// 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 UI { namespace Xaml { namespace Resources { 

  v8::Local<v8::Value> WrapCustomXamlResourceLoader(::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ wintRtInstance);
  ::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ UnwrapCustomXamlResourceLoader(Local<Value> value);
  



  
  class CustomXamlResourceLoader : 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>("CustomXamlResourceLoader").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
            
      Nan::SetPrototypeMethod(localRef, "getResource", GetResource);
      
                        
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
	  Nan::SetMethod(constructor, "castFrom", CastFrom);

      Nan::SetAccessor(constructor, Nan::New<String>("current").ToLocalChecked(), CurrentGetter, CurrentSetter);

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


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

  private:
    
    CustomXamlResourceLoader(::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ 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::UI::Xaml::Resources::CustomXamlResourceLoader^ winRtInstance;


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

      CustomXamlResourceLoader *wrapperInstance = new CustomXamlResourceLoader(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::UI::Xaml::Resources::CustomXamlResourceLoader^>(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::UI::Xaml::Resources::CustomXamlResourceLoader^ winRtInstance;
		try
		{
			winRtInstance = (::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^) NodeRT::Utils::GetObjectInstance(info[0]);
		}
		catch (Platform::Exception ^exception)
		{
			NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
			return;
		}

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


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

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^>(info.This()))
      {
        return;
      }

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

      if (info.Length() == 4
        && info[0]->IsString()
        && info[1]->IsString()
        && info[2]->IsString()
        && info[3]->IsString())
      {
        try
        {
          Platform::String^ arg0 = ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(info[0])));
          Platform::String^ arg1 = ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(info[1])));
          Platform::String^ arg2 = ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(info[2])));
          Platform::String^ arg3 = ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(info[3])));
          
          ::Platform::Object^ result;
          result = wrapper->_instance->GetResource(arg0, arg1, arg2, arg3);
          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 CurrentGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;

      try 
      {
        ::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ result = ::Windows::UI::Xaml::Resources::CustomXamlResourceLoader::Current;
        info.GetReturnValue().Set(WrapCustomXamlResourceLoader(result));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void CurrentSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^>(value))
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      try 
      {

        
        ::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ winRtValue = dynamic_cast<::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^>(NodeRT::Utils::GetObjectInstance(value));

        ::Windows::UI::Xaml::Resources::CustomXamlResourceLoader::Current = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    

  private:
    ::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapCustomXamlResourceLoader(::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ wintRtInstance);
    friend ::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ UnwrapCustomXamlResourceLoader(Local<Value> value);
  };
  Persistent<FunctionTemplate> CustomXamlResourceLoader::s_constructorTemplate;

  v8::Local<v8::Value> WrapCustomXamlResourceLoader(::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ 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>(CustomXamlResourceLoader::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::UI::Xaml::Resources::CustomXamlResourceLoader^ UnwrapCustomXamlResourceLoader(Local<Value> value)
  {
     return CustomXamlResourceLoader::Unwrap<CustomXamlResourceLoader>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitCustomXamlResourceLoader(Local<Object> exports)
  {
    CustomXamlResourceLoader::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::UI::Xaml::Resources::InitCustomXamlResourceLoader(target);

  NodeRT::Utils::RegisterNameSpace("Windows.UI.Xaml.Resources", target);
}


NODE_MODULE(binding, init)