/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
 *
 *   Copyright 2010-2011, Christian Muehlhaeuser <muesli@tomahawk-player.org>
 *
 *   Tomahawk 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.
 *
 *   Tomahawk 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 Tomahawk. If not, see <http://www.gnu.org/licenses/>.
 */

#include "topbar.h"
#include "ui_topbar.h"

#include "searchbutton.h"

#include <QPropertyAnimation>
#include <QRadioButton>
#include <QFile>

#include "utils/tomahawkutils.h"
#include "utils/logger.h"

#define MAXDUDES 3
#define DUDEWIDTH 10
#define DUDEX( i ) ( DUDEWIDTH * i )

using namespace Tomahawk;


TopBar::TopBar( QWidget* parent )
    : QWidget( parent )
    , ui( new Ui::TopBar )
    , m_sources( 0 )
    , m_tracks( 0 )
    , m_artists( 0 )
    , m_shown( 0 )
{
    ui->setupUi( this );

    ui->statsLabelNumTracks->setFormat( "%L1 " + tr( "Tracks" ) );
    ui->statsLabelNumArtists->setFormat( "%L1 " + tr( "Artists" ) );
    connect( ui->filterEdit, SIGNAL( textChanged( QString ) ), SIGNAL( filterTextChanged( QString ) ) );

    ui->filterEdit->setStyleSheet( "QLineEdit { border: 1px solid gray; border-radius: 6px; margin-right: 2px; }" );
    ui->filterEdit->setInactiveText( tr( "Filter" ) );
#ifdef Q_WS_MAC
    ui->filterEdit->setAttribute( Qt::WA_MacShowFocusRect, 0 );
#endif

    ui->filterEdit->searchButton()->setImage( QImage( RESPATH "images/filter.png" ) );

    // initialise dudes
    for( int i = 0; i < MAXDUDES; ++i )
    {
        QLabel* manlbl = new QLabel( ui->widgetMen );
        manlbl->setPixmap( QPixmap( RESPATH "images/avatar-dude.png" ) );
        manlbl->move( QPoint( -10,0 ) );
        manlbl->show();
        m_dudes.append( manlbl );
    }

    QFile f( RESPATH "stylesheets/topbar-radiobuttons.css" );
    f.open( QFile::ReadOnly );
    QString css = QString::fromAscii( f.readAll() );
    f.close();

    ui->widgetRadio->setStyleSheet( css );

    ui->radioNormal->setFocusPolicy( Qt::NoFocus );
    ui->radioDetailed->setFocusPolicy( Qt::NoFocus );
    ui->radioCloud->setFocusPolicy( Qt::NoFocus );

    ui->radioCloud->hide();

    ui->radioNormal->setToolTip( tr( "Artist View" ) );
    ui->radioDetailed->setToolTip( tr("Flat View" ) );

    connect( ui->radioNormal, SIGNAL( clicked() ), SIGNAL( artistMode() ) );
    connect( ui->radioDetailed, SIGNAL( clicked() ), SIGNAL( flatMode() ) );
    connect( ui->radioCloud, SIGNAL( clicked() ), SIGNAL( albumMode() ) );

    setNumSources( 0 );
    setNumTracks( 0 );
    setNumArtists( 0 );
    setNumShown( 0 );

    onArtistMode();

    connect( ViewManager::instance(), SIGNAL( numSourcesChanged( unsigned int ) ),
                                        SLOT( setNumSources( unsigned int ) ) );

    connect( ViewManager::instance(), SIGNAL( numTracksChanged( unsigned int ) ),
                                        SLOT( setNumTracks( unsigned int ) ) );

    connect( ViewManager::instance(), SIGNAL( numArtistsChanged( unsigned int ) ),
                                        SLOT( setNumArtists( unsigned int ) ) );

    connect( ViewManager::instance(), SIGNAL( numShownChanged( unsigned int ) ),
                                        SLOT( setNumShown( unsigned int ) ) );

    connect( ViewManager::instance(), SIGNAL( statsAvailable( bool ) ),
                                        SLOT( setStatsVisible( bool ) ) );

    connect( ViewManager::instance(), SIGNAL( modesAvailable( bool ) ),
                                        SLOT( setModesVisible( bool ) ) );

    connect( ViewManager::instance(), SIGNAL( filterAvailable( bool ) ),
                                        SLOT( setFilterVisible( bool ) ) );

    connect( ViewManager::instance(), SIGNAL( modeChanged( Tomahawk::PlaylistInterface::ViewMode ) ),
                                        SLOT( onModeChanged( Tomahawk::PlaylistInterface::ViewMode ) ) );
}


TopBar::~TopBar()
{
    delete ui;
}


void
TopBar::changeEvent( QEvent* e )
{
    QWidget::changeEvent( e );
    switch ( e->type() )
    {
        case QEvent::LanguageChange:
            ui->retranslateUi( this );
            break;

        default:
            break;
    }
}


void
TopBar::resizeEvent( QResizeEvent* e )
{
    QWidget::resizeEvent( e );
}


void
TopBar::fadeInDude( unsigned int i )
{
//    qDebug() << Q_FUNC_INFO << i;

    QLabel* dude = m_dudes.at( i );
    QPropertyAnimation* ani = new QPropertyAnimation( dude, "pos" );
    ani->setDuration( 1000 );
    ani->setEasingCurve( QEasingCurve::InQuad );
    ani->setStartValue( QPoint( -10,0 ) );
    ani->setEndValue( QPoint( DUDEX( i+1 ), 0 ) );

    qDebug() << "Animating from" << ani->startValue() << "to" << ani->endValue();
    connect( ani, SIGNAL( finished() ), ani, SLOT( deleteLater() ) );
    ani->start();
}


void
TopBar::fadeOutDude( unsigned int i )
{
//    qDebug() << Q_FUNC_INFO << i;

    QLabel* dude = m_dudes.at( i );
    QPropertyAnimation* ani = new QPropertyAnimation( dude, "pos" );
    ani->setDuration( 1000 );
    ani->setEasingCurve( QEasingCurve::OutQuad );
    ani->setStartValue( dude->pos() );
    ani->setEndValue( QPoint( -10, 0 ) );

    qDebug() << "Animating from" << ani->startValue() << "to" << ani->endValue();
    connect( ani, SIGNAL( finished() ), ani, SLOT( deleteLater() ) );
    ani->start();
}


void
TopBar::setNumSources( unsigned int i )
{
//    qDebug() << Q_FUNC_INFO << i;

    // Dude0 Dude1 Dude2
    ui->statsLabelNumSources->setText( QString( "%L1 %2" ).arg( i ).arg( tr( "Sources" ) ) );

    if( ( m_sources >= MAXDUDES && i >= MAXDUDES ) || m_sources == i )
    {
        m_sources = i;
        return;
    }

    if( i > m_sources )
    {
        for( unsigned int k = m_sources; k < MAXDUDES && k < i; ++k )
        {
            fadeInDude( k );
        }
        m_sources = i;
    }
    else
    {
        int k = qMin( (unsigned int)MAXDUDES - 1, m_sources - 1 );
        do
        {
            fadeOutDude( k );
            m_sources--;
        } while( (unsigned int)k-- > i );

        m_sources = i;
    }
}


void
TopBar::setNumTracks( unsigned int i )
{
    m_tracks = i;
    ui->statsLabelNumTracks->setVal( i );
}


void
TopBar::setNumArtists( unsigned int i )
{
    m_artists = i;
    ui->statsLabelNumArtists->setVisible( m_artists > 0 );
    ui->statsLabelNumArtists->setVal( i );
}


void
TopBar::setNumShown( unsigned int i )
{
    m_shown = i;
    ui->statsLabelNumShown->setVisible( m_shown != m_tracks && ui->statsLabelNumTracks->isVisible() );
    ui->statsLabelNumShown->setText( QString( "%L1 %2" ).arg( i ).arg( tr( "Shown" ) ) );
}


void
TopBar::addSource()
{
//    qDebug() << Q_FUNC_INFO;
    setNumSources( m_sources + 1 );
}


void
TopBar::removeSource()
{
//    qDebug() << Q_FUNC_INFO;
    Q_ASSERT( m_sources > 0 );
    setNumSources( m_sources - 1 );
}


void
TopBar::setStatsVisible( bool b )
{
    foreach( QLabel* dude, m_dudes )
        dude->setVisible( b );

//    ui->statsLabelNumArtists->setVisible( b );
//    ui->statsLabelNumShown->setVisible( b );
    ui->statsLabelNumSources->setVisible( b );
    ui->statsLabelNumTracks->setVisible( b );
}


void
TopBar::setModesVisible( bool b )
{
    ui->widgetRadio->setVisible( b );
}


void
TopBar::setFilterVisible( bool b )
{
    ui->filterEdit->setVisible( b );
}


void
TopBar::setFilter( const QString& filter )
{
    ui->filterEdit->setText( filter );
}


void
TopBar::onModeChanged( Tomahawk::PlaylistInterface::ViewMode mode )
{
    qDebug() << Q_FUNC_INFO << mode;
    switch ( mode )
    {
        case Tomahawk::PlaylistInterface::Flat:
            onFlatMode();
            break;

        case Tomahawk::PlaylistInterface::Tree:
            onArtistMode();
            break;

        case Tomahawk::PlaylistInterface::Album:
            onAlbumMode();
            break;

        default:
            break;
    }
}


void
TopBar::onFlatMode()
{
    ui->radioDetailed->setChecked( true );
}


void
TopBar::onArtistMode()
{
    ui->radioNormal->setChecked( true );
}


void
TopBar::onAlbumMode()
{
    ui->radioCloud->setChecked( true );
}