/********************************************************************
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 "x11client.h"
#include "cursor.h"
#include "input.h"
#include "internal_client.h"
#include "platform.h"
#include "screens.h"
#include "xdgshellclient.h"
#include "useractions.h"
#include "wayland_server.h"
#include "workspace.h"

#include <KWayland/Client/surface.h>
#include <KWayland/Server/seat_interface.h>

#include <KGlobalAccel>
#include <linux/input.h>

#include <netwm.h>
#include <xcb/xcb_icccm.h>

using namespace KWin;
using namespace KWayland::Client;

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

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

    void testConsumedShift();
    void testRepeatedTrigger();
    void testUserActionsMenu();
    void testMetaShiftW();
    void testComponseKey();
    void testX11ClientShortcut();
    void testWaylandClientShortcut();
    void testSetupWindowShortcut();
};

void GlobalShortcutsTest::initTestCase()
{
    qRegisterMetaType<KWin::AbstractClient *>();
    qRegisterMetaType<KWin::InternalClient *>();
    qRegisterMetaType<KWin::XdgShellClient *>();
    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
    QVERIFY(workspaceCreatedSpy.isValid());
    kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
    QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));

    kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
    qputenv("KWIN_XKB_DEFAULT_KEYMAP", "1");
    qputenv("XKB_DEFAULT_RULES", "evdev");

    kwinApp()->start();
    QVERIFY(workspaceCreatedSpy.wait());
    waylandServer()->initWorkspace();
}

void GlobalShortcutsTest::init()
{
    QVERIFY(Test::setupWaylandConnection());
    screens()->setCurrent(0);
    KWin::Cursor::setPos(QPoint(640, 512));
}

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

void GlobalShortcutsTest::testConsumedShift()
{
    // this test verifies that a shortcut with a consumed shift modifier triggers
    // create the action
    QScopedPointer<QAction> action(new QAction(nullptr));
    action->setProperty("componentName", QStringLiteral(KWIN_NAME));
    action->setObjectName(QStringLiteral("globalshortcuts-test-consumed-shift"));
    QSignalSpy triggeredSpy(action.data(), &QAction::triggered);
    QVERIFY(triggeredSpy.isValid());
    KGlobalAccel::self()->setShortcut(action.data(), QList<QKeySequence>{Qt::Key_Percent}, KGlobalAccel::NoAutoloading);
    input()->registerShortcut(Qt::Key_Percent, action.data());

    // press shift+5
    quint32 timestamp = 0;
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTSHIFT, timestamp++);
    QCOMPARE(input()->keyboardModifiers(), Qt::ShiftModifier);
    kwinApp()->platform()->keyboardKeyPressed(KEY_5, timestamp++);
    QTRY_COMPARE(triggeredSpy.count(), 1);
    kwinApp()->platform()->keyboardKeyReleased(KEY_5, timestamp++);

    // release shift
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTSHIFT, timestamp++);
}

void GlobalShortcutsTest::testRepeatedTrigger()
{
    // this test verifies that holding a key, triggers repeated global shortcut
    // in addition pressing another key should stop triggering the shortcut

    QScopedPointer<QAction> action(new QAction(nullptr));
    action->setProperty("componentName", QStringLiteral(KWIN_NAME));
    action->setObjectName(QStringLiteral("globalshortcuts-test-consumed-shift"));
    QSignalSpy triggeredSpy(action.data(), &QAction::triggered);
    QVERIFY(triggeredSpy.isValid());
    KGlobalAccel::self()->setShortcut(action.data(), QList<QKeySequence>{Qt::Key_Percent}, KGlobalAccel::NoAutoloading);
    input()->registerShortcut(Qt::Key_Percent, action.data());

    // we need to configure the key repeat first. It is only enabled on libinput
    waylandServer()->seat()->setKeyRepeatInfo(25, 300);

    // press shift+5
    quint32 timestamp = 0;
    kwinApp()->platform()->keyboardKeyPressed(KEY_WAKEUP, timestamp++);
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTSHIFT, timestamp++);
    QCOMPARE(input()->keyboardModifiers(), Qt::ShiftModifier);
    kwinApp()->platform()->keyboardKeyPressed(KEY_5, timestamp++);
    QTRY_COMPARE(triggeredSpy.count(), 1);
    // and should repeat
    QVERIFY(triggeredSpy.wait());
    QVERIFY(triggeredSpy.wait());
    // now release the key
    kwinApp()->platform()->keyboardKeyReleased(KEY_5, timestamp++);
    QVERIFY(!triggeredSpy.wait(500));

    kwinApp()->platform()->keyboardKeyReleased(KEY_WAKEUP, timestamp++);
    QVERIFY(!triggeredSpy.wait(500));

    // release shift
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTSHIFT, timestamp++);
}

void GlobalShortcutsTest::testUserActionsMenu()
{
    // this test tries to trigger the user actions menu with Alt+F3
    // the problem here is that pressing F3 consumes modifiers as it's part of the
    // Ctrl+alt+F3 keysym for vt switching. xkbcommon considers all modifiers as consumed
    // which a transformation to any keysym would cause
    // for more information see:
    // https://bugs.freedesktop.org/show_bug.cgi?id=92818
    // https://github.com/xkbcommon/libxkbcommon/issues/17

    // first create a window
    QScopedPointer<Surface> surface(Test::createSurface());
    QScopedPointer<XdgShellSurface> shellSurface(Test::createXdgShellStableSurface(surface.data()));
    auto c = Test::renderAndWaitForShown(surface.data(), QSize(100, 50), Qt::blue);
    QVERIFY(c);
    QVERIFY(c->isActive());

    quint32 timestamp = 0;
    QVERIFY(!workspace()->userActionsMenu()->isShown());
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTALT, timestamp++);
    kwinApp()->platform()->keyboardKeyPressed(KEY_F3, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_F3, timestamp++);
    QTRY_VERIFY(workspace()->userActionsMenu()->isShown());
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTALT, timestamp++);
}

void GlobalShortcutsTest::testMetaShiftW()
{
    // BUG 370341
    QScopedPointer<QAction> action(new QAction(nullptr));
    action->setProperty("componentName", QStringLiteral(KWIN_NAME));
    action->setObjectName(QStringLiteral("globalshortcuts-test-meta-shift-w"));
    QSignalSpy triggeredSpy(action.data(), &QAction::triggered);
    QVERIFY(triggeredSpy.isValid());
    KGlobalAccel::self()->setShortcut(action.data(), QList<QKeySequence>{Qt::META + Qt::SHIFT + Qt::Key_W}, KGlobalAccel::NoAutoloading);
    input()->registerShortcut(Qt::META + Qt::SHIFT + Qt::Key_W, action.data());

    // press meta+shift+w
    quint32 timestamp = 0;
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTMETA, timestamp++);
    QCOMPARE(input()->keyboardModifiers(), Qt::MetaModifier);
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTSHIFT, timestamp++);
    QCOMPARE(input()->keyboardModifiers(), Qt::ShiftModifier | Qt::MetaModifier);
    kwinApp()->platform()->keyboardKeyPressed(KEY_W, timestamp++);
    QTRY_COMPARE(triggeredSpy.count(), 1);
    kwinApp()->platform()->keyboardKeyReleased(KEY_W, timestamp++);

    // release meta+shift
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTSHIFT, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTMETA, timestamp++);
}

void GlobalShortcutsTest::testComponseKey()
{
    // BUG 390110
    QScopedPointer<QAction> action(new QAction(nullptr));
    action->setProperty("componentName", QStringLiteral(KWIN_NAME));
    action->setObjectName(QStringLiteral("globalshortcuts-accent"));
    QSignalSpy triggeredSpy(action.data(), &QAction::triggered);
    QVERIFY(triggeredSpy.isValid());
    KGlobalAccel::self()->setShortcut(action.data(), QList<QKeySequence>{Qt::UNICODE_ACCEL}, KGlobalAccel::NoAutoloading);
    input()->registerShortcut(Qt::UNICODE_ACCEL, action.data());

    // press & release `
    quint32 timestamp = 0;
    kwinApp()->platform()->keyboardKeyPressed(KEY_RESERVED, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_RESERVED, timestamp++);

    QTRY_COMPARE(triggeredSpy.count(), 0);
}

struct XcbConnectionDeleter
{
    static inline void cleanup(xcb_connection_t *pointer)
    {
        xcb_disconnect(pointer);
    }
};

void GlobalShortcutsTest::testX11ClientShortcut()
{
    // create an X11 window
    QScopedPointer<xcb_connection_t, XcbConnectionDeleter> c(xcb_connect(nullptr, nullptr));
    QVERIFY(!xcb_connection_has_error(c.data()));
    xcb_window_t w = xcb_generate_id(c.data());
    const QRect windowGeometry = QRect(0, 0, 10, 20);
    const uint32_t values[] = {
        XCB_EVENT_MASK_ENTER_WINDOW |
        XCB_EVENT_MASK_LEAVE_WINDOW
    };
    xcb_create_window(c.data(), XCB_COPY_FROM_PARENT, w, rootWindow(),
                      windowGeometry.x(),
                      windowGeometry.y(),
                      windowGeometry.width(),
                      windowGeometry.height(),
                      0, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_COPY_FROM_PARENT, XCB_CW_EVENT_MASK, values);
    xcb_size_hints_t hints;
    memset(&hints, 0, sizeof(hints));
    xcb_icccm_size_hints_set_position(&hints, 1, windowGeometry.x(), windowGeometry.y());
    xcb_icccm_size_hints_set_size(&hints, 1, windowGeometry.width(), windowGeometry.height());
    xcb_icccm_set_wm_normal_hints(c.data(), w, &hints);
    NETWinInfo info(c.data(), w, rootWindow(), NET::WMAllProperties, NET::WM2AllProperties);
    info.setWindowType(NET::Normal);
    xcb_map_window(c.data(), w);
    xcb_flush(c.data());

    QSignalSpy windowCreatedSpy(workspace(), &Workspace::clientAdded);
    QVERIFY(windowCreatedSpy.isValid());
    QVERIFY(windowCreatedSpy.wait());
    X11Client *client = windowCreatedSpy.last().first().value<X11Client *>();
    QVERIFY(client);

    QCOMPARE(workspace()->activeClient(), client);
    QVERIFY(client->isActive());
    QCOMPARE(client->shortcut(), QKeySequence());
    const QKeySequence seq(Qt::META + Qt::SHIFT + Qt::Key_Y);
    QVERIFY(workspace()->shortcutAvailable(seq));
    client->setShortcut(seq.toString());
    QCOMPARE(client->shortcut(), seq);
    QVERIFY(!workspace()->shortcutAvailable(seq));
    QCOMPARE(client->caption(), QStringLiteral(" {Meta+Shift+Y}"));

    // it's delayed
    QCoreApplication::processEvents();

    workspace()->activateClient(nullptr);
    QVERIFY(!workspace()->activeClient());
    QVERIFY(!client->isActive());

    // now let's trigger the shortcut
    quint32 timestamp = 0;
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTMETA, timestamp++);
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTSHIFT, timestamp++);
    kwinApp()->platform()->keyboardKeyPressed(KEY_Y, timestamp++);
    QTRY_COMPARE(workspace()->activeClient(), client);
    kwinApp()->platform()->keyboardKeyReleased(KEY_Y, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTSHIFT, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTMETA, timestamp++);

    // destroy window again
    QSignalSpy windowClosedSpy(client, &X11Client::windowClosed);
    QVERIFY(windowClosedSpy.isValid());
    xcb_unmap_window(c.data(), w);
    xcb_destroy_window(c.data(), w);
    xcb_flush(c.data());
    QVERIFY(windowClosedSpy.wait());
}

void GlobalShortcutsTest::testWaylandClientShortcut()
{
    QScopedPointer<Surface> surface(Test::createSurface());
    QScopedPointer<XdgShellSurface> shellSurface(Test::createXdgShellStableSurface(surface.data()));
    auto client = Test::renderAndWaitForShown(surface.data(), QSize(100, 50), Qt::blue);

    QCOMPARE(workspace()->activeClient(), client);
    QVERIFY(client->isActive());
    QCOMPARE(client->shortcut(), QKeySequence());
    const QKeySequence seq(Qt::META + Qt::SHIFT + Qt::Key_Y);
    QVERIFY(workspace()->shortcutAvailable(seq));
    client->setShortcut(seq.toString());
    QCOMPARE(client->shortcut(), seq);
    QVERIFY(!workspace()->shortcutAvailable(seq));
    QCOMPARE(client->caption(), QStringLiteral(" {Meta+Shift+Y}"));

    workspace()->activateClient(nullptr);
    QVERIFY(!workspace()->activeClient());
    QVERIFY(!client->isActive());

    // now let's trigger the shortcut
    quint32 timestamp = 0;
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTMETA, timestamp++);
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTSHIFT, timestamp++);
    kwinApp()->platform()->keyboardKeyPressed(KEY_Y, timestamp++);
    QTRY_COMPARE(workspace()->activeClient(), client);
    kwinApp()->platform()->keyboardKeyReleased(KEY_Y, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTSHIFT, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTMETA, timestamp++);

    shellSurface.reset();
    surface.reset();
    QVERIFY(Test::waitForWindowDestroyed(client));
    QVERIFY(workspace()->shortcutAvailable(seq));
}

void GlobalShortcutsTest::testSetupWindowShortcut()
{
    QScopedPointer<Surface> surface(Test::createSurface());
    QScopedPointer<XdgShellSurface> shellSurface(Test::createXdgShellStableSurface(surface.data()));
    auto client = Test::renderAndWaitForShown(surface.data(), QSize(100, 50), Qt::blue);

    QCOMPARE(workspace()->activeClient(), client);
    QVERIFY(client->isActive());
    QCOMPARE(client->shortcut(), QKeySequence());

    QSignalSpy shortcutDialogAddedSpy(workspace(), &Workspace::internalClientAdded);
    QVERIFY(shortcutDialogAddedSpy.isValid());
    workspace()->slotSetupWindowShortcut();
    QTRY_COMPARE(shortcutDialogAddedSpy.count(), 1);
    auto dialog = shortcutDialogAddedSpy.first().first().value<InternalClient *>();
    QVERIFY(dialog);
    QVERIFY(dialog->isInternal());
    auto sequenceEdit = workspace()->shortcutDialog()->findChild<QKeySequenceEdit*>();
    QVERIFY(sequenceEdit);

    // the QKeySequenceEdit field does not get focus, we need to pass it focus manually
    QEXPECT_FAIL("", "Edit does not have focus", Continue);
    QVERIFY(sequenceEdit->hasFocus());
    sequenceEdit->setFocus();
    QTRY_VERIFY(sequenceEdit->hasFocus());

    quint32 timestamp = 0;
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTMETA, timestamp++);
    kwinApp()->platform()->keyboardKeyPressed(KEY_LEFTSHIFT, timestamp++);
    kwinApp()->platform()->keyboardKeyPressed(KEY_Y, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_Y, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTSHIFT, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_LEFTMETA, timestamp++);

    // the sequence gets accepted after one second, so wait a bit longer
    QTest::qWait(2000);
    // now send in enter
    kwinApp()->platform()->keyboardKeyPressed(KEY_ENTER, timestamp++);
    kwinApp()->platform()->keyboardKeyReleased(KEY_ENTER, timestamp++);
    QTRY_COMPARE(client->shortcut(), QKeySequence(Qt::META + Qt::SHIFT + Qt::Key_Y));
}

WAYLANDTEST_MAIN(GlobalShortcutsTest)
#include "globalshortcuts_test.moc"
