#include <iostream>
#include <random>
#include <chrono>
#include <list>
#include "Bird.h"
#include "Pipe.h"
#include "Magnum/GL/Renderer.h"
#include "Magnum/Math/Color.h"

#ifdef linux
#elif defined _WIN32
#elif defined TARGET_OS_MAC
#endif

#include <Magnum/GL/DefaultFramebuffer.h>
#include <Magnum/Platform/Sdl2Application.h>

using namespace Magnum;

class MyApplication: public Platform::Application {
public:
    explicit MyApplication(const Arguments& arguments);

private:
    void drawEvent() override;
};

MyApplication::MyApplication(const Arguments& arguments): Platform::Application{arguments} {
    /* TODO: Add your initialization code here */
}

void MyApplication::drawEvent() {

    Color4 r;
    GL::Renderer::setClearColor(Color4::red());
    GL::defaultFramebuffer.clear(GL::FramebufferClear::Color);



    swapBuffers();
}

MAGNUM_APPLICATION_MAIN(MyApplication)

const float g = 7.8;
const int WINDOW_X = 600;
const int WINDOW_Y = 800;

float elap_time() {
	static std::chrono::time_point<std::chrono::system_clock> start;
	static bool started = false;

	if (!started) {
		start = std::chrono::system_clock::now();
		started = true;
	}

	std::chrono::time_point<std::chrono::system_clock> now = std::chrono::system_clock::now();
	std::chrono::duration<double> elapsed_time = now - start;
	return static_cast<float>(elapsed_time.count());
}
//
//int main()
//{
//	std::mt19937 rng(time(NULL));
//	std::uniform_int_distribution<int> rgen(100, 400);
//
//	int pipe_dist = 200;

	//sf::RenderWindow window(sf::VideoMode(WINDOW_X, WINDOW_Y), "flappy");

//    std::shared_ptr<std::vector<sf::Texture>> texture_list = std::make_shared<std::vector<sf::Texture>>();
//    for (int i = 0; i < 4; i++) {
//        sf::Texture t;
//        t.loadFromFile("../Assets/bird.png", sf::IntRect(0, i*12, 34, 24));
//        texture_list->push_back(t);
//    }
//
//	// Init flappy
//    Bird bird(WINDOW_X/2, WINDOW_Y/2, texture_list);
//
//    std::list<Pipe> pipes;
//
//	// Init world
//	sf::Texture background = sf::Texture(); background.loadFromFile("../Assets/sky.png");
//	sf::Sprite background_sprite = sf::Sprite(background); background_sprite.setPosition(0, 0); background_sprite.setScale(8, 8);
//	sf::Texture land = sf::Texture(); land.loadFromFile("../Assets/land.png");
//	sf::Sprite land_sprite = sf::Sprite(land); land_sprite.setPosition(0, WINDOW_Y - WINDOW_Y / 10); land_sprite.setScale(3, 2);
//	sf::Texture pipe_up, pipe_down = sf::Texture(); pipe_down.loadFromFile("../Assets/pipe-down.png"); pipe_up.loadFromFile("../Assets/pipe-up.png");
//	sf::Sprite pipe_up_sprite = sf::Sprite(pipe_up); sf::Sprite pipe_down_sprite = sf::Sprite(pipe_down);
//	sf::Texture pipe_shaft = sf::Texture(); pipe_shaft.loadFromFile("../Assets/pipe.png");
//	sf::Sprite pipe_shaft_sprite = sf::Sprite(pipe_shaft);
//
//	double momentum = 0;
//	float step_size = 0.005f;
//	double frame_time = 0.0, elapsed_time = 0.0, delta_time = 0.0, accumulator_time = 0.0, current_time = 0.0;
//	float speed = 250;
//
//    std::shared_ptr<sf::Shader> shader = std::make_shared<sf::Shader>();
//    if (!shader->loadFromFile("/home/mrh/source/floppy-bird/Assets/shaders/pipe_shader.vert", "/home/mrh/source/floppy-bird/Assets/shaders/pipe_shader.frag"))
//    {
//        std::cout << "asodijfoqijwef" << std::endl;
//    }
//
//	while (window.isOpen())
//	{
//		sf::Event event; // Handle input
//		while (window.pollEvent(event)) {
//			if (event.type == sf::Event::Closed)
//				window.close();
//			if (event.type == sf::Event::MouseWheelScrolled)
//				if (event.mouseWheelScroll.wheel == sf::Mouse::VerticalWheel)
//					speed += event.mouseWheelScroll.delta * 20;
//			if(event.type == sf::Event::KeyPressed)
//				if (event.key.code == sf::Keyboard::Space)
//					bird.impulse(3.0);
//			if (event.type == sf::Event::MouseButtonPressed) {
//				if (event.mouseButton.button == sf::Mouse::Right)
//					pipe_dist -= 10;
//				if (event.mouseButton.button == sf::Mouse::Middle)
//					pipe_dist += 10;
//				if (event.mouseButton.button == sf::Mouse::Left)
//                    bird.impulse(3.0);
//			}
//		}
//
//		elapsed_time = elap_time(); // Handle time
//		delta_time = elapsed_time - current_time;
//		current_time = elapsed_time;
//		if (delta_time > 0.02f) {
//            delta_time = 0.02f;
//        }
//		accumulator_time += delta_time;
//
//		while ((accumulator_time - step_size) >= step_size) { // While the frame has sim time, update
//			accumulator_time -= step_size;
//
//			if (pipe_down_sprite.getPosition().x < -pipe_down_sprite.getGlobalBounds().width) {
//				pipe_down_sprite.setPosition(WINDOW_X, rgen(rng));
//				pipe_up_sprite.setPosition(WINDOW_X, pipe_down_sprite.getPosition().y + pipe_dist);
//
//                pipes.emplace_back(100, 100, std::make_shared<sf::Texture>(pipe_up), std::make_shared<sf::Texture>(pipe_shaft), shader);
//                std::cout << "added one" << std::endl;
//			}
//			else {
//				pipe_up_sprite.setPosition(pipe_up_sprite.getPosition().x - step_size * speed, pipe_up_sprite.getPosition().y);
//				pipe_down_sprite.setPosition(pipe_down_sprite.getPosition().x - step_size * speed, pipe_down_sprite.getPosition().y);
//			}
//			if (background_sprite.getPosition().x + background_sprite.getGlobalBounds().width < WINDOW_X) {
//                background_sprite.setPosition(0, 0);
//            }
//			else
//				background_sprite.setPosition(background_sprite.getPosition().x - step_size * (speed - 100), background_sprite.getPosition().y);
//			if (land_sprite.getPosition().x + 10 + land_sprite.getGlobalBounds().width < WINDOW_X)
//				land_sprite.setPosition(14, land_sprite.getPosition().y);
//			else
//				land_sprite.setPosition(land_sprite.getPosition().x - step_size * speed, land_sprite.getPosition().y);
//
//			// Check collisions
//            if (bird.collides(pipe_up_sprite.getGlobalBounds()) ||
//                bird.collides(pipe_down_sprite.getGlobalBounds()) ||
//                bird.collides(land_sprite.getGlobalBounds())
//                )
//            {
//                //std::cout << "dead!!!!!!!!" << std::endl;
//            }
//
//            bird.tick(step_size);
//            for (auto pipe = pipes.begin(); pipe != pipes.end(); ++pipe)
//            {
//                pipe->tick(step_size, speed);
//            }
//		}
//
//		window.draw(background_sprite, &*shader);  // Render
//		window.draw(land_sprite);
//		window.draw(bird);
//		window.draw(pipe_up_sprite);
//		window.draw(pipe_down_sprite);
//
//        for (auto ptr = pipes.begin(); ptr != pipes.end(); ++ptr)
//        {
//            window.draw(*ptr);
//        }
//
//		pipe_shaft_sprite.setPosition(pipe_up_sprite.getPosition()); // Render the bottom pipe
//		int y_pos = pipe_up_sprite.getPosition().y + pipe_up_sprite.getGlobalBounds().height;
//		while (y_pos < WINDOW_Y) {
//			pipe_shaft_sprite.setPosition(pipe_shaft_sprite.getPosition().x, y_pos);
//			y_pos++;
//			window.draw(pipe_shaft_sprite);
//		}
//
//		y_pos = pipe_down_sprite.getPosition().y; // Render the top pipe
//		while (y_pos > 0) {
//			pipe_shaft_sprite.setPosition(pipe_shaft_sprite.getPosition().x, y_pos);
//			y_pos--;
//			window.draw(pipe_shaft_sprite);
//		}
//
//		window.display();
//	}
//	return 0;
//
//}