#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include <iostream>

#include <imgui_impl_glfw.h>
#include <imgui_impl_opengl3.h>

#include "scene.h"

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

  GLFWwindow* window = glfwCreateWindow(800, 600, "TerraVisor", nullptr, nullptr);
  if(!window) {
    std::cerr << "Failed to create GLFW window" << std::endl;
    glfwTerminate();
    return -1;
  }

  glfwMakeContextCurrent(window);
  glewExperimental = GL_TRUE;
  if(glewInit() != GLEW_OK) {
    std::cerr << "Failed to initialize GLEW" << std::endl;
    return -1;
  }

  Scene::Init();

  //Init ImGui
  IMGUI_CHECKVERSION();
  ImGui::CreateContext();
  ImGui_ImplGlfw_InitForOpenGL(window, true);
  ImGui_ImplOpenGL3_Init("#version 150");
  
  while (!glfwWindowShouldClose(window)) {
    Scene::Idle();
    Scene::Display(window);
    
    glfwPollEvents();
  }

  // Cleanup ImGui
  ImGui_ImplOpenGL3_Shutdown();
  ImGui_ImplGlfw_Shutdown();
  ImGui::DestroyContext();

  glfwDestroyWindow(window);
  glfwTerminate();
  return 0;
}