#include "Application.hpp"

#include <stdexcept>
#include <sstream>
#include <GLFW/glfw3.h>

Application::~Application()
{
	if (window != nullptr) 
	{
		glfwDestroyWindow(window);
		window = nullptr;
	}

	glfwTerminate();
}

void Application::Init(int width, int height, const std::string& title)
{
	if(window == nullptr)
		glfwInit();

	window = glfwCreateWindow(width, height, title.c_str(), NULL, NULL);
	if (window == nullptr)
	{
		const char* errorbuf;
		int errorcode = glfwGetError(&errorbuf);

		glfwTerminate();

		std::stringstream errorstream;
		errorstream << "Failed to create GLFWwindow (" << errorcode << "): \n" << errorbuf << std::endl;
		throw std::runtime_error(errorstream.str());
	}

	glfwMakeContextCurrent(window);
}

void Application::Launch()
{
	while (!glfwWindowShouldClose(window))
	{
		glfwPollEvents();

		glfwSwapBuffers(window);
	}
}