#pragma once

#include <glm/glm.hpp>
#include <engine/Backend/Shader.h>
using namespace std;

#define MAX_BONE_INFLUENCE 4

struct Vertex {
    // position
    glm::vec3 Position;
    // normal
    glm::vec3 Normal;
    // texCoords
    glm::vec2 TexCoords;
    // tangent
    glm::vec3 Tangent;
    // bitangent
    glm::vec3 Bitangent;
	//bone indexes which will influence this vertex
	int m_BoneIDs[MAX_BONE_INFLUENCE];
	//weights from each bone
	float m_Weights[MAX_BONE_INFLUENCE];
};

struct Texture {
    unsigned int id;
    string type;
    string path;
};

class Mesh {
public:
    // mesh Data
    vector<Vertex>       vertices;
    vector<unsigned int> indices;
    vector<Texture>      textures;
    unsigned int VAO;

    Mesh(vector<Vertex> vertices, vector<unsigned int> indices, vector<Texture> textures);
    void Draw(Shader &shader);

private:
    // render data
    unsigned int VBO, EBO;

    // initializes all the buffer objects/arrays
    void setupMesh();
};