std::vector<Model> ObjManager::Import(std::string path)
{
    HANDLE file = CreateFileA(path.c_str(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);

    if (FAILED(file))
        throw std::runtime_error("ObjManager::Import CreateFileA error");

    DWORD fileSize = GetFileSize(file, 0);

    char* buffer = new char[fileSize];

    if (!ReadFile(file, buffer, fileSize, 0, 0))
        throw std::runtime_error("ObjManager::Import ReadFile error");

    if (!CloseHandle(file))
        throw std::runtime_error("ObjManager::Import CloseHandle error");

    std::istringstream ss(buffer);
    std::string line;

    Mesh mesh;

    std::vector<Vertex2> vertices;
    std::vector<int> indices;
    float vertex[3];

    int x = 0;

    while (std::getline(ss, line))
    {
        if (line[0] == 'v') // vertex
        {
            std::string str = line.erase(0, 3);
            char* result = &str[0];

            char* vert = strtok(result, " ");
            vertex[0] = (float)atof(vert);

            vert = strtok(0, " ");
            vertex[1] = (float)atof(vert);

            vert = strtok(0, " ");
            vertex[2] = (float)atof(vert);

            vertices.push_back(Vertex2(Vector3(vertex[0], vertex[1], vertex[2]), Vector2<float>()));
        }
        else if (line[0] == 'g') // object name
        {
            std::string str = line.erase(0, 1);


        }
        else if (line[0] == 'f') // face
        {
            std::string str = line.erase(0, 2);

            char* index = strtok(&str[0], " ");
            indices.push_back(atoi(index) - 1);

            index = strtok(0, " ");
            indices.push_back(atoi(index) - 1);

            index = strtok(0, " ");
            indices.push_back(atoi(index) - 1);
        }
        else if (line.substr(0, 7) == "mtllib ") // material file
        {
            // TODO: get material
        }

        x++;
    }

    mesh.vertices = vertices;
    mesh.indices = indices;

    std::vector<Model> meshes;

    Model model;
    model.mesh = mesh;

    meshes.push_back(model);

    return meshes;
}