#include <iostream>
#define GLEW_STATIC
#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include <gl/wglew.h>


#include "freeimage/freeimage.h"
//#include "opengl_framework.h"
#include <fstream>


#include <vector>


using namespace std;



bool makelog(char *message)
{
    ofstream fout("log.txt");
    fout << message << endl;
    fout.close();
    return true;
}

bool writelog(char *message)
{
    ofstream fout("log.txt", ios_base::app);
    fout << message << endl;
    //fout.close();
    return true;
}




// ***************************************************************************************************************************
// ***************************************************************************************************************************

void error_callback(int, const char* description)
{
    std::cerr << description << std::endl;
}

int main(int, char const* [])
{
    makelog(">");


    std::cerr << "Initializing OpenGL." << std::endl;

    writelog("Initializing OpenGL.");

    glfwInit();
    glfwSetErrorCallback(error_callback);

    glfwWindowHint(GLFW_DECORATED, GL_TRUE);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

    auto window = glfwCreateWindow(640, 480, "MaSzyna Client", nullptr, nullptr);
    glfwMakeContextCurrent(window);

    glewExperimental = true;

    if(GLenum err = glewInit() != GLEW_OK)
    {
        writelog("glewInit Failed!");
        std::cerr << glewGetErrorString(err) << std::endl;
        return EXIT_FAILURE;
    }

    if (!GLEW_VERSION_3_2)
    {
        writelog("OpenGL 3.2 not supported!");
        return false;
    }

    // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    if (glewIsSupported("GL_ARB_texture_non_power_of_two"))
      {
        writelog("GL_ARB_texture_non_power_of_two not supported!");
      }
     else
     {
      writelog("GL_ARB_texture_non_power_of_two OK");
     }


    // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    if (glMultiDrawElementsIndirect != nullptr)
    {
        writelog("glMultiDrawElementsIndirect not supported!");
    }
    else
    {
        writelog("glMultiDrawElementsIndirect OK");
    }

    writelog("OGLR->Init()");
    //OGLR->Init();

    writelog("MAIN LOOP");

    while(!glfwWindowShouldClose(window))
    {
        glClear(GL_COLOR_BUFFER_BIT);

        glfwSwapBuffers(window);
        glfwPollEvents();
    }

    glfwDestroyWindow(window);
    glfwTerminate();

    return EXIT_SUCCESS;
}