#include "SHpch.h"
#include "SHSerializationHelper.hpp"
#include "SHSerialization.h"

#include <yaml-cpp/yaml.h>

#include "Scene/SHSceneManager.h"
#include "Tools/SHException.h"

#include "Math/Transform/SHTransformComponent.h"

namespace SHADE
{
  void SHSerialization::SerializeSceneToFile(std::filesystem::path const& path)
  {

  }

  std::string SHSerialization::SerializeSceneToString()
  {
    YAML::Emitter out;
    SerializeSceneToEmitter(out);
    return std::string(out.c_str());
  }

  void SHSerialization::SerializeSceneToEmitter(YAML::Emitter& out)
  {
    auto const& sceneGraph = SHSceneManager::GetCurrentSceneGraph();
    auto root = sceneGraph.GetRoot();

    SHASSERT(root != nullptr, "Root is null. Failed to serialize scene to node.");

    auto const& children = root->GetChildren();
    out << YAML::BeginDoc;
    for (auto child : children)
    {
      out << YAML::BeginSeq;
      out << SerializeEntityToNode(child);
      out << YAML::EndSeq;
    }
    out << YAML::EndDoc;
  }

  std::string SHSerialization::SerializeEntityToString()
  {
    return std::string();
  }

  void SHSerialization::SerializeEntityToFile(std::filesystem::path const& path)
  {
  }

  YAML::Node SHSerialization::SerializeEntityToNode(SHSceneNode* sceneNode)
  {
    YAML::Node node;
    if (!sceneNode)
    {
      node = YAML::Null;
      return node;
    }
    auto eid = sceneNode->GetEntityID();
    node["EID"] = eid;
    node["isActive"] = sceneNode->IsActive();
    auto const& children = sceneNode->GetChildren();
    node["NumberOfChildren"] = children.size();

    YAML::Node components;

    if (const auto transform = SHComponentManager::GetComponent_s<SHTransformComponent>(eid))
    {
      components[rttr::type::get<SHTransformComponent>().get_name().data()] = SHSerializationHelper::SerializeComponentToNode(transform);
    }
    node["Components"] = components;
    return node;
  }
}