#ifndef OBJ_H
#define OBJ_H

#ifndef yyFlexLexer
#	define yyFlexLexer objbaseFlexLexer
#	include <FlexLexer.h>
#endif
#include <filesystem>
#include <fstream>
#include <glm/glm.hpp>
#include <memory>
#include <vector>

class ObjParser : yyFlexLexer {
public:
	explicit ObjParser(const std::filesystem::path & fileName) : ObjParser {std::make_unique<std::ifstream>(fileName)}
	{
	}

	explicit ObjParser(std::unique_ptr<std::istream> in) : yyFlexLexer(in.get())
	{
		ObjParser::yylex();
	}

	int yylex() override;

	std::vector<glm::vec4> vertices;
	std::vector<glm::vec3> texCoords;
	std::vector<glm::vec3> normals;
	using FaceElement = glm::vec<3, int>;
	using Face = std::vector<FaceElement>;
	std::vector<Face> faces;
	glm::length_t axis {0};
};

#endif