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// src/main.cpp
#include <iostream>

// Prevent GLFW from including OpenGL headers (so glad can provide them)
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>

// GL loader (glad) - include after GLFW_INCLUDE_NONE so glad can provide GL
// headers
#if __has_include("glad/glad.h")
#include <glad/glad.h>
#define HAVE_GLAD 1
#else
#define HAVE_GLAD 0
#endif

// Now include ImGui and its backends (they expect glfw + GL loader to be
// present)
#include "imgui.h"
#include "backends/imgui_impl_glfw.h"
#include "backends/imgui_impl_opengl3.h"

#include <boltdbg/util/logger.h>

int main(int argc, char **argv)
{

  if(!glfwInit())
    {
      LOG_ERROR("Failed to initialize GLFW");
      return 1;
    }

  // GL settings (3.3 core as example)
  const char *glsl_version = "#version 330";
  glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
  glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
#if __APPLE__
  glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
  glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#endif

  GLFWwindow *window
    = glfwCreateWindow(1280, 720, "BoltDBG", NULL, NULL);
  if(!window)
    {
      LOG_ERROR("Failed to create GLFW window");
      glfwTerminate();
      return 1;
    }
  glfwMakeContextCurrent(window);
  glfwSwapInterval(1);

#if HAVE_GLAD
  if(!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
    {
      LOG_ERROR("Failed to initialize GLAD");
      return 1;
    }
#else
  LOG_WARN("GLAD not detected at compile-time. If you experience GL "
               "symbol errors, add glad.");
#endif

  // ImGui init
  IMGUI_CHECKVERSION();
  ImGui::CreateContext();
  ImGuiIO &io = ImGui::GetIO();
  (void)io;
  ImGui::StyleColorsDark();

  ImGui_ImplGlfw_InitForOpenGL(window, true);
  ImGui_ImplOpenGL3_Init(glsl_version);

  LOG_INFO("Entering main loop.");

  bool show_demo = false;
  int click_count = 0;

  while(!glfwWindowShouldClose(window))
    {
      glfwPollEvents();

      ImGui_ImplOpenGL3_NewFrame();
      ImGui_ImplGlfw_NewFrame();
      ImGui::NewFrame();

      ImGui::Begin("BoltDBG - Demo");
      ImGui::Text("Hello from BoltDBG demo!");
      if(ImGui::Button("Log info with spdlog"))
        {
          click_count++;
          LOG_INFO("Button clicked {} times", click_count);
        }
      ImGui::Text("Click count: %d", click_count);
      ImGui::End();

      if(show_demo)
        ImGui::ShowDemoWindow(&show_demo);

      ImGui::Render();
      int display_w, display_h;
      glfwGetFramebufferSize(window, &display_w, &display_h);
      glViewport(0, 0, display_w, display_h);
      glClearColor(0.1f, 0.12f, 0.14f, 1.0f);
      glClear(GL_COLOR_BUFFER_BIT);
      ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());

      glfwSwapBuffers(window);
    }

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

  glfwDestroyWindow(window);
  glfwTerminate();

  LOG_INFO("BoltDBG demo exiting.");
  return 0;
}