// Copyright (c) Microsoft Corporation
// 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::Handle;
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 Foundation { namespace Collections { 

  v8::Local<v8::Value> WrapIVectorChangedEventArgs(::Windows::Foundation::Collections::IVectorChangedEventArgs^ wintRtInstance);
  ::Windows::Foundation::Collections::IVectorChangedEventArgs^ UnwrapIVectorChangedEventArgs(Local<Value> value);
  
  v8::Local<v8::Value> WrapIPropertySet(::Windows::Foundation::Collections::IPropertySet^ wintRtInstance);
  ::Windows::Foundation::Collections::IPropertySet^ UnwrapIPropertySet(Local<Value> value);
  
  v8::Local<v8::Value> WrapPropertySet(::Windows::Foundation::Collections::PropertySet^ wintRtInstance);
  ::Windows::Foundation::Collections::PropertySet^ UnwrapPropertySet(Local<Value> value);
  


  static void InitCollectionChangeEnum(const Local<Object> exports)
  {
    HandleScope scope;
    
	Local<Object> enumObject = Nan::New<Object>();
    Nan::Set(exports, Nan::New<String>("CollectionChange").ToLocalChecked(), enumObject);
	Nan::Set(enumObject, Nan::New<String>("reset").ToLocalChecked(), Nan::New<Integer>(static_cast<int>(::Windows::Foundation::Collections::CollectionChange::Reset)));
	Nan::Set(enumObject, Nan::New<String>("itemInserted").ToLocalChecked(), Nan::New<Integer>(static_cast<int>(::Windows::Foundation::Collections::CollectionChange::ItemInserted)));
	Nan::Set(enumObject, Nan::New<String>("itemRemoved").ToLocalChecked(), Nan::New<Integer>(static_cast<int>(::Windows::Foundation::Collections::CollectionChange::ItemRemoved)));
	Nan::Set(enumObject, Nan::New<String>("itemChanged").ToLocalChecked(), Nan::New<Integer>(static_cast<int>(::Windows::Foundation::Collections::CollectionChange::ItemChanged)));
  }



  
  class IVectorChangedEventArgs : 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>("IVectorChangedEventArgs").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
                              
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("collectionChange").ToLocalChecked(), CollectionChangeGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("index").ToLocalChecked(), IndexGetter);
      
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();


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


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

  private:
    
    IVectorChangedEventArgs(::Windows::Foundation::Collections::IVectorChangedEventArgs^ 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];
          }

          info.GetReturnValue().Set(Nan::CallAsConstructor(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get()).ToLocalChecked());
	    	  return;
        }
        else
        {
          info.GetReturnValue().Set(Nan::CallAsConstructor(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr).ToLocalChecked());
		       return;
        }
      }
      
      ::Windows::Foundation::Collections::IVectorChangedEventArgs^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::IVectorChangedEventArgs^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Foundation::Collections::IVectorChangedEventArgs^) 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());

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

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


  



    static void CollectionChangeGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::IVectorChangedEventArgs^>(info.This()))
      {
        return;
      }

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

      try 
      {
        ::Windows::Foundation::Collections::CollectionChange result = wrapper->_instance->CollectionChange;
        info.GetReturnValue().Set(Nan::New<Integer>(static_cast<int>(result)));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void IndexGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::IVectorChangedEventArgs^>(info.This()))
      {
        return;
      }

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

      try 
      {
        unsigned int result = wrapper->_instance->Index;
        info.GetReturnValue().Set(Nan::New<Integer>(result));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    


  private:
    ::Windows::Foundation::Collections::IVectorChangedEventArgs^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapIVectorChangedEventArgs(::Windows::Foundation::Collections::IVectorChangedEventArgs^ wintRtInstance);
    friend ::Windows::Foundation::Collections::IVectorChangedEventArgs^ UnwrapIVectorChangedEventArgs(Local<Value> value);
  };
  Persistent<FunctionTemplate> IVectorChangedEventArgs::s_constructorTemplate;

  v8::Local<v8::Value> WrapIVectorChangedEventArgs(::Windows::Foundation::Collections::IVectorChangedEventArgs^ 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>(IVectorChangedEventArgs::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Foundation::Collections::IVectorChangedEventArgs^ UnwrapIVectorChangedEventArgs(Local<Value> value)
  {
     return IVectorChangedEventArgs::Unwrap<IVectorChangedEventArgs>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitIVectorChangedEventArgs(Local<Object> exports)
  {
    IVectorChangedEventArgs::Init(exports);
  }

  class IPropertySet : 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>("IPropertySet").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
                              
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();


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


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

  private:
    
    IPropertySet(::Windows::Foundation::Collections::IPropertySet^ 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];
          }

          info.GetReturnValue().Set(Nan::CallAsConstructor(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get()).ToLocalChecked());
	    	  return;
        }
        else
        {
          info.GetReturnValue().Set(Nan::CallAsConstructor(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr).ToLocalChecked());
		       return;
        }
      }
      
      ::Windows::Foundation::Collections::IPropertySet^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::IPropertySet^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Foundation::Collections::IPropertySet^) 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());

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

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


  





  private:
    ::Windows::Foundation::Collections::IPropertySet^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapIPropertySet(::Windows::Foundation::Collections::IPropertySet^ wintRtInstance);
    friend ::Windows::Foundation::Collections::IPropertySet^ UnwrapIPropertySet(Local<Value> value);
  };
  Persistent<FunctionTemplate> IPropertySet::s_constructorTemplate;

  v8::Local<v8::Value> WrapIPropertySet(::Windows::Foundation::Collections::IPropertySet^ 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>(IPropertySet::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Foundation::Collections::IPropertySet^ UnwrapIPropertySet(Local<Value> value)
  {
     return IPropertySet::Unwrap<IPropertySet>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitIPropertySet(Local<Object> exports)
  {
    IPropertySet::Init(exports);
  }

  class PropertySet : 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>("PropertySet").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
            
      Nan::SetPrototypeMethod(localRef, "lookup", Lookup);
      Nan::SetPrototypeMethod(localRef, "hasKey", HasKey);
      Nan::SetPrototypeMethod(localRef, "getView", GetView);
      Nan::SetPrototypeMethod(localRef, "insert", Insert);
      Nan::SetPrototypeMethod(localRef, "remove", Remove);
      Nan::SetPrototypeMethod(localRef, "clear", Clear);
      Nan::SetPrototypeMethod(localRef, "first", First);
      
                  
      Nan::SetPrototypeMethod(localRef,"addListener", AddListener);
      Nan::SetPrototypeMethod(localRef,"on", AddListener);
      Nan::SetPrototypeMethod(localRef,"removeListener", RemoveListener);
      Nan::SetPrototypeMethod(localRef, "off", RemoveListener);
            
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();


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


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

  private:
    
    PropertySet(::Windows::Foundation::Collections::PropertySet^ 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];
          }

          info.GetReturnValue().Set(Nan::CallAsConstructor(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get()).ToLocalChecked());
	    	  return;
        }
        else
        {
          info.GetReturnValue().Set(Nan::CallAsConstructor(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr).ToLocalChecked());
		       return;
        }
      }
      
      ::Windows::Foundation::Collections::PropertySet^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Foundation::Collections::PropertySet^) NodeRT::Utils::GetObjectInstance(info[0]);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 0)
      {
        try
        {
          winRtInstance = ref new ::Windows::Foundation::Collections::PropertySet();
        }
        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());

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

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


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

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
      {
        return;
      }

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

      if (info.Length() == 1
        && info[0]->IsString())
      {
        try
        {
          Platform::String^ arg0 = ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(info[0])));
          
          ::Platform::Object^ result;
          result = wrapper->_instance->Lookup(arg0);
          info.GetReturnValue().Set(CreateOpaqueWrapper(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 HasKey(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
      {
        return;
      }

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

      if (info.Length() == 1
        && info[0]->IsString())
      {
        try
        {
          Platform::String^ arg0 = ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(info[0])));
          
          bool result;
          result = wrapper->_instance->HasKey(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 GetView(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
      {
        return;
      }

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

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Foundation::Collections::IMapView<::Platform::String^, ::Platform::Object^>^ result;
          result = wrapper->_instance->GetView();
          info.GetReturnValue().Set(NodeRT::Collections::MapViewWrapper<::Platform::String^,::Platform::Object^>::CreateMapViewWrapper(result, 
            [](::Platform::String^ val) -> Local<Value> {
              return NodeRT::Utils::NewString(val->Data());
            },
            [](Local<Value> value) -> bool {
              return value->IsString();
            },
            [](Local<Value> value) -> ::Platform::String^ {
              return ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(value)));
            },
            [](::Platform::Object^ val) -> Local<Value> {
              return CreateOpaqueWrapper(val);
            }
          ));
          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 Insert(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
      {
        return;
      }

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

      if (info.Length() == 2
        && info[0]->IsString()
        && NodeRT::Utils::IsWinRtWrapperOf<::Platform::Object^>(info[1]))
      {
        try
        {
          Platform::String^ arg0 = ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(info[0])));
          ::Platform::Object^ arg1 = dynamic_cast<::Platform::Object^>(NodeRT::Utils::GetObjectInstance(info[1]));
          
          bool result;
          result = wrapper->_instance->Insert(arg0, arg1);
          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 Remove(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
      {
        return;
      }

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

      if (info.Length() == 1
        && info[0]->IsString())
      {
        try
        {
          Platform::String^ arg0 = ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(info[0])));
          
          wrapper->_instance->Remove(arg0);
          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 Clear(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
      {
        return;
      }

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

      if (info.Length() == 0)
      {
        try
        {
          wrapper->_instance->Clear();
          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 First(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
      {
        return;
      }

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

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Foundation::Collections::IIterator<::Windows::Foundation::Collections::IKeyValuePair<::Platform::String^, ::Platform::Object^>^>^ result;
          result = wrapper->_instance->First();
          info.GetReturnValue().Set(NodeRT::Collections::IteratorWrapper<::Windows::Foundation::Collections::IKeyValuePair<::Platform::String^, ::Platform::Object^>^>::CreateIteratorWrapper(result, 
            [](::Windows::Foundation::Collections::IKeyValuePair<::Platform::String^, ::Platform::Object^>^ val) -> Local<Value> {
              return NodeRT::Collections::KeyValuePairWrapper<::Platform::String^,::Platform::Object^>::CreateKeyValuePairWrapper(val, 
            [](::Platform::String^ val) -> Local<Value> {
              return NodeRT::Utils::NewString(val->Data());
            },
            [](::Platform::Object^ val) -> Local<Value> {
              return CreateOpaqueWrapper(val);
            }
          );
            }
          ));
          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 AddListener(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (info.Length() < 2 || !info[0]->IsString() || !info[1]->IsFunction())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"wrong arguments, expected arguments are eventName(string),callback(function)")));
		return;
      }

      String::Value eventName(info[0]);
      auto str = *eventName;
      
      Local<Function> callback = info[1].As<Function>();
      
      ::Windows::Foundation::EventRegistrationToken registrationToken;
      if (NodeRT::Utils::CaseInsenstiveEquals(L"mapChanged", str))
      {
        if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
        {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"The caller of this method isn't of the expected type or internal WinRt object was disposed")));
		  return;
        }
        PropertySet *wrapper = PropertySet::Unwrap<PropertySet>(info.This());
      
        try
        {
          Persistent<Object>* perstPtr = new Persistent<Object>();
          perstPtr->Reset(NodeRT::Utils::CreateCallbackObjectInDomain(callback));
          std::shared_ptr<Persistent<Object>> callbackObjPtr(perstPtr, 
            [] (Persistent<Object> *ptr ) {
              NodeUtils::Async::RunOnMain([ptr]() {
                ptr->Reset();
                delete ptr;
            });
          });

          registrationToken = wrapper->_instance->MapChanged::add(
            ref new ::Windows::Foundation::Collections::MapChangedEventHandler<::Platform::String^, ::Platform::Object^>(
            [callbackObjPtr](::Windows::Foundation::Collections::IObservableMap<::Platform::String^, ::Platform::Object^>^ arg0, ::Windows::Foundation::Collections::IMapChangedEventArgs<::Platform::String^>^ arg1) {
              NodeUtils::Async::RunOnMain([callbackObjPtr , arg0, arg1]() {
                TryCatch tryCatch;
              
                Local<Value> error;

                Local<Value> wrappedArg0 = NodeRT::Utils::CreateExternalWinRTObject("Windows.Foundation.Collections", "IObservableMap`2", arg0);
                Local<Value> wrappedArg1 = NodeRT::Utils::CreateExternalWinRTObject("Windows.Foundation.Collections", "IMapChangedEventArgs`1", arg1);

                if (tryCatch.HasCaught())
                {
                  error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
                }
                else 
                {
                  error = Undefined();
                }


                if (wrappedArg0.IsEmpty()) wrappedArg0 = Undefined();
                if (wrappedArg1.IsEmpty()) wrappedArg1 = Undefined();

                Local<Value> args[] = { wrappedArg0, wrappedArg1 };
                Local<Object> callbackObjLocalRef = Nan::New<Object>(*callbackObjPtr);
                NodeRT::Utils::CallCallbackInDomain(callbackObjLocalRef, _countof(args), args);
              });
            })
          );
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }

      }
      else 
      {
        Nan::ThrowError(Nan::Error(String::Concat(NodeRT::Utils::NewString(L"given event name isn't supported: "), info[0].As<String>())));
		return;
      }

      Local<Object> tokenMap = Nan::To<Object>(NodeRT::Utils::GetHiddenValue(callback, Nan::New<String>(REGISTRATION_TOKEN_MAP_PROPERTY_NAME).ToLocalChecked())).ToLocalChecked();
                
      if (tokenMap.IsEmpty() || Nan::Equals(tokenMap,Undefined()).FromMaybe(false))
      {
		  tokenMap = Nan::New<Object>();
		  NodeRT::Utils::SetHiddenValueWithObject(callback, Nan::New<String>(REGISTRATION_TOKEN_MAP_PROPERTY_NAME).ToLocalChecked(), tokenMap);
      }

      Nan::Set(tokenMap, info[1], CreateOpaqueWrapper(::Windows::Foundation::PropertyValue::CreateInt64(registrationToken.Value)));
    }

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

      if (info.Length() < 2 || !info[0]->IsString() || !info[1]->IsFunction())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"wrong arguments, expected a string and a callback")));
        return;
      }

      String::Value eventName(info[0]);
      auto str = *eventName;

      if ((NodeRT::Utils::CaseInsenstiveEquals(L"mapChanged", str)))
      {
        Nan::ThrowError(Nan::Error(String::Concat(NodeRT::Utils::NewString(L"given event name isn't supported: "), info[0].As<String>())));
        return;
      }

      Local<Function> callback = info[1].As<Function>();
      Local<Value> tokenMap = NodeRT::Utils::GetHiddenValue(callback, Nan::New<String>(REGISTRATION_TOKEN_MAP_PROPERTY_NAME).ToLocalChecked());
                
      if (tokenMap.IsEmpty() || Nan::Equals(tokenMap, Undefined()).FromMaybe(false))
      {
        return;
      }

      Local<Value> opaqueWrapperObj =  Nan::Get(Nan::To<Object>(tokenMap).ToLocalChecked(), info[1]).ToLocalChecked();

      if (opaqueWrapperObj.IsEmpty() || Nan::Equals(opaqueWrapperObj,Undefined()).FromMaybe(false))
      {
        return;
      }

      OpaqueWrapper *opaqueWrapper = OpaqueWrapper::Unwrap<OpaqueWrapper>(opaqueWrapperObj.As<Object>());
            
      long long tokenValue = (long long) opaqueWrapper->GetObjectInstance();
      ::Windows::Foundation::EventRegistrationToken registrationToken;
      registrationToken.Value = tokenValue;
        
      try 
      {
        if (NodeRT::Utils::CaseInsenstiveEquals(L"mapChanged", str))
        {
          if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::PropertySet^>(info.This()))
          {
            Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"The caller of this method isn't of the expected type or internal WinRt object was disposed")));
            return;
          }
          PropertySet *wrapper = PropertySet::Unwrap<PropertySet>(info.This());
          wrapper->_instance->MapChanged::remove(registrationToken);
        }
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }

      Nan::Delete(Nan::To<Object>(tokenMap).ToLocalChecked(), Nan::To<String>(info[0]).ToLocalChecked());
    }
  private:
    ::Windows::Foundation::Collections::PropertySet^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapPropertySet(::Windows::Foundation::Collections::PropertySet^ wintRtInstance);
    friend ::Windows::Foundation::Collections::PropertySet^ UnwrapPropertySet(Local<Value> value);
  };
  Persistent<FunctionTemplate> PropertySet::s_constructorTemplate;

  v8::Local<v8::Value> WrapPropertySet(::Windows::Foundation::Collections::PropertySet^ 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>(PropertySet::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Foundation::Collections::PropertySet^ UnwrapPropertySet(Local<Value> value)
  {
     return PropertySet::Unwrap<PropertySet>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitPropertySet(Local<Object> exports)
  {
    PropertySet::Init(exports);
  }

} } } } 

NAN_MODULE_INIT(init)
{
  if (FAILED(CoInitializeEx(nullptr, COINIT_MULTITHREADED)))
  {
    Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"error in CoInitializeEx()")));
    return;
  }
  
  NodeRT::Windows::Foundation::Collections::InitCollectionChangeEnum(target);
  NodeRT::Windows::Foundation::Collections::InitIVectorChangedEventArgs(target);
  NodeRT::Windows::Foundation::Collections::InitIPropertySet(target);
  NodeRT::Windows::Foundation::Collections::InitPropertySet(target);

  NodeRT::Utils::RegisterNameSpace("Windows.Foundation.Collections", target);
}


NODE_MODULE(binding, init)