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

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

int main(int argc, char **argv) {
	std::cout << "Hello working!" << std::endl;
	static bool dragging_window = false;
	static ImVec2 move_offset;

	glfwInit();
	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
	glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

	// make the window
	GLFWwindow *window = glfwCreateWindow(640, 480, "OpenGL Demo", NULL, NULL);
	if (!window) {

		std::cout << "Failed to create GLFW window." << std::endl;
		glfwTerminate();
		return -1;
	}
	glfwMakeContextCurrent(window);
	// d

	// load graphics
	if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
		std::cerr << "Failed to initialize OpenGL loader!" << std::endl;
		return -1;
	}
	glViewport(0, 0, 640, 480);
	// d

	// now make ImGui
	IMGUI_CHECKVERSION();
	ImGui::CreateContext();
	ImGuiIO &io = ImGui::GetIO();
	(void)io;
	ImGui::StyleColorsDark();
	ImGui_ImplGlfw_InitForOpenGL(window, true);
	ImGui_ImplOpenGL3_Init("#version 130");
	/// im a dumbass
	///

	// program
	while (!glfwWindowShouldClose(window)) {

		glClearColor(1.0f, .5f, .2f, 1.0f);
		glClear(GL_COLOR_BUFFER_BIT);

		glfwPollEvents();

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

		ImGui::BeginMainMenuBar();
		ImVec2 mouse_pos = ImGui::GetMousePos();
		ImVec2 window_pos = ImGui::GetWindowPos();

		if (ImGui::IsMouseDown(0) && ImGui::IsItemHovered()) {

			if (!dragging_window) {
				dragging_window = true;
				move_offset = ImVec2(mouse_pos.x - window_pos.x,
									 mouse_pos.y - window_pos.y);
			}

		int new_x = static_cast<int>(mouse_pos.x - move_offset.x);
		int new_y = static_cast<int>(mouse_pos.y - move_offset.y);
		glfwSetWindowPos(window, new_x, new_y);

		} else {

			dragging_window = false;
		}



		if (ImGui::BeginMenu("File")) {
			ImGui::MenuItem("Exit");
			ImGui::EndMenu();
		}
		ImGui::EndMainMenuBar();

		ImGui::Begin("Editor");
		ImGui::Text("Hello from editor");
		ImGui::End();

		ImGui::Render();
		ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
		glfwSwapBuffers(window);
	}

	glfwDestroyWindow(window);
	glfwTerminate();

	return 0;
}