/*  umplayer, GUI front-end for mplayer.
    Copyright (C) 2006-2009 Ricardo Villalba <rvm@escomposlinux.org>
    Copyright (C) 2010 Ori Rejwan

    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, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "playlist.h"

#include <QToolBar>
#include <QFile>
#include <QTextStream>
#include <QDir>
#include <QFileInfo>
#include <QMessageBox>
#include <QPushButton>
#include <QRegExp>
#include <QMenu>
#include <QDateTime>
#include <QSettings>
#include <QInputDialog>
#include <QToolButton>
#include <QTimer>
#include <QVBoxLayout>
#include <QUrl>
#include <QDragEnterEvent>
#include <QDropEvent>
#include <QHeaderView>
#include <QTextCodec>
#include <QApplication>
#include <QLabel>

#include "mytablewidget.h"
#include "myaction.h"
#include "filedialog.h"
#include "helper.h"
#include "images.h"
#include "preferences.h"
#include "version.h"
#include "global.h"
#include "core.h"
#include "extensions.h"
#include "guiconfig.h"
#include "playlistpreferences.h"
#include "myborder.h"

#include <stdlib.h>

#if USE_INFOPROVIDER
#include "infoprovider.h"
#endif

#define DRAG_ITEMS 0

#define COL_PLAY 0
#define COL_NAME 1
#define COL_TIME 2

using namespace Global;


Playlist::Playlist( Core *c, QWidget * parent, Qt::WindowFlags f)
	: QWidget(parent,f) 
{

	automatically_play_next = true;

        row_spacing = -1; // Default height

	modified = false;

	core = c;
    playlist_path = "";
    latest_dir = "";

	createTable();
	createActions();
	createToolbar();

	connect( core, SIGNAL(mediaFinished()), this, SLOT(playNext()), Qt::QueuedConnection );
	connect( core, SIGNAL(mediaLoaded()), this, SLOT(getMediaInfo()) );

        MyBorder* border = new MyBorder(this);
        border->setFixedHeight(1);
        border->setBGColor(toolbar->palette().color(toolbar->backgroundRole()));
        QVBoxLayout *layout = new QVBoxLayout;
	layout->addWidget( listView );
        layout->addWidget(border);
	layout->addWidget( toolbar );
        layout->setContentsMargins(0,0,0,0);
        layout->setSpacing(0);
	setLayout(layout);

    clear();

	retranslateStrings();

#if !DOCK_PLAYLIST
	setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Expanding );
	adjustSize();
#else
	//setSizePolicy( QSizePolicy::Maximum, QSizePolicy::Expanding );
	//setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Preferred );
	setSizePolicy( QSizePolicy::Preferred, QSizePolicy::Preferred );
#endif

	setAcceptDrops(true);
	setAttribute(Qt::WA_NoMousePropagation);

	// Random seed
	QTime t;
	t.start();
	srand( t.hour() * 3600 + t.minute() * 60 + t.second() );

	loadSettings();

	// Ugly hack to avoid to play next item automatically
	if (!automatically_play_next) {
		disconnect( core, SIGNAL(mediaFinished()), this, SLOT(playNext()) );
	}

	// Save config every 5 minutes.
	save_timer = new QTimer(this);
	connect( save_timer, SIGNAL(timeout()), this, SLOT(maybeSaveSettings()) );
	save_timer->start( 5 * 60000 ); 
}

Playlist::~Playlist() {
	saveSettings();
}

void Playlist::setModified(bool mod) {
	qDebug("Playlist::setModified: %d", mod);

	modified = mod;
	emit modifiedChanged(modified);
}

void Playlist::createTable() {
	listView = new MyTableWidget( 0, COL_TIME + 1, this);
	listView->setObjectName("playlist_table");
        listView->setFrameStyle(QFrame::NoFrame);
	listView->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
	listView->setSelectionBehavior(QAbstractItemView::SelectRows);
	listView->setSelectionMode(QAbstractItemView::ExtendedSelection);
        listView->setContextMenuPolicy( Qt::CustomContextMenu );
        listView->setShowGrid(false);
        listView->setSortingEnabled(false);
        listView->setAlternatingRowColors(true);
        QPalette pal = listView->palette();
        pal.setColor(QPalette::AlternateBase, QColor("#f0f6ff"));
        pal.setColor(QPalette::Base, Qt::white);
        listView->setPalette(pal);
        listView->horizontalHeader()->setResizeMode(QHeaderView::Interactive);
        listView->horizontalHeader()->setResizeMode(COL_NAME, QHeaderView::Stretch);
        /*
	listView->horizontalHeader()->setResizeMode(COL_TIME, QHeaderView::ResizeToContents);
	listView->horizontalHeader()->setResizeMode(COL_PLAY, QHeaderView::ResizeToContents);
	*/
        listView->setIconSize( QPixmap(":/Playlist/ok.png").size() );

#if DRAG_ITEMS
        listView->setSelectionMode(QAbstractItemView::SingleSelection);
	listView->setDragEnabled(true);
	listView->setAcceptDrops(true);
	listView->setDropIndicatorShown(true);
	listView->setDragDropMode(QAbstractItemView::InternalMove);
#endif

	connect( listView, SIGNAL(cellActivated(int,int)),
             this, SLOT(itemDoubleClicked(int)) );
        connect(listView, SIGNAL(removeSelected()), this, SLOT(removeSelected()));
}

void Playlist::createActions() {
	openAct = new MyAction(this, "pl_open", false);
	connect( openAct, SIGNAL(triggered()), this, SLOT(load()) );

	saveAct = new MyAction(this, "pl_save", false);
	connect( saveAct, SIGNAL(triggered()), this, SLOT(save()) );

	playAct = new MyAction(this, "pl_play", false);
	connect( playAct, SIGNAL(triggered()), this, SLOT(playCurrent()) );

	nextAct = new MyAction(Qt::Key_N /*Qt::Key_Greater*/, this, "pl_next", false);
	connect( nextAct, SIGNAL(triggered()), this, SLOT(playNext()) );

	prevAct = new MyAction(Qt::Key_P /*Qt::Key_Less*/, this, "pl_prev", false);
	connect( prevAct, SIGNAL(triggered()), this, SLOT(playPrev()) );

	moveUpAct = new MyAction(this, "pl_move_up", false);
	connect( moveUpAct, SIGNAL(triggered()), this, SLOT(upItem()) );

	moveDownAct = new MyAction(this, "pl_move_down", false);
	connect( moveDownAct, SIGNAL(triggered()), this, SLOT(downItem()) );

	repeatAct = new MyAction(this, "pl_repeat", false);
	repeatAct->setCheckable(true);

	shuffleAct = new MyAction(this, "pl_shuffle", false);
	shuffleAct->setCheckable(true);

	preferencesAct = new MyAction(this, "pl_preferences", false);
	connect( preferencesAct, SIGNAL(triggered()), this, SLOT(editPreferences()) );

	// Add actions
	addCurrentAct = new MyAction(this, "pl_add_current", false);
	connect( addCurrentAct, SIGNAL(triggered()), this, SLOT(addCurrentFile()) );

	addFilesAct = new MyAction(this, "pl_add_files", false);
	connect( addFilesAct, SIGNAL(triggered()), this, SLOT(addFiles()) );

	addDirectoryAct = new MyAction(this, "pl_add_directory", false);
	connect( addDirectoryAct, SIGNAL(triggered()), this, SLOT(addDirectory()) );

	// Remove actions
	removeSelectedAct = new MyAction(this, "pl_remove_selected", false);
	connect( removeSelectedAct, SIGNAL(triggered()), this, SLOT(removeSelected()) );

	removeAllAct = new MyAction(this, "pl_remove_all", false);
	connect( removeAllAct, SIGNAL(triggered()), this, SLOT(removeAll()) );

	// Edit
	editAct = new MyAction(this, "pl_edit", false);
	connect( editAct, SIGNAL(triggered()), this, SLOT(editCurrentItem()) );
}

void Playlist::createToolbar() {
	toolbar = new QToolBar(this);
	toolbar->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum );

	toolbar->addAction(openAct);
	toolbar->addAction(saveAct);;
	toolbar->addSeparator();

	add_menu = new QMenu( this );
	add_menu->addAction(addCurrentAct);
	add_menu->addAction(addFilesAct );
	add_menu->addAction(addDirectoryAct);

	add_button = new QToolButton( this );
	add_button->setMenu( add_menu );
	add_button->setPopupMode(QToolButton::InstantPopup);

	remove_menu = new QMenu( this );
	remove_menu->addAction(removeSelectedAct);
	remove_menu->addAction(removeAllAct);

	remove_button = new QToolButton( this );
	remove_button->setMenu( remove_menu );
	remove_button->setPopupMode(QToolButton::InstantPopup);

	toolbar->addWidget(add_button);
	toolbar->addWidget(remove_button);

	toolbar->addSeparator();
        /*toolbar->addAction(playAct);
	toolbar->addSeparator();
	toolbar->addAction(prevAct);
	toolbar->addAction(nextAct);
	toolbar->addSeparator();
	toolbar->addAction(repeatAct);
	toolbar->addAction(shuffleAct);
        toolbar->addSeparator();*/
        toolbar->addAction(moveUpAct);
	toolbar->addAction(moveDownAct);
        /*toolbar->addSeparator();
        toolbar->addAction(preferencesAct);*/

	// Popup menu
	popup = new QMenu(this);
	popup->addAction(playAct);
	popup->addAction(removeSelectedAct);
	popup->addAction(editAct);

	connect( listView, SIGNAL(customContextMenuRequested(const QPoint &)),
             this, SLOT(showPopup(const QPoint &)) );
}

void Playlist::retranslateStrings() {
	listView->setHorizontalHeaderLabels( QStringList() << "   " <<
        tr("Name") << tr("Length") );

        openAct->change( Images::icon("playlist_open"), tr("&Load") );
        saveAct->change( Images::icon("playlist_save"), tr("&Save") );

	playAct->change( tr("&Play") );

	nextAct->change( tr("&Next") );
	prevAct->change( tr("Pre&vious") );

	if (qApp->isLeftToRight()) {
		playAct->setIcon( Images::icon("play") );
		nextAct->setIcon( Images::icon("next") );
		prevAct->setIcon( Images::icon("previous") );
	} else {
		playAct->setIcon( Images::flippedIcon("play") );
		nextAct->setIcon( Images::flippedIcon("next") );
		prevAct->setIcon( Images::flippedIcon("previous") );
	}

        moveUpAct->change( Images::icon("playlist_up"), tr("Move &up") );
        moveDownAct->change( Images::icon("playlist_down"), tr("Move &down") );

	repeatAct->change( Images::icon("repeat"), tr("&Repeat") );
	shuffleAct->change( Images::icon("shuffle"), tr("S&huffle") );

	preferencesAct->change( Images::icon("prefs"), tr("Preferences") );

	// Add actions
	addCurrentAct->change( tr("Add &current file") );
	addFilesAct->change( tr("Add &file(s)") );
	addDirectoryAct->change( tr("Add &directory") );

	// Remove actions
	removeSelectedAct->change( tr("Remove &selected") );
	removeAllAct->change( tr("Remove &all") );

	// Edit
	editAct->change( tr("&Edit") );

	// Tool buttons
	add_button->setIcon( Images::icon("plus") );
	add_button->setToolTip( tr("Add...") );
	remove_button->setIcon( Images::icon("minus") );
	remove_button->setToolTip( tr("Remove...") );

	// Icon
        QStringList logos;
        logos << "Umplayer-16" << "Umplayer-24" <<"Umplayer-32" << "Umplayer-48" << "Umplayer-256" << "Umplayer-512" ;
        setWindowIcon( Images::icon(logos));
        setWindowTitle( tr( "UMPlayer - Playlist" ) );
}

void Playlist::list() {
	qDebug("Playlist::list");

	PlaylistItemList::iterator it;
	for ( it = pl.begin(); it != pl.end(); ++it ) {
		qDebug( "filename: '%s', name: '%s' duration: %f",
               (*it).filename().toUtf8().data(), (*it).name().toUtf8().data(),
               (*it).duration() );
	}
}

void Playlist::updateView() {
	qDebug("Playlist::updateView");

	listView->setRowCount( pl.count() );

	//QString number;
	QString name;
	QString time;

	for (int n=0; n < pl.count(); n++) {
		name = pl[n].name();
		if (name.isEmpty()) name = pl[n].filename();
		time = Helper::formatTime( (int) pl[n].duration() );
		
		//listView->setText(n, COL_POS, number);
		qDebug("Playlist::updateView: name: '%s'", name.toUtf8().data());
		listView->setText(n, COL_NAME, name);
		listView->setText(n, COL_TIME, time);

		if (pl[n].played()) {
                    listView->setIcon(n, COL_PLAY, QPixmap(":/Playlist/ok.png") );
		} else {
			listView->setIcon(n, COL_PLAY, QPixmap() );
                }
                listView->setRowHeight(n, 17);

                //if (row_spacing > -1) listView->setRowHeight(n, listView->font().pointSize() + row_spacing);
	}
	//listView->resizeColumnsToContents();
	listView->resizeColumnToContents(COL_PLAY);
	listView->resizeColumnToContents(COL_TIME);

	setCurrentItem(current_item);

	//adjustSize();
}

void Playlist::setCurrentItem(int current) {
	QIcon play_icon;
	if (qApp->isLeftToRight()) {
                play_icon = QPixmap(":/Playlist/playing.png");
	} else {
            QPixmap icon = QPixmap(":/Playlist/playing.png");
            play_icon = Images::flip(&icon);
	}

	int old_current = current_item;
	current_item = current;

	if ((current_item > -1) && (current_item < pl.count())) {
		pl[current_item].setPlayed(TRUE);
	}

	if ( (old_current >= 0) && (old_current < listView->rowCount()) ) {
		listView->setIcon(old_current, COL_PLAY, QPixmap() );
	}

	if ( (current_item >= 0) && (current_item < listView->rowCount()) ) {
		listView->setIcon(current_item, COL_PLAY, play_icon );
	}
	//if (current_item >= 0) listView->selectRow(current_item);
	if (current_item >= 0) {
		listView->clearSelection();
		listView->setCurrentCell( current_item, 0);
	}
        checkNextPrevAvailability();
}

void Playlist::clear() {
	pl.clear();

	listView->clearContents();
	listView->setRowCount(0);

	setCurrentItem(0);

	setModified( false );
}

int Playlist::count() {
	return pl.count();
}

bool Playlist::isEmpty() {
	return pl.isEmpty();
}

void Playlist::addItem(QString filename, QString name, double duration) {
	qDebug("Playlist::addItem: '%s'", filename.toUtf8().data());

	#ifdef Q_OS_WIN
	filename = Helper::changeSlashes(filename);
	#endif

	// Test if already is in the list
	bool exists = false;
	for ( int n = 0; n < pl.count(); n++) {
		if ( pl[n].filename() == filename ) {
			exists = true;
			int last_item =  pl.count()-1;
			pl.move(n, last_item);
			qDebug("Playlist::addItem: item already in list (%d), moved to %d", n, last_item);
			if (current_item > -1) {
				if (current_item > n) current_item--;
				else
				if (current_item == n) current_item = last_item;
			}
			break;
		}
	}

	if (!exists) {
		if (name.isEmpty()) {
			QFileInfo fi(filename);
			// Let's see if it looks like a file (no dvd://1 or something)
			if (filename.indexOf(QRegExp("^.*://.*")) == -1) {
				// Local file
				name = fi.fileName(); //fi.baseName(TRUE);
			} else {
				// Stream
				name = filename;
			}
		}
		pl.append( PlaylistItem(filename, name, duration) );
		//setModified( true ); // Better set the modified on a higher level
	} else {
		qDebug("Playlist::addItem: item not added, already in the list");
	}
}

void Playlist::load_m3u(QString file) {
	qDebug("Playlist::load_m3u");

	bool utf8 = (QFileInfo(file).suffix().toLower() == "m3u8");

	QRegExp m3u_id("^#EXTM3U|^#M3U");
	QRegExp info("^#EXTINF:(.*),(.*)");

    QFile f( file );
    if ( f.open( QIODevice::ReadOnly ) ) {
		playlist_path = QFileInfo(file).path();

		clear();
		QString filename="";
		QString name="";
		double duration=0;

        QTextStream stream( &f );

		if (utf8)
			stream.setCodec("UTF-8");
		else
			stream.setCodec(QTextCodec::codecForLocale());

        QString line;
        while ( !stream.atEnd() ) {
            line = stream.readLine(); // line of text excluding '\n'
            qDebug( " * line: '%s'", line.toUtf8().data() );
			if (m3u_id.indexIn(line)!=-1) {
				//#EXTM3U
				// Ignore line
			}
			else
			if (info.indexIn(line)!=-1) {
				duration = info.cap(1).toDouble();
				name = info.cap(2);
				qDebug(" * name: '%s', duration: %f", name.toUtf8().data(), duration );
			} 
			else
			if (line.startsWith("#")) {
				// Comment
				// Ignore
			} else {
				filename = line;
				QFileInfo fi(filename);
				if (fi.exists()) {
					filename = fi.absoluteFilePath();
				}
				if (!fi.exists()) {
					if (QFileInfo( playlist_path + "/" + filename).exists() ) {
						filename = playlist_path + "/" + filename;
					}
				}
				addItem( filename, name, duration );
				name=""; 
				duration = 0;
			}
        }
        f.close();
		list();
		updateView();

		setModified( false );

		startPlay();
	}
}

void Playlist::load_pls(QString file) {
	qDebug("Playlist::load_pls");

	if (!QFile::exists(file)) {
		qDebug("Playlist::load_pls: '%s' doesn't exist, doing nothing", file.toUtf8().constData());
		return;
	}

	playlist_path = QFileInfo(file).path();

	QSettings set(file, QSettings::IniFormat);
	set.beginGroup("playlist");

	if (set.status() == QSettings::NoError) {
		clear();
		QString filename;
		QString name;
		double duration;

		int num_items = set.value("NumberOfEntries", 0).toInt();

		for (int n=0; n < num_items; n++) {
			filename = set.value("File"+QString::number(n+1), "").toString();
			name = set.value("Title"+QString::number(n+1), "").toString();
			duration = (double) set.value("Length"+QString::number(n+1), 0).toInt();

			QFileInfo fi(filename);
			if (fi.exists()) {
				filename = fi.absoluteFilePath();
			}
			if (!fi.exists()) {
				if (QFileInfo( playlist_path + "/" + filename).exists() ) {
					filename = playlist_path + "/" + filename;
				}
			}
			addItem( filename, name, duration );
		}
	}

	set.endGroup();

	list();
	updateView();

	setModified( false );

	if (set.status() == QSettings::NoError) startPlay();
}

bool Playlist::save_m3u(QString file) {
	qDebug("Playlist::save_m3u: '%s'", file.toUtf8().data());

	QString dir_path = QFileInfo(file).path();
	if (!dir_path.endsWith("/")) dir_path += "/";

	#ifdef Q_OS_WIN
	dir_path = Helper::changeSlashes(dir_path);
	#endif

	qDebug(" * dirPath: '%s'", dir_path.toUtf8().data());

	bool utf8 = (QFileInfo(file).suffix().toLower() == "m3u8");

	QFile f( file );
    if ( f.open( QIODevice::WriteOnly ) ) {
        QTextStream stream( &f );

		if (utf8) 
			stream.setCodec("UTF-8");
		else
			stream.setCodec(QTextCodec::codecForLocale());

		QString filename;

		stream << "#EXTM3U" << "\n";
                stream << "# Playlist created by UMPlayer " << umplayerVersion() << " \n";

		PlaylistItemList::iterator it;
		for ( it = pl.begin(); it != pl.end(); ++it ) {
			filename = (*it).filename();
			#ifdef Q_OS_WIN
			filename = Helper::changeSlashes(filename);
			#endif
			stream << "#EXTINF:";
			stream << (*it).duration() << ",";
			stream << (*it).name() << "\n";
			// Try to save the filename as relative instead of absolute
			if (filename.startsWith( dir_path )) {
				filename = filename.mid( dir_path.length() );
			}
			stream << filename << "\n";
		}
        f.close();

		setModified( false );
		return true;
    } else {
		return false;
	}
}


bool Playlist::save_pls(QString file) {
	qDebug("Playlist::save_pls: '%s'", file.toUtf8().data());

	QString dir_path = QFileInfo(file).path();
	if (!dir_path.endsWith("/")) dir_path += "/";

	#ifdef Q_OS_WIN
	dir_path = Helper::changeSlashes(dir_path);
	#endif

	qDebug(" * dirPath: '%s'", dir_path.toUtf8().data());

	QSettings set(file, QSettings::IniFormat);
	set.beginGroup( "playlist");
	
	QString filename;

	PlaylistItemList::iterator it;
	for ( int n=0; n < pl.count(); n++ ) {
		filename = pl[n].filename();
		#ifdef Q_OS_WIN
		filename = Helper::changeSlashes(filename);
		#endif

		// Try to save the filename as relative instead of absolute
		if (filename.startsWith( dir_path )) {
			filename = filename.mid( dir_path.length() );
		}

		set.setValue("File"+QString::number(n+1), filename);
		set.setValue("Title"+QString::number(n+1), pl[n].name());
		set.setValue("Length"+QString::number(n+1), (int) pl[n].duration());
	}

	set.setValue("NumberOfEntries", pl.count());
	set.setValue("Version", 2);

	set.endGroup();

	set.sync();

	bool ok = (set.status() == QSettings::NoError);
	if (ok) setModified( false );

	return ok;
}


void Playlist::load() {
	if (maybeSave()) {
		Extensions e;
		QString s = MyFileDialog::getOpenFileName(
                    this, tr("Choose a file"), 
                    lastDir(),
                    tr("Playlists") + e.playlist().forFilter());

		if (!s.isEmpty()) {
			latest_dir = QFileInfo(s).absolutePath();

			if (QFileInfo(s).suffix().toLower() == "pls")
				load_pls(s);
			else
				load_m3u(s);
		}
	}
}

bool Playlist::save() {
	Extensions e;
	QString s = MyFileDialog::getSaveFileName(
                    this, tr("Choose a filename"), 
                    lastDir(),
                    tr("Playlists") + e.playlist().forFilter());

	if (!s.isEmpty()) {
		// If filename has no extension, add it
		if (QFileInfo(s).suffix().isEmpty()) {
			s = s + ".m3u";
		}
		if (QFileInfo(s).exists()) {
			int res = QMessageBox::question( this,
					tr("Confirm overwrite?"),
                    tr("The file %1 already exists.\n"
                       "Do you want to overwrite?").arg(s),
                    QMessageBox::Yes,
                    QMessageBox::No,
                    QMessageBox::NoButton);
			if (res == QMessageBox::No ) {
            	return false;
			}
		}
		latest_dir = QFileInfo(s).absolutePath();

		if (QFileInfo(s).suffix().toLower() == "pls")
			return save_pls(s);
		else
			return save_m3u(s);

	} else {
		return false;
	}
}

bool Playlist::maybeSave() {
	if (!isModified()) return true;

	int res = QMessageBox::question( this,
				tr("Playlist modified"),
                tr("There are unsaved changes, do you want to save the playlist?"),
                QMessageBox::Yes,
                QMessageBox::No,
                QMessageBox::Cancel);

	switch (res) {
		case QMessageBox::No : return true; // Discard changes
		case QMessageBox::Cancel : return false; // Cancel operation
		default : return save();
	}
}

void Playlist::playCurrent() {
	int current = listView->currentRow();
	if (current > -1) {
		playItem(current);
	}
}

void Playlist::itemDoubleClicked(int row) {
	qDebug("Playlist::itemDoubleClicked: row: %d", row );
	playItem(row);
}

void Playlist::showPopup(const QPoint & pos) {
	qDebug("Playlist::showPopup: x: %d y: %d", pos.x(), pos.y() );

	if (!popup->isVisible()) {
		popup->move( listView->viewport()->mapToGlobal(pos) );
		popup->show();
	}
}

void Playlist::startPlay() {
	// Start to play
	if ( shuffleAct->isChecked() ) 
		playItem( chooseRandomItem() );
	else
		playItem(0);
}

void Playlist::playItem( int n ) {
	qDebug("Playlist::playItem: %d (count:%d)", n, pl.count());

	if ( (n >= pl.count()) || (n < 0) ) {
		qDebug("Playlist::playItem: out of range");
		emit playlistEnded();
		return;
	}

	qDebug(" playlist_path: '%s'", playlist_path.toUtf8().data() );

	QString filename = pl[n].filename();
	QString filename_with_path = playlist_path + "/" + filename;

	if (!filename.isEmpty()) {
		//pl[n].setPlayed(TRUE);
                setCurrentItem(n);
                if (pref->play_files_from_start)
			core->open(filename, 0);
		else
			core->open(filename);                
	}

}

void Playlist::playNext() {
	qDebug("Playlist::playNext");

	if (shuffleAct->isChecked()) {
		// Shuffle
		int chosen_item = chooseRandomItem();
		if (chosen_item == -1) {
			clearPlayedTag();
			if (repeatAct->isChecked()) chosen_item = chooseRandomItem();
		}
		playItem( chosen_item );
	} else {
		bool finished_list = (current_item+1 >= pl.count());
		if (finished_list) clearPlayedTag();

		if ( (repeatAct->isChecked()) && (finished_list) ) {
			playItem(0);
		} else {
			playItem( current_item+1 );
		}
	}
}

void Playlist::playPrev() {
	qDebug("Playlist::playPrev");
	if (current_item > 0) {
		playItem( current_item-1 );
	} else {
		if (pl.count() > 1) playItem( pl.count() -1 );
	}
}

void Playlist::getMediaInfo() {
	qDebug("Playlist:: getMediaInfo");

	QString filename = core->mdat.filename;
	double duration = core->mdat.duration;
	QString name = core->mdat.clip_name;
	QString artist = core->mdat.clip_artist;

	#ifdef Q_OS_WIN
	filename = Helper::changeSlashes(filename);
	#endif

	if (name.isEmpty()) {
		QFileInfo fi(filename);
		if (fi.exists()) {
			// Local file
			name = fi.fileName();
		} else {
			// Stream
			name = filename;
		}
	}
	if (!artist.isEmpty()) name = artist + " - " + name;

	int pos=0;
	PlaylistItemList::iterator it;
	for ( it = pl.begin(); it != pl.end(); ++it ) {
		if ( (*it).filename() == filename ) {
			if ((*it).duration()<1) {
				if (!name.isEmpty()) {
					(*it).setName(name);
				}
				(*it).setDuration(duration);
				//setModified( true );
			} 
			else 
			// Edited name (sets duration to 1)
			if ((*it).duration()==1) {
				(*it).setDuration(duration);
				//setModified( true );
			}
			setCurrentItem(pos);
		}
		pos++;
	}
	updateView();
}

// Add current file to playlist
void Playlist::addCurrentFile() {
	qDebug("Playlist::addCurrentFile");
	if (!core->mdat.filename.isEmpty()) {
		addItem( core->mdat.filename, "", 0 );
		getMediaInfo();
	}
}

void Playlist::addFiles() {
	QStringList files = MyFileDialog::getOpenFileNames(
                            this, tr("Select one or more files to open"), 
                            lastDir(),
                            tr("All files") +" (*.*)" );

	if (files.count()!=0) addFiles(files);  
}

void Playlist::addFiles(QStringList files, AutoGetInfo auto_get_info) {
	qDebug("Playlist::addFiles");

#if USE_INFOPROVIDER
	bool get_info = (auto_get_info == GetInfo);
	if (auto_get_info == UserDefined) {
                get_info = pref->auto_get_info;
	}

	MediaData data;
	setCursor(Qt::WaitCursor);
#endif

    QStringList::Iterator it = files.begin();
    while( it != files.end() ) {
#if USE_INFOPROVIDER
		if ( (get_info) && (QFile::exists((*it))) ) {
			data = InfoProvider::getInfo( (*it) );
			addItem( (*it), data.displayName(), data.duration );
			//updateView();
			//qApp->processEvents();
		} else {
                        addItem( (*it), "", 0 );
		}
#else
        addItem( (*it), "", 0 );
#endif

		if (QFile::exists(*it)) {
			latest_dir = QFileInfo((*it)).absolutePath();
		}

        ++it;
    }
#if USE_INFOPROVIDER
	unsetCursor();
#endif
	updateView();

	qDebug( "Playlist::addFiles: latest_dir: '%s'", latest_dir.toUtf8().constData() );
}

void Playlist::addFile(QString file, AutoGetInfo auto_get_info) {
	addFiles( QStringList() << file, auto_get_info );
}

void Playlist::addDirectory() {
	QString s = MyFileDialog::getExistingDirectory(
                    this, tr("Choose a directory"),
                    lastDir() );

	if (!s.isEmpty()) {
		addDirectory(s);
		latest_dir = s;
	}
}

void Playlist::addOneDirectory(QString dir) {
	QStringList filelist;

	Extensions e;
	QRegExp rx_ext(e.multimedia().forRegExp());
	rx_ext.setCaseSensitivity(Qt::CaseInsensitive);

	QStringList dir_list = QDir(dir).entryList();

	QString filename;
    QStringList::Iterator it = dir_list.begin();
    while( it != dir_list.end() ) {
		filename = dir;
		if (filename.right(1)!="/") filename += "/";
		filename += (*it);
		QFileInfo fi(filename);
		if (!fi.isDir()) {
			if (rx_ext.indexIn(fi.suffix()) > -1) {
				filelist << filename;
			}
		}
		++it;
	}
	addFiles(filelist);
}

void Playlist::addDirectory(QString dir) {
	addOneDirectory(dir);

        if (pref->recursive_add_directory) {
		QFileInfoList dir_list = QDir(dir).entryInfoList(QStringList() << "*", QDir::AllDirs | QDir::NoDotAndDotDot);
		for (int n=0; n < dir_list.count(); n++) {
			if (dir_list[n].isDir()) {
				qDebug("Playlist::addDirectory: adding directory: %s", dir_list[n].filePath().toUtf8().data());
				addDirectory(dir_list[n].filePath());
			}
		}
	}
}

// Remove selected items
void Playlist::removeSelected() {
	qDebug("Playlist::removeSelected");

	int first_selected = -1;
	int number_previous_item = 0;

	for (int n=0; n < listView->rowCount(); n++) {
		if (listView->isSelected(n, 0)) {
			qDebug(" row %d selected", n);
			pl[n].setMarkForDeletion(TRUE);
			number_previous_item++;
			if (first_selected == -1) first_selected = n;
		}
	}

	PlaylistItemList::iterator it;
	for ( it = pl.begin(); it != pl.end(); ++it ) {
		if ( (*it).markedForDeletion() ) {
			qDebug("Remove '%s'", (*it).filename().toUtf8().data());
			it = pl.erase(it);
			it--;
			setModified( true );
		}
	}


    if (first_selected < current_item) {
        current_item -= number_previous_item;
    }

	if (isEmpty()) setModified(false);
	updateView();

	if (first_selected >= listView->rowCount()) 
		first_selected = listView->rowCount() - 1;

	if ( ( first_selected > -1) && ( first_selected < listView->rowCount() ) ) {
		listView->clearSelection();
		listView->setCurrentCell( first_selected, 0);
		//listView->selectRow( first_selected );
	}
}

void Playlist::removeAll() {
	/*
	pl.clear();
	updateView();
	setModified( false );
	*/
	clear();
}

void Playlist::clearPlayedTag() {
	PlaylistItemList::iterator it;
	for ( it = pl.begin(); it != pl.end(); ++it ) {
		(*it).setPlayed(FALSE);
	}
	updateView();
}

int Playlist::chooseRandomItem() {
	qDebug( "Playlist::chooseRandomItem");
	QList <int> fi; //List of not played items (free items)

	int n=0;
	PlaylistItemList::iterator it;
	for ( it = pl.begin(); it != pl.end(); ++it ) {
		if (! (*it).played() ) fi.append(n);
		n++;
	}

	qDebug(" * free items: %d", fi.count() );

	if (fi.count()==0) return -1; // none free

	qDebug(" * items: ");
	for (int i=0; i < fi.count(); i++) {
		qDebug("   * item: %d", fi[i]);
	}

	int selected = (int) ((double) fi.count() * rand()/(RAND_MAX+1.0));
	qDebug(" * selected item: %d (%d)", selected, fi[selected]);
	return fi[selected];
}

void Playlist::swapItems(int item1, int item2 ) {
	PlaylistItem it1 = pl[item1];
	pl[item1] = pl[item2];
	pl[item2] = it1;
	setModified( true );
}


void Playlist::upItem() {
	qDebug("Playlist::upItem");

	int current = listView->currentRow();
	qDebug(" currentRow: %d", current );

	if (current >= 1) {
		swapItems( current, current-1 );
		if (current_item == (current-1)) current_item = current;
		else
		if (current_item == current) current_item = current-1;
		updateView();
		listView->clearSelection();
		listView->setCurrentCell( current-1, 0);
	}
}

void Playlist::downItem() {
	qDebug("Playlist::downItem");

	int current = listView->currentRow();
	qDebug(" currentRow: %d", current );

	if ( (current > -1) && (current < (pl.count()-1)) ) {
		swapItems( current, current+1 );
		if (current_item == (current+1)) current_item = current;
		else
		if (current_item == current) current_item = current+1;
		updateView();
		listView->clearSelection();
		listView->setCurrentCell( current+1, 0);
	}
}

void Playlist::editCurrentItem() {
	int current = listView->currentRow();
	if (current > -1) editItem(current);
}

void Playlist::editItem(int item) {
	QString current_name = pl[item].name();
	if (current_name.isEmpty()) current_name = pl[item].filename();

	bool ok;
	QString text = QInputDialog::getText( this,
            tr("Edit name"), 
            tr("Type the name that will be displayed in the playlist for this file:"), 
            QLineEdit::Normal,
            current_name, &ok );
    if ( ok && !text.isEmpty() ) {
        // user entered something and pressed OK
		pl[item].setName(text);

		// If duration == 0 the name will be overwritten!
		if (pl[item].duration()<1) pl[item].setDuration(1); 
		updateView();

		setModified( true );
    } 
}

void Playlist::editPreferences() {
        return;/*
	PlaylistPreferences d(this);

	d.setDirectoryRecursion(recursive_add_directory);
	d.setAutoGetInfo(automatically_get_info);
	d.setSavePlaylistOnExit(save_playlist_in_config);
	d.setPlayFilesFromStart(play_files_from_start);

	if (d.exec() == QDialog::Accepted) {
		recursive_add_directory = d.directoryRecursion();
		automatically_get_info = d.autoGetInfo();
		save_playlist_in_config = d.savePlaylistOnExit();
		play_files_from_start = d.playFilesFromStart();
        }*/
}

// Drag&drop
void Playlist::dragEnterEvent( QDragEnterEvent *e ) {
	qDebug("Playlist::dragEnterEvent");

	if (e->mimeData()->hasUrls()) {
		e->acceptProposedAction();
	}
}

void Playlist::dropEvent( QDropEvent *e ) {
	qDebug("Playlist::dropEvent");

	QStringList files;

	if (e->mimeData()->hasUrls()) {
		QList <QUrl> l = e->mimeData()->urls();
		QString s;
		for (int n=0; n < l.count(); n++) {
			if (l[n].isValid()) {
				qDebug("Playlist::dropEvent: scheme: '%s'", l[n].scheme().toUtf8().data());
				if (l[n].scheme() == "file") 
					s = l[n].toLocalFile();
				else
					s = l[n].toString();
				/*
				qDebug(" * '%s'", l[n].toString().toUtf8().data());
				qDebug(" * '%s'", l[n].toLocalFile().toUtf8().data());
				*/
				qDebug("Playlist::dropEvent: file: '%s'", s.toUtf8().data());
				files.append(s);
			}
		}
	}


	QStringList only_files;
	for (int n = 0; n < files.count(); n++) {
		if ( QFileInfo( files[n] ).isDir() ) {
			addDirectory( files[n] );
		} else {
			only_files.append( files[n] );
		}
	}
	addFiles( only_files );
}


void Playlist::hideEvent( QHideEvent * ) {
	emit visibilityChanged(false);
}

void Playlist::showEvent( QShowEvent * ) {
	emit visibilityChanged(true);
}

void Playlist::closeEvent( QCloseEvent * e )  {
	saveSettings();
	e->accept();
}


void Playlist::maybeSaveSettings() {
	qDebug("Playlist::maybeSaveSettings");
	if (isModified()) saveSettings();
}

void Playlist::saveSettings() {
	qDebug("Playlist::saveSettings");

	QSettings * set = settings;

	set->beginGroup( "playlist");

	set->setValue( "repeat", repeatAct->isChecked() );
	set->setValue( "shuffle", shuffleAct->isChecked() );

        set->setValue( "automatically_play_next", automatically_play_next );

	set->setValue( "row_spacing", row_spacing );

#if !DOCK_PLAYLIST
	set->setValue( "size", size() );
#endif
	set->setValue( "latest_dir", latest_dir );

	set->endGroup();

        if (pref->save_playlist_in_config) {
		//Save current list
		set->beginGroup( "playlist_contents");

		set->setValue( "count", (int) pl.count() );
		for ( int n=0; n < pl.count(); n++ ) {
			set->setValue( QString("item_%1_filename").arg(n), pl[n].filename() );
			set->setValue( QString("item_%1_duration").arg(n), pl[n].duration() );
			set->setValue( QString("item_%1_name").arg(n), pl[n].name() );
		}
		set->setValue( "current_item", current_item );
		set->setValue( "modified", modified );

		set->endGroup();
	}
}

void Playlist::loadSettings() {
	qDebug("Playlist::loadSettings");

	QSettings * set = settings;

	set->beginGroup( "playlist");

	repeatAct->setChecked( set->value( "repeat", repeatAct->isChecked() ).toBool() );
	shuffleAct->setChecked( set->value( "shuffle", shuffleAct->isChecked() ).toBool() );

        automatically_play_next = set->value( "automatically_play_next", automatically_play_next ).toBool();

	row_spacing = set->value( "row_spacing", row_spacing ).toInt();        

#if !DOCK_PLAYLIST
	resize( set->value("size", size()).toSize() );
#endif

	latest_dir = set->value( "latest_dir", latest_dir ).toString();

	set->endGroup();

        if (pref->save_playlist_in_config) {
		//Load latest list
		set->beginGroup( "playlist_contents");

		int count = set->value( "count", 0 ).toInt();
		QString filename, name;
		double duration;
		for ( int n=0; n < count; n++ ) {
			filename = set->value( QString("item_%1_filename").arg(n), "" ).toString();
			duration = set->value( QString("item_%1_duration").arg(n), -1 ).toDouble();
			name = set->value( QString("item_%1_name").arg(n), "" ).toString();
			addItem( filename, name, duration );
		}
		setCurrentItem( set->value( "current_item", -1 ).toInt() );
		setModified( set->value( "modified", false ).toBool() );
		updateView();

		set->endGroup();
	}
}

QString Playlist::lastDir() {
	QString last_dir = latest_dir;
	if (last_dir.isEmpty()) last_dir = pref->latest_dir;
	return last_dir;
}

void Playlist::toggleRepeat(bool checked)
{
    repeatAct->setChecked(checked);
}

void Playlist::toggleShuffle(bool checked)
{
    shuffleAct->setChecked(checked);
}

// Language change stuff
void Playlist::changeEvent(QEvent *e) {
	if (e->type() == QEvent::LanguageChange) {
		retranslateStrings();
	} else {
		QWidget::changeEvent(e);
	}
}

void Playlist::checkNextPrevAvailability()
{
    int current = listView->currentRow();
    if (current > -1) {
        if(current > 0)
        {
            emit prevAvailable(true);
        }
        else
        {
            emit prevAvailable(false);
        }
        if(current == listView->rowCount() - 1)
        {
            emit nextAvailable(false);
        }
        else
        {
            emit nextAvailable(true);
        }
    }
    else
    {
        emit nextAvailable(false);
        emit prevAvailable(false);
    }
}

#include "moc_playlist.cpp"
