///////////////////////////////////////////////////////////////////////////////
// LameXP - Audio Encoder Front-End
// Copyright (C) 2004-2010 LoRd_MuldeR <MuldeR2@GMX.de>
//
// 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// http://www.gnu.org/licenses/gpl-2.0.txt
///////////////////////////////////////////////////////////////////////////////

#include "Dialog_MainWindow.h"

//LameXP includes
#include "Global.h"
#include "Resource.h"
#include "Dialog_WorkingBanner.h"
#include "Dialog_MetaInfo.h"
#include "Thread_FileAnalyzer.h"

//Qt includes
#include <QMessageBox>
#include <QTimer>
#include <QDesktopWidget>
#include <QDate>
#include <QFileDialog>
#include <QInputDialog>
#include <QFileSystemModel>
#include <QDesktopServices>
#include <QUrl>

//Win32 includes
#include <Windows.h>

////////////////////////////////////////////////////////////
// Constructor
////////////////////////////////////////////////////////////

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
	//Init the dialog, from the .ui file
	setupUi(this);
	
	//Register meta types
	qRegisterMetaType<AudioFileModel>("AudioFileModel");

	//Update window title
	if(lamexp_version_demo())
	{
		setWindowTitle(windowTitle().append(" [DEMO VERSION]"));
	}

	//Enabled main buttons
	connect(buttonAbout, SIGNAL(clicked()), this, SLOT(aboutButtonClicked()));
	connect(buttonStart, SIGNAL(clicked()), this, SLOT(encodeButtonClicked()));

	//Setup tab widget
	tabWidget->setCurrentIndex(0);
	connect(tabWidget, SIGNAL(currentChanged(int)), this, SLOT(tabPageChanged(int)));

	//Setup "Source" tab
	m_fileListModel = new FileListModel();
	sourceFileView->setModel(m_fileListModel);
	sourceFileView->verticalHeader()->setResizeMode(QHeaderView::ResizeToContents);
	sourceFileView->horizontalHeader()->setResizeMode(QHeaderView::ResizeToContents);
	connect(buttonAddFiles, SIGNAL(clicked()), this, SLOT(addFilesButtonClicked()));
	connect(buttonRemoveFile, SIGNAL(clicked()), this, SLOT(removeFileButtonClicked()));
	connect(buttonClearFiles, SIGNAL(clicked()), this, SLOT(clearFilesButtonClicked()));
	connect(buttonFileUp, SIGNAL(clicked()), this, SLOT(fileUpButtonClicked()));
	connect(buttonFileDown, SIGNAL(clicked()), this, SLOT(fileDownButtonClicked()));
	connect(buttonEditMeta, SIGNAL(clicked()), this, SLOT(editMetaButtonClicked()));
	
	//Setup "Output" tab
	m_fileSystemModel = new QFileSystemModel();
	m_fileSystemModel->setFilter(QDir::Dirs | QDir::NoDotAndDotDot);
	m_fileSystemModel->setRootPath(m_fileSystemModel->rootPath());
	outputFolderView->setModel(m_fileSystemModel);
	outputFolderView->header()->setStretchLastSection(true);
	outputFolderView->header()->hideSection(1);
	outputFolderView->header()->hideSection(2);
	outputFolderView->header()->hideSection(3);
	outputFolderView->setHeaderHidden(true);
	outputFolderView->setAnimated(true);
	connect(outputFolderView, SIGNAL(clicked(QModelIndex)), this, SLOT(outputFolderViewClicked(QModelIndex)));
	outputFolderView->setCurrentIndex(m_fileSystemModel->index(QDesktopServices::storageLocation(QDesktopServices::MusicLocation)));
	outputFolderViewClicked(outputFolderView->currentIndex());
	connect(buttonMakeFolder, SIGNAL(clicked()), this, SLOT(makeFolderButtonClicked()));
	connect(buttonGotoHome, SIGNAL(clicked()), SLOT(gotoHomeFolderButtonClicked()));
	connect(buttonGotoDesktop, SIGNAL(clicked()), this, SLOT(gotoDesktopButtonClicked()));
	connect(buttonGotoMusic, SIGNAL(clicked()), this, SLOT(gotoMusicFolderButtonClicked()));
	
	//Activate file menu actions
	connect(actionOpenFolder, SIGNAL(triggered()), this, SLOT(openFolderActionActivated()));

	//Activate view menu actions
	m_tabActionGroup = new QActionGroup(this);
	m_tabActionGroup->addAction(actionSourceFiles);
	m_tabActionGroup->addAction(actionOutputDirectory);
	m_tabActionGroup->addAction(actionCompression);
	m_tabActionGroup->addAction(actionMetaData);
	m_tabActionGroup->addAction(actionAdvancedOptions);
	actionSourceFiles->setChecked(true);
	connect(m_tabActionGroup, SIGNAL(triggered(QAction*)), this, SLOT(tabActionActivated(QAction*)));

	//Activate help menu actions
	connect(actionCheckUpdates, SIGNAL(triggered()), this, SLOT(checkUpdatesActionActivated()));
	connect(actionVisitHomepage, SIGNAL(triggered()), this, SLOT(visitHomepageActionActivated()));
	
	//Center window in screen
	QRect desktopRect = QApplication::desktop()->screenGeometry();
	QRect thisRect = this->geometry();
	move((desktopRect.width() - thisRect.width()) / 2, (desktopRect.height() - thisRect.height()) / 2);
	setMinimumSize(thisRect.width(), thisRect.height());

	//Create banner
	m_banner = new WorkingBanner(this);
}

////////////////////////////////////////////////////////////
// Destructor
////////////////////////////////////////////////////////////

MainWindow::~MainWindow(void)
{
	LAMEXP_DELETE(m_tabActionGroup);
	LAMEXP_DELETE(m_fileListModel);
	LAMEXP_DELETE(m_banner);
}

////////////////////////////////////////////////////////////
// PUBLIC FUNCTIONS
////////////////////////////////////////////////////////////

/*NONE*/

////////////////////////////////////////////////////////////
// Slots
////////////////////////////////////////////////////////////

/*
 * About button
 */
void MainWindow::aboutButtonClicked(void)
{
	QString aboutText;
	
	aboutText += "<b><font size=\"+1\">LameXP - Audio Encoder Front-end</font></b><br>";
	aboutText += "Copyright (C) 2004-2010 LoRd_MuldeR <a href=\"mailto:mulder2@gmx.de\">&lt;MuldeR2@GMX.de&gt;</a><br>";
	aboutText += QString().sprintf("Version %d.%02d %s, Build %d [%s]<br><br>", lamexp_version_major(), lamexp_version_minor(), lamexp_version_release(), lamexp_version_build(), lamexp_version_date().toString(Qt::ISODate).toLatin1().constData());
	aboutText += "Please visit <a href=\"http://mulder.dummwiedeutsch.de/\">http://mulder.dummwiedeutsch.de/</a> for news and updates!<br><hr><br>";
	aboutText += "This program is free software; you can redistribute it and/or<br>";
	aboutText += "modify it under the terms of the GNU General Public License<br>";
	aboutText += "as published by the Free Software Foundation; either version 2<br>";
	aboutText += "of the License, or (at your option) any later version.<br><br>";
	aboutText += "This program is distributed in the hope that it will be useful,<br>";
	aboutText += "but WITHOUT ANY WARRANTY; without even the implied warranty of<br>";
	aboutText += "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the<br>";
	aboutText += "GNU General Public License for more details.<br><br>";
	aboutText += "You should have received a copy of the GNU General Public License<br>";
	aboutText += "along with this program; if not, write to the Free Software<br>";
	aboutText += "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.<br><hr><br>";
	aboutText += "This software uses the 'slick' icon set by <a href=\"http://www.famfamfam.com/lab/icons/silk/\">http://www.famfamfam.com/</a>.<br>";
	aboutText += "Released under the Creative Commons Attribution 2.5 License.<br>";
	
	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
	PlaySound(MAKEINTRESOURCE(IDR_WAVE_ABOUT), GetModuleHandle(NULL), SND_RESOURCE | SND_SYNC);
	QApplication::restoreOverrideCursor();

	while(1)
	{
		switch(QMessageBox::information(this, "About LameXP", aboutText, " More about... ", " About Qt... ", " Discard "))
		{
		case 0:
			{
				QString moreAboutText;
				moreAboutText += "The following third-party software is used in LameXP:<br><br>";
				moreAboutText += "<b>LAME - OpenSource mp3 Encoder</b><br>Released under the terms of the GNU Leser General Public License.<br><a href=\"http://lame.sourceforge.net/\">http://lame.sourceforge.net/</a><br><br>";
				moreAboutText += "<b>OggEnc - Ogg Vorbis Encoder</b><br>Completely open and patent-free audio encoding technology.<br><a href=\"http://www.vorbis.com/\">http://www.vorbis.com/</a><br><br>";
				moreAboutText += "<b>Nero AAC reference MPEG-4 Encoder</b><br>Freeware state-of-the-art HE-AAC encoder with 2-Pass support.<br><a href=\"http://www.nero.com/eng/technologies-aac-codec.html\">http://www.nero.com/eng/technologies-aac-codec.html</a><br>";
				QMessageBox::information(this, "About third-party tools", moreAboutText, "Discard");
				break;
			}
		case 1:
			QMessageBox::aboutQt(this);
			break;
		default:
			return;
		}
	}
}

/*
 * Encode button
 */
void MainWindow::encodeButtonClicked(void)
{
	QMessageBox::warning(this, "LameXP", "Not implemented yet, please try again with a later version!");
}

/*
 * Add file(s) button
 */
void MainWindow::addFilesButtonClicked(void)
{
	tabWidget->setCurrentIndex(0);
	QStringList selectedFiles = QFileDialog::getOpenFileNames(this, "Add file(s)", QString(), "All supported files (*.*)");
	
	if(selectedFiles.isEmpty())
	{
		return;
	}

	FileAnalyzer *analyzer = new FileAnalyzer(selectedFiles);
	connect(analyzer, SIGNAL(fileSelected(QString)), m_banner, SLOT(setText(QString)), Qt::QueuedConnection);
	connect(analyzer, SIGNAL(fileAnalyzed(AudioFileModel)), m_fileListModel, SLOT(addFile(AudioFileModel)), Qt::QueuedConnection);

	m_banner->show("Adding file(s), please wait...", analyzer);
	LAMEXP_DELETE(analyzer);
	
	sourceFileView->scrollToBottom();
	m_banner->close();
}

/*
 * Open folder action
 */
void MainWindow::openFolderActionActivated(void)
{
	QString selectedFolder = QFileDialog::getExistingDirectory(this, "Add folder", QDesktopServices::storageLocation(QDesktopServices::MusicLocation));
	
	if(!selectedFolder.isEmpty())
	{
		QDir sourceDir(selectedFolder);
		QFileInfoList fileInfoList = sourceDir.entryInfoList(QDir::Files);
		QStringList fileList;

		while(!fileInfoList.isEmpty())
		{
			fileList << fileInfoList.takeFirst().absoluteFilePath();
		}
		
		FileAnalyzer *analyzer = new FileAnalyzer(fileList);
		connect(analyzer, SIGNAL(fileSelected(QString)), m_banner, SLOT(setText(QString)), Qt::QueuedConnection);
		connect(analyzer, SIGNAL(fileAnalyzed(AudioFileModel)), m_fileListModel, SLOT(addFile(AudioFileModel)), Qt::QueuedConnection);

		m_banner->show("Adding folder, please wait...", analyzer);
		LAMEXP_DELETE(analyzer);
	
		sourceFileView->scrollToBottom();
		m_banner->close();
	}
}

/*
 * Remove file button
 */
void MainWindow::removeFileButtonClicked(void)
{
	if(sourceFileView->currentIndex().isValid())
	{
		int iRow = sourceFileView->currentIndex().row();
		m_fileListModel->removeFile(sourceFileView->currentIndex());
		sourceFileView->selectRow(iRow < m_fileListModel->rowCount() ? iRow : m_fileListModel->rowCount()-1);
	}
}

/*
 * Clear files button
 */
void MainWindow::clearFilesButtonClicked(void)
{
	m_fileListModel->clearFiles();
}

/*
 * Move file up button
 */
void MainWindow::fileUpButtonClicked(void)
{
	if(sourceFileView->currentIndex().isValid())
	{
		int iRow = sourceFileView->currentIndex().row() - 1;
		m_fileListModel->moveFile(sourceFileView->currentIndex(), -1);
		sourceFileView->selectRow(iRow >= 0 ? iRow : 0);
	}
}

/*
 * Move file down button
 */
void MainWindow::fileDownButtonClicked(void)
{
	if(sourceFileView->currentIndex().isValid())
	{
		int iRow = sourceFileView->currentIndex().row() + 1;
		m_fileListModel->moveFile(sourceFileView->currentIndex(), 1);
		sourceFileView->selectRow(iRow < m_fileListModel->rowCount() ? iRow : m_fileListModel->rowCount()-1);
	}
}

/*
 * Edit meta button
 */
void MainWindow::editMetaButtonClicked(void)
{
	int iResult = 0;
	MetaInfoDialog *metaInfoDialog = new MetaInfoDialog(this);
	QModelIndex index = sourceFileView->currentIndex();

	while(index.isValid())
	{
		if(iResult > 0)
		{
			index = m_fileListModel->index(index.row() + 1, index.column()); 
			sourceFileView->selectRow(index.row());
		}
		if(iResult < 0)
		{
			index = m_fileListModel->index(index.row() - 1, index.column()); 
			sourceFileView->selectRow(index.row());
		}

		AudioFileModel file = m_fileListModel->getFile(index);
		iResult = metaInfoDialog->exec(file, index.row() > 0, index.row() < m_fileListModel->rowCount() - 1);
		m_fileListModel->setFile(index, file);

		if(!iResult) break;
	}

	LAMEXP_DELETE(metaInfoDialog);
}

/*
 * Tab page changed
 */
void MainWindow::tabPageChanged(int idx)
{
	switch(idx)
	{
	case 0:
		actionSourceFiles->setChecked(true);
		break;
	case 1:
		actionOutputDirectory->setChecked(true);
		break;
	case 2:
		actionCompression->setChecked(true);
		break;
	case 3:
		actionMetaData->setChecked(true);
		break;
	case 4:
		actionAdvancedOptions->setChecked(true);
		break;
	}
}

/*
 * Tab action triggered
 */
void MainWindow::tabActionActivated(QAction *action)
{
	int idx = -1;

	if(actionSourceFiles == action) idx = 0;
	else if(actionOutputDirectory == action) idx = 1;
	else if(actionCompression == action) idx = 2;
	else if(actionMetaData == action) idx = 3;
	else if(actionAdvancedOptions == action) idx = 4;

	if(idx >= 0)
	{
		tabWidget->setCurrentIndex(idx);
	}
}

/*
 * Output folder changed
 */
void MainWindow::outputFolderViewClicked(const QModelIndex &index)
{
	QString selectedDir = m_fileSystemModel->filePath(index);
	if(selectedDir.length() < 3) selectedDir.append(QDir::separator());
	outputFolderLabel->setText(selectedDir);
}


/*
 * Goto desktop button
 */
void MainWindow::gotoDesktopButtonClicked(void)
{
	outputFolderView->setCurrentIndex(m_fileSystemModel->index(QDesktopServices::storageLocation(QDesktopServices::DesktopLocation)));
	outputFolderViewClicked(outputFolderView->currentIndex());
	outputFolderView->setFocus();
}

/*
 * Goto home folder button
 */
void MainWindow::gotoHomeFolderButtonClicked(void)
{
	outputFolderView->setCurrentIndex(m_fileSystemModel->index(QDesktopServices::storageLocation(QDesktopServices::HomeLocation)));
	outputFolderViewClicked(outputFolderView->currentIndex());
	outputFolderView->setFocus();
}

/*
 * Goto music folder button
 */
void MainWindow::gotoMusicFolderButtonClicked(void)
{
	outputFolderView->setCurrentIndex(m_fileSystemModel->index(QDesktopServices::storageLocation(QDesktopServices::MusicLocation)));
	outputFolderViewClicked(outputFolderView->currentIndex());
	outputFolderView->setFocus();
}

/*
 * Make folder button
 */
void MainWindow::makeFolderButtonClicked(void)
{
	QDir basePath(m_fileSystemModel->filePath(outputFolderView->currentIndex()));
	
	bool bApplied = true;
	QString folderName = QInputDialog::getText(this, "New Folder", "Enter the name of the new folder:", QLineEdit::Normal, "New folder", &bApplied, Qt::WindowStaysOnTopHint).simplified();

	if(bApplied)
	{
		folderName.remove(":", Qt::CaseInsensitive);
		folderName.remove("/", Qt::CaseInsensitive);
		folderName.remove("\\", Qt::CaseInsensitive);
		folderName.remove("?", Qt::CaseInsensitive);
		folderName.remove("*", Qt::CaseInsensitive);
		folderName.remove("<", Qt::CaseInsensitive);
		folderName.remove(">", Qt::CaseInsensitive);
		
		int i = 1;
		QString newFolder = folderName;

		while(basePath.exists(newFolder))
		{
			newFolder = QString(folderName).append(QString().sprintf(" (%d)", ++i));
		}
		
		if(basePath.mkdir(newFolder))
		{
			QDir createdDir = basePath;
			if(createdDir.cd(newFolder))
			{
				outputFolderView->setCurrentIndex(m_fileSystemModel->index(createdDir.absolutePath()));
				outputFolderViewClicked(outputFolderView->currentIndex());
				outputFolderView->setFocus();
			}
		}
		else
		{
			QMessageBox::warning(this, "Failed to create folder", QString("The folder '%1' could not be created!").arg(newFolder));
		}
	}
}


/*
 * Visit homepage action
 */
void MainWindow::visitHomepageActionActivated(void)
{
	QDesktopServices::openUrl(QUrl("http://mulder.dummwiedeutsch.de/"));
}

/*
 * Check for updates action
 */
void MainWindow::checkUpdatesActionActivated(void)
{
	m_banner->show("Checking for updates, please be patient...");
	
	for(int i = 0; i < 300; i++)
	{
		QApplication::processEvents();
		Sleep(5);
	}
	
	m_banner->close();
	
	QMessageBox::information(this, "Update Check", "Your version of LameXP is still up-to-date. There are no updates available.\nPlease remember to check for updates at regular intervals!");
}