///////////////////////////////////////////////////////////////////////////////
// Simple x264 Launcher
// Copyright (C) 2004-2012 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 "win_main.h"

#include "global.h"
#include "model_jobList.h"
#include "model_options.h"
#include "win_addJob.h"
#include "win_preferences.h"
#include "resource.h"

#include <QDate>
#include <QTimer>
#include <QCloseEvent>
#include <QMessageBox>
#include <QDesktopServices>
#include <QUrl>
#include <QDir>
#include <QLibrary>
#include <QProcess>
#include <QProgressDialog>

#include <Mmsystem.h>

const char *home_url = "http://mulder.brhack.net/";

#define SET_FONT_BOLD(WIDGET,BOLD) { QFont _font = WIDGET->font(); _font.setBold(BOLD); WIDGET->setFont(_font); }
#define SET_TEXT_COLOR(WIDGET,COLOR) { QPalette _palette = WIDGET->palette(); _palette.setColor(QPalette::WindowText, (COLOR)); _palette.setColor(QPalette::Text, (COLOR)); WIDGET->setPalette(_palette); }

///////////////////////////////////////////////////////////////////////////////
// Constructor & Destructor
///////////////////////////////////////////////////////////////////////////////

MainWindow::MainWindow(bool x64supported)
:
	m_x64supported(x64supported),
	m_appDir(QApplication::applicationDirPath()),
	m_firstShow(true)
{
	//Init the dialog, from the .ui file
	setupUi(this);
	setWindowFlags(windowFlags() & (~Qt::WindowMaximizeButtonHint));

	//Register meta types
	qRegisterMetaType<QUuid>("QUuid");
	qRegisterMetaType<EncodeThread::JobStatus>("EncodeThread::JobStatus");

	//Load preferences
	memset(&m_preferences, 0, sizeof(PreferencesDialog::Preferences));
	PreferencesDialog::loadPreferences(&m_preferences);

	//Freeze minimum size
	setMinimumSize(size());
	splitter->setSizes(QList<int>() << 16 << 196);

	//Update title
	labelBuildDate->setText(tr("Built on %1 at %2").arg(x264_version_date().toString(Qt::ISODate), QString::fromLatin1(x264_version_time())));
	labelBuildDate->installEventFilter(this);
	setWindowTitle(QString("%1 (%2 Mode)").arg(windowTitle(), m_x64supported ? "64-Bit" : "32-Bit"));
	if(x264_is_prerelease()) setWindowTitle(QString("%1 | PRE-RELEASE VERSION").arg(windowTitle()));
	
	//Create model
	m_jobList = new JobListModel();
	connect(m_jobList, SIGNAL(dataChanged(QModelIndex, QModelIndex)), this, SLOT(jobChangedData(QModelIndex, QModelIndex)));
	jobsView->setModel(m_jobList);
	
	//Setup view
	jobsView->horizontalHeader()->setSectionHidden(3, true);
	jobsView->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch);
	jobsView->horizontalHeader()->setResizeMode(1, QHeaderView::Fixed);
	jobsView->horizontalHeader()->setResizeMode(2, QHeaderView::Fixed);
	jobsView->horizontalHeader()->resizeSection(1, 150);
	jobsView->horizontalHeader()->resizeSection(2, 90);
	jobsView->verticalHeader()->setResizeMode(QHeaderView::ResizeToContents);
	connect(jobsView->selectionModel(), SIGNAL(currentChanged(QModelIndex, QModelIndex)), this, SLOT(jobSelected(QModelIndex, QModelIndex)));

	//Create context menu
	QAction *actionClipboard = new QAction(QIcon(":/buttons/page_paste.png"), tr("Copy to Clipboard"), logView);
	actionClipboard->setEnabled(false);
	logView->addAction(actionClipboard);
	connect(actionClipboard, SIGNAL(triggered(bool)), this, SLOT(copyLogToClipboard(bool)));
	jobsView->addActions(menuJob->actions());

	//Enable buttons
	connect(buttonAddJob, SIGNAL(clicked()), this, SLOT(addButtonPressed()));
	connect(buttonStartJob, SIGNAL(clicked()), this, SLOT(startButtonPressed()));
	connect(buttonAbortJob, SIGNAL(clicked()), this, SLOT(abortButtonPressed()));
	connect(buttonPauseJob, SIGNAL(toggled(bool)), this, SLOT(pauseButtonPressed(bool)));
	connect(actionJob_Delete, SIGNAL(triggered()), this, SLOT(deleteButtonPressed()));
	connect(actionJob_Browse, SIGNAL(triggered()), this, SLOT(browseButtonPressed()));

	//Enable menu
	connect(actionAbout, SIGNAL(triggered()), this, SLOT(showAbout()));
	connect(actionWebMulder, SIGNAL(triggered()), this, SLOT(showWebLink()));
	connect(actionWebX264, SIGNAL(triggered()), this, SLOT(showWebLink()));
	connect(actionWebKomisar, SIGNAL(triggered()), this, SLOT(showWebLink()));
	connect(actionWebJarod, SIGNAL(triggered()), this, SLOT(showWebLink()));
	connect(actionWebWiki, SIGNAL(triggered()), this, SLOT(showWebLink()));
	connect(actionWebBluRay, SIGNAL(triggered()), this, SLOT(showWebLink()));
	connect(actionPreferences, SIGNAL(triggered()), this, SLOT(showPreferences()));

	//Create floating label
	m_label = new QLabel(jobsView);
	m_label->setText(tr("No job created yet. Please click the 'Add New Job' button!"));
	m_label->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
	SET_TEXT_COLOR(m_label, Qt::darkGray);
	SET_FONT_BOLD(m_label, true);
	m_label->setVisible(true);
	m_label->setContextMenuPolicy(Qt::ActionsContextMenu);
	m_label->addActions(jobsView->actions());
	connect(splitter, SIGNAL(splitterMoved(int, int)), this, SLOT(updateLabel()));
	updateLabel();

	//Create options object
	m_options = new OptionsModel();
}

MainWindow::~MainWindow(void)
{
	X264_DELETE(m_jobList);
	X264_DELETE(m_options);
	X264_DELETE(m_label);

	while(!m_toolsList.isEmpty())
	{
		QFile *temp = m_toolsList.takeFirst();
		X264_DELETE(temp);
	}
}

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

void MainWindow::addButtonPressed(const QString &filePath, bool *ok)
{
	if(ok) *ok = false;
	
	AddJobDialog *addDialog = new AddJobDialog(this, m_options, m_x64supported);
	addDialog->setRunImmediately(countRunningJobs() < (m_preferences.autoRunNextJob ? m_preferences.maxRunningJobCount : 1));
	if(!filePath.isEmpty()) addDialog->setSourceFile(filePath);

	int result = addDialog->exec();
	if(result == QDialog::Accepted)
	{
		EncodeThread *thrd = new EncodeThread
		(
			addDialog->sourceFile(),
			addDialog->outputFile(),
			m_options,
			QString("%1/toolset").arg(m_appDir),
			m_x64supported
		);

		QModelIndex newIndex = m_jobList->insertJob(thrd);

		if(newIndex.isValid())
		{
			if(addDialog->runImmediately())
			{
				jobsView->selectRow(newIndex.row());
				QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
				m_jobList->startJob(newIndex);
			}

			if(ok) *ok = true;
		}
	}

	m_label->setVisible(m_jobList->rowCount(QModelIndex()) == 0);
	X264_DELETE(addDialog);
}

void MainWindow::startButtonPressed(void)
{
	m_jobList->startJob(jobsView->currentIndex());
}

void MainWindow::abortButtonPressed(void)
{
	m_jobList->abortJob(jobsView->currentIndex());
}

void MainWindow::deleteButtonPressed(void)
{
	m_jobList->deleteJob(jobsView->currentIndex());
	m_label->setVisible(m_jobList->rowCount(QModelIndex()) == 0);
}

void MainWindow::browseButtonPressed(void)
{
	QString outputFile = m_jobList->getJobOutputFile(jobsView->currentIndex());
	if((!outputFile.isEmpty()) && QFileInfo(outputFile).exists() && QFileInfo(outputFile).isFile())
	{
		QProcess::startDetached(QString::fromLatin1("explorer.exe"), QStringList() << QString::fromLatin1("/select,") << QDir::toNativeSeparators(outputFile), QFileInfo(outputFile).path());
	}
	else
	{
		QMessageBox::warning(this, tr("Not Found"), tr("Sorry, the output file could not be found!"));
	}
}

void MainWindow::pauseButtonPressed(bool checked)
{
	if(checked)
	{
		m_jobList->pauseJob(jobsView->currentIndex());
	}
	else
	{
		m_jobList->resumeJob(jobsView->currentIndex());
	}
}

void MainWindow::jobSelected(const QModelIndex & current, const QModelIndex & previous)
{
	qDebug("Job selected: %d", current.row());
	
	if(logView->model())
	{
		disconnect(logView->model(), SIGNAL(rowsInserted(QModelIndex, int, int)), this, SLOT(jobLogExtended(QModelIndex, int, int)));
	}
	
	if(current.isValid())
	{
		logView->setModel(m_jobList->getLogFile(current));
		connect(logView->model(), SIGNAL(rowsInserted(QModelIndex, int, int)), this, SLOT(jobLogExtended(QModelIndex, int, int)));
		logView->actions().first()->setEnabled(true);
		QTimer::singleShot(0, logView, SLOT(scrollToBottom()));
	
		progressBar->setValue(m_jobList->getJobProgress(current));
		editDetails->setText(m_jobList->data(m_jobList->index(current.row(), 3, QModelIndex()), Qt::DisplayRole).toString());
		updateButtons(m_jobList->getJobStatus(current));
	}
	else
	{
		logView->setModel(NULL);
		logView->actions().first()->setEnabled(false);
		progressBar->setValue(0);
		editDetails->clear();
		updateButtons(EncodeThread::JobStatus_Undefined);
	}

	progressBar->repaint();
}

void MainWindow::jobChangedData(const QModelIndex &topLeft, const  QModelIndex &bottomRight)
{
	int selected = jobsView->currentIndex().row();
	
	if(topLeft.column() <= 1 && bottomRight.column() >= 1) /*STATUS*/
	{
		for(int i = topLeft.row(); i <= bottomRight.row(); i++)
		{
			EncodeThread::JobStatus status = m_jobList->getJobStatus(m_jobList->index(i, 0, QModelIndex()));
			if(i == selected)
			{
				qDebug("Current job changed status!");
				updateButtons(status);
			}
			if((status == EncodeThread::JobStatus_Completed) || (status == EncodeThread::JobStatus_Failed))
			{
				if(m_preferences.autoRunNextJob) QTimer::singleShot(0, this, SLOT(launchNextJob()));
				if(m_preferences.shutdownComputer) QTimer::singleShot(0, this, SLOT(shutdownComputer()));
			}
		}
	}
	else if(topLeft.column() <= 2 && bottomRight.column() >= 2) /*PROGRESS*/
	{
		for(int i = topLeft.row(); i <= bottomRight.row(); i++)
		{
			if(i == selected)
			{
				progressBar->setValue(m_jobList->getJobProgress(m_jobList->index(i, 0, QModelIndex())));
				break;
			}
		}
	}
	else if(topLeft.column() <= 3 && bottomRight.column() >= 3) /*DETAILS*/
	{
		for(int i = topLeft.row(); i <= bottomRight.row(); i++)
		{
			if(i == selected)
			{
				editDetails->setText(m_jobList->data(m_jobList->index(i, 3, QModelIndex()), Qt::DisplayRole).toString());
				break;
			}
		}
	}
}

void MainWindow::jobLogExtended(const QModelIndex & parent, int start, int end)
{
	QTimer::singleShot(0, logView, SLOT(scrollToBottom()));
}

void MainWindow::showAbout(void)
{
	QString text;

	text += QString().sprintf("<nobr><tt>Simple x264 Launcher v%u.%02u - use 64-Bit x264 with 32-Bit Avisynth<br>", x264_version_major(), x264_version_minor());
	text += QString().sprintf("Copyright (c) 2004-%04d LoRd_MuldeR &lt;mulder2@gmx.de&gt;. Some rights reserved.<br>", qMax(x264_version_date().year(),QDate::currentDate().year()));
	text += QString().sprintf("Built on %s at %s with %s for Win-%s.<br><br>", x264_version_date().toString(Qt::ISODate).toLatin1().constData(), x264_version_time(), x264_version_compiler(), x264_version_arch());
	text += QString().sprintf("This program is free software: you can redistribute it and/or modify<br>");
	text += QString().sprintf("it under the terms of the GNU General Public License &lt;http://www.gnu.org/&gt;.<br>");
	text += QString().sprintf("Note that this program is distributed with ABSOLUTELY NO WARRANTY.<br><br>");
	text += QString().sprintf("Please check the web-site at <a href=\"%s\">%s</a> for updates !!!<br></tt></nobr>", home_url, home_url);

	forever
	{
		int ret = QMessageBox::information(this, tr("About..."), text.replace("-", "&minus;"), tr("About x264"), tr("About Qt"), tr("Close"), 0, 2);

		switch(ret)
		{
		case 0:
			{
				QString text2;
				text2 += tr("<nobr><tt>x264 - the best H.264/AVC encoder. Copyright (c) 2003-2012 x264 project.<br>");
				text2 += tr("Free software library for encoding video streams into the H.264/MPEG-4 AVC format.<br>");
				text2 += tr("Released under the terms of the GNU General Public License.<br><br>");
				text2 += tr("Please visit <a href=\"%1\">%1</a> for obtaining a <u>commercial</u> x264 license!<br></tt></nobr>").arg("http://x264licensing.com/");
				QMessageBox::information(this, tr("About x264"), text2.replace("-", "&minus;"), tr("Close"));
			}
			break;
		case 1:
			QMessageBox::aboutQt(this);
			break;
		default:
			return;
		}
	}
}

void MainWindow::showWebLink(void)
{
	if(QObject::sender() == actionWebMulder) QDesktopServices::openUrl(QUrl(home_url));
	if(QObject::sender() == actionWebX264) QDesktopServices::openUrl(QUrl("http://www.x264.com/"));
	if(QObject::sender() == actionWebKomisar) QDesktopServices::openUrl(QUrl("http://komisar.gin.by/"));
	if(QObject::sender() == actionWebJarod) QDesktopServices::openUrl(QUrl("http://www.x264.nl/"));
	if(QObject::sender() == actionWebWiki) QDesktopServices::openUrl(QUrl("http://mewiki.project357.com/wiki/X264_Settings"));
	if(QObject::sender() == actionWebBluRay) QDesktopServices::openUrl(QUrl("http://www.x264bluray.com/"));
}

void MainWindow::showPreferences(void)
{
	PreferencesDialog *preferences = new PreferencesDialog(this, &m_preferences);
	preferences->exec();
	X264_DELETE(preferences);
}

void MainWindow::launchNextJob(void)
{
	qDebug("launchNextJob(void)");

	
	const int rows = m_jobList->rowCount(QModelIndex());

	if(countRunningJobs() >= m_preferences.maxRunningJobCount)
	{
		qDebug("Still have too many jobs running, won't launch next one yet!");
		return;
	}

	int startIdx= jobsView->currentIndex().isValid() ? qBound(0, jobsView->currentIndex().row(), rows-1) : 0;

	for(int i = 0; i < rows; i++)
	{
		int currentIdx = (i + startIdx) % rows;
		EncodeThread::JobStatus status = m_jobList->getJobStatus(m_jobList->index(currentIdx, 0, QModelIndex()));
		if(status == EncodeThread::JobStatus_Enqueued)
		{
			if(m_jobList->startJob(m_jobList->index(currentIdx, 0, QModelIndex())))
			{
				jobsView->selectRow(currentIdx);
				return;
			}
		}
	}
		
	qWarning("No enqueued jobs left!");
}

void MainWindow::shutdownComputer(void)
{
	qDebug("shutdownComputer(void)");
	
	if(countPendingJobs() > 0)
	{
		qDebug("Still have pending jobs, won't shutdown yet!");
		return;
	}
	
	const int iTimeout = 30;
	const Qt::WindowFlags flags = Qt::WindowStaysOnTopHint | Qt::CustomizeWindowHint | Qt::WindowTitleHint | Qt::MSWindowsFixedSizeDialogHint | Qt::WindowSystemMenuHint;
	const QString text = QString("%1%2%1").arg(QString().fill(' ', 18), tr("Warning: Computer will shutdown in %1 seconds..."));
	
	qWarning("Initiating shutdown sequence!");
	
	QProgressDialog progressDialog(text.arg(iTimeout), tr("Cancel Shutdown"), 0, iTimeout + 1, this, flags);
	QPushButton *cancelButton = new QPushButton(tr("Cancel Shutdown"), &progressDialog);
	cancelButton->setIcon(QIcon(":/buttons/power_on.png"));
	progressDialog.setModal(true);
	progressDialog.setAutoClose(false);
	progressDialog.setAutoReset(false);
	progressDialog.setWindowIcon(QIcon(":/buttons/power_off.png"));
	progressDialog.setWindowTitle(windowTitle());
	progressDialog.setCancelButton(cancelButton);
	progressDialog.show();
	
	QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
	QApplication::setOverrideCursor(Qt::WaitCursor);
	PlaySound(MAKEINTRESOURCE(IDR_WAVE1), GetModuleHandle(NULL), SND_RESOURCE | SND_SYNC);
	QApplication::restoreOverrideCursor();
	
	QTimer timer;
	timer.setInterval(1000);
	timer.start();

	QEventLoop eventLoop(this);
	connect(&timer, SIGNAL(timeout()), &eventLoop, SLOT(quit()));
	connect(&progressDialog, SIGNAL(canceled()), &eventLoop, SLOT(quit()));

	for(int i = 1; i <= iTimeout; i++)
	{
		eventLoop.exec();
		if(progressDialog.wasCanceled())
		{
			progressDialog.close();
			return;
		}
		progressDialog.setValue(i+1);
		progressDialog.setLabelText(text.arg(iTimeout-i));
		if(iTimeout-i == 3) progressDialog.setCancelButton(NULL);
		QApplication::processEvents();
		PlaySound(MAKEINTRESOURCE((i < iTimeout) ? IDR_WAVE2 : IDR_WAVE3), GetModuleHandle(NULL), SND_RESOURCE | SND_SYNC);
	}
	
	qWarning("Shutting down !!!");

	if(x264_shutdown_computer("Simple x264 Launcher: All jobs completed, shutting down!", 10, true))
	{
		qApp->closeAllWindows();
	}
}

void MainWindow::init(void)
{
	static const char *binFiles = "x264.exe:x264_x64.exe:avs2yuv.exe";
	QStringList binaries = QString::fromLatin1(binFiles).split(":", QString::SkipEmptyParts);

	updateLabel();

	//Check all binaries
	while(!binaries.isEmpty())
	{
		qApp->processEvents(QEventLoop::ExcludeUserInputEvents);
		QString current = binaries.takeFirst();
		QFile *file = new QFile(QString("%1/toolset/%2").arg(m_appDir, current));
		if(file->open(QIODevice::ReadOnly))
		{
			bool binaryTypeOkay = false;
			DWORD binaryType;
			if(GetBinaryType(QWCHAR(file->fileName()), &binaryType))
			{
				binaryTypeOkay = (binaryType == SCS_32BIT_BINARY || binaryType == SCS_64BIT_BINARY);
			}
			if(!binaryTypeOkay)
			{
				QMessageBox::critical(this, tr("Invalid File!"), tr("<nobr>At least on required tool is not a valid Win32 or Win64 binary:<br>%1<br><br>Please re-install the program in order to fix the problem!</nobr>").arg(QDir::toNativeSeparators(QString("%1/toolset/%2").arg(m_appDir, current))).replace("-", "&minus;"));
				qFatal(QString("Binary is invalid: %1/toolset/%2").arg(m_appDir, current).toLatin1().constData());
				close(); qApp->exit(-1); return;
			}
			m_toolsList << file;
		}
		else
		{
			X264_DELETE(file);
			QMessageBox::critical(this, tr("File Not Found!"), tr("<nobr>At least on required tool could not be found:<br>%1<br><br>Please re-install the program in order to fix the problem!</nobr>").arg(QDir::toNativeSeparators(QString("%1/toolset/%2").arg(m_appDir, current))).replace("-", "&minus;"));
			qFatal(QString("Binary not found: %1/toolset/%2").arg(m_appDir, current).toLatin1().constData());
			close(); qApp->exit(-1); return;
		}
	}

	//Pre-release popup
	if(x264_is_prerelease())
	{
		qsrand(time(NULL)); int rnd = qrand() % 3;
		int val = QMessageBox::information(this, tr("Pre-Release Version"), tr("Note: This is a pre-release version. Please do NOT use for production!<br>Click the button #%1 in order to continue...<br><br>(There will be no such message box in the final version of this application)").arg(QString::number(rnd + 1)), tr("(1)"), tr("(2)"), tr("(3)"), qrand() % 3);
		if(rnd != val) { close(); qApp->exit(-1); return; }
	}

	//Check for Avisynth support
	bool avsAvailable = false;
	QLibrary *avsLib = new QLibrary("avisynth.dll");
	if(avsLib->load())
	{
		avsAvailable = (avsLib->resolve("avs_create_script_environment") != NULL);
	}
	if(!avsAvailable)
	{
		avsLib->unload(); X264_DELETE(avsLib);
		int val = QMessageBox::warning(this, tr("Avisynth Missing"), tr("<nobr>It appears that Avisynth is not currently installed on your computer.<br>Thus Avisynth input will not be working at all!<br><br>Please download and install Avisynth:<br><a href=\"http://sourceforge.net/projects/avisynth2/files/AviSynth%202.5/\">http://sourceforge.net/projects/avisynth2/files/AviSynth 2.5/</a></nobr>").replace("-", "&minus;"), tr("Quit"), tr("Ignore"));
		if(val != 1) { close(); qApp->exit(-1); return; }
	}

	//Check for expiration
	if(x264_version_date().addMonths(6) < QDate::currentDate())
	{
		QMessageBox msgBox(this);
		msgBox.setIcon(QMessageBox::Information);
		msgBox.setWindowTitle(tr("Update Notification"));
		msgBox.setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint);
		msgBox.setText(tr("<nobr><tt>Oups, this version of 'Simple x264 Launcher' is more than 6 months old.<br><br>Please check the official web-site at <a href=\"%1\">%1</a> for updates!<br></tt></nobr>").replace("-", "&minus;").arg(home_url));
		QPushButton *btn1 = msgBox.addButton(tr("Discard"), QMessageBox::NoRole);
		QPushButton *btn2 = msgBox.addButton(tr("Discard"), QMessageBox::AcceptRole);
		btn1->setEnabled(false);
		btn2->setVisible(false);
		QTimer::singleShot(5000, btn1, SLOT(hide()));
		QTimer::singleShot(5000, btn2, SLOT(show()));
		msgBox.exec();
	}
}

void MainWindow::updateLabel(void)
{
	m_label->setGeometry(0, 0, jobsView->width(), jobsView->height());
}

void MainWindow::copyLogToClipboard(bool checked)
{
	qDebug("copyLogToClipboard");
	
	if(LogFileModel *log = dynamic_cast<LogFileModel*>(logView->model()))
	{
		log->copyToClipboard();
		MessageBeep(MB_ICONINFORMATION);
	}
}

///////////////////////////////////////////////////////////////////////////////
// Event functions
///////////////////////////////////////////////////////////////////////////////

void MainWindow::showEvent(QShowEvent *e)
{
	QMainWindow::showEvent(e);

	if(m_firstShow)
	{
		m_firstShow = false;
		QTimer::singleShot(0, this, SLOT(init()));
	}
}

void MainWindow::closeEvent(QCloseEvent *e)
{
	if(countRunningJobs() > 0)
	{
		e->ignore();
		QMessageBox::warning(this, tr("Jobs Are Running"), tr("Sorry, can not exit while there still are running jobs!"));
		return;
	}
	
	if(countPendingJobs() > 0)
	{
		int ret = QMessageBox::question(this, tr("Jobs Are Pending"), tr("Do you really want to quit and discard the pending jobs?"), QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
		if(ret != QMessageBox::Yes)
		{
			e->ignore();
			return;
		}
	}

	while(m_jobList->rowCount(QModelIndex()) > 0)
	{
		qApp->processEvents(QEventLoop::ExcludeUserInputEvents);
		if(!m_jobList->deleteJob(m_jobList->index(0, 0, QModelIndex())))
		{
			e->ignore();
			QMessageBox::warning(this, tr("Failed To Exit"), tr("Sorry, at least one job could not be deleted!"));
			return;
		}
	}

	qApp->processEvents(QEventLoop::ExcludeUserInputEvents);
	QMainWindow::closeEvent(e);
}

void MainWindow::resizeEvent(QResizeEvent *e)
{
	QMainWindow::resizeEvent(e);
	updateLabel();
}

bool MainWindow::eventFilter(QObject *o, QEvent *e)
{
	if((o == labelBuildDate) && (e->type() == QEvent::MouseButtonPress))
	{
		QTimer::singleShot(0, this, SLOT(showAbout()));
		return true;
	}
	return false;
}

/*
 * File dragged over window
 */
void MainWindow::dragEnterEvent(QDragEnterEvent *event)
{
	QStringList formats = event->mimeData()->formats();
	
	if(formats.contains("application/x-qt-windows-mime;value=\"FileNameW\"", Qt::CaseInsensitive) && formats.contains("text/uri-list", Qt::CaseInsensitive))
	{
		event->acceptProposedAction();
	}
}

/*
 * File dropped onto window
 */
void MainWindow::dropEvent(QDropEvent *event)
{
	QStringList droppedFiles;
	QList<QUrl> urls = event->mimeData()->urls();

	while(!urls.isEmpty())
	{
		QUrl currentUrl = urls.takeFirst();
		QFileInfo file(currentUrl.toLocalFile());
		if(file.exists() && file.isFile())
		{
			qDebug("Dropped File: %s", file.canonicalFilePath().toUtf8().constData());
			droppedFiles << file.canonicalFilePath();
		}
	}
	
	droppedFiles.sort();
	
	bool ok = true;
	while((!droppedFiles.isEmpty()) && ok)
	{
		QString currentFile = droppedFiles.takeFirst();
		qDebug("Adding file: %s", currentFile.toUtf8().constData());
		addButtonPressed(currentFile, &ok);
	}
}

///////////////////////////////////////////////////////////////////////////////
// Private functions
///////////////////////////////////////////////////////////////////////////////

/*Jobs that are not completed (or failed, or aborted) yet*/
unsigned int MainWindow::countPendingJobs(void)
{
	unsigned int count = 0;
	const int rows = m_jobList->rowCount(QModelIndex());

	for(int i = 0; i < rows; i++)
	{
		EncodeThread::JobStatus status = m_jobList->getJobStatus(m_jobList->index(i, 0, QModelIndex()));
		if(status != EncodeThread::JobStatus_Completed && status != EncodeThread::JobStatus_Aborted && status != EncodeThread::JobStatus_Failed)
		{
			count++;
		}
	}

	return count;
}

/*Jobs that are still active, i.e. not terminated or enqueued*/
unsigned int MainWindow::countRunningJobs(void)
{
	unsigned int count = 0;
	const int rows = m_jobList->rowCount(QModelIndex());

	for(int i = 0; i < rows; i++)
	{
		EncodeThread::JobStatus status = m_jobList->getJobStatus(m_jobList->index(i, 0, QModelIndex()));
		if(status != EncodeThread::JobStatus_Completed && status != EncodeThread::JobStatus_Aborted && status != EncodeThread::JobStatus_Failed && status != EncodeThread::JobStatus_Enqueued)
		{
			count++;
		}
	}

	return count;
}

void MainWindow::updateButtons(EncodeThread::JobStatus status)
{
	qDebug("MainWindow::updateButtons(void)");

	buttonStartJob->setEnabled(status == EncodeThread::JobStatus_Enqueued);
	buttonAbortJob->setEnabled(status == EncodeThread::JobStatus_Indexing || status == EncodeThread::JobStatus_Running || status == EncodeThread::JobStatus_Running_Pass1 || status == EncodeThread::JobStatus_Running_Pass2 || status == EncodeThread::JobStatus_Paused);
	buttonPauseJob->setEnabled(status == EncodeThread::JobStatus_Indexing || status == EncodeThread::JobStatus_Running || status == EncodeThread::JobStatus_Paused || status == EncodeThread::JobStatus_Running_Pass1 || status == EncodeThread::JobStatus_Running_Pass2);
	buttonPauseJob->setChecked(status == EncodeThread::JobStatus_Paused || status == EncodeThread::JobStatus_Pausing);

	actionJob_Delete->setEnabled(status == EncodeThread::JobStatus_Completed || status == EncodeThread::JobStatus_Aborted || status == EncodeThread::JobStatus_Failed || status == EncodeThread::JobStatus_Enqueued);
	actionJob_Browse->setEnabled(status == EncodeThread::JobStatus_Completed);

	actionJob_Start->setEnabled(buttonStartJob->isEnabled());
	actionJob_Abort->setEnabled(buttonAbortJob->isEnabled());
	actionJob_Pause->setEnabled(buttonPauseJob->isEnabled());
	actionJob_Pause->setChecked(buttonPauseJob->isChecked());

	editDetails->setEnabled(status != EncodeThread::JobStatus_Paused);
}