#include "VentuzBPEvent.h"
#include "VentuzPluginModule.h"
#include "ITextureShare.h"
#include "ITextureShareItem.h"
#include "ITextureShareCore.h"
#include "Runtime/Launch/Resources/Version.h"

static uint sCRCTable[256] =
{
    0x00000000L, 0x77073096L, 0xEE0E612CL, 0x990951BAL,
    0x076DC419L, 0x706AF48FL, 0xE963A535L, 0x9E6495A3L,
    0x0EDB8832L, 0x79DCB8A4L, 0xE0D5E91EL, 0x97D2D988L,
    0x09B64C2BL, 0x7EB17CBDL, 0xE7B82D07L, 0x90BF1D91L,
    0x1DB71064L, 0x6AB020F2L, 0xF3B97148L, 0x84BE41DEL,
    0x1ADAD47DL, 0x6DDDE4EBL, 0xF4D4B551L, 0x83D385C7L,
    0x136C9856L, 0x646BA8C0L, 0xFD62F97AL, 0x8A65C9ECL,
    0x14015C4FL, 0x63066CD9L, 0xFA0F3D63L, 0x8D080DF5L,
    0x3B6E20C8L, 0x4C69105EL, 0xD56041E4L, 0xA2677172L,
    0x3C03E4D1L, 0x4B04D447L, 0xD20D85FDL, 0xA50AB56BL,
    0x35B5A8FAL, 0x42B2986CL, 0xDBBBC9D6L, 0xACBCF940L,
    0x32D86CE3L, 0x45DF5C75L, 0xDCD60DCFL, 0xABD13D59L,
    0x26D930ACL, 0x51DE003AL, 0xC8D75180L, 0xBFD06116L,
    0x21B4F4B5L, 0x56B3C423L, 0xCFBA9599L, 0xB8BDA50FL,
    0x2802B89EL, 0x5F058808L, 0xC60CD9B2L, 0xB10BE924L,
    0x2F6F7C87L, 0x58684C11L, 0xC1611DABL, 0xB6662D3DL,
    0x76DC4190L, 0x01DB7106L, 0x98D220BCL, 0xEFD5102AL,
    0x71B18589L, 0x06B6B51FL, 0x9FBFE4A5L, 0xE8B8D433L,
    0x7807C9A2L, 0x0F00F934L, 0x9609A88EL, 0xE10E9818L,
    0x7F6A0DBBL, 0x086D3D2DL, 0x91646C97L, 0xE6635C01L,
    0x6B6B51F4L, 0x1C6C6162L, 0x856530D8L, 0xF262004EL,
    0x6C0695EDL, 0x1B01A57BL, 0x8208F4C1L, 0xF50FC457L,
    0x65B0D9C6L, 0x12B7E950L, 0x8BBEB8EAL, 0xFCB9887CL,
    0x62DD1DDFL, 0x15DA2D49L, 0x8CD37CF3L, 0xFBD44C65L,
    0x4DB26158L, 0x3AB551CEL, 0xA3BC0074L, 0xD4BB30E2L,
    0x4ADFA541L, 0x3DD895D7L, 0xA4D1C46DL, 0xD3D6F4FBL,
    0x4369E96AL, 0x346ED9FCL, 0xAD678846L, 0xDA60B8D0L,
    0x44042D73L, 0x33031DE5L, 0xAA0A4C5FL, 0xDD0D7CC9L,
    0x5005713CL, 0x270241AAL, 0xBE0B1010L, 0xC90C2086L,
    0x5768B525L, 0x206F85B3L, 0xB966D409L, 0xCE61E49FL,
    0x5EDEF90EL, 0x29D9C998L, 0xB0D09822L, 0xC7D7A8B4L,
    0x59B33D17L, 0x2EB40D81L, 0xB7BD5C3BL, 0xC0BA6CADL,
    0xEDB88320L, 0x9ABFB3B6L, 0x03B6E20CL, 0x74B1D29AL,
    0xEAD54739L, 0x9DD277AFL, 0x04DB2615L, 0x73DC1683L,
    0xE3630B12L, 0x94643B84L, 0x0D6D6A3EL, 0x7A6A5AA8L,
    0xE40ECF0BL, 0x9309FF9DL, 0x0A00AE27L, 0x7D079EB1L,
    0xF00F9344L, 0x8708A3D2L, 0x1E01F268L, 0x6906C2FEL,
    0xF762575DL, 0x806567CBL, 0x196C3671L, 0x6E6B06E7L,
    0xFED41B76L, 0x89D32BE0L, 0x10DA7A5AL, 0x67DD4ACCL,
    0xF9B9DF6FL, 0x8EBEEFF9L, 0x17B7BE43L, 0x60B08ED5L,
    0xD6D6A3E8L, 0xA1D1937EL, 0x38D8C2C4L, 0x4FDFF252L,
    0xD1BB67F1L, 0xA6BC5767L, 0x3FB506DDL, 0x48B2364BL,
    0xD80D2BDAL, 0xAF0A1B4CL, 0x36034AF6L, 0x41047A60L,
    0xDF60EFC3L, 0xA867DF55L, 0x316E8EEFL, 0x4669BE79L,
    0xCB61B38CL, 0xBC66831AL, 0x256FD2A0L, 0x5268E236L,
    0xCC0C7795L, 0xBB0B4703L, 0x220216B9L, 0x5505262FL,
    0xC5BA3BBEL, 0xB2BD0B28L, 0x2BB45A92L, 0x5CB36A04L,
    0xC2D7FFA7L, 0xB5D0CF31L, 0x2CD99E8BL, 0x5BDEAE1DL,
    0x9B64C2B0L, 0xEC63F226L, 0x756AA39CL, 0x026D930AL,
    0x9C0906A9L, 0xEB0E363FL, 0x72076785L, 0x05005713L,
    0x95BF4A82L, 0xE2B87A14L, 0x7BB12BAEL, 0x0CB61B38L,
    0x92D28E9BL, 0xE5D5BE0DL, 0x7CDCEFB7L, 0x0BDBDF21L,
    0x86D3D2D4L, 0xF1D4E242L, 0x68DDB3F8L, 0x1FDA836EL,
    0x81BE16CDL, 0xF6B9265BL, 0x6FB077E1L, 0x18B74777L,
    0x88085AE6L, 0xFF0F6A70L, 0x66063BCAL, 0x11010B5CL,
    0x8F659EFFL, 0xF862AE69L, 0x616BFFD3L, 0x166CCF45L,
    0xA00AE278L, 0xD70DD2EEL, 0x4E048354L, 0x3903B3C2L,
    0xA7672661L, 0xD06016F7L, 0x4969474DL, 0x3E6E77DBL,
    0xAED16A4AL, 0xD9D65ADCL, 0x40DF0B66L, 0x37D83BF0L,
    0xA9BCAE53L, 0xDEBB9EC5L, 0x47B2CF7FL, 0x30B5FFE9L,
    0xBDBDF21CL, 0xCABAC28AL, 0x53B39330L, 0x24B4A3A6L,
    0xBAD03605L, 0xCDD70693L, 0x54DE5729L, 0x23D967BFL,
    0xB3667A2EL, 0xC4614AB8L, 0x5D681B02L, 0x2A6F2B94L,
    0xB40BBE37L, 0xC30C8EA1L, 0x5A05DF1BL, 0x2D02EF8DL
};

uint ChecksumCRC32(const uint8* data, __int64 size)
{
    uint crc = 0xffffffff;

    const uint8* end = data + size;
    while (data < end)
        crc = sCRCTable[(crc ^ *data++) & 0xff] ^ (crc >> 8);

    return crc ^ 0xfffffffe;
}

uint GetLowerStringHash( FString string )
{
    string.ToLowerInline();

    auto stringData = string.GetCharArray().GetData();
    if ( !stringData )
    {
        UE_LOG( LogTemp, Warning, TEXT( "Null pointer string passed to string hasher!" ) );
        return 0;
    }

    auto utf8String = TCHAR_TO_UTF8( stringData );
    if ( !utf8String )
    {
        UE_LOG( LogTemp, Warning, TEXT( "Failed to convert string to utf8 in string hasher!" ) );
        return 0;
    }

    std::string converted( utf8String );
    return ChecksumCRC32( (const uint8*)converted.data(), converted.size() );
}

UVentuzBPFunctionLibrary::UVentuzBPFunctionLibrary(class FObjectInitializer const& objInt) : Super(objInt)
{

}

FVentuzPlugin* GetVentuzPlugin()
{
    if (!IVentuzPlugin::IsAvailable())
        return nullptr;    
    return &FModuleManager::LoadModuleChecked<FVentuzPlugin>("VentuzPlugin");
}

void UVentuzBPFunctionLibrary::RegisterVentuzMethod( const FString& node, const FString& method, const FVentuzEventCallback calledEvent)
{
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if (!plugin)
        return;

    plugin->RegisterEvent( GetLowerStringHash( node + TEXT( "." ) + method ), calledEvent );
}

void UVentuzBPFunctionLibrary::TriggerVentuzEvent( const FString& node, const FString& event, const int argument )
{
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->TriggerEvent( GetLowerStringHash( node + TEXT( "." ) + event ), argument );
}

FTransform UVentuzBPFunctionLibrary::GetVentuzCameraTransform(bool& isAvailable)
{
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if (!plugin)
    {
        isAvailable = false;
        return FTransform();
    }

    return plugin->GetVentuzCameraTransform();
}

FTransform UVentuzBPFunctionLibrary::GetVentuzTransformValue(const FString& valueName, bool& isAvailable)
{
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return FTransform();
    }

    return plugin->GetTransformValue( GetLowerStringHash( valueName ), isAvailable );
}

void UVentuzBPFunctionLibrary::SendVentuzTransformValue( const FString& valueName, const FTransform& value )
{
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendTransformValue( GetLowerStringHash( valueName ), value );
}

void UVentuzBPFunctionLibrary::CreateVentuzTextureShare( /*const FString& textureShareName, const int stereoscopicPass,*/ const bool enabled )
{
    if ( !ITextureShare::IsAvailable() || !ITextureShareCore::IsAvailable() )
    {
        UE_LOG( LogTemp, Error, TEXT( "Texture Share API unavailable!" ) );
        return;
    }

    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        UE_LOG( LogTemp, Error, TEXT( "Ventuz plugin unavailable!" ) );
        return;
    }

    GUID connectionID = plugin->GetVentuzLaunchID();

    char guidText[ 256 ];
    sprintf_s( guidText, "%x%x%x%x%x_\0", (uint32_t)connectionID.Data1, (uint32_t)connectionID.Data2, (uint32_t)connectionID.Data3, *( (uint32_t*)&connectionID.Data4[ 0 ] ), *( (uint32_t*)&connectionID.Data4[ 4 ] ) );
    FString realShareName = FString( guidText );

    static ITextureShare& TextureShareAPI = ITextureShare::Get();

    FTextureShareSyncPolicy syncPolicy;
    syncPolicy.ConnectionSync = ETextureShareSyncConnect::None;
    syncPolicy.FrameSync = ETextureShareSyncFrame::FrameSync;
    syncPolicy.TextureSync = ETextureShareSyncSurface::SyncRead;

    TSharedPtr<ITextureShareItem> shareObject;

    if ( !TextureShareAPI.GetShare( realShareName, shareObject ) )
    {
        if ( !TextureShareAPI.CreateShare( realShareName, syncPolicy ) )
        {
            UE_LOG( LogTemp, Error, TEXT( "Failed to create texture share!" ) );
            return;
        }
        if ( !TextureShareAPI.GetShare( realShareName, shareObject ) )
        {
            UE_LOG( LogTemp, Error, TEXT( "Failed to create texture share!" ) );
            return;
        }
    }

    EnableVentuzTextureShare( realShareName, enabled );

#if ENGINE_MAJOR_VERSION >= 5 
    int stereoscopicPass = INDEX_NONE;
#else
    int stereoscopicPass = 0;
#endif

    if ( !TextureShareAPI.LinkSceneContextToShare( shareObject, stereoscopicPass, true ) )
    {
        UE_LOG( LogTemp, Error, TEXT( "Failed to link context to texture share!" ) );
        return;
    }

    FTextureShareSyncPolicySettings localSyncPolicy = ITextureShareCore::Get().GetSyncPolicySettings( ETextureShareProcess::Server );    
    localSyncPolicy.TimeOut.FrameSync = 0.2f;
    ITextureShareCore::Get().SetSyncPolicySettings( ETextureShareProcess::Server, localSyncPolicy );

    plugin->RegisterTextureShare( realShareName );
}

void UVentuzBPFunctionLibrary::DestroyVentuzTextureShare( /*const FString& textureShareName*/ )
{
    if ( !ITextureShare::IsAvailable() )
    {
        UE_LOG( LogTemp, Error, TEXT( "Texture Share API unavailable!" ) );
        return;
    }

    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        UE_LOG( LogTemp, Error, TEXT( "Ventuz plugin unavailable!" ) );
        return;
    }

    GUID connectionID = plugin->GetVentuzLaunchID();

    char guidText[ 256 ];
    sprintf_s( guidText, "%x%x%x%x%x_\0", (uint32_t)connectionID.Data1, (uint32_t)connectionID.Data2, (uint32_t)connectionID.Data3, *( (uint32_t*)&connectionID.Data4[ 0 ] ), *( (uint32_t*)&connectionID.Data4[ 4 ] ) );
    FString realShareName = FString( guidText );

    plugin->UnRegisterTextureShare( realShareName );

    static ITextureShare& TextureShareAPI = ITextureShare::Get();

    if ( !TextureShareAPI.ReleaseShare( realShareName ) )
    {
        UE_LOG( LogTemp, Error, TEXT( "Failed to release texture share!" ) );
        return;
    }
}

void UVentuzBPFunctionLibrary::EnableVentuzTextureShare( const FString& textureShareName, const bool enabled /*= true */ )
{
    if ( !ITextureShare::IsAvailable() )
    {
        UE_LOG( LogTemp, Error, TEXT( "Texture Share API unavailable!" ) );
        return;
    }

    static ITextureShare& TextureShareAPI = ITextureShare::Get();
    TSharedPtr<ITextureShareItem> shareObject;

    if ( !TextureShareAPI.GetShare( textureShareName, shareObject ) )
    {
        UE_LOG( LogTemp, Error, TEXT( "Failed to create texture share!" ) );
        return;
    }

    if ( enabled )
        shareObject->BeginSession();
    else
        shareObject->EndSession();
}

int UVentuzBPFunctionLibrary::GetVentuzIntValueByNodeName( const FString& nodeName, const FString& fieldName, bool& isAvailable )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::GetVentuzIntValueByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return 0;
    }

    return plugin->GetIntValue( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), isAvailable );
}

float UVentuzBPFunctionLibrary::GetVentuzFloatValueByNodeName( const FString& nodeName, const FString& fieldName, bool& isAvailable )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::GetVentuzFloatValueByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return 0;
    }

    return plugin->GetFloatValue( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), isAvailable );
}

FString UVentuzBPFunctionLibrary::GetVentuzStringValueByNodeName( const FString& nodeName, const FString& fieldName, bool& isAvailable )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::GetVentuzStringValueByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return "";
    }

    return plugin->GetStringValue( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), isAvailable );
}

bool UVentuzBPFunctionLibrary::GetVentuzBoolValueByNodeName( const FString& nodeName, const FString& fieldName, bool& isAvailable )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::GetVentuzBoolValueByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return 0;
    }

    return plugin->GetBoolValue( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), isAvailable );
}

TArray<int> UVentuzBPFunctionLibrary::GetVentuzIntArrayByNodeName( const FString& nodeName, const FString& fieldName, bool& isAvailable )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::GetVentuzIntArrayByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return TArray<int>();
    }

    return plugin->GetIntArray( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), isAvailable );
}

TArray<float> UVentuzBPFunctionLibrary::GetVentuzFloatArrayByNodeName( const FString& nodeName, const FString& fieldName, bool& isAvailable )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::GetVentuzFloatArrayByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return TArray<float>();
    }

    return plugin->GetFloatArray( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), isAvailable );
}

TArray<FString> UVentuzBPFunctionLibrary::GetVentuzStringArrayByNodeName( const FString& nodeName, const FString& fieldName, bool& isAvailable )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::GetVentuzStringArrayByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return TArray<FString>();
    }

    return plugin->GetStringArray( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), isAvailable );
}

TArray<bool> UVentuzBPFunctionLibrary::GetVentuzBoolArrayByNodeName( const FString& nodeName, const FString& fieldName, bool& isAvailable )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::GetVentuzBoolArrayByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        isAvailable = false;
        return TArray<bool>();
    }

    return plugin->GetBoolArray( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), isAvailable );
}

void UVentuzBPFunctionLibrary::SendVentuzIntValueByNodeName( const FString& nodeName, const FString& fieldName, const int value )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::SendVentuzIntValueByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendIntValue( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), value );
}

void UVentuzBPFunctionLibrary::SendVentuzFloatValueByNodeName( const FString& nodeName, const FString& fieldName, const float value )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::SendVentuzFloatValueByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendFloatValue( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), value );
}

void UVentuzBPFunctionLibrary::SendVentuzStringValueByNodeName( const FString& nodeName, const FString& fieldName, const FString value )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::SendVentuzStringValueByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendStringValue( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), value );
}

void UVentuzBPFunctionLibrary::SendVentuzBoolValueByNodeName( const FString& nodeName, const FString& fieldName, const bool value )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::SendVentuzBoolValueByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendBoolValue( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), value );
}

void UVentuzBPFunctionLibrary::SendVentuzIntArrayByNodeName( const FString& nodeName, const FString& fieldName, const TArray<int> value )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::SendVentuzIntArrayByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendIntArray( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), value );
}

void UVentuzBPFunctionLibrary::SendVentuzFloatArrayByNodeName( const FString& nodeName, const FString& fieldName, const TArray<float> value )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::SendVentuzFloatArrayByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendFloatArray( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), value );
}

void UVentuzBPFunctionLibrary::SendVentuzStringArrayByNodeName( const FString& nodeName, const FString& fieldName, const TArray<FString> value )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::SendVentuzStringArrayByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendStringArray( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), value );
}

void UVentuzBPFunctionLibrary::SendVentuzBoolArrayByNodeName( const FString& nodeName, const FString& fieldName, const TArray<bool> value )
{
    TRACE_CPUPROFILER_EVENT_SCOPE( TEXT( "UVentuzBPFunctionLibrary::SendVentuzBoolArrayByNodeName" ) );
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return;

    plugin->SendBoolArray( GetLowerStringHash( nodeName + TEXT( "." ) + fieldName ), value );
}

FVector UVentuzBPFunctionLibrary::VentuzToUE4_Position( const FVector& position )
{
    return FVector( position.X * 100.0f, -position.Z * 100.0f, position.Y * 100.0f );
}

FVector UVentuzBPFunctionLibrary::UE4_ToVentuzPosition( const FVector& position )
{
    return FVector( position.X * 0.01f, position.Z * 0.01f, -position.Y * 0.01f );
}

FVector UVentuzBPFunctionLibrary::VentuzToUE4_Scale( const FVector& scale )
{
    return FVector( scale.X, scale.Z, scale.Y );
}

FVector UVentuzBPFunctionLibrary::UE4_ToVentuzScale( const FVector& scale )
{
    return FVector( scale.X, scale.Z, scale.Y );
}

FRotator UVentuzBPFunctionLibrary::VentuzToUE4_Rotation( const FVector& rotation, const EulerRotationOrder ventuzRotationOrder /*= EulerRotationOrder::ZYX */ )
{
    FQuat q1;
    FQuat q2;
    FQuat q3;

    FVector xAxis = FVector( 1, 0, 0 );
    FVector yAxis = FVector( 0, 0, 1 );
    FVector zAxis = FVector( 0, -1, 0 );

    FQuat xRot = FQuat( xAxis, rotation.X / 180.0f * PI );
    FQuat yRot = FQuat( yAxis, rotation.Y / 180.0f * PI );
    FQuat zRot = FQuat( zAxis, rotation.Z / 180.0f * PI );

    switch ( ventuzRotationOrder )
    {
    case EulerRotationOrder::ZXY:
        q1 = zRot;
        q2 = xRot;
        q3 = yRot;
        break;
    case EulerRotationOrder::ZYX:
        q1 = zRot;
        q2 = yRot;
        q3 = xRot;
        break;
    case EulerRotationOrder::YZX:
        q1 = yRot;
        q2 = zRot;
        q3 = xRot;
        break;
    case EulerRotationOrder::YXZ:
        q1 = yRot;
        q2 = xRot;
        q3 = zRot;
        break;
    case EulerRotationOrder::XYZ: // ZYX
        q1 = xRot;
        q2 = yRot;
        q3 = zRot;
        break;
    case EulerRotationOrder::XZY:
        q1 = xRot;
        q2 = zRot;
        q3 = yRot;
        break;
    default:
        break;
    }

    return FRotator( ( q3 * q2 ) * q1 );
}

/*
FVector QuatToEuler( const FQuat& src, EulerRotationOrder targetOrder )
{
    // based on Quaternion to Euler Angle Conversion for Arbitrary Rotation Sequence Using Geometric Methods by Noel H.Hughes

    FVector result;

    FVector axes[ 3 ] = { FVector( 1, 0, 0 ),
                          FVector( 0, 1, 0 ),
                          FVector( 0, 0, 1 ) };

    // convert to ventuz coordinate system - internal rotation by 90 degrees
    FQuat qG = src;
    //qG.Y = src.Z;
    //qG.Z = -src.Y;

    FVector vAxes[ 3 ];

    int idx[ 3 ];

    bool circular = false;

    switch ( targetOrder )
    {
    case EulerRotationOrder::ZXY:
        circular = true;
        idx[ 0 ] = 2;
        idx[ 1 ] = 0;
        idx[ 2 ] = 1;
        break;
    case EulerRotationOrder::ZYX:
        idx[ 0 ] = 2;
        idx[ 1 ] = 1;
        idx[ 2 ] = 0;
        break;
    case EulerRotationOrder::YZX:
        circular = true;
        idx[ 0 ] = 1;
        idx[ 1 ] = 2;
        idx[ 2 ] = 0;
        break;
    case EulerRotationOrder::YXZ:
        idx[ 0 ] = 1;
        idx[ 1 ] = 0;
        idx[ 2 ] = 2;
        break;
    case EulerRotationOrder::XYZ:
        circular = true;
        idx[ 0 ] = 0;
        idx[ 1 ] = 1;
        idx[ 2 ] = 2;
        break;
    case EulerRotationOrder::XZY:
        idx[ 0 ] = 0;
        idx[ 1 ] = 2;
        idx[ 2 ] = 1;
        break;
    default:
        return FVector();
        break;
    }

    vAxes[ 0 ] = axes[ idx[ 0 ] ];
    vAxes[ 1 ] = axes[ idx[ 1 ] ];
    vAxes[ 2 ] = axes[ idx[ 2 ] ];

    int i1 = idx[ 0 ];
    int i2 = idx[ 1 ];
    int i3 = idx[ 2 ];
    int i1n = ( idx[ 0 ] + 1 ) % 3;
    int i1nn = ( idx[ 0 ] + 2 ) % 3;

    FVector v3rot = qG.RotateVector( vAxes[ 2 ] );
    
    if ( !circular )
    {
        result.X = atan2( v3rot[ i1nn ], v3rot[ i1n ] );
        result.Y = -asin( v3rot[ i1 ] );
    }
    else
    {
        result.X = atan2( -v3rot[ i1n ], v3rot[ i1nn ] );
        result.Y = asin( v3rot[ i1 ] );
    }

    FQuat q1( 0, 0, 0, cos( result.X / 2.0f ) );
    ( (float*)&q1 )[ i1 ] = sin( result.X / 2.0f );

    FQuat q2( 0, 0, 0, cos( result.Y / 2.0f ) );
    ( (float*)&q2 )[ i2 ] = sin( result.Y / 2.0f );

    FQuat q12 = q1 * q2;
    FVector v3n = vAxes[ ( i3 + 1 ) % 3 ];

    FVector v3n12 = q12.RotateVector( v3n );
    FVector v3nG = qG.RotateVector( v3n );

    result.Z = acos( FVector::DotProduct( v3n12, v3nG ) );
    FVector vc = FVector::CrossProduct( v3n12, v3nG );
    int sgn = FVector::DotProduct( vc, v3rot ) > 0 ? 1 : -1;
    result.Z *= sgn;

    return result * 180.0f / PI;
}
*/

FVector UVentuzBPFunctionLibrary::UE4_ToVentuzRotation( const FRotator& rotation, const LimitedEulerRotationOrder ventuzRotationOrder /*= EulerRotationOrder::ZYX */ )
{
    //return QuatToEuler( rotation.Quaternion(), ventuzRotationOrder );

    // this function currently only handles the XYZ euler order - to fix this we'll need to implement the QuatToEuler function above properly

    FMatrix tMatrix = FRotationMatrix( rotation );

    FMatrix adjustMatrix;
    adjustMatrix.SetIdentity();
    adjustMatrix.M[ 1 ][ 1 ] = 0;
    adjustMatrix.M[ 2 ][ 2 ] = 0;
    adjustMatrix.M[ 1 ][ 2 ] = 1;
    adjustMatrix.M[ 2 ][ 1 ] = -1;

    FMatrix rotationResult = FRotationMatrix( FRotator( 0, 0, 90 ) ) * tMatrix * adjustMatrix;

    FRotator rotator = rotationResult.Rotator();
    rotator.Yaw *= -1;
    rotator.Roll *= -1;

    return rotator.Euler();
}

FTransform UVentuzBPFunctionLibrary::VentuzToUE4_Transform( const FVector& position, const FVector& rotation, const EulerRotationOrder ventuzRotationOrder /*= EulerRotationOrder::ZYX*/, const FVector& scale /*= FVector(1, 1, 1) */ )
{
    FTransform transform;
    return FTransform( VentuzToUE4_Rotation( rotation, ventuzRotationOrder ), VentuzToUE4_Position( position ), VentuzToUE4_Scale( scale ) );
}

void UVentuzBPFunctionLibrary::UE4_ToVentuzTransform( const FTransform& transform, FVector& position, FVector& rotation, FVector& scale, const LimitedEulerRotationOrder ventuzRotationOrder /*= EulerRotationOrder::ZYX */ )
{
    position = UE4_ToVentuzPosition( transform.GetLocation() );
    scale = UE4_ToVentuzScale( transform.GetScale3D() );
    rotation = UE4_ToVentuzRotation( transform.Rotator(), ventuzRotationOrder );
}

bool UVentuzBPFunctionLibrary::IsVentuzConnected()
{
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
        return false;

    return plugin->IsConnected();
}

bool UVentuzBPFunctionLibrary::VentuzClusterClock( int64& frameCounter, float& time, int& frameRateNumerator, int& frameRateDenominator )
{
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if (!plugin)
        return false;

    auto clock = plugin->GetClusterClock();
    frameCounter = clock.clusterClock;
    time = clock.time;
    frameRateNumerator = clock.divident;
    frameRateDenominator = clock.divisor;

    return true;
}

void UVentuzBPFunctionLibrary::VentuzConnectionState( VentuzConnectionStatus& connectionStatus )
{
    FVentuzPlugin* plugin = GetVentuzPlugin();
    if ( !plugin )
    {
        connectionStatus = VentuzConnectionStatus::Disconnected;
        return;
    }

    connectionStatus = plugin->IsConnected() ? VentuzConnectionStatus::Connected : VentuzConnectionStatus::Disconnected;
}

