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#include "expectedeventlist.h"
#include <QDebug>
#include <QCoreApplication>
#include <QAbstractEventDispatcher>
#include <QtTest/QtTest>

ExpectedEventList::ExpectedEventList(QObject *target)
    : QObject(target), eventCount(0)
{
    target->installEventFilter(this);
}

ExpectedEventList::~ExpectedEventList()
{
    qDeleteAll(eventList);
}

void ExpectedEventList::append(QEvent *e)
{
    eventList.append(e);
    ++eventCount;
}

void ExpectedEventList::timerEvent(QTimerEvent *)
{
    timer.stop();
    QAbstractEventDispatcher::instance()->interrupt();
}

bool ExpectedEventList::waitForAllEvents(int maxEventWaitTime)
{
    if (eventList.isEmpty())
        return true;

    int eventCount = eventList.size();
    timer.start(maxEventWaitTime, this);

    while (timer.isActive()) {
        QCoreApplication::processEvents(QEventLoop::WaitForMoreEvents);
        if (eventList.isEmpty())
            return true;

        if (eventCount < eventList.size()){
            eventCount = eventList.size();
            timer.start(maxEventWaitTime, this);
        }
    }

    int eventListNr = eventCount - eventList.size() + 1;
    qWarning() << "Stopped waiting for expected event nr" << eventListNr;
    return false;
}

void ExpectedEventList::compareMouseEvents(QEvent *expected, QEvent *received)
{
    QMouseEvent *e1 = static_cast<QMouseEvent *>(expected);
    QMouseEvent *e2 = static_cast<QMouseEvent *>(received);
    if (e1->pos() == e2->pos()
            && (e1->globalPos() == e2->globalPos())
            && (e1->button() == e2->button())
            && (e1->buttons() == e2->buttons())
            && (e1->modifiers() == e2->modifiers()))
        return; // equal

    int eventListNr = eventCount - eventList.size();
    qWarning() << "Expected event" << eventListNr << "about to fail:";
    qWarning() << "Expected:" << e1;
    qWarning() << "Received:" << e2;
    QCOMPARE(e1->pos(), e2->pos());
    QCOMPARE(e1->globalPos(), e2->globalPos());
    QCOMPARE(e1->button(), e2->button());
    QCOMPARE(e1->buttons(), e2->buttons());
    QCOMPARE(e1->modifiers(), e2->modifiers());
}

void ExpectedEventList::compareKeyEvents(QEvent *event1, QEvent *event2)
{
    QKeyEvent *e1 = static_cast<QKeyEvent *>(event1);
    QKeyEvent *e2 = static_cast<QKeyEvent *>(event2);
    Q_UNUSED(e1);
    Q_UNUSED(e2);
}

bool ExpectedEventList::eventFilter(QObject *, QEvent *received)
{
    if (eventList.isEmpty())
        return false;

    QEvent *expected = eventList.first();
    if (expected->type() == received->type()) {
        eventList.removeFirst();
        switch (received->type()) {
            case QEvent::MouseButtonPress:
            case QEvent::MouseButtonRelease:
            case QEvent::MouseMove:
            case QEvent::MouseButtonDblClick:
            case QEvent::NonClientAreaMouseButtonPress:
            case QEvent::NonClientAreaMouseButtonRelease:
            case QEvent::NonClientAreaMouseButtonDblClick:
            case QEvent::NonClientAreaMouseMove: {
                compareMouseEvents(expected, received);
                break;
            }
            case QEvent::KeyPress: {
                break;
            }
            case QEvent::KeyRelease: {
                break;
            }
            case QEvent::Resize: {
                break;
            }
            case QEvent::WindowActivate: {
                break;
            }
            case QEvent::WindowDeactivate: {
                break;
            }
            default:
                break;
        }
        if (eventList.isEmpty())
            QAbstractEventDispatcher::instance()->interrupt();
    }

    return false;
}