// Copyright 2016-2021 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.

#include "About.h"
#include "License.h"
#include "Utils.h"
#include "Version.h"

#include <QtWidgets/QApplication>
#include <QtWidgets/QLabel>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QTabWidget>
#include <QtWidgets/QTextBrowser>
#include <QtWidgets/QTextEdit>
#include <QtWidgets/QVBoxLayout>

AboutDialog::AboutDialog(QWidget *p, AboutDialogOptions options) : QDialog(p) {
	setWindowTitle(tr("About Murmur"));
	setMinimumSize(QSize(400, 300));

	QTabWidget *qtwTab   = new QTabWidget(this);
	QVBoxLayout *vblMain = new QVBoxLayout(this);

	QTextEdit *qteLicense = new QTextEdit(qtwTab);
	qteLicense->setReadOnly(true);
	qteLicense->setPlainText(License::license());

	QTextEdit *qteAuthors = new QTextEdit(qtwTab);
	qteAuthors->setReadOnly(true);
	qteAuthors->setPlainText(License::authors());

	QTextBrowser *qtb3rdPartyLicense = new QTextBrowser(qtwTab);
	qtb3rdPartyLicense->setReadOnly(true);
	qtb3rdPartyLicense->setOpenExternalLinks(true);

	QList< LicenseInfo > thirdPartyLicenses = License::thirdPartyLicenses();
	foreach (LicenseInfo li, thirdPartyLicenses) {
		qtb3rdPartyLicense->append(QString::fromLatin1("<h3>%1 (<a href=\"%2\">%2</a>)</h3><pre>%3</pre>")
									   .arg(li.name.toHtmlEscaped())
									   .arg(li.url.toHtmlEscaped())
									   .arg(li.license.toHtmlEscaped()));
	}

	qtb3rdPartyLicense->moveCursor(QTextCursor::Start);

	QWidget *about = new QWidget(qtwTab);

	QLabel *icon     = new QLabel(about);
	QIcon windowIcon = QApplication::windowIcon();
	icon->setPixmap(windowIcon.pixmap(windowIcon.actualSize(QSize(128, 128))));

	QLabel *text = new QLabel(about);
	text->setOpenExternalLinks(true);
	text->setText(tr("<h3>Murmur (%1)</h3>"
					 "<p>%3</p>"
					 "<p><tt><a href=\"%2\">%2</a></tt></p>")
					  .arg(QLatin1String(MUMBLE_RELEASE))
					  .arg(QLatin1String("http://www.mumble.info/"))
					  .arg(QLatin1String("Copyright 2005-2020 The Mumble Developers")));
	QHBoxLayout *qhbl = new QHBoxLayout(about);
	qhbl->addWidget(icon);
	qhbl->addWidget(text);

	qtwTab->addTab(about, tr("&About Murmur"));
	qtwTab->addTab(qteLicense, tr("&License"));
	qtwTab->addTab(qteAuthors, tr("A&uthors"));
	qtwTab->addTab(qtb3rdPartyLicense, tr("&Third-Party Licenses"));

	if (options == AboutDialogOptionsShowAbout) {
		qtwTab->setCurrentWidget(about);
	} else if (options == AboutDialogOptionsShowLicense) {
		qtwTab->setCurrentWidget(qteLicense);
	} else if (options == AboutDialogOptionsShowAuthors) {
		qtwTab->setCurrentWidget(qteAuthors);
	} else if (options == AboutDialogOptionsShowThirdPartyLicenses) {
		qtwTab->setCurrentWidget(qtb3rdPartyLicense);
	}

	QPushButton *okButton = new QPushButton(tr("OK"), this);
	connect(okButton, SIGNAL(clicked()), this, SLOT(accept()));

	vblMain->addWidget(qtwTab);
	vblMain->addWidget(okButton);
}