// Copyright (c) The NodeRT Contributors
// All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the ""License""); you may
// not use this file except in compliance with the License. You may obtain a
// copy of the License at http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED ON AN  *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS
// OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY
// IMPLIED WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
//
// See the Apache Version 2.0 License for specific language governing permissions
// and limitations under the License.

// TODO: Verify that this is is still needed..
#define NTDDI_VERSION 0x06010000

#include <v8.h>
#include "nan.h"
#include <string>
#include <ppltasks.h>
#include "CollectionsConverter.h"
#include "CollectionsWrap.h"
#include "node-async.h"
#include "NodeRtUtils.h"
#include "OpaqueWrapper.h"
#include "WrapperBase.h"

#using <Windows.WinMD>

// this undefs fixes the issues of compiling Windows.Data.Json, Windows.Storag.FileProperties, and Windows.Stroage.Search
// Some of the node header files brings windows definitions with the same names as some of the WinRT methods
#undef DocumentProperties
#undef GetObject
#undef CreateEvent
#undef FindText
#undef SendMessage

const char* REGISTRATION_TOKEN_MAP_PROPERTY_NAME = "__registrationTokenMap__";

using v8::Array;
using v8::String;
using v8::Value;
using v8::Boolean;
using v8::Integer;
using v8::FunctionTemplate;
using v8::Object;
using v8::Local;
using v8::Function;
using v8::Date;
using v8::Number;
using v8::PropertyAttribute;
using v8::Primitive;
using Nan::HandleScope;
using Nan::Persistent;
using Nan::Undefined;
using Nan::True;
using Nan::False;
using Nan::Null;
using Nan::MaybeLocal;
using Nan::EscapableHandleScope;
using Nan::HandleScope;
using Nan::TryCatch;
using namespace concurrency;

namespace NodeRT { namespace Windows { namespace Media { namespace FaceAnalysis { 
  v8::Local<v8::Value> WrapDetectedFace(::Windows::Media::FaceAnalysis::DetectedFace^ wintRtInstance);
  ::Windows::Media::FaceAnalysis::DetectedFace^ UnwrapDetectedFace(Local<Value> value);
  
  v8::Local<v8::Value> WrapFaceDetector(::Windows::Media::FaceAnalysis::FaceDetector^ wintRtInstance);
  ::Windows::Media::FaceAnalysis::FaceDetector^ UnwrapFaceDetector(Local<Value> value);
  
  v8::Local<v8::Value> WrapFaceTracker(::Windows::Media::FaceAnalysis::FaceTracker^ wintRtInstance);
  ::Windows::Media::FaceAnalysis::FaceTracker^ UnwrapFaceTracker(Local<Value> value);
  




  static bool IsBitmapBoundsJsObject(Local<Value> value) {
    if (!value->IsObject()) {
      return false;
    }

    Local<String> symbol;
    Local<Object> obj = Nan::To<Object>(value).ToLocalChecked();

    symbol = Nan::New<String>("x").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      if (!Nan::Get(obj,symbol).ToLocalChecked()->IsUint32()) {
        return false;
      }
    }
    
    symbol = Nan::New<String>("y").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      if (!Nan::Get(obj,symbol).ToLocalChecked()->IsUint32()) {
        return false;
      }
    }
    
    symbol = Nan::New<String>("width").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      if (!Nan::Get(obj,symbol).ToLocalChecked()->IsUint32()) {
        return false;
      }
    }
    
    symbol = Nan::New<String>("height").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      if (!Nan::Get(obj,symbol).ToLocalChecked()->IsUint32()) {
        return false;
      }
    }
    
    return true;
  }

  ::Windows::Graphics::Imaging::BitmapBounds BitmapBoundsFromJsObject(Local<Value> value) {
    HandleScope scope;
    ::Windows::Graphics::Imaging::BitmapBounds returnValue;

    if (!value->IsObject()) {
      Nan::ThrowError(Nan::TypeError(NodeRT::Utils::NewString(L"Unexpected type, expected an object")));
      return returnValue;
    }

    Local<Object> obj = Nan::To<Object>(value).ToLocalChecked();
    Local<String> symbol;

    symbol = Nan::New<String>("x").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      returnValue.X = static_cast<unsigned int>(Nan::To<uint32_t>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0));
    }
    
    symbol = Nan::New<String>("y").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      returnValue.Y = static_cast<unsigned int>(Nan::To<uint32_t>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0));
    }
    
    symbol = Nan::New<String>("width").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      returnValue.Width = static_cast<unsigned int>(Nan::To<uint32_t>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0));
    }
    
    symbol = Nan::New<String>("height").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      returnValue.Height = static_cast<unsigned int>(Nan::To<uint32_t>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0));
    }
    
    return returnValue;
  }

  Local<Value> BitmapBoundsToJsObject(::Windows::Graphics::Imaging::BitmapBounds value) {
    EscapableHandleScope scope;

    Local<Object> obj = Nan::New<Object>();

    Nan::Set(obj, Nan::New<String>("x").ToLocalChecked(), Nan::New<Integer>(value.X));
    Nan::Set(obj, Nan::New<String>("y").ToLocalChecked(), Nan::New<Integer>(value.Y));
    Nan::Set(obj, Nan::New<String>("width").ToLocalChecked(), Nan::New<Integer>(value.Width));
    Nan::Set(obj, Nan::New<String>("height").ToLocalChecked(), Nan::New<Integer>(value.Height));

    return scope.Escape(obj);
  }
  static bool IsBitmapSizeJsObject(Local<Value> value) {
    if (!value->IsObject()) {
      return false;
    }

    Local<String> symbol;
    Local<Object> obj = Nan::To<Object>(value).ToLocalChecked();

    symbol = Nan::New<String>("width").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      if (!Nan::Get(obj,symbol).ToLocalChecked()->IsUint32()) {
        return false;
      }
    }
    
    symbol = Nan::New<String>("height").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      if (!Nan::Get(obj,symbol).ToLocalChecked()->IsUint32()) {
        return false;
      }
    }
    
    return true;
  }

  ::Windows::Graphics::Imaging::BitmapSize BitmapSizeFromJsObject(Local<Value> value) {
    HandleScope scope;
    ::Windows::Graphics::Imaging::BitmapSize returnValue;

    if (!value->IsObject()) {
      Nan::ThrowError(Nan::TypeError(NodeRT::Utils::NewString(L"Unexpected type, expected an object")));
      return returnValue;
    }

    Local<Object> obj = Nan::To<Object>(value).ToLocalChecked();
    Local<String> symbol;

    symbol = Nan::New<String>("width").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      returnValue.Width = static_cast<unsigned int>(Nan::To<uint32_t>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0));
    }
    
    symbol = Nan::New<String>("height").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      returnValue.Height = static_cast<unsigned int>(Nan::To<uint32_t>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0));
    }
    
    return returnValue;
  }

  Local<Value> BitmapSizeToJsObject(::Windows::Graphics::Imaging::BitmapSize value) {
    EscapableHandleScope scope;

    Local<Object> obj = Nan::New<Object>();

    Nan::Set(obj, Nan::New<String>("width").ToLocalChecked(), Nan::New<Integer>(value.Width));
    Nan::Set(obj, Nan::New<String>("height").ToLocalChecked(), Nan::New<Integer>(value.Height));

    return scope.Escape(obj);
  }

  class DetectedFace : public WrapperBase {
    public:
      
      static void Init(const Local<Object> exports) {
        HandleScope scope;

        Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
        s_constructorTemplate.Reset(localRef);
        localRef->SetClassName(Nan::New<String>("DetectedFace").ToLocalChecked());
        localRef->InstanceTemplate()->SetInternalFieldCount(1);





          
            Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("faceBox").ToLocalChecked(), FaceBoxGetter);

        Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
        Nan::SetMethod(constructor, "castFrom", CastFrom);



        Nan::Set(exports, Nan::New<String>("DetectedFace").ToLocalChecked(), constructor);
      }

      virtual ::Platform::Object^ GetObjectInstance() const override {
        return _instance;
      }

    private:

      DetectedFace(::Windows::Media::FaceAnalysis::DetectedFace^ instance) {
        _instance = instance;
      }

      
    static void New(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This())) {
        if (info.Length() > 0) {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++) {
            argsPtr[i] = info[i];
          }

          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
          if (res.IsEmpty()) {
            return;
          }

          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        } else {
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);

          if (res.IsEmpty()) {
            return;
          }

          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }

      ::Windows::Media::FaceAnalysis::DetectedFace^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::DetectedFace^>(info[0])) {
        try {
          winRtInstance = (::Windows::Media::FaceAnalysis::DetectedFace^) NodeRT::Utils::GetObjectInstance(info[0]);
        } catch (Platform::Exception ^exception) {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
        return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      DetectedFace *wrapperInstance = new DetectedFace(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


      
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;
      if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::DetectedFace^>(info[0])) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
        return;
      }

      ::Windows::Media::FaceAnalysis::DetectedFace^ winRtInstance;
      try {
        winRtInstance = (::Windows::Media::FaceAnalysis::DetectedFace^) NodeRT::Utils::GetObjectInstance(info[0]);
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }

      info.GetReturnValue().Set(WrapDetectedFace(winRtInstance));
    }





    static void FaceBoxGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::DetectedFace^>(info.This())) {
        return;
      }

      DetectedFace *wrapper = DetectedFace::Unwrap<DetectedFace>(info.This());

      try  {
        ::Windows::Graphics::Imaging::BitmapBounds result = wrapper->_instance->FaceBox;
        info.GetReturnValue().Set(BitmapBoundsToJsObject(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      


    private:
      ::Windows::Media::FaceAnalysis::DetectedFace^ _instance;
      static Persistent<FunctionTemplate> s_constructorTemplate;

      friend v8::Local<v8::Value> WrapDetectedFace(::Windows::Media::FaceAnalysis::DetectedFace^ wintRtInstance);
      friend ::Windows::Media::FaceAnalysis::DetectedFace^ UnwrapDetectedFace(Local<Value> value);
  };

  Persistent<FunctionTemplate> DetectedFace::s_constructorTemplate;

  v8::Local<v8::Value> WrapDetectedFace(::Windows::Media::FaceAnalysis::DetectedFace^ winRtInstance) {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr) {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(DetectedFace::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::FaceAnalysis::DetectedFace^ UnwrapDetectedFace(Local<Value> value) {
     return DetectedFace::Unwrap<DetectedFace>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitDetectedFace(Local<Object> exports) {
    DetectedFace::Init(exports);
  }

  class FaceDetector : public WrapperBase {
    public:
      
      static void Init(const Local<Object> exports) {
        HandleScope scope;

        Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
        s_constructorTemplate.Reset(localRef);
        localRef->SetClassName(Nan::New<String>("FaceDetector").ToLocalChecked());
        localRef->InstanceTemplate()->SetInternalFieldCount(1);

        Local<Function> func;
        Local<FunctionTemplate> funcTemplate;


          
            Nan::SetPrototypeMethod(localRef, "detectFacesAsync", DetectFacesAsync);
          


          
            Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("minDetectableFaceSize").ToLocalChecked(), MinDetectableFaceSizeGetter, MinDetectableFaceSizeSetter);
            Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("maxDetectableFaceSize").ToLocalChecked(), MaxDetectableFaceSizeGetter, MaxDetectableFaceSizeSetter);

        Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
        Nan::SetMethod(constructor, "castFrom", CastFrom);

        Nan::SetMethod(constructor, "getSupportedBitmapPixelFormats", GetSupportedBitmapPixelFormats);
        Nan::SetMethod(constructor, "isBitmapPixelFormatSupported", IsBitmapPixelFormatSupported);
        func = Nan::GetFunction(Nan::New<FunctionTemplate>(CreateAsync)).ToLocalChecked();
        Nan::Set(constructor, Nan::New<String>("createAsync").ToLocalChecked(), func);
        Nan::SetAccessor(constructor, Nan::New<String>("isSupported").ToLocalChecked(), IsSupportedGetter);


        Nan::Set(exports, Nan::New<String>("FaceDetector").ToLocalChecked(), constructor);
      }

      virtual ::Platform::Object^ GetObjectInstance() const override {
        return _instance;
      }

    private:

      FaceDetector(::Windows::Media::FaceAnalysis::FaceDetector^ instance) {
        _instance = instance;
      }

      
    static void New(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This())) {
        if (info.Length() > 0) {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++) {
            argsPtr[i] = info[i];
          }

          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
          if (res.IsEmpty()) {
            return;
          }

          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        } else {
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);

          if (res.IsEmpty()) {
            return;
          }

          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }

      ::Windows::Media::FaceAnalysis::FaceDetector^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceDetector^>(info[0])) {
        try {
          winRtInstance = (::Windows::Media::FaceAnalysis::FaceDetector^) NodeRT::Utils::GetObjectInstance(info[0]);
        } catch (Platform::Exception ^exception) {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
        return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      FaceDetector *wrapperInstance = new FaceDetector(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


      
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;
      if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceDetector^>(info[0])) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
        return;
      }

      ::Windows::Media::FaceAnalysis::FaceDetector^ winRtInstance;
      try {
        winRtInstance = (::Windows::Media::FaceAnalysis::FaceDetector^) NodeRT::Utils::GetObjectInstance(info[0]);
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }

      info.GetReturnValue().Set(WrapFaceDetector(winRtInstance));
    }

    static void DetectFacesAsync(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceDetector^>(info.This())) {
        return;
      }

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction()) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
        return;
      }

      FaceDetector *wrapper = FaceDetector::Unwrap<FaceDetector>(info.This());

      ::Windows::Foundation::IAsyncOperation<::Windows::Foundation::Collections::IVector<::Windows::Media::FaceAnalysis::DetectedFace^>^>^ op;


      if (info.Length() == 2
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Graphics::Imaging::SoftwareBitmap^>(info[0]))
      {
        try
        {
          ::Windows::Graphics::Imaging::SoftwareBitmap^ arg0 = dynamic_cast<::Windows::Graphics::Imaging::SoftwareBitmap^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          op = wrapper->_instance->DetectFacesAsync(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 3
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Graphics::Imaging::SoftwareBitmap^>(info[0])
        && IsBitmapBoundsJsObject(info[1]))
      {
        try
        {
          ::Windows::Graphics::Imaging::SoftwareBitmap^ arg0 = dynamic_cast<::Windows::Graphics::Imaging::SoftwareBitmap^>(NodeRT::Utils::GetObjectInstance(info[0]));
          ::Windows::Graphics::Imaging::BitmapBounds arg1 = BitmapBoundsFromJsObject(info[1]);
          
          op = wrapper->_instance->DetectFacesAsync(arg0,arg1);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }

      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Foundation::Collections::IVector<::Windows::Media::FaceAnalysis::DetectedFace^>^> t) {
        try {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {


            Local<Value> error;
            Local<Value> arg1;
            {
              TryCatch tryCatch;
              arg1 = NodeRT::Collections::VectorWrapper<::Windows::Media::FaceAnalysis::DetectedFace^>::CreateVectorWrapper(result, 
            [](::Windows::Media::FaceAnalysis::DetectedFace^ val) -> Local<Value> {
              return WrapDetectedFace(val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::DetectedFace^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::FaceAnalysis::DetectedFace^ {
              return UnwrapDetectedFace(value);
            }
          );
              if (tryCatch.HasCaught())
              {
                error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
              }
              else
              {
                error = Undefined();
              }
              if (arg1.IsEmpty()) arg1 = Undefined();
            }
            Local<Value> args[] = {error, arg1};


            invokeCallback(_countof(args), args);
          });
        } catch (Platform::Exception^ exception) {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);

            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }
      });
    }



    static void CreateAsync(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction()) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
        return;
      }

      ::Windows::Foundation::IAsyncOperation<::Windows::Media::FaceAnalysis::FaceDetector^>^ op;


      if (info.Length() == 1)
      {
        try
        {
          op = ::Windows::Media::FaceAnalysis::FaceDetector::CreateAsync();
        } catch (Platform::Exception ^exception) {
            NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
            return;
        }
      }
 else {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }

      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Media::FaceAnalysis::FaceDetector^> t)
      {
        try {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {


            Local<Value> error;
            Local<Value> arg1;
            {
              TryCatch tryCatch;
              arg1 = WrapFaceDetector(result);
              if (tryCatch.HasCaught())
              {
                error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
              }
              else
              {
                error = Undefined();
              }
              if (arg1.IsEmpty()) arg1 = Undefined();
            }
            Local<Value> args[] = {error, arg1};


            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {

            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);

            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }
      });
    }


    static void GetSupportedBitmapPixelFormats(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Foundation::Collections::IVectorView<::Windows::Graphics::Imaging::BitmapPixelFormat>^ result;
          result = ::Windows::Media::FaceAnalysis::FaceDetector::GetSupportedBitmapPixelFormats();
          info.GetReturnValue().Set(NodeRT::Collections::VectorViewWrapper<::Windows::Graphics::Imaging::BitmapPixelFormat>::CreateVectorViewWrapper(result, 
            [](::Windows::Graphics::Imaging::BitmapPixelFormat val) -> Local<Value> {
              return Nan::New<Integer>(static_cast<int>(val));
            },
            [](Local<Value> value) -> bool {
              return value->IsInt32();
            },
            [](Local<Value> value) -> ::Windows::Graphics::Imaging::BitmapPixelFormat {
              return static_cast<::Windows::Graphics::Imaging::BitmapPixelFormat>(Nan::To<int32_t>(value).FromMaybe(0));
            }
          ));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else  {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void IsBitmapPixelFormatSupported(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      if (info.Length() == 1
        && info[0]->IsInt32())
      {
        try
        {
          ::Windows::Graphics::Imaging::BitmapPixelFormat arg0 = static_cast<::Windows::Graphics::Imaging::BitmapPixelFormat>(Nan::To<int32_t>(info[0]).FromMaybe(0));
          
          bool result;
          result = ::Windows::Media::FaceAnalysis::FaceDetector::IsBitmapPixelFormatSupported(arg0);
          info.GetReturnValue().Set(Nan::New<Boolean>(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else  {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void MinDetectableFaceSizeGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceDetector^>(info.This())) {
        return;
      }

      FaceDetector *wrapper = FaceDetector::Unwrap<FaceDetector>(info.This());

      try  {
        ::Windows::Graphics::Imaging::BitmapSize result = wrapper->_instance->MinDetectableFaceSize;
        info.GetReturnValue().Set(BitmapSizeToJsObject(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      
    static void MinDetectableFaceSizeSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info) {
      HandleScope scope;

      if (!IsBitmapSizeJsObject(value)) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceDetector^>(info.This())) {
        return;
      }

      FaceDetector *wrapper = FaceDetector::Unwrap<FaceDetector>(info.This());

      try {

        ::Windows::Graphics::Imaging::BitmapSize winRtValue = BitmapSizeFromJsObject(value);

        wrapper->_instance->MinDetectableFaceSize = winRtValue;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
      
    static void MaxDetectableFaceSizeGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceDetector^>(info.This())) {
        return;
      }

      FaceDetector *wrapper = FaceDetector::Unwrap<FaceDetector>(info.This());

      try  {
        ::Windows::Graphics::Imaging::BitmapSize result = wrapper->_instance->MaxDetectableFaceSize;
        info.GetReturnValue().Set(BitmapSizeToJsObject(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      
    static void MaxDetectableFaceSizeSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info) {
      HandleScope scope;

      if (!IsBitmapSizeJsObject(value)) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceDetector^>(info.This())) {
        return;
      }

      FaceDetector *wrapper = FaceDetector::Unwrap<FaceDetector>(info.This());

      try {

        ::Windows::Graphics::Imaging::BitmapSize winRtValue = BitmapSizeFromJsObject(value);

        wrapper->_instance->MaxDetectableFaceSize = winRtValue;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
      


    static void IsSupportedGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      try
      {
        bool result = ::Windows::Media::FaceAnalysis::FaceDetector::IsSupported;
        info.GetReturnValue().Set(Nan::New<Boolean>(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      

    private:
      ::Windows::Media::FaceAnalysis::FaceDetector^ _instance;
      static Persistent<FunctionTemplate> s_constructorTemplate;

      friend v8::Local<v8::Value> WrapFaceDetector(::Windows::Media::FaceAnalysis::FaceDetector^ wintRtInstance);
      friend ::Windows::Media::FaceAnalysis::FaceDetector^ UnwrapFaceDetector(Local<Value> value);
  };

  Persistent<FunctionTemplate> FaceDetector::s_constructorTemplate;

  v8::Local<v8::Value> WrapFaceDetector(::Windows::Media::FaceAnalysis::FaceDetector^ winRtInstance) {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr) {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(FaceDetector::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::FaceAnalysis::FaceDetector^ UnwrapFaceDetector(Local<Value> value) {
     return FaceDetector::Unwrap<FaceDetector>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitFaceDetector(Local<Object> exports) {
    FaceDetector::Init(exports);
  }

  class FaceTracker : public WrapperBase {
    public:
      
      static void Init(const Local<Object> exports) {
        HandleScope scope;

        Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
        s_constructorTemplate.Reset(localRef);
        localRef->SetClassName(Nan::New<String>("FaceTracker").ToLocalChecked());
        localRef->InstanceTemplate()->SetInternalFieldCount(1);

        Local<Function> func;
        Local<FunctionTemplate> funcTemplate;


          
            Nan::SetPrototypeMethod(localRef, "processNextFrameAsync", ProcessNextFrameAsync);
          


          
            Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("minDetectableFaceSize").ToLocalChecked(), MinDetectableFaceSizeGetter, MinDetectableFaceSizeSetter);
            Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("maxDetectableFaceSize").ToLocalChecked(), MaxDetectableFaceSizeGetter, MaxDetectableFaceSizeSetter);

        Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
        Nan::SetMethod(constructor, "castFrom", CastFrom);

        Nan::SetMethod(constructor, "getSupportedBitmapPixelFormats", GetSupportedBitmapPixelFormats);
        Nan::SetMethod(constructor, "isBitmapPixelFormatSupported", IsBitmapPixelFormatSupported);
        func = Nan::GetFunction(Nan::New<FunctionTemplate>(CreateAsync)).ToLocalChecked();
        Nan::Set(constructor, Nan::New<String>("createAsync").ToLocalChecked(), func);
        Nan::SetAccessor(constructor, Nan::New<String>("isSupported").ToLocalChecked(), IsSupportedGetter);


        Nan::Set(exports, Nan::New<String>("FaceTracker").ToLocalChecked(), constructor);
      }

      virtual ::Platform::Object^ GetObjectInstance() const override {
        return _instance;
      }

    private:

      FaceTracker(::Windows::Media::FaceAnalysis::FaceTracker^ instance) {
        _instance = instance;
      }

      
    static void New(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This())) {
        if (info.Length() > 0) {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++) {
            argsPtr[i] = info[i];
          }

          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
          if (res.IsEmpty()) {
            return;
          }

          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        } else {
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);

          if (res.IsEmpty()) {
            return;
          }

          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }

      ::Windows::Media::FaceAnalysis::FaceTracker^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceTracker^>(info[0])) {
        try {
          winRtInstance = (::Windows::Media::FaceAnalysis::FaceTracker^) NodeRT::Utils::GetObjectInstance(info[0]);
        } catch (Platform::Exception ^exception) {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
        return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      FaceTracker *wrapperInstance = new FaceTracker(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


      
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;
      if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceTracker^>(info[0])) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
        return;
      }

      ::Windows::Media::FaceAnalysis::FaceTracker^ winRtInstance;
      try {
        winRtInstance = (::Windows::Media::FaceAnalysis::FaceTracker^) NodeRT::Utils::GetObjectInstance(info[0]);
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }

      info.GetReturnValue().Set(WrapFaceTracker(winRtInstance));
    }

    static void ProcessNextFrameAsync(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceTracker^>(info.This())) {
        return;
      }

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction()) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
        return;
      }

      FaceTracker *wrapper = FaceTracker::Unwrap<FaceTracker>(info.This());

      ::Windows::Foundation::IAsyncOperation<::Windows::Foundation::Collections::IVector<::Windows::Media::FaceAnalysis::DetectedFace^>^>^ op;


      if (info.Length() == 2
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::VideoFrame^>(info[0]))
      {
        try
        {
          ::Windows::Media::VideoFrame^ arg0 = dynamic_cast<::Windows::Media::VideoFrame^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          op = wrapper->_instance->ProcessNextFrameAsync(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }

      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Foundation::Collections::IVector<::Windows::Media::FaceAnalysis::DetectedFace^>^> t) {
        try {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {


            Local<Value> error;
            Local<Value> arg1;
            {
              TryCatch tryCatch;
              arg1 = NodeRT::Collections::VectorWrapper<::Windows::Media::FaceAnalysis::DetectedFace^>::CreateVectorWrapper(result, 
            [](::Windows::Media::FaceAnalysis::DetectedFace^ val) -> Local<Value> {
              return WrapDetectedFace(val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::DetectedFace^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::FaceAnalysis::DetectedFace^ {
              return UnwrapDetectedFace(value);
            }
          );
              if (tryCatch.HasCaught())
              {
                error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
              }
              else
              {
                error = Undefined();
              }
              if (arg1.IsEmpty()) arg1 = Undefined();
            }
            Local<Value> args[] = {error, arg1};


            invokeCallback(_countof(args), args);
          });
        } catch (Platform::Exception^ exception) {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);

            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }
      });
    }



    static void CreateAsync(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction()) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
        return;
      }

      ::Windows::Foundation::IAsyncOperation<::Windows::Media::FaceAnalysis::FaceTracker^>^ op;


      if (info.Length() == 1)
      {
        try
        {
          op = ::Windows::Media::FaceAnalysis::FaceTracker::CreateAsync();
        } catch (Platform::Exception ^exception) {
            NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
            return;
        }
      }
 else {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }

      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Media::FaceAnalysis::FaceTracker^> t)
      {
        try {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {


            Local<Value> error;
            Local<Value> arg1;
            {
              TryCatch tryCatch;
              arg1 = WrapFaceTracker(result);
              if (tryCatch.HasCaught())
              {
                error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
              }
              else
              {
                error = Undefined();
              }
              if (arg1.IsEmpty()) arg1 = Undefined();
            }
            Local<Value> args[] = {error, arg1};


            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {

            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);

            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }
      });
    }


    static void GetSupportedBitmapPixelFormats(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Foundation::Collections::IVectorView<::Windows::Graphics::Imaging::BitmapPixelFormat>^ result;
          result = ::Windows::Media::FaceAnalysis::FaceTracker::GetSupportedBitmapPixelFormats();
          info.GetReturnValue().Set(NodeRT::Collections::VectorViewWrapper<::Windows::Graphics::Imaging::BitmapPixelFormat>::CreateVectorViewWrapper(result, 
            [](::Windows::Graphics::Imaging::BitmapPixelFormat val) -> Local<Value> {
              return Nan::New<Integer>(static_cast<int>(val));
            },
            [](Local<Value> value) -> bool {
              return value->IsInt32();
            },
            [](Local<Value> value) -> ::Windows::Graphics::Imaging::BitmapPixelFormat {
              return static_cast<::Windows::Graphics::Imaging::BitmapPixelFormat>(Nan::To<int32_t>(value).FromMaybe(0));
            }
          ));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else  {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void IsBitmapPixelFormatSupported(Nan::NAN_METHOD_ARGS_TYPE info) {
      HandleScope scope;

      if (info.Length() == 1
        && info[0]->IsInt32())
      {
        try
        {
          ::Windows::Graphics::Imaging::BitmapPixelFormat arg0 = static_cast<::Windows::Graphics::Imaging::BitmapPixelFormat>(Nan::To<int32_t>(info[0]).FromMaybe(0));
          
          bool result;
          result = ::Windows::Media::FaceAnalysis::FaceTracker::IsBitmapPixelFormatSupported(arg0);
          info.GetReturnValue().Set(Nan::New<Boolean>(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
 else  {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void MinDetectableFaceSizeGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceTracker^>(info.This())) {
        return;
      }

      FaceTracker *wrapper = FaceTracker::Unwrap<FaceTracker>(info.This());

      try  {
        ::Windows::Graphics::Imaging::BitmapSize result = wrapper->_instance->MinDetectableFaceSize;
        info.GetReturnValue().Set(BitmapSizeToJsObject(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      
    static void MinDetectableFaceSizeSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info) {
      HandleScope scope;

      if (!IsBitmapSizeJsObject(value)) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceTracker^>(info.This())) {
        return;
      }

      FaceTracker *wrapper = FaceTracker::Unwrap<FaceTracker>(info.This());

      try {

        ::Windows::Graphics::Imaging::BitmapSize winRtValue = BitmapSizeFromJsObject(value);

        wrapper->_instance->MinDetectableFaceSize = winRtValue;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
      
    static void MaxDetectableFaceSizeGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceTracker^>(info.This())) {
        return;
      }

      FaceTracker *wrapper = FaceTracker::Unwrap<FaceTracker>(info.This());

      try  {
        ::Windows::Graphics::Imaging::BitmapSize result = wrapper->_instance->MaxDetectableFaceSize;
        info.GetReturnValue().Set(BitmapSizeToJsObject(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      
    static void MaxDetectableFaceSizeSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info) {
      HandleScope scope;

      if (!IsBitmapSizeJsObject(value)) {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::FaceAnalysis::FaceTracker^>(info.This())) {
        return;
      }

      FaceTracker *wrapper = FaceTracker::Unwrap<FaceTracker>(info.This());

      try {

        ::Windows::Graphics::Imaging::BitmapSize winRtValue = BitmapSizeFromJsObject(value);

        wrapper->_instance->MaxDetectableFaceSize = winRtValue;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
      


    static void IsSupportedGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      try
      {
        bool result = ::Windows::Media::FaceAnalysis::FaceTracker::IsSupported;
        info.GetReturnValue().Set(Nan::New<Boolean>(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      

    private:
      ::Windows::Media::FaceAnalysis::FaceTracker^ _instance;
      static Persistent<FunctionTemplate> s_constructorTemplate;

      friend v8::Local<v8::Value> WrapFaceTracker(::Windows::Media::FaceAnalysis::FaceTracker^ wintRtInstance);
      friend ::Windows::Media::FaceAnalysis::FaceTracker^ UnwrapFaceTracker(Local<Value> value);
  };

  Persistent<FunctionTemplate> FaceTracker::s_constructorTemplate;

  v8::Local<v8::Value> WrapFaceTracker(::Windows::Media::FaceAnalysis::FaceTracker^ winRtInstance) {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr) {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(FaceTracker::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::FaceAnalysis::FaceTracker^ UnwrapFaceTracker(Local<Value> value) {
     return FaceTracker::Unwrap<FaceTracker>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitFaceTracker(Local<Object> exports) {
    FaceTracker::Init(exports);
  }


} } } } 

NAN_MODULE_INIT(init) {
  // We ignore failures for now since it probably means that
  // the initialization already happened for STA, and that's cool

  CoInitializeEx(nullptr, COINIT_MULTITHREADED);

  /*
  if (FAILED(CoInitializeEx(nullptr, COINIT_MULTITHREADED))) {
    Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"error in CoInitializeEx()")));
    return;
  }
  */

      NodeRT::Windows::Media::FaceAnalysis::InitDetectedFace(target);
      NodeRT::Windows::Media::FaceAnalysis::InitFaceDetector(target);
      NodeRT::Windows::Media::FaceAnalysis::InitFaceTracker(target);


  NodeRT::Utils::RegisterNameSpace("Windows.Media.FaceAnalysis", target);
}



NODE_MODULE(binding, init)