// 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 Perception { namespace People { 
  v8::Local<v8::Value> WrapHeadPose(::Windows::Perception::People::HeadPose^ wintRtInstance);
  ::Windows::Perception::People::HeadPose^ UnwrapHeadPose(Local<Value> value);
  




  static bool IsVector3JsObject(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()->IsNumber()) {
        return false;
      }
    }
    
    symbol = Nan::New<String>("y").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      if (!Nan::Get(obj,symbol).ToLocalChecked()->IsNumber()) {
        return false;
      }
    }
    
    symbol = Nan::New<String>("z").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      if (!Nan::Get(obj,symbol).ToLocalChecked()->IsNumber()) {
        return false;
      }
    }
    
    return true;
  }

  ::Platform::Numerics::Vector3 Vector3FromJsObject(Local<Value> value) {
    HandleScope scope;
    ::Platform::Numerics::Vector3 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<float>(Nan::To<double>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0.0));
    }
    
    symbol = Nan::New<String>("y").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      returnValue.Y = static_cast<float>(Nan::To<double>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0.0));
    }
    
    symbol = Nan::New<String>("z").ToLocalChecked();
    if (Nan::Has(obj, symbol).FromMaybe(false)) {
      returnValue.Z = static_cast<float>(Nan::To<double>(Nan::Get(obj,symbol).ToLocalChecked()).FromMaybe(0.0));
    }
    
    return returnValue;
  }

  Local<Value> Vector3ToJsObject(::Platform::Numerics::Vector3 value) {
    EscapableHandleScope scope;

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

    Nan::Set(obj, Nan::New<String>("x").ToLocalChecked(), Nan::New<Number>(static_cast<double>(value.X)));
    Nan::Set(obj, Nan::New<String>("y").ToLocalChecked(), Nan::New<Number>(static_cast<double>(value.Y)));
    Nan::Set(obj, Nan::New<String>("z").ToLocalChecked(), Nan::New<Number>(static_cast<double>(value.Z)));

    return scope.Escape(obj);
  }

  class HeadPose : 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>("HeadPose").ToLocalChecked());
        localRef->InstanceTemplate()->SetInternalFieldCount(1);





          
            Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("forwardDirection").ToLocalChecked(), ForwardDirectionGetter);
            Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("position").ToLocalChecked(), PositionGetter);
            Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("upDirection").ToLocalChecked(), UpDirectionGetter);

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



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

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

    private:

      HeadPose(::Windows::Perception::People::HeadPose^ 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::Perception::People::HeadPose^ winRtInstance;


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

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

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





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

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Perception::People::HeadPose^>(info.This())) {
        return;
      }

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

      try  {
        ::Platform::Numerics::Vector3 result = wrapper->_instance->ForwardDirection;
        info.GetReturnValue().Set(Vector3ToJsObject(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      
    static void PositionGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Perception::People::HeadPose^>(info.This())) {
        return;
      }

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

      try  {
        ::Platform::Numerics::Vector3 result = wrapper->_instance->Position;
        info.GetReturnValue().Set(Vector3ToJsObject(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      
    static void UpDirectionGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info) {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Perception::People::HeadPose^>(info.This())) {
        return;
      }

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

      try  {
        ::Platform::Numerics::Vector3 result = wrapper->_instance->UpDirection;
        info.GetReturnValue().Set(Vector3ToJsObject(result));
        return;
      } catch (Platform::Exception ^exception) {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
      


    private:
      ::Windows::Perception::People::HeadPose^ _instance;
      static Persistent<FunctionTemplate> s_constructorTemplate;

      friend v8::Local<v8::Value> WrapHeadPose(::Windows::Perception::People::HeadPose^ wintRtInstance);
      friend ::Windows::Perception::People::HeadPose^ UnwrapHeadPose(Local<Value> value);
  };

  Persistent<FunctionTemplate> HeadPose::s_constructorTemplate;

  v8::Local<v8::Value> WrapHeadPose(::Windows::Perception::People::HeadPose^ 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>(HeadPose::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Perception::People::HeadPose^ UnwrapHeadPose(Local<Value> value) {
     return HeadPose::Unwrap<HeadPose>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitHeadPose(Local<Object> exports) {
    HeadPose::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::Perception::People::InitHeadPose(target);


  NodeRT::Utils::RegisterNameSpace("Windows.Perception.People", target);
}



NODE_MODULE(binding, init)