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#include <quickviewsharedengine.h>
#include <qtest.h>
#include <QSignalSpy>
#include <qqmlcomponent.h>
#include <qqmlcontext.h>
#include <qquickview.h>
#include <qquickitem.h>
#include "util.h"
#include <QWindow>
#include <QDebug>
#include <qqmlengine.h>

class QuickViewSharedEngineTest : public QQmlDataTest
{
    Q_OBJECT
public:
    QuickViewSharedEngineTest();

private Q_SLOTS:
    void resizemodeitem();
    void errors();
    void engine();
};


QuickViewSharedEngineTest::QuickViewSharedEngineTest()
{
}

void QuickViewSharedEngineTest::resizemodeitem()
{
    QWindow window;
    window.setGeometry(0, 0, 400, 400);

    KQuickAddons::QuickViewSharedEngine *view = new KQuickAddons::QuickViewSharedEngine(&window);
    QVERIFY(view);
    view->setResizeMode(KQuickAddons::QuickViewSharedEngine::SizeRootObjectToView);
    QCOMPARE(QSize(0,0), view->initialSize());
    view->setSource(testFileUrl("resizemodeitem.qml"));
    QQuickItem* item = qobject_cast<QQuickItem*>(view->rootObject());
    QVERIFY(item);
    window.show();

    view->showNormal();

    // initial size from root object
    QCOMPARE(item->width(), 200.0);
    QCOMPARE(item->height(), 200.0);
    QCOMPARE(view->size(), QSize(200, 200));
    QCOMPARE(view->size(), view->sizeHint());
    QCOMPARE(view->size(), view->initialSize());

    // size update from view
    view->resize(QSize(80,100));

    QTRY_COMPARE(item->width(), 80.0);
    QCOMPARE(item->height(), 100.0);
    QCOMPARE(view->size(), QSize(80, 100));
    QCOMPARE(view->size(), view->sizeHint());

    view->setResizeMode(KQuickAddons::QuickViewSharedEngine::SizeViewToRootObject);

    // size update from view disabled
    view->resize(QSize(60,80));
    QCOMPARE(item->width(), 80.0);
    QCOMPARE(item->height(), 100.0);
    QTest::qWait(50);
    QCOMPARE(view->size(), QSize(60, 80));

    // size update from root object
    item->setWidth(250);
    item->setHeight(350);
    QCOMPARE(item->width(), 250.0);
    QCOMPARE(item->height(), 350.0);
    QTRY_COMPARE(view->size(), QSize(250, 350));
    QCOMPARE(view->size(), QSize(250, 350));
    QCOMPARE(view->size(), view->sizeHint());

    // reset window
    window.hide();
    delete view;
    view = new KQuickAddons::QuickViewSharedEngine(&window);
    QVERIFY(view);
    view->setResizeMode(KQuickAddons::QuickViewSharedEngine::SizeViewToRootObject);
    view->setSource(testFileUrl("resizemodeitem.qml"));
    item = qobject_cast<QQuickItem*>(view->rootObject());
    QVERIFY(item);
    window.show();

    view->showNormal();

    // initial size for root object
    QCOMPARE(item->width(), 200.0);
    QCOMPARE(item->height(), 200.0);
    QCOMPARE(view->size(), view->sizeHint());
    QCOMPARE(view->size(), view->initialSize());

    // size update from root object
    item->setWidth(80);
    item->setHeight(100);
    QCOMPARE(item->width(), 80.0);
    QCOMPARE(item->height(), 100.0);
    QTRY_COMPARE(view->size(), QSize(80, 100));
    QCOMPARE(view->size(), QSize(80, 100));
    QCOMPARE(view->size(), view->sizeHint());

    // size update from root object disabled
    view->setResizeMode(KQuickAddons::QuickViewSharedEngine::SizeRootObjectToView);
    item->setWidth(60);
    item->setHeight(80);
    QCOMPARE(view->width(), 80);
    QCOMPARE(view->height(), 100);
    QCOMPARE(QSize(item->width(), item->height()), view->sizeHint());

    // size update from view
    view->resize(QSize(200,300));
    QTRY_COMPARE(item->width(), 200.0);
    QCOMPARE(item->height(), 300.0);
    QCOMPARE(view->size(), QSize(200, 300));
    QCOMPARE(view->size(), view->sizeHint());

    delete view;

    // if we set a specific size for the view then it should keep that size
    // for SizeRootObjectToView mode.
    view = new KQuickAddons::QuickViewSharedEngine(&window);
    view->resize(300, 300);
    view->setResizeMode(KQuickAddons::QuickViewSharedEngine::SizeRootObjectToView);
    QCOMPARE(QSize(0,0), view->initialSize());
    view->setSource(testFileUrl("resizemodeitem.qml"));qWarning()<<"bbb"<<view->size();
    view->resize(300, 300);qWarning()<<"ccc"<<view->size();
    item = qobject_cast<QQuickItem*>(view->rootObject());
    QVERIFY(item);

    view->showNormal();
    QTest::qWait(50);

    // initial size from root object
    QCOMPARE(item->width(), 300.0);
    QCOMPARE(item->height(), 300.0);
    QCOMPARE(view->size(), QSize(300, 300));
    QCOMPARE(view->size(), view->sizeHint());
    QCOMPARE(view->initialSize(), QSize(200, 200)); // initial object size

    delete view;
}

void QuickViewSharedEngineTest::errors()
{
    KQuickAddons::QuickViewSharedEngine *view = new KQuickAddons::QuickViewSharedEngine;
    QVERIFY(view);
    QQmlTestMessageHandler messageHandler;
    view->setSource(testFileUrl("error1.qml"));
    QCOMPARE(view->status(), QQmlComponent::Error);
    QCOMPARE(view->errors().count(), 1);
    delete view;
}

void QuickViewSharedEngineTest::engine()
{
    //test if engines are actually shared
    //test if the engine gets deleted when the last view dies
    KQuickAddons::QuickViewSharedEngine *view = new KQuickAddons::QuickViewSharedEngine();
    QQmlEngine *engine = view->engine();

    KQuickAddons::QuickViewSharedEngine *view2 = new KQuickAddons::QuickViewSharedEngine();
    QQmlEngine *engine2 = view2->engine();

    delete view;
    delete view2;

    view = new KQuickAddons::QuickViewSharedEngine();
    QQmlEngine *engine3 = view->engine();

    QCOMPARE(engine, engine2);
    QVERIFY(engine != engine3);
}

QTEST_MAIN(QuickViewSharedEngineTest)

#include "quickviewsharedengine.moc"
