tdemultimedia/libkcddb/asynchttplookup.cpp

/*
  Copyright (C) 2002 Rik Hemsley (rikkus) <rik@kde.org>
  Copyright (C) 2002 Benjamin Meyer <ben-devel@meyerhome.net>

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Library General Public
  License as published by the Free Software Foundation; either
  version 2 of the License, or (at your option) any later version.

  This library 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
  Library General Public License for more details.

  You should have received a copy of the GNU Library General Public License
  along with this library; see the file COPYING.LIB.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  Boston, MA 02110-1301, USA.
*/

#include <tqstringlist.h>
#include <tqapplication.h>

#include <kdebug.h>
#include <kio/job.h>

#include "asynchttplookup.h"

namespace KCDDB
{
  AsyncHTTPLookup::AsyncHTTPLookup()
    : HTTPLookup()
  {
    block_ = false;
  }

  AsyncHTTPLookup::~AsyncHTTPLookup()
  {
    // Empty.
  }

    CDDB::Result
  AsyncHTTPLookup::lookup
  (
    const TQString         & hostName,
    uint                    port,
    const TrackOffsetList & trackOffsetList
  )
  {
    if ( trackOffsetList.count() < 3 )
      return UnknownError;

    trackOffsetList_ = trackOffsetList;

    connect( this, TQT_SIGNAL( queryReady() ), TQT_SLOT( slotQueryReady() ) );
    connect( this, TQT_SIGNAL( readReady() ), TQT_SLOT( requestCDInfoForMatch() ) );

    initURL( hostName, port );

    // Run a query.
    result_ = runQuery();

    return result_;
  }

    CDDB::Result
  AsyncHTTPLookup::runQuery()
  {
    data_ = TQByteArray();
    state_ = WaitingForQueryResponse;

    result_ = sendQuery();

    return result_;
  }

    void
  AsyncHTTPLookup::slotQueryReady()
  {
    kdDebug(60010) << "Matches Found: " <<  matchList_.count() << endl;

    if ( Success != result_ )
    {
      emit finished( result_ );
      return;
    }

    requestCDInfoForMatch();
  }

    void
  AsyncHTTPLookup::requestCDInfoForMatch()
  {
    if ( matchList_.isEmpty() )
    {
      result_ = cdInfoList_.isEmpty()? NoRecordFound : Success;
      emit finished( result_ );
      return;
    }

    CDDBMatch match = matchList_.first();
    matchList_.remove(  match );

    data_ = TQByteArray();
    state_ = WaitingForReadResponse;

    result_ = sendRead( match );

    if ( Success != result_ )
      emit finished( result_ );
  }

    void
  AsyncHTTPLookup::slotData( KIO::Job *, const TQByteArray &data )
  {
    if (data.size() > 0)
    {
      TQDataStream stream(data_, IO_WriteOnly | IO_Append);
      stream.writeRawBytes(data.data(), data.size());
    }
  }

    void
  AsyncHTTPLookup::slotResult( KIO::Job *job )
  {
    if ( 0 != job->error() )
    {
      result_ = ServerError;
      if ( !block_ )
        emit queryReady();
      return;
    }

    jobFinished();
  }

    CDDB::Result
  AsyncHTTPLookup::fetchURL()
  {
    kdDebug(60010) << "About to fetch: " << cgiURL_.url() << endl;

    KIO::TransferJob* job = KIO::get( cgiURL_, false, false );

    if ( 0 == job )
      return ServerError;

    connect( job, TQT_SIGNAL( data( KIO::Job *, const TQByteArray & ) ),
          TQT_SLOT( slotData( KIO::Job *, const TQByteArray & ) ) );
    connect( job, TQT_SIGNAL( result( KIO::Job * ) ),
          TQT_SLOT( slotResult( KIO::Job * ) ) );

    return Success;
  }

}

#include "asynchttplookup.moc"

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