#include "gui/window.hpp"
#include <stdexcept>
#include <spdlog/spdlog.h>

static void glfwErrorCallback(int error, const char *message) {
	SPDLOG_CRITICAL("Error code{}: {}", error, message);
}

static void framebufferCallback([[maybe_unused]] GLFWwindow *glfWwindow, int width, int height) {
	glViewport(0, 0, width, height);
}

gui::Window::Window() {
	SPDLOG_DEBUG("Creating Window");
	glfwSetErrorCallback(glfwErrorCallback);
	if (glfwInit() == GLFW_FALSE) {
		SPDLOG_CRITICAL("GLFW init failed.");
		throw std::runtime_error("GLFW init failed.");
	}
	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
	wwindow = std::unique_ptr<GLFWwindow, decltype(&delete_glfw_window)>(glfwCreateWindow(720, 1280, "Billy Sheet tracker", nullptr, nullptr),
																		 delete_glfw_window);
	if (!wwindow) {
		glfwTerminate();
		SPDLOG_CRITICAL("No GLFW window created, nullptr.");
		throw std::runtime_error("GLFW failed. See log.");
	}
	glfwMakeContextCurrent(wwindow.get());
	glewExperimental = true;
	if (glewInit() != GLEW_OK) {
		wwindow.reset(nullptr);
		glfwTerminate();
		SPDLOG_CRITICAL("GLEW loader failed.");
		throw std::runtime_error("GLEW failed. See log.");
	}
	glfwSetFramebufferSizeCallback(wwindow.get(), framebufferCallback);

	glfwSwapInterval(1); // VSync on
}

bool gui::Window::should_close() const noexcept {
	return glfwWindowShouldClose(wwindow.get());
}

void gui::Window::swap_buffers() const noexcept {
	glfwSwapBuffers(wwindow.get());
}