/* Copyright (C) 2014-2019 The KPhotoAlbum Development Team

   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; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "ConnectionIndicator.h"

#include "RemoteInterface.h"

#include <MainWindow/Options.h>
#include <Settings/SettingsData.h>

#include <KLocalizedString>
#include <QDialog>
#include <QHBoxLayout>
#include <QHostAddress>
#include <QIcon>
#include <QLabel>
#include <QLineEdit>
#include <QTimer>
#include <QValidator>

namespace RemoteControl
{

ConnectionIndicator::ConnectionIndicator(QWidget *parent)
    : QLabel(parent)
    , m_state(Off)
{
    setToolTip(i18n("This icon indicates if KPhotoAlbum is connected to an android device.\n"
                    "Click on the icon to toggle listening for clients in the local area network.\n"
                    "If the local area network doesn't allow broadcast packages between the android client "
                    "and KPhotoAlbum, then right click on the icon and specify the android device's address.\n"
                    "The android client can be downloaded from google play."));

    connect(&RemoteInterface::instance(), SIGNAL(connected()), this, SLOT(on()));
    connect(&RemoteInterface::instance(), SIGNAL(disConnected()), this, SLOT(wait()));
    connect(&RemoteInterface::instance(), SIGNAL(listening()), this, SLOT(wait()));
    connect(&RemoteInterface::instance(), SIGNAL(stoppedListening()), this, SLOT(off()));

    m_timer = new QTimer(this);
    connect(m_timer, &QTimer::timeout, this, &ConnectionIndicator::waitingAnimation);

    off();
}

void ConnectionIndicator::mouseReleaseEvent(QMouseEvent *)
{
    if (m_state == Off) {
        QHostAddress bindTo = MainWindow::Options::the()->listen();
        if (bindTo.isNull())
            bindTo = QHostAddress::Any;
        RemoteInterface::instance().listen(bindTo);

        wait();
    } else {
        RemoteInterface::instance().stopListening();
        m_state = Off;
        m_timer->stop();
        off();
    }
}

namespace
{
    class IPValidator : public QValidator
    {
    protected:
        State validate(QString &input, int &) const override
        {
            for (int pos = 0; pos < 15; pos += 4) {
                bool ok1;
                int i = input.mid(pos, 1).toInt(&ok1);
                bool ok2;
                int j = input.mid(pos + 1, 1).toInt(&ok2);
                bool ok3;
                int k = input.mid(pos + 2, 1).toInt(&ok3);

                if ((ok1 && i > 2) || (ok1 && ok2 && i == 2 && j > 5) || (ok1 && ok2 && ok3 && i * 100 + j * 10 + k > 255))
                    return Invalid;
            }
            return Acceptable;
        }
    };
} //namespace

void ConnectionIndicator::contextMenuEvent(QContextMenuEvent *)
{
    QDialog dialog;
    QLabel label(i18n("Android device address: "), &dialog);
    QLineEdit edit(&dialog);
    edit.setInputMask(QString::fromUtf8("000.000.000.000;_"));
    edit.setText(Settings::SettingsData::instance()->recentAndroidAddress());
    IPValidator validator;
    edit.setValidator(&validator);

    QHBoxLayout layout(&dialog);
    layout.addWidget(&label);
    layout.addWidget(&edit);

    connect(&edit, &QLineEdit::returnPressed, &dialog, &QDialog::accept);
    int code = dialog.exec();

    if (code == QDialog::Accepted) {
        RemoteInterface::instance().connectTo(QHostAddress(edit.text()));
        wait();
        Settings::SettingsData::instance()->setRecentAndroidAddress(edit.text());
    }
}

void ConnectionIndicator::on()
{
    m_state = On;
    m_timer->stop();
    QIcon icon { QIcon::fromTheme(QString::fromUtf8("network-wireless")) };
    setPixmap(icon.pixmap(32, 32));
}

void ConnectionIndicator::off()
{
    m_timer->stop();
    m_state = Off;
    QIcon icon { QIcon::fromTheme(QString::fromUtf8("network-disconnect")) };
    setPixmap(icon.pixmap(32, 32));
}

void ConnectionIndicator::wait()
{
    m_timer->start(300);
    m_state = Connecting;
}

void ConnectionIndicator::waitingAnimation()
{
    static int index = 0;
    static QList<QPixmap> icons;
    if (icons.isEmpty()) {
        icons.append(QIcon::fromTheme(QString::fromUtf8("network-wireless-disconnected")).pixmap(32, 32));
        icons.append(QIcon::fromTheme(QString::fromUtf8("network-wireless-connected-25")).pixmap(32, 32));
        icons.append(QIcon::fromTheme(QString::fromUtf8("network-wireless-connected-50")).pixmap(32, 32));
        icons.append(QIcon::fromTheme(QString::fromUtf8("network-wireless-connected-75")).pixmap(32, 32));
        icons.append(QIcon::fromTheme(QString::fromUtf8("network-wireless")).pixmap(32, 32));
    }
    index = (index + 1) % icons.count();
    setPixmap(icons[index]);
}

} // namespace RemoteControl
