///////////////////////////////////////////////////////////////////////////////
// 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_About.h"

#include "Global.h"
#include "Resource.h"

//Qt includes
#include <QDate>
#include <QApplication>
#include <QIcon>
#include <QPushButton>
#include <QDesktopServices>
#include <QUrl>
#include <QTimer>

//Win32 includes
#include <Windows.h>

//Helper macros
#define LINK(URL) QString("<a href=\"%1\">%2</a>").arg(URL).arg(URL)

//Constants
const char *AboutDialog::neroAacUrl = "http://www.nero.com/eng/technologies-aac-codec.html";

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

AboutDialog::AboutDialog(QWidget *parent, bool firstStart)
	: QMessageBox(parent)
{
	QString aboutText;

	aboutText += "<h2>LameXP - Audio Encoder Front-end</h2>";
	aboutText += QString("<b>Copyright (C) 2004-%1 LoRd_MuldeR &lt;MuldeR2@GMX.de&gt;. Some rights reserved.</b><br>").arg(max(lamexp_version_date().year(),QDate::currentDate().year()));
	aboutText += QString().sprintf("<b>Version %d.%02d %s, Build %d [%s]</b><br><br>", lamexp_version_major(), lamexp_version_minor(), lamexp_version_release(), lamexp_version_build(), lamexp_version_date().toString(Qt::ISODate).toLatin1().constData());
	aboutText += "<nobr>Please visit the official web-site at ";
	aboutText += LINK("http://mulder.dummwiedeutsch.de/") += " for news and updates!</nobr><br>";
	aboutText += "<hr><br>";
	aboutText += "<nobr><tt>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.</tt></nobr><br>";
	aboutText += "<hr><br>";
	aboutText += "This software uses the 'slick' icon set by Mark James &ndash; <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>";
	
	setText(aboutText);
	setIconPixmap(dynamic_cast<QApplication*>(QApplication::instance())->windowIcon().pixmap(QSize(64,64)));
	setWindowTitle("About LameXP");
	
	if(firstStart)
	{
		QPushButton *firstButton = addButton("Show License Text", QMessageBox::AcceptRole);
		firstButton->setIcon(QIcon(":/icons/script_edit.png"));
		firstButton->setMinimumWidth(135);
		firstButton->disconnect();
		connect(firstButton, SIGNAL(clicked()), this, SLOT(openLicenseText()));

		QPushButton *secondButton = addButton("Accept License", QMessageBox::AcceptRole);
		secondButton->setIcon(QIcon(":/icons/accept.png"));
		secondButton->setMinimumWidth(120);

		QPushButton *thirdButton = addButton("Decline License", QMessageBox::AcceptRole);
		thirdButton->setIcon(QIcon(":/icons/delete.png"));
		thirdButton->setMinimumWidth(120);
		thirdButton->setEnabled(false);
	}
	else
	{
		QPushButton *firstButton = addButton("More About...", QMessageBox::AcceptRole);
		firstButton->setIcon(QIcon(":/icons/information.png"));
		firstButton->setMinimumWidth(120);
		firstButton->disconnect();
		connect(firstButton, SIGNAL(clicked()), this, SLOT(showMoreAbout()));

		QPushButton *secondButton = addButton("About Qt...", QMessageBox::AcceptRole);
		secondButton->setIcon(QIcon(":/images/Qt.svg"));
		secondButton->setMinimumWidth(120);
		secondButton->disconnect();
		connect(secondButton, SIGNAL(clicked()), this, SLOT(showAboutQt()));

		QPushButton *thirdButton = addButton("Discard", QMessageBox::AcceptRole);
		thirdButton->setIcon(QIcon(":/icons/cross.png"));
		thirdButton->setMinimumWidth(90);
	}

	m_firstShow = firstStart;
}

AboutDialog::~AboutDialog(void)
{
}

////////////////////////////////////////////////////////////
// Public Functions
////////////////////////////////////////////////////////////

int AboutDialog::exec()
{
	PlaySound(MAKEINTRESOURCE(IDR_WAVE_ABOUT), GetModuleHandle(NULL), SND_RESOURCE | SND_ASYNC);
	
	switch(QMessageBox::exec())
	{
	case 1:
		return 1;
		break;
	case 2:
		return -1;
		break;
	default:
		return 0;
		break;
	}
}

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

void AboutDialog::enableButtons(void)
{
	const QList<QAbstractButton*> buttonList = buttons();
	
	for(int i = 0; i < buttonList.count(); i++)
	{
		buttonList.at(i)->setEnabled(true);
	}

	setCursor(QCursor(Qt::ArrowCursor));
}

void AboutDialog::openLicenseText(void)
{
	QDesktopServices::openUrl(QUrl("http://www.gnu.org/licenses/gpl-2.0.txt"));
}

void AboutDialog::showAboutQt(void)
{
	QMessageBox::aboutQt(this);
}

void AboutDialog::showMoreAbout(void)
{
	QString moreAboutText;
	moreAboutText += "<h3>The following third-party software is used in LameXP:</h3>";
	moreAboutText += "<div  style=\"margin-left:-25px\"><ul>";
	moreAboutText += "<li><b>LAME - OpenSource mp3 Encoder</b><br>";
	moreAboutText += "Released under the terms of the GNU Leser General Public License.<br>";
	moreAboutText += LINK("http://lame.sourceforge.net/");
	moreAboutText += "<br>";
	moreAboutText += "<li><b>OggEnc - Ogg Vorbis Encoder</b>";
	moreAboutText += "<br>Completely open and patent-free audio encoding technology.<br>";
	moreAboutText += LINK("http://www.vorbis.com/");
	moreAboutText += "<br>";
	moreAboutText += "<li><b>Nero AAC reference MPEG-4 Encoder</b><br>";
	moreAboutText += "Freeware state-of-the-art HE-AAC encoder with 2-Pass support.<br>";
	moreAboutText += "(Available from vendor web-site as free download)<br>";
	moreAboutText += LINK(neroAacUrl);
	moreAboutText += "<br>";
	moreAboutText += "<li><b>MediaInfo - Media File Analysis Tool</b><br>";
	moreAboutText += "Released under the terms of the GNU Leser General Public License.<br>";
	moreAboutText += LINK("http://mediainfo.sourceforge.net/");
	moreAboutText += "<br></ul></div>";

	QMessageBox *moreAboutBox = new QMessageBox(this);
	moreAboutBox->setText(moreAboutText);
	moreAboutBox->setIconPixmap(dynamic_cast<QApplication*>(QApplication::instance())->windowIcon().pixmap(QSize(64,64)));

	QPushButton *closeButton = moreAboutBox->addButton("Discard", QMessageBox::AcceptRole);
	closeButton->setIcon(QIcon(":/icons/cross.png"));
	closeButton->setMinimumWidth(90);

	moreAboutBox->setWindowTitle("About Third-party Software");
	moreAboutBox->exec();
				
	LAMEXP_DELETE(moreAboutBox);
}

////////////////////////////////////////////////////////////
// Protected Functions
////////////////////////////////////////////////////////////

void AboutDialog::showEvent(QShowEvent *e)
{
	QDialog::showEvent(e);
	if(m_firstShow)
	{
		const QList<QAbstractButton*> buttonList = buttons();

		for(int i = 1; i < buttonList.count(); i++)
		{
			buttonList.at(i)->setEnabled(false);
		}

		QTimer::singleShot(5000, this, SLOT(enableButtons()));
		setCursor(QCursor(Qt::WaitCursor));
	}
}

////////////////////////////////////////////////////////////
// Private Functions
////////////////////////////////////////////////////////////