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#include <QtTest/QTest>
#include <Qt3DAnimation/qblendedclipanimator.h>
#include <Qt3DAnimation/private/qblendedclipanimator_p.h>
#include <Qt3DAnimation/qlerpclipblend.h>
#include <Qt3DAnimation/qchannelmapper.h>
#include <Qt3DCore/qpropertyupdatedchange.h>
#include <Qt3DCore/qnodecreatedchange.h>
#include <Qt3DCore/private/qnodecreatedchangegenerator_p.h>
#include <QObject>
#include <QSignalSpy>
#include <testpostmanarbiter.h>

class tst_QBlendedClipAnimator : public QObject
{
    Q_OBJECT

private Q_SLOTS:

    void initTestCase()
    {
        qRegisterMetaType<Qt3DAnimation::QChannelMapper*>("QChannelMapper *");
        qRegisterMetaType<Qt3DAnimation::QAbstractClipBlendNode*>("QAbstractClipBlendNode *");
    }

    void checkDefaultConstruction()
    {
        // GIVEN
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;

        // THEN
        QVERIFY(blendedClipAnimator.blendTree() == nullptr);
        QVERIFY(blendedClipAnimator.channelMapper() == nullptr);
        QCOMPARE(blendedClipAnimator.isRunning(), false);
        QCOMPARE(blendedClipAnimator.loopCount(), 1);
    }

    void checkPropertyChanges()
    {
        // GIVEN
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;

        {
            // WHEN
            QSignalSpy spy(&blendedClipAnimator, SIGNAL(blendTreeChanged(QAbstractClipBlendNode *)));
            Qt3DAnimation::QLerpClipBlend newValue;
            blendedClipAnimator.setBlendTree(&newValue);

            // THEN
            QVERIFY(spy.isValid());
            QCOMPARE(blendedClipAnimator.blendTree(), &newValue);
            QCOMPARE(spy.count(), 1);

            // WHEN
            spy.clear();
            blendedClipAnimator.setBlendTree(&newValue);

            // THEN
            QCOMPARE(blendedClipAnimator.blendTree(), &newValue);
            QCOMPARE(spy.count(), 0);
        }
        {
            // WHEN
            QSignalSpy spy(&blendedClipAnimator, SIGNAL(channelMapperChanged(QChannelMapper *)));
            Qt3DAnimation::QChannelMapper newValue;
            blendedClipAnimator.setChannelMapper(&newValue);

            // THEN
            QVERIFY(spy.isValid());
            QCOMPARE(blendedClipAnimator.channelMapper(), &newValue);
            QCOMPARE(spy.count(), 1);

            // WHEN
            spy.clear();
            blendedClipAnimator.setChannelMapper(&newValue);

            // THEN
            QCOMPARE(blendedClipAnimator.channelMapper(), &newValue);
            QCOMPARE(spy.count(), 0);
        }
        {
            // WHEN
            QSignalSpy spy(&blendedClipAnimator, SIGNAL(runningChanged(bool)));
            const bool newValue = true;
            blendedClipAnimator.setRunning(newValue);

            // THEN
            QVERIFY(spy.isValid());
            QCOMPARE(blendedClipAnimator.isRunning(), newValue);
            QCOMPARE(spy.count(), 1);

            // WHEN
            spy.clear();
            blendedClipAnimator.setRunning(newValue);

            // THEN
            QCOMPARE(blendedClipAnimator.isRunning(), newValue);
            QCOMPARE(spy.count(), 0);
        }

        {
            // WHEN
            QSignalSpy spy(&blendedClipAnimator, SIGNAL(loopCountChanged(int)));
            const int newValue = 5;
            blendedClipAnimator.setLoopCount(newValue);

            // THEN
            QVERIFY(spy.isValid());
            QCOMPARE(blendedClipAnimator.loopCount(), newValue);
            QCOMPARE(spy.count(), 1);

            // WHEN
            spy.clear();
            blendedClipAnimator.setLoopCount(newValue);

            // THEN
            QCOMPARE(blendedClipAnimator.loopCount(), newValue);
            QCOMPARE(spy.count(), 0);
        }

        {
            // WHEN
            QSignalSpy spy(&blendedClipAnimator, SIGNAL(normalizedTimeChanged(float)));
            const float newValue = 0.5;
            blendedClipAnimator.setNormalizedTime(newValue);

            // THEN
            QVERIFY(spy.isValid());
            QCOMPARE(blendedClipAnimator.normalizedTime(), newValue);
            QCOMPARE(spy.count(), 1);

            // WHEN
            spy.clear();
            blendedClipAnimator.setNormalizedTime(newValue);

            // THEN
            QCOMPARE(blendedClipAnimator.normalizedTime(), newValue);
            QCOMPARE(spy.count(), 0);
        }

        {
            // WHEN
            QSignalSpy spy(&blendedClipAnimator, SIGNAL(normalizedTimeChanged(float)));
            const float newValue = -0.01f; // Invalid
            blendedClipAnimator.setNormalizedTime(newValue);
            const float oldValue = blendedClipAnimator.normalizedTime();

            // THEN
            QVERIFY(spy.isValid());
            QCOMPARE(blendedClipAnimator.normalizedTime(), oldValue);
            QCOMPARE(spy.count(), 0);

            // WHEN
            spy.clear();
            blendedClipAnimator.setNormalizedTime(1.01f); // Invalid

            // THEN
            QCOMPARE(blendedClipAnimator.normalizedTime(), oldValue);
            QCOMPARE(spy.count(), 0);
        }
    }

    void checkCreationData()
    {
        // GIVEN
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;
        Qt3DAnimation::QChannelMapper channelMapper;
        Qt3DAnimation::QLerpClipBlend blendRoot;

        blendedClipAnimator.setBlendTree(&blendRoot);
        blendedClipAnimator.setChannelMapper(&channelMapper);
        blendedClipAnimator.setRunning(true);

        // WHEN
        QVector<Qt3DCore::QNodeCreatedChangeBasePtr> creationChanges;

        {
            Qt3DCore::QNodeCreatedChangeGenerator creationChangeGenerator(&blendedClipAnimator);
            creationChanges = creationChangeGenerator.creationChanges();
        }

        // THEN
        {
            QCOMPARE(creationChanges.size(), 3); // 1 + mapper + blend tree root

            const auto creationChangeData = qSharedPointerCast<Qt3DCore::QNodeCreatedChange<Qt3DAnimation::QBlendedClipAnimatorData>>(creationChanges.first());
            const Qt3DAnimation::QBlendedClipAnimatorData cloneData = creationChangeData->data;

            QCOMPARE(blendedClipAnimator.blendTree()->id(), cloneData.blendTreeRootId);
            QCOMPARE(blendedClipAnimator.channelMapper()->id(), cloneData.mapperId);
            QCOMPARE(blendedClipAnimator.isRunning(), cloneData.running);
            QCOMPARE(blendedClipAnimator.id(), creationChangeData->subjectId());
            QCOMPARE(blendedClipAnimator.isEnabled(), true);
            QCOMPARE(blendedClipAnimator.isEnabled(), creationChangeData->isNodeEnabled());
            QCOMPARE(blendedClipAnimator.metaObject(), creationChangeData->metaObject());
            QCOMPARE(blendedClipAnimator.loopCount(), cloneData.loops);
            QCOMPARE(blendedClipAnimator.normalizedTime(), cloneData.normalizedTime);
        }

        // WHEN
        blendedClipAnimator.setEnabled(false);

        {
            Qt3DCore::QNodeCreatedChangeGenerator creationChangeGenerator(&blendedClipAnimator);
            creationChanges = creationChangeGenerator.creationChanges();
        }

        // THEN
        {
            QCOMPARE(creationChanges.size(), 3); // 1 + mapper + blend tree root

            const auto creationChangeData = qSharedPointerCast<Qt3DCore::QNodeCreatedChange<Qt3DAnimation::QBlendedClipAnimatorData>>(creationChanges.first());
            const Qt3DAnimation::QBlendedClipAnimatorData cloneData = creationChangeData->data;

            QCOMPARE(blendedClipAnimator.blendTree()->id(), cloneData.blendTreeRootId);
            QCOMPARE(blendedClipAnimator.channelMapper()->id(), cloneData.mapperId);
            QCOMPARE(blendedClipAnimator.isRunning(), cloneData.running);
            QCOMPARE(blendedClipAnimator.id(), creationChangeData->subjectId());
            QCOMPARE(blendedClipAnimator.isEnabled(), false);
            QCOMPARE(blendedClipAnimator.isEnabled(), creationChangeData->isNodeEnabled());
            QCOMPARE(blendedClipAnimator.metaObject(), creationChangeData->metaObject());
        }
    }

    void checkBlendTreeUpdate()
    {
        // GIVEN
        TestArbiter arbiter;
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;
        arbiter.setArbiterOnNode(&blendedClipAnimator);
        Qt3DAnimation::QLerpClipBlend blendRoot;

        {
            // WHEN
            blendedClipAnimator.setBlendTree(&blendRoot);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 1);
            auto change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
            QCOMPARE(change->propertyName(), "blendTree");
            QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), blendRoot.id());
            QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);

            arbiter.events.clear();
        }

        {
            // WHEN
            blendedClipAnimator.setBlendTree(&blendRoot);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 0);
        }

    }

    void checkBlendTreeBookkeeping()
    {
        // GIVEN
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;

        {
            // WHEN
            Qt3DAnimation::QLerpClipBlend blendRoot;
            blendedClipAnimator.setBlendTree(&blendRoot);

            QCOMPARE(blendedClipAnimator.blendTree(), &blendRoot);
        }

        // THEN -> should not crash
        QVERIFY(blendedClipAnimator.blendTree() == nullptr);
    }

    void checkChannelMapperUpdate()
    {
        // GIVEN
        TestArbiter arbiter;
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;
        arbiter.setArbiterOnNode(&blendedClipAnimator);

        Qt3DAnimation::QChannelMapper channelMapper;
        {
            // WHEN
            blendedClipAnimator.setChannelMapper(&channelMapper);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 1);
            auto change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
            QCOMPARE(change->propertyName(), "channelMapper");
            QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), channelMapper.id());
            QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);

            arbiter.events.clear();
        }

        {
            // WHEN
            blendedClipAnimator.setChannelMapper(&channelMapper);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 0);
        }

    }

    void checkChannelMapperBookkeeping()
    {
        // GIVEN
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;

        {
            // WHEN
            Qt3DAnimation::QChannelMapper channelMapper;
            blendedClipAnimator.setChannelMapper(&channelMapper);

            QCOMPARE(blendedClipAnimator.channelMapper(), &channelMapper);
        }

        // THEN -> should not crash
        QVERIFY(blendedClipAnimator.channelMapper() == nullptr);
    }

    void checkRunningUpdate()
    {
        // GIVEN
        TestArbiter arbiter;
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;
        arbiter.setArbiterOnNode(&blendedClipAnimator);

        {
            // WHEN
            blendedClipAnimator.setRunning(true);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 1);
            auto change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
            QCOMPARE(change->propertyName(), "running");
            QCOMPARE(change->value().value<bool>(), blendedClipAnimator.isRunning());
            QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);

            arbiter.events.clear();
        }

        {
            // WHEN
            blendedClipAnimator.setRunning(true);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 0);
        }

    }

    void checkLoopsUpdate()
    {
        // GIVEN
        TestArbiter arbiter;
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;
        arbiter.setArbiterOnNode(&blendedClipAnimator);

        {
            // WHEN
            blendedClipAnimator.setLoopCount(1584);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 1);
            auto change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
            QCOMPARE(change->propertyName(), "loops");
            QCOMPARE(change->value().value<int>(), blendedClipAnimator.loopCount());
            QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);

            arbiter.events.clear();
        }

        {
            // WHEN
            blendedClipAnimator.setLoopCount(1584);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 0);
        }

    }

    void checkNormalizedTimeUpdate()
    {
        // GIVEN
        TestArbiter arbiter;
        Qt3DAnimation::QBlendedClipAnimator blendedClipAnimator;
        arbiter.setArbiterOnNode(&blendedClipAnimator);

        {
            // WHEN
            blendedClipAnimator.setNormalizedTime(0.5f);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 1);
            auto change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
            QCOMPARE(change->propertyName(), "normalizedTime");
            QCOMPARE(change->value().value<float>(), blendedClipAnimator.normalizedTime());
            QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);

            arbiter.events.clear();
        }

        {
            // WHEN
            blendedClipAnimator.setNormalizedTime(0.5f);
            QCoreApplication::processEvents();

            // THEN
            QCOMPARE(arbiter.events.size(), 0);
        }

    }
};

QTEST_MAIN(tst_QBlendedClipAnimator)

#include "tst_qblendedclipanimator.moc"