/********************************************************************
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 "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/event_queue.h>
#include <KWayland/Client/plasmashell.h>
#include <KWayland/Client/registry.h>
#include <KWayland/Client/shm_pool.h>
#include <KWayland/Client/shell.h>
#include <KWayland/Client/surface.h>

using namespace KWin;
using namespace KWayland::Client;

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

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

    void testRoleOnAllDesktops_data();
    void testRoleOnAllDesktops();
    void testAcceptsFocus_data();
    void testAcceptsFocus();

    void testDesktopIsOpaque();
    void testOSDPlacement();

private:
    ConnectionThread *m_connection = nullptr;
    KWayland::Client::Compositor *m_compositor = nullptr;
    Shell *m_shell = nullptr;
    PlasmaShell *m_plasmaShell = nullptr;
};

void PlasmaSurfaceTest::initTestCase()
{
    qRegisterMetaType<KWin::ShellClient*>();
    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
    QVERIFY(workspaceCreatedSpy.isValid());
    kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
    QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
    kwinApp()->start();
    QVERIFY(workspaceCreatedSpy.wait());
}

void PlasmaSurfaceTest::init()
{
    QVERIFY(Test::setupWaylandConnection(s_socketName, Test::AdditionalWaylandInterface::PlasmaShell));
    m_compositor = Test::waylandCompositor();
    m_shell = Test::waylandShell();
    m_plasmaShell = Test::waylandPlasmaShell();
}

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

void PlasmaSurfaceTest::testRoleOnAllDesktops_data()
{
    QTest::addColumn<PlasmaShellSurface::Role>("role");
    QTest::addColumn<bool>("expectedOnAllDesktops");

    QTest::newRow("Desktop") << PlasmaShellSurface::Role::Desktop << true;
    QTest::newRow("Panel") << PlasmaShellSurface::Role::Panel << true;
    QTest::newRow("OSD") << PlasmaShellSurface::Role::OnScreenDisplay << true;
    QTest::newRow("Normal") << PlasmaShellSurface::Role::Normal << false;
    QTest::newRow("Notification") << PlasmaShellSurface::Role::Notification << true;
    QTest::newRow("ToolTip") << PlasmaShellSurface::Role::ToolTip << true;
}

void PlasmaSurfaceTest::testRoleOnAllDesktops()
{
    // this test verifies that a ShellClient is set on all desktops when the role changes
    QScopedPointer<Surface> surface(Test::createSurface());
    QVERIFY(!surface.isNull());
    QScopedPointer<ShellSurface> shellSurface(Test::createShellSurface(surface.data()));
    QVERIFY(!shellSurface.isNull());
    QScopedPointer<PlasmaShellSurface> plasmaSurface(m_plasmaShell->createSurface(surface.data()));
    QVERIFY(!plasmaSurface.isNull());

    // now render to map the window
    AbstractClient *c = Test::renderAndWaitForShown(surface.data(), QSize(100, 50), Qt::blue);
    QVERIFY(c);
    QCOMPARE(workspace()->activeClient(), c);

    // currently the role is not yet set, so the window should not be on all desktops
    QCOMPARE(c->isOnAllDesktops(), false);

    // now let's try to change that
    QSignalSpy onAllDesktopsSpy(c, &AbstractClient::desktopChanged);
    QVERIFY(onAllDesktopsSpy.isValid());
    QFETCH(PlasmaShellSurface::Role, role);
    plasmaSurface->setRole(role);
    QFETCH(bool, expectedOnAllDesktops);
    QCOMPARE(onAllDesktopsSpy.wait(), expectedOnAllDesktops);
    QCOMPARE(c->isOnAllDesktops(), expectedOnAllDesktops);

    // let's create a second window where we init a little bit different
    // first creating the PlasmaSurface then the Shell Surface
    QScopedPointer<Surface> surface2(Test::createSurface());
    QVERIFY(!surface2.isNull());
    QScopedPointer<PlasmaShellSurface> plasmaSurface2(m_plasmaShell->createSurface(surface2.data()));
    QVERIFY(!plasmaSurface2.isNull());
    plasmaSurface2->setRole(role);
    QScopedPointer<ShellSurface> shellSurface2(Test::createShellSurface(surface2.data()));
    QVERIFY(!shellSurface2.isNull());
    Test::render(surface2.data(), QSize(100, 50), Qt::blue);
    QVERIFY(Test::waitForWaylandWindowShown());

    QVERIFY(workspace()->activeClient() != c);
    c = workspace()->activeClient();
    QEXPECT_FAIL("Desktop", "PS before WS not supported", Continue);
    QEXPECT_FAIL("Panel", "PS before WS not supported", Continue);
    QEXPECT_FAIL("OSD", "PS before WS not supported", Continue);
    QEXPECT_FAIL("Notification", "PS before WS not supported", Continue);
    QEXPECT_FAIL("ToolTip", "PS before WS not supported", Continue);
    QCOMPARE(c->isOnAllDesktops(), expectedOnAllDesktops);
}

void PlasmaSurfaceTest::testAcceptsFocus_data()
{
    QTest::addColumn<PlasmaShellSurface::Role>("role");
    QTest::addColumn<bool>("wantsInput");
    QTest::addColumn<bool>("active");

    QTest::newRow("Desktop") << PlasmaShellSurface::Role::Desktop << true << true;
    QTest::newRow("Panel") << PlasmaShellSurface::Role::Panel << true << false;
    QTest::newRow("OSD") << PlasmaShellSurface::Role::OnScreenDisplay << false << false;
    QTest::newRow("Normal") << PlasmaShellSurface::Role::Normal << true << true;
    QTest::newRow("Notification") << PlasmaShellSurface::Role::Notification << false << false;
    QTest::newRow("ToolTip") << PlasmaShellSurface::Role::ToolTip << false << false;
}

void PlasmaSurfaceTest::testAcceptsFocus()
{
    // this test verifies that some surface roles don't get focus
    QScopedPointer<Surface> surface(Test::createSurface());
    QVERIFY(!surface.isNull());
    QScopedPointer<ShellSurface> shellSurface(Test::createShellSurface(surface.data()));
    QVERIFY(!shellSurface.isNull());
    QScopedPointer<PlasmaShellSurface> plasmaSurface(m_plasmaShell->createSurface(surface.data()));
    QVERIFY(!plasmaSurface.isNull());
    QFETCH(PlasmaShellSurface::Role, role);
    plasmaSurface->setRole(role);

    // now render to map the window
    auto c = Test::renderAndWaitForShown(surface.data(), QSize(100, 50), Qt::blue);

    QVERIFY(c);
    QTEST(c->wantsInput(), "wantsInput");
    QTEST(c->isActive(), "active");
}

void PlasmaSurfaceTest::testDesktopIsOpaque()
{
    QScopedPointer<Surface> surface(Test::createSurface());
    QVERIFY(!surface.isNull());
    QScopedPointer<ShellSurface> shellSurface(Test::createShellSurface(surface.data()));
    QVERIFY(!shellSurface.isNull());
    QScopedPointer<PlasmaShellSurface> plasmaSurface(m_plasmaShell->createSurface(surface.data()));
    QVERIFY(!plasmaSurface.isNull());
    plasmaSurface->setRole(PlasmaShellSurface::Role::Desktop);

    // now render to map the window
    auto c = Test::renderAndWaitForShown(surface.data(), QSize(100, 50), Qt::blue);

    QVERIFY(c);
    QCOMPARE(c->windowType(), NET::Desktop);
    QVERIFY(c->isDesktop());

    QVERIFY(!c->hasAlpha());
    QCOMPARE(c->depth(), 24);
}

void PlasmaSurfaceTest::testOSDPlacement()
{
    QScopedPointer<Surface> surface(Test::createSurface());
    QVERIFY(!surface.isNull());
    QScopedPointer<ShellSurface> shellSurface(Test::createShellSurface(surface.data()));
    QVERIFY(!shellSurface.isNull());
    QScopedPointer<PlasmaShellSurface> plasmaSurface(m_plasmaShell->createSurface(surface.data()));
    QVERIFY(!plasmaSurface.isNull());
    plasmaSurface->setRole(PlasmaShellSurface::Role::OnScreenDisplay);

    // now render and map the window
    auto c = Test::renderAndWaitForShown(surface.data(), QSize(100, 50), Qt::blue);

    QVERIFY(c);
    QCOMPARE(c->windowType(), NET::OnScreenDisplay);
    QVERIFY(c->isOnScreenDisplay());
    QCOMPARE(c->geometry(), QRect(590, 649, 100, 50));

    // change the screen size
    QSignalSpy screensChangedSpy(screens(), &Screens::changed);
    QVERIFY(screensChangedSpy.isValid());
    const QVector<QRect> geometries{QRect(0, 0, 1280, 1024), QRect(1280, 0, 1280, 1024)};
    QMetaObject::invokeMethod(kwinApp()->platform(), "outputGeometriesChanged",
                              Qt::DirectConnection,
                              Q_ARG(QVector<QRect>, geometries));
    QVERIFY(screensChangedSpy.wait());
    QCOMPARE(screensChangedSpy.count(), 1);
    QCOMPARE(screens()->count(), 2);
    QCOMPARE(screens()->geometry(0), geometries.at(0));
    QCOMPARE(screens()->geometry(1), geometries.at(1));

    QCOMPARE(c->geometry(), QRect(590, 649, 100, 50));
}

WAYLANDTEST_MAIN(PlasmaSurfaceTest)
#include "plasma_surface_test.moc"