#pragma once
#include "ggl.h"
#include "vertexbuffer.h"
#include "shader.h"
#include <vector>
#include "Glm/glm.hpp"
#include "Glm/ext.hpp"

struct VertexIndex
{
	int position;
	int texcoord;
	int normal;
};

class Model {
public:
	VertexBuffer* mVertexBuffer;
	Shader* mShader;
public:
	glm::mat4 mModelMatrix;
	float *mLightViewMatrix, *mLightProjectionMatrix;
	Model();
	void Init(const char *modelPath);
	void Draw(glm::mat4 &viewMatrix, glm::mat4 projectionMatrix, float x, float y, float z);
	void SetPosition(float x, float y, float z);
	void SetAmbientMaterial(float r, float g, float b, float a);
	void SetDiffuseMaterial(float r, float g, float b, float a);
	void SetSpecularMaterial(float r, float g, float b, float a);
	void SetTexture(const char*imagePath);
private:
	unsigned char* fileContent = nullptr;
	std::vector<glm::float3> position;
	std::vector<glm::float3> texcoord;
	std::vector<glm::float3> normal;
	std::vector<VertexIndex> vertices;
	void parseModel();
	void parseLine(const char* line);
	glm::float3 parseFloat(const char* line);
	VertexIndex parseVertexIndex(std::string pointStr);
	int addVertices(VertexIndex indexes);
	void parseTexcoord(const char* line);
	void parseNormal(const char* line);
	void parsePosition(const char* line);
	void parseFace(const char* line);
	void createVertexBuffer();
};