#include <cstdlib>
#include <iostream>
#include <SDL2/SDL.h>
#include <vector>

int main(int argc, char** argv) {
	SDL_Init(SDL_INIT_VIDEO);

	auto sdlWindow = SDL_CreateWindow(nullptr, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1024, 768, SDL_WINDOW_OPENGL);
	if(sdlWindow == nullptr) {
		std::cerr << "Unable to create SDL window." << std::endl;
		SDL_Quit();
		return EXIT_FAILURE;
	}

	auto glContext = SDL_GL_CreateContext(sdlWindow);
	if(glContext == nullptr) {
		std::cerr << "Unable to create OpenGL context." << std::endl;
		SDL_DestroyWindow(sdlWindow);
		SDL_Quit();
		return EXIT_FAILURE;
	}

	auto fullscreen = false;
	auto keepAlive = true;

	while(keepAlive) {
		SDL_Event sdlEvent{ };
		while(SDL_PollEvent(&sdlEvent)) {
			switch(sdlEvent.type) {
			case SDL_KEYDOWN:
				if(sdlEvent.key.keysym.sym == SDLK_f) {
					// toggle fullscreen
					if(! fullscreen) {
						SDL_SetWindowFullscreen(sdlWindow, SDL_WINDOW_FULLSCREEN_DESKTOP);
						fullscreen = true;
					} else {
						SDL_SetWindowFullscreen(sdlWindow, 0);
						fullscreen = false;
					}
				} else if(sdlEvent.key.keysym.sym == SDLK_m) {
					// minimize
					SDL_MinimizeWindow(sdlWindow);
				} else if(sdlEvent.key.keysym.sym == SDLK_ESCAPE) {
					// quit
					keepAlive = false;
				}

				break;
			default:
				;
			}
		}
	}

	SDL_GL_DeleteContext(glContext);
	SDL_DestroyWindow(sdlWindow);
	SDL_Quit();
	return EXIT_SUCCESS;
}