/************************************************************************
*
* Copyright 2011 Jakob Leben (jakob.leben@gmail.com)
*
* This file is part of SuperCollider Qt GUI.
*
* 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) 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 "LanguageClient.h"
#include "QcApplication.h"
#include "QtCollider.h"
#include "QObjectProxy.h"

#include <PyrKernel.h>
#include <PyrLexer.h>

#include <qmath.h>
#include <QWidget>

extern double elapsedTime();

using namespace QtCollider;

LangClient::LangClient( const char* name )
: SC_TerminalClient( name )
{
}

void LangClient::commandLoop()
{
  int exit_code = QcApplication::instance()->exec();
  SC_TerminalClient::quit(exit_code);
}

void LangClient::daemonLoop()
{
  commandLoop();
}

void LangClient::sendSignal( Signal sig )
{
  if (sig == sig_sched) {
    QApplication::postEvent( this, new SCRequestEvent(Event_SCRequest_Tick) );
  } else {
    SC_TerminalClient::sendSignal( sig );
    QApplication::postEvent( this, new SCRequestEvent(Event_SCRequest_Work) );
  }
}

void LangClient::onQuit( int exitCode )
{
  QApplication::postEvent( this, new SCRequestEvent( Event_SCRequest_Quit, exitCode ) );
}

void LangClient::onLibraryShutdown()
{
  QWidgetList windows = QApplication::topLevelWidgets();
  Q_FOREACH( QWidget *w, windows )
    w->hide();
}

void LangClient::customEvent( QEvent *e )
{
  int type = e->type();
  switch( type ) {
  case Event_SCRequest_Tick:
    tick();

  case Event_SCRequest_Work:
    QApplication::removePostedEvents( this, Event_SCRequest_Work );
    mIoService.poll();
    break;
  case Event_SCRequest_Quit:
  {
    int code = static_cast<SCRequestEvent*>(e)->data.toInt();
    qcDebugMsg( 1, QStringLiteral("Quit requested with code %1").arg(code) );
    qApp->exit( code );
    break;
  }
  default: ;
  }
}

void LangClient::tick()
{
  double secs;
  lock();
  bool haveNext = tickLocked( &secs );
  unlock();

  flush();

  if( haveNext ) {
    secs -= elapsedTime();
    secs *= 1000;
    int ti = qMax(0, qCeil(secs));
    qcDebugMsg(2, QStringLiteral("next at %1").arg(ti) );
    appClockTimer.start( ti, this );
  } else
	  appClockTimer.stop();
}

void LangClient::timerEvent(QTimerEvent * e)
{
  if( e->timerId() == appClockTimer.timerId() )
    tick();
}
