#include <GLES3/gl3.h> // Include the OpenGL ES header
#include <GLFW/glfw3.h>

#define GLM_FORCE_RADIANS
#define GLM_FORCE_DEPTH_ZERO_TO_ONE

#include <glm/vec4.hpp>
#include <glm/mat4x4.hpp>

#include <iostream>

void framebuffer_size_callback(GLFWwindow* window, int width, int height);  

int main()
{
    if (!glfwInit())
    {
        std::cerr << "Failed to initialize GLFW." << std::endl;
        return -1;
    }

    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 1);
#ifdef __APPLE__
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
#endif

    GLFWwindow* window = glfwCreateWindow(800, 600, "OpenGL window", nullptr, nullptr);
    if (window == NULL)
    {
        const char* description;
        int errorCode = glfwGetError(&description);
        std::cout << "Failed to create GLFW window. Error code: " << errorCode << ", Description: " << description << std::endl;
        glfwTerminate();
        return -1;
    }

    glfwMakeContextCurrent(window);

    glViewport(0, 0, 800, 600);
    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback); 
    
    glm::mat4 matrix;
    glm::vec4 vec;

    auto test = vec * matrix;

    while (!glfwWindowShouldClose(window))
    {
        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);

        glfwPollEvents();
        glfwSwapBuffers(window);
    }
    
    glfwDestroyWindow(window);
    glfwTerminate();

    return 0;
}

void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
    glViewport(0, 0, width, height);
}