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

    SPDX-FileCopyrightText: 2016 Martin Gräßlin <mgraesslin@kde.org>

    SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "kwin_wayland_test.h"

#include "cursor.h"
#include "output.h"
#include "platform.h"
#include "wayland_server.h"
#include "workspace.h"
#include "x11window.h"
#include <kwineffects.h>

#include <KDecoration2/Decoration>

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

namespace KWin
{

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

class ShadeTest : public QObject
{
    Q_OBJECT
private Q_SLOTS:
    void initTestCase();
    void init();
    void testShadeGeometry();
};

void ShadeTest::initTestCase()
{
    qRegisterMetaType<KWin::Window *>();
    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
    QVERIFY(applicationStartedSpy.isValid());
    kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
    QVERIFY(waylandServer()->init(s_socketName));
    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));

    kwinApp()->start();
    QVERIFY(applicationStartedSpy.wait());
    const auto outputs = workspace()->outputs();
    QCOMPARE(outputs.count(), 2);
    QCOMPARE(outputs[0]->geometry(), QRect(0, 0, 1280, 1024));
    QCOMPARE(outputs[1]->geometry(), QRect(1280, 0, 1280, 1024));
    setenv("QT_QPA_PLATFORM", "wayland", true);
    Test::initWaylandWorkspace();
}

void ShadeTest::init()
{
    workspace()->setActiveOutput(QPoint(640, 512));
    Cursors::self()->mouse()->setPos(QPoint(640, 512));
}

void ShadeTest::testShadeGeometry()
{
    // this test verifies that the geometry is properly restored after shading
    // see BUG: 362501
    // create an xcb window
    struct XcbConnectionDeleter
    {
        void operator()(xcb_connection_t *pointer)
        {
            xcb_disconnect(pointer);
        }
    };
    std::unique_ptr<xcb_connection_t, XcbConnectionDeleter> c(xcb_connect(nullptr, nullptr));
    QVERIFY(!xcb_connection_has_error(c.get()));
    const QRect windowGeometry(0, 0, 100, 200);
    xcb_window_t windowId = xcb_generate_id(c.get());
    xcb_create_window(c.get(), XCB_COPY_FROM_PARENT, windowId, rootWindow(),
                      windowGeometry.x(),
                      windowGeometry.y(),
                      windowGeometry.width(),
                      windowGeometry.height(),
                      0, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_COPY_FROM_PARENT, 0, nullptr);
    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.get(), windowId, &hints);
    xcb_map_window(c.get(), windowId);
    xcb_flush(c.get());

    // we should get a window for it
    QSignalSpy windowCreatedSpy(workspace(), &Workspace::windowAdded);
    QVERIFY(windowCreatedSpy.isValid());
    QVERIFY(windowCreatedSpy.wait());
    X11Window *window = windowCreatedSpy.first().first().value<X11Window *>();
    QVERIFY(window);
    QCOMPARE(window->window(), windowId);
    QVERIFY(window->isDecorated());
    QVERIFY(window->isShadeable());
    QVERIFY(!window->isShade());
    QVERIFY(window->isActive());

    // now shade the window
    const QRectF geoBeforeShade = window->frameGeometry();
    QVERIFY(geoBeforeShade.isValid());
    QVERIFY(!geoBeforeShade.isEmpty());
    workspace()->slotWindowShade();
    QVERIFY(window->isShade());
    QVERIFY(window->frameGeometry() != geoBeforeShade);
    // and unshade again
    workspace()->slotWindowShade();
    QVERIFY(!window->isShade());
    QCOMPARE(window->frameGeometry(), geoBeforeShade);

    // and destroy the window again
    xcb_unmap_window(c.get(), windowId);
    xcb_destroy_window(c.get(), windowId);
    xcb_flush(c.get());
    c.reset();

    QSignalSpy windowClosedSpy(window, &X11Window::windowClosed);
    QVERIFY(windowClosedSpy.isValid());
    QVERIFY(windowClosedSpy.wait());
}

}

WAYLANDTEST_MAIN(KWin::ShadeTest)
#include "shade_test.moc"