/* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
 * Software engineering by Intevation GmbH
 *
 * This file is Free Software under the GNU GPL (v>=2)
 * and comes with ABSOLUTELY NO WARRANTY!
 * See LICENSE.txt for details.
 */
#include "aboutdialog.h"
#include <QApplication>
#include <QDebug>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QPushButton>
#include <QLabel>

AboutDialog::AboutDialog(QMainWindow *parent) :
    QDialog(parent)
{
    setWindowTitle("About TrustBridge");
    setupGUI();
}

void AboutDialog::setupGUI()
{
    QVBoxLayout *mainLayout = new QVBoxLayout(this);
    QHBoxLayout *headerLayout = new QHBoxLayout;
    QVBoxLayout *headerTextLayout = new QVBoxLayout;
    QVBoxLayout *centerLayout = new QVBoxLayout;
    QHBoxLayout *bottomLayout = new QHBoxLayout;

    QImage *logoImage = new QImage(":/img/logo.png");
    QLabel *logo = new QLabel;
    logo->setBackgroundRole(QPalette::Base);
    logo->setPixmap(QPixmap::fromImage(*logoImage));
    QLabel *title = new QLabel("<h2>" + tr("TrustBridge") + "</h2>");
    QString version = tr("Version: ");
    version.append(QApplication::applicationVersion());
    QLabel *appVersion = new QLabel(version);
    appVersion->setTextInteractionFlags(
        Qt::TextSelectableByMouse |
        Qt::TextSelectableByKeyboard);

    QFrame *headerSeparator = new QFrame();
    headerSeparator->setFrameShape(QFrame::HLine);
    headerSeparator->setFrameShadow(QFrame::Sunken);

    headerTextLayout->addWidget(title);
    headerTextLayout->addWidget(appVersion);
    headerLayout->addWidget(logo);
    headerLayout->addLayout(headerTextLayout);
    headerLayout->insertStretch(2, 10);

    QLabel *textDesc = new QLabel(tr("TrustBridge is a root certificate"
        " installer for Windows and Linux."));
    textDesc->setTextInteractionFlags(
        Qt::TextSelectableByMouse |
        Qt::TextSelectableByKeyboard);
    QLabel *textManage = new QLabel(tr("The root certificate lists are managed"
        " by the German <a href=\"https://www.bsi.bund.de\">"
        "Federal Office for Information Security (BSI)</a>.\n\n"));
    textManage->setTextInteractionFlags(
        Qt::TextBrowserInteraction |
        Qt::TextSelectableByKeyboard);
    QLabel *textDevel = new QLabel(tr("The software was developed by the companies"
        " <a href=\"http://www.intevation.de\">Intevation GmbH</a> and "
        " <a href=\"http://www.dn-systems.de\">DN-Systems GmbH</a>, <br>"
        " contracted by the German Federal Office for Information Security (BSI).\n\n"));
    textDevel->setTextInteractionFlags(
        Qt::TextBrowserInteraction |
        Qt::TextSelectableByKeyboard);
    QLabel *textLicense = new QLabel(tr("TrustBridge is Free Software licensed"
        " under GNU GPL v2+.\n\nCopyright (C) 2014 by Bundesamt für Sicherheit"
        " in der Informationstechnik"));
    textLicense->setTextInteractionFlags(
        Qt::TextSelectableByMouse |
        Qt::TextSelectableByKeyboard);

    centerLayout->addWidget(headerSeparator);
    centerLayout->addWidget(textDesc);
    centerLayout->addWidget(textManage);
    centerLayout->addWidget(textDevel);
    centerLayout->addWidget(textLicense);
    centerLayout->insertSpacing(2, 10);
    centerLayout->insertSpacing(4, 10);
    centerLayout->insertSpacing(6, 10);
    centerLayout->insertStretch(8, 10);

    QPushButton *closeButton = new QPushButton(tr("Close"));
    connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
    bottomLayout->insertStretch(0, 10);
    bottomLayout->addWidget(closeButton);

    QFrame *bottomSeparator = new QFrame();
    bottomSeparator->setFrameShape(QFrame::HLine);
    bottomSeparator->setFrameShadow(QFrame::Sunken);
    mainLayout->addLayout(headerLayout);
    mainLayout->addLayout(centerLayout);
    mainLayout->addWidget(bottomSeparator);
    mainLayout->addLayout(bottomLayout);
}