/*
 * Copyright (c) Contributors to the Open 3D Engine Project.
 * For complete copyright and license terms please see the LICENSE at the root of this distribution.
 *
 * SPDX-License-Identifier: Apache-2.0 OR MIT
 *
 */


#include <AzCore/Serialization/SerializeContext.h>
#include "EventNode.h"
#include "AnimTrack.h"
#include "TrackEventTrack.h"
#include "Maestro/Types/AnimNodeType.h"
#include "Maestro/Types/AnimValueType.h"
#include "Maestro/Types/AnimParamType.h"

#include <ISystem.h>

//////////////////////////////////////////////////////////////////////////
CAnimEventNode::CAnimEventNode()
    : CAnimEventNode(0)
{
}

//////////////////////////////////////////////////////////////////////////
CAnimEventNode::CAnimEventNode(const int id)
    : CAnimNode(id, AnimNodeType::Event)
{
    SetFlags(GetFlags() | eAnimNodeFlags_CanChangeName);
    m_lastEventKey = -1;
}

//////////////////////////////////////////////////////////////////////////
void CAnimEventNode::CreateDefaultTracks()
{
    CreateTrack(AnimParamType::TrackEvent);
}

//////////////////////////////////////////////////////////////////////////
unsigned int CAnimEventNode::GetParamCount() const
{
    return 1;
}

//////////////////////////////////////////////////////////////////////////
CAnimParamType CAnimEventNode::GetParamType(unsigned int nIndex) const
{
    if (nIndex == 0)
    {
        return AnimParamType::TrackEvent;
    }

    return AnimParamType::Invalid;
}

//////////////////////////////////////////////////////////////////////////
bool CAnimEventNode::GetParamInfoFromType(const CAnimParamType& animParamType, SParamInfo& info) const
{
    if (animParamType.GetType() == AnimParamType::TrackEvent)
    {
        info.flags = IAnimNode::ESupportedParamFlags(0);
        info.name = "Track Event";
        info.paramType = AnimParamType::TrackEvent;
        info.valueType = AnimValueType::Unknown;
        return true;
    }
    return false;
}

//////////////////////////////////////////////////////////////////////////
void CAnimEventNode::Animate(SAnimContext& ec)
{
    // Get track event
    int trackCount = NumTracks();
    for (int paramIndex = 0; paramIndex < trackCount; paramIndex++)
    {
        CAnimParamType trackType = m_tracks[paramIndex]->GetParameterType();
        IAnimTrack* pTrack = m_tracks[paramIndex].get();

        if (pTrack && pTrack->GetFlags() & IAnimTrack::eAnimTrackFlags_Disabled)
        {
            continue;
        }

        // Check for fire
        if (CTrackEventTrack* pEventTrack = (CTrackEventTrack*)pTrack)
        {
            IEventKey key;
            int nEventKey = pEventTrack->GetActiveKey(ec.time, &key);
            if (nEventKey != m_lastEventKey && nEventKey >= 0)
            {
                bool bKeyAfterStartTime = key.time >= ec.startTime;
                if (bKeyAfterStartTime)
                {
                    ec.sequence->TriggerTrackEvent(key.event.c_str(), key.eventValue.c_str());
                }
            }
            m_lastEventKey = nEventKey;
        }
    }
}

void CAnimEventNode::OnReset()
{
    m_lastEventKey = -1;
}

//////////////////////////////////////////////////////////////////////////
void CAnimEventNode::Reflect(AZ::ReflectContext* context)
{
    if (auto serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
    {
        serializeContext->Class<CAnimEventNode, CAnimNode>()
            ->Version(1);
    }
}