &bufferInfo, const QString &text) {
  if(text.isEmpty()) {
    Client::messageModel()->insertErrorMessage(bufferInfo, tr("/JOIN expects a channel"));
    return;
  }
  switchBuffer(bufferInfo.networkId(), text.section(' ', 0, 0));
  // send to core
  defaultHandler("JOIN", bufferInfo, text);
}

void ClientUserInputHandler::handleQuery(const BufferInfo &bufferInfo, const QString &text) {
  if(text.isEmpty()) {
    Client::messageModel()->insertErrorMessage(bufferInfo, tr("/QUERY expects at least a nick"));
    return;
  }
  switchBuffer(bufferInfo.networkId(), text.section(' ', 0, 0));
  // send to core
  defaultHandler("QUERY", bufferInfo, text);
}

void ClientUserInputHandler::switchBuffer(const NetworkId &networkId, const QString &bufferName) {
  BufferId newBufId = Client::networkModel()->bufferId(networkId, bufferName);
  if(!newBufId.isValid()) {
    Client::bufferModel()->switchToBufferAfterCreation(networkId, bufferName);
  }
  else {
    Client::bufferModel()->switchToBuffer(newBufId);
    // unhide the buffer
    ClientBufferViewManager *clientBufferViewManager = Client::bufferViewManager();
    QList<ClientBufferViewConfig*> bufferViewConfigList = clientBufferViewManager->clientBufferViewConfigs();
    foreach (ClientBufferViewConfig *bufferViewConfig, bufferViewConfigList) {
      if (bufferViewConfig->temporarilyRemovedBuffers().contains(newBufId)) {
        bufferViewConfig->addBuffer(newBufId, bufferViewConfig->bufferList().length());
        //if (bufferViewConfig->sortAlphabetically()) {
          // TODO we need to trigger a sort here, but can't reach the model required
          // to get a bufferviewfilter, as the bufferviewmanager only managers configs
          //BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
        //}
      }
    }
  }
}
