/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

// System includes

#include <QTimer>

#include <QSettings>

// User includes

#include "radioenginewrapper_win32_p.h"

#include "radiosettings.h"

#include "radiosettings_p.h"

#include "radiologger.h"

#include "radio_global.h"

#include "radiostationhandlerif.h"

#include "radioenginewrapperobserver.h"

//#include "t_radiodataparser.h"

static RadioEngineWrapperPrivate* theInstance = 0;

const QString KKeyFrequency = "CurrentFreq";

const QString KKeyOffline = "Offline";

const uint KScanFrequencies[] = {

    87600000,

    88000000,

    89400000,

    96000000,

    97600000,

    100600000,

    101300000,

    102600000,

    103500000,

    104100000,

    105500000,

    107500000

};

const int KScanFrequencyCount = sizeof( KScanFrequencies ) / sizeof( KScanFrequencies[0] );

/*!

 *

 */

RadioEngineWrapperPrivate::RadioEngineWrapperPrivate( RadioEngineWrapper* wrapper,

                                                      RadioStationHandlerIf& stationHandler ) :

    q_ptr( wrapper ),

    mStationHandler( stationHandler ),

    mTuneTimer( new QTimer( this ) ),

    mTuneReason( 0 ),

    mUseLoudspeaker( false ),

    mAntennaAttached( true ),

    mFrequency( 0 ),

    mNextFrequency( 0 ),

    mVolume( 5 ),

    mMaxVolume( 10000 ),

    mFrequencyStepSize( 50000 ),

    mRegionId( RadioRegion::Default ),

    mMinFrequency( 87500000 ),

    mMaxFrequency( 108000000 )

{

    ::theInstance = this;

    mEngineSettings.reset( new QSettings( "Nokia", "QtFmRadio" ) );

    mFrequency = mEngineSettings->value( KKeyFrequency ).toUInt();

    if ( mFrequency == 0 ) {

        mFrequency = mMinFrequency;

    }

    connectAndTest( mTuneTimer, SIGNAL(timeout()), this, SLOT(frequencyEvent()) );

    mTuneTimer->setSingleShot( true );    

}

/*!

 *

 */

RadioEngineWrapperPrivate::~RadioEngineWrapperPrivate()

{

    // Destructor needs to be defined because some member variables that are forward declared

    // in the header are managed by QT's smart pointers and they require that the owning class

    // has a non-inlined destructor. Compiler generates an inlined destructor if it isn't defined.

}

/*!

 *

 */

RadioEngineWrapperPrivate* RadioEngineWrapperPrivate::instance()

{

    return ::theInstance;

}

/*!

 * Initializes the private implementation

 */

void RadioEngineWrapperPrivate::init()

{

    mUseLoudspeaker = false;

    if ( !mUseLoudspeaker ) {

        RUN_NOTIFY_LOOP( mObservers, audioRouteChanged( false ) );

    }

    parseData();

}

/*!

 * Starts up the radio engine

 */

bool RadioEngineWrapperPrivate::isEngineConstructed()

{

    return true;

}

/*!

 * Returns the settings handler owned by the engine

 */

RadioSettingsIf& RadioEngineWrapperPrivate::settings()

{

    if ( !mSettings ) {

        mSettings.reset( new RadioSettings() );

//        mSettings->d_func()->init( &mEngineHandler->ApplicationSettings() );

    }

    return *mSettings;

}

/*!

 * Tunes to the given frequency

 */

void RadioEngineWrapperPrivate::tuneFrequency( uint frequency, const int reason )

{

    mNextFrequency = frequency;

    mTuneReason = reason;

    mTuneTimer->stop();

    mTuneTimer->start( 500 );

}

/*!

 * Tunes to the given frequency after a delay

 */

void RadioEngineWrapperPrivate::tuneWithDelay( uint frequency, const int reason )

{

    mNextFrequency = frequency;

    mTuneReason = reason;

    mTuneTimer->stop();

    mTuneTimer->start( 1500 );

}

/*!

 *

 */

ObserverList& RadioEngineWrapperPrivate::observers()

{

    return mObservers;

}

/*!

 *

 */

void RadioEngineWrapperPrivate::startSeeking( Seeking::Direction direction, const int reason )

{

    mTuneReason = reason;

    // Find the previous and next favorite from current frequency

    uint previous = 0;

    uint next = 0;

    for( int i = 0; i < KScanFrequencyCount; ++i ) {

        const uint testFreq = KScanFrequencies[i];

        if ( KScanFrequencies[i] > mFrequency ) {

            next = testFreq;

            break;

        }

        previous = testFreq;

    }

    if ( direction == Seeking::Up ) {

        if ( next == 0 ) {

            next = KScanFrequencies[0];

        }

        mNextFrequency = next;

    } else {

        if ( previous == 0 ) {

            previous = KScanFrequencies[KScanFrequencyCount - 1];

        }

        mNextFrequency = previous;

    }

    mTuneTimer->start( 1000 );

}

/*!

 *

 */

void RadioEngineWrapperPrivate::cancelSeeking()

{

    mTuneTimer->stop();

    mNextFrequency = 0;

}

/*!

 *

 */

void RadioEngineWrapperPrivate::toggleAudioRoute()

{

    mUseLoudspeaker = !mUseLoudspeaker;

    RUN_NOTIFY_LOOP( mObservers, audioRouteChanged( mUseLoudspeaker ) );

}

/*!

 *

 */

QString RadioEngineWrapperPrivate::dataParsingError() const

{

    return mParsingError;

}

/*!

 *

 */

void RadioEngineWrapperPrivate::setHeadsetStatus( bool connected )

{

    mAntennaAttached = connected;

    RUN_NOTIFY_LOOP( mObservers, antennaStatusChanged( mAntennaAttached ) );

}

/*!

 *

 */

void RadioEngineWrapperPrivate::setVolume( int volume )

{

    mVolume = volume;

    RUN_NOTIFY_LOOP( mObservers, volumeChanged( mVolume ) );

}

/*!

 *

 */

void RadioEngineWrapperPrivate::addSong( const QString& artist, const QString& title )

{

    QString radioText = QString( "Now Playing: %1 - %2" ).arg( artist ).arg( title );

    mArtist = artist;

    mTitle = title;

    const uint frequency = mStationHandler.currentFrequency();

    mStationHandler.setCurrentRadioText( frequency, radioText );

    QTimer::singleShot( 500, this, SLOT(addSongTags()) );

}

/*!

 *

 */

void RadioEngineWrapperPrivate::clearSong()

{

    mStationHandler.setCurrentRadioText( mStationHandler.currentFrequency(), "" );

}

/*!

 *

 */

bool RadioEngineWrapperPrivate::isOffline() const

{

    return mEngineSettings->value( KKeyOffline, false ).toBool();

}

/*!

 *

 */

void RadioEngineWrapperPrivate::setOffline( bool offline )

{

    mEngineSettings->setValue( KKeyOffline, offline );

}

/*!

 * Private slot

 */

void RadioEngineWrapperPrivate::frequencyEvent()

{

    mFrequency = mNextFrequency;

    mEngineSettings->setValue( KKeyFrequency, mFrequency );

    RUN_NOTIFY_LOOP( mObservers, tunedToFrequency( mFrequency, mTuneReason ) );

}

/*!

 * Private slot

 */

void RadioEngineWrapperPrivate::addSongTags()

{

    const uint frequency = mStationHandler.currentFrequency();

    mStationHandler.setCurrentRadioTextPlus( frequency, RtPlus::Artist, mArtist );

    mStationHandler.setCurrentRadioTextPlus( frequency, RtPlus::Title, mTitle );

    mArtist = "";

    mTitle = "";

}

/*!

 *

 */

void RadioEngineWrapperPrivate::parseData()

{

    /*

    mDataParser.reset( new T_RadioDataParser() );

    bool ok = mDataParser->parse();

    if ( !ok ) {

        mParsingError = mDataParser->errorString();

    } else {

        if ( mDataParser->mEngineSettings.mMaxVolume > 0 ) {

            mMaxVolume = mDataParser->mEngineSettings.mMaxVolume;

        }

        if ( mDataParser->mEngineSettings.mFrequencyStepSize > 0 ) {

            mFrequencyStepSize = mDataParser->mEngineSettings.mFrequencyStepSize;

        }

        if ( mDataParser->mEngineSettings.mRegionId >= 0 ) {

            mRegionId = static_cast<RadioRegion::Region>( mDataParser->mEngineSettings.mRegionId );

        }

        if ( mDataParser->mEngineSettings.mMinFrequency > 0 ) {

            mMinFrequency = mDataParser->mEngineSettings.mMinFrequency;

        }

        if ( mDataParser->mEngineSettings.mMaxFrequency > 0 ) {

            mMaxFrequency = mDataParser->mEngineSettings.mMaxFrequency;

        }

    }

*/

}