/********************************************************************
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 "mock_libinput.h"
#include "../../libinput/device.h"
#include "../../libinput/events.h"

#include <QtTest/QtTest>

#include <linux/input.h>

Q_DECLARE_METATYPE(libinput_event_type)

using namespace KWin::LibInput;

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

    void testType_data();
    void testType();
    void testAbsoluteMotion_data();
    void testAbsoluteMotion();
    void testNoAssignedSlot();

private:
    libinput_device *m_nativeDevice = nullptr;
    Device *m_device = nullptr;
};

void TestLibinputTouchEvent::init()
{
    m_nativeDevice = new libinput_device;
    m_nativeDevice->touch = true;
    m_nativeDevice->deviceSize = QSizeF(12.5, 13.8);
    m_device = new Device(m_nativeDevice);
}

void TestLibinputTouchEvent::cleanup()
{
    delete m_device;
    m_device = nullptr;

    delete m_nativeDevice;
    m_nativeDevice = nullptr;
}

void TestLibinputTouchEvent::testType_data()
{
    QTest::addColumn<libinput_event_type>("type");
    QTest::addColumn<bool>("hasId");

    QTest::newRow("down") << LIBINPUT_EVENT_TOUCH_DOWN << true;
    QTest::newRow("up") << LIBINPUT_EVENT_TOUCH_UP << true;
    QTest::newRow("motion") << LIBINPUT_EVENT_TOUCH_MOTION << true;
    QTest::newRow("cancel") << LIBINPUT_EVENT_TOUCH_CANCEL << false;
    QTest::newRow("frame") << LIBINPUT_EVENT_TOUCH_FRAME << false;
}

void TestLibinputTouchEvent::testType()
{
    // this test verifies the initialization of a PointerEvent and the parent Event class
    libinput_event_touch *touchEvent = new libinput_event_touch;
    QFETCH(libinput_event_type, type);
    touchEvent->type = type;
    touchEvent->device = m_nativeDevice;
    touchEvent->slot = 0;

    QScopedPointer<Event> event(Event::create(touchEvent));
    // API of event
    QCOMPARE(event->type(), type);
    QCOMPARE(event->device(), m_device);
    QCOMPARE(event->nativeDevice(), m_nativeDevice);
    QCOMPARE((libinput_event*)(*event.data()), touchEvent);
    // verify it's a pointer event
    QVERIFY(dynamic_cast<TouchEvent*>(event.data()));
    QCOMPARE((libinput_event_touch*)(*dynamic_cast<TouchEvent*>(event.data())), touchEvent);
    QFETCH(bool, hasId);
    if (hasId) {
        QCOMPARE(dynamic_cast<TouchEvent*>(event.data())->id(), 0);
    }
}

void TestLibinputTouchEvent::testAbsoluteMotion_data()
{
    QTest::addColumn<libinput_event_type>("type");
    QTest::newRow("down") << LIBINPUT_EVENT_TOUCH_DOWN;
    QTest::newRow("motion") << LIBINPUT_EVENT_TOUCH_MOTION;
}

void TestLibinputTouchEvent::testAbsoluteMotion()
{
    // this test verifies absolute touch points (either down or motion)
    libinput_event_touch *touchEvent = new libinput_event_touch;
    touchEvent->device = m_nativeDevice;
    QFETCH(libinput_event_type, type);
    touchEvent->type = type;
    touchEvent->absolutePos = QPointF(6.25, 6.9);
    touchEvent->time = 500u;
    touchEvent->slot = 1;

    QScopedPointer<Event> event(Event::create(touchEvent));
    auto te = dynamic_cast<TouchEvent*>(event.data());
    QVERIFY(te);
    QCOMPARE(te->type(), type);
    QCOMPARE(te->time(), 500u);
    QCOMPARE(te->absolutePos(), QPointF(6.25, 6.9));
    QCOMPARE(te->absolutePos(QSize(1280, 1024)), QPointF(640, 512));
}

void TestLibinputTouchEvent::testNoAssignedSlot()
{
    // this test verifies that touch events without an assigned slot get id == 0
    libinput_event_touch *touchEvent = new libinput_event_touch;
    touchEvent->type = LIBINPUT_EVENT_TOUCH_UP;
    touchEvent->device = m_nativeDevice;
    // touch events without an assigned slot have slot == -1
    touchEvent->slot = -1;

    QScopedPointer<Event> event(Event::create(touchEvent));
    QVERIFY(dynamic_cast<TouchEvent*>(event.data()));
    QCOMPARE(dynamic_cast<TouchEvent*>(event.data())->id(), 0);
}

QTEST_GUILESS_MAIN(TestLibinputTouchEvent)
#include "touch_event_test.moc"