/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.

Copyright (C) 2016 Martin Gräßlin <mgraesslin@kde.org>

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, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "kwin_wayland_test.h"
#include "cursor.h"
#include "platform.h"
#include "shell_client.h"
#include "screens.h"
#include "wayland_server.h"
#include "workspace.h"

#include <KWayland/Client/connection_thread.h>
#include <KWayland/Client/compositor.h>
#include <KWayland/Client/shell.h>
#include <KWayland/Client/surface.h>

#include <KWayland/Server/shell_interface.h>

using namespace KWin;
using namespace KWayland::Client;

static const QString s_socketName = QStringLiteral("wayland_test_kwin_shell_client-0");

class TestShellClient : public QObject
{
    Q_OBJECT
private Q_SLOTS:
    void initTestCase();
    void init();
    void cleanup();

    void testMapUnmapMap();
};

void TestShellClient::initTestCase()
{
    qRegisterMetaType<KWin::ShellClient*>();
    qRegisterMetaType<KWin::AbstractClient*>();
    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
    QVERIFY(workspaceCreatedSpy.isValid());
    kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
    QMetaObject::invokeMethod(kwinApp()->platform(), "setOutputCount", Qt::DirectConnection, Q_ARG(int, 2));
    waylandServer()->init(s_socketName.toLocal8Bit());

    kwinApp()->start();
    QVERIFY(workspaceCreatedSpy.wait());
    QCOMPARE(screens()->count(), 2);
    QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
    QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
    waylandServer()->initWorkspace();
}

void TestShellClient::init()
{
    QVERIFY(Test::setupWaylandConnection(s_socketName));

    screens()->setCurrent(0);
    KWin::Cursor::setPos(QPoint(1280, 512));
}

void TestShellClient::cleanup()
{
    Test::destroyWaylandConnection();
}

void TestShellClient::testMapUnmapMap()
{
    // this test verifies that mapping a previously mapped window works correctly
    QSignalSpy clientAddedSpy(waylandServer(), &WaylandServer::shellClientAdded);
    QVERIFY(clientAddedSpy.isValid());

    QScopedPointer<Surface> surface(Test::createSurface());
    QScopedPointer<ShellSurface> shellSurface(Test::createShellSurface(surface.data()));

    // now let's render
    Test::render(surface.data(), QSize(100, 50), Qt::blue);

    QVERIFY(clientAddedSpy.isEmpty());
    QVERIFY(clientAddedSpy.wait());
    auto client = clientAddedSpy.first().first().value<ShellClient*>();
    QVERIFY(client);
    QVERIFY(client->isShown(true));
    QCOMPARE(workspace()->activeClient(), client);

    // now unmap
    QSignalSpy hiddenSpy(client, &ShellClient::windowHidden);
    QVERIFY(hiddenSpy.isValid());
    QSignalSpy windowClosedSpy(client, &ShellClient::windowClosed);
    QVERIFY(windowClosedSpy.isValid());
    surface->attachBuffer(Buffer::Ptr());
    surface->commit(Surface::CommitFlag::None);
    QVERIFY(hiddenSpy.wait());
    QVERIFY(windowClosedSpy.isEmpty());
    QVERIFY(!workspace()->activeClient());

    QSignalSpy windowShownSpy(client, &ShellClient::windowShown);
    QVERIFY(windowShownSpy.isValid());
    Test::render(surface.data(), QSize(100, 50), Qt::blue);
    QCOMPARE(clientAddedSpy.count(), 1);
    QVERIFY(windowShownSpy.wait());
    QCOMPARE(windowShownSpy.count(), 1);
    QCOMPARE(clientAddedSpy.count(), 1);
    QCOMPARE(workspace()->activeClient(), client);

    // let's unmap again
    surface->attachBuffer(Buffer::Ptr());
    surface->commit(Surface::CommitFlag::None);
    QVERIFY(hiddenSpy.wait());
    QCOMPARE(hiddenSpy.count(), 2);
    QVERIFY(windowClosedSpy.isEmpty());

    shellSurface.reset();
    surface.reset();
    QVERIFY(windowClosedSpy.wait());
    QCOMPARE(windowClosedSpy.count(), 1);
}

WAYLANDTEST_MAIN(TestShellClient)
#include "shell_client_test.moc"