YoggieEngine/Editor/src/SceneSerializer.h

#pragma once
#include <yaml-cpp/yaml.h>
#include <string>
#include <filesystem>
#include <fstream>

void WriteFile(std::string& emitter, std::filesystem::path path) 
{
	std::cout << "Writing Scene file to: "  << path.u8string() << std::endl;
	std::ofstream sceneFile;
	sceneFile.open(path.u8string());

	sceneFile << emitter.c_str();

	sceneFile.close();
}

YAML::Emitter& operator<< (YAML::Emitter& emitter, glm::vec3& vector) {
	emitter << YAML::Flow <<  YAML::BeginSeq << vector.x << vector.y << vector.x << YAML::EndSeq;
	return emitter;
}

void Serialize(YAML::Emitter& emitter, TransformComponent& transform) 
{
	emitter << YAML::BeginMap;
	emitter << YAML::Key << "Transform" << YAML::Value << YAML::Flow << YAML::BeginSeq;

	emitter << YAML::Key << "Position";
	emitter << YAML::Value << transform.Position;

	emitter << YAML::Key << "Rotation";
	emitter << YAML::Value << transform.Rotation;

	emitter << YAML::Key << "Scale";
	emitter << YAML::Value << transform.Scale;

	emitter << YAML::EndSeq << YAML::EndMap;
}

void Serialize(YAML::Emitter& emitter, IdentifierComponent& identifier) 
{
	emitter << YAML::BeginMap;
	emitter << YAML::Key << "Ident";
	emitter << YAML::Value << identifier.name;
	emitter << YAML::EndMap;
}

void Serialize(YAML::Emitter& emitter, LightComponent& light) 
{
	emitter << YAML::BeginMap << "Light";
	emitter << YAML::Key << "strength";
	emitter << YAML::Value << light.Strength;

	emitter << YAML::Key << "Color";
	emitter << YAML::Value << light.Color;
	emitter << YAML::EndMap;
}

 std::string Serialize( Scene& scene) {
	YAML::Emitter sceneYAML;
	
	sceneYAML << "YOGGIE_SCENE_FILE" ;


	scene.getReg().each([&scene, &sceneYAML](auto enttNumber) {
		Entity entity = Entity(enttNumber, &scene);
			
		Serialize(sceneYAML, entity.GetComponent<IdentifierComponent>());
		Serialize(sceneYAML, entity.GetComponent<TransformComponent>());
		if (entity.HasComponent<LightComponent>()) {
			Serialize(sceneYAML, entity.GetComponent<LightComponent>());
		}

		});
	return std::string(sceneYAML.c_str());
}

 void Parse(std::string& YAML) {
	 std::vector<YAML::Node> nodes = YAML::LoadAll(YAML);

	 for(YAML::Node node : nodes)
	 {
		 std::cout << node.Type() << std::endl;
	 }

 }

 void SaveScene(std::filesystem::path path, Scene& scene) {
	 std::string YAMLString = Serialize(scene);
	 WriteFile(YAMLString, path);
 }


 void LoadScene(std::filesystem::path path, Scene& scene)
 {
	 std::ifstream sceneFile;
	 std::string YAMLScene;
	 sceneFile.open(path.u8string());

	 std::stringstream sstream;
	 sstream << sceneFile.rdbuf();
	 YAMLScene = sstream.str();

	 sceneFile.close();


	 Parse(YAMLScene);

 }