#ifndef OBJ_MODEL_H
#define OBJ_MODEL_H


#include <vector>
#include <map>
#include <string>
#include <functional>


struct Vertex
{
  Vertex(float a, float b, float c) : x(a), y(b), z(c) {}
  union { float asArray[3]; struct { float x, y, z; }; };
};

struct UV
{
  UV(float a, float b) : u(a), v(b) {}
  union { float asArray[2]; struct { float u, v; }; };
};

struct Face
{
  struct FaceDetail { union { int asArray[3]; struct { int vertexIndex, uvIndex, normalIndex; }; }; };
  std::vector<FaceDetail> indices;
};

typedef Vertex Normal;
typedef Vertex Position;
typedef Vertex Direction;

struct Object
{
  std::string           objectName;
  std::vector<Position> vertices;
  std::vector<Normal>   normals;
  std::vector<UV>       uvs;
  std::vector<Face>     faces;
  bool                  smoothing;
  std::string           materialName;
};

struct Material
{
  std::string         materialName;
  float               Ns;     // ?
  float               Ni;     // ?
  float               Ka[3];  // ambient
  float               Kd[3];  // diffuse
  float               Ks[3];  // specular
  float               d;      // ?
  int                 illum;  // ?
  std::string         map_Kd; // diffuse texture map
};

struct ObjScene
{
  std::map<std::string,Material>  materialLibrary;
  std::vector<Object>             objects;
  std::map<std::string,Object*>   objectMap;
};


//using std::vector<uint8_t> ByteArray;
//bool ReadObjFile(Scene& outScene, ByteArray& inData);

bool ReadObjFile(ObjScene& outScene, const char* fileName, std::function<void(bool okay)> callback);


#endif // OBJ_MODEL_H