#include <iostream>

#include <glad/glad.h>
#include <GLFW/glfw3.h>

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

int main() {
  std::cout << "Hello, World!" << std::endl;

  glfwInit();
  glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
  glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
  glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
  glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);

  GLFWwindow* window = glfwCreateWindow(800, 600, "Voronoi", NULL, NULL);
  if (window == NULL) {
    std::cout << "Failed to create GLFW window" << std::endl;
    glfwTerminate();
    return -1;
  }
  glfwMakeContextCurrent(window);

  if(gladLoadGLLoader((GLADloadproc)glfwGetProcAddress) == 0) {
    std::cout << "Failed to initialize GLAD" << std::endl;
    return -1;
  }

  glViewport(0, 0, 800, 600);

  glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);

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

    glfwSwapBuffers(window);
  }


  return 0;
}

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