/**
 * @author Tyler Beckman (tyler_beckman@mines.edu)
 * @brief A program to simulate bubbles bouncing around the screen with random sizes, colors,
 * and speeds (with sound effects!). Bubbles can be created with left click and removed with
 * D. Program will exit if Esc or Q are pressed.
 * @version 1
 * @date 2024-11-05
 */

#include <chrono>
#include <iostream>
#include <limits>
#include <random>

#include <SFML/Audio.hpp>
#include <SFML/Graphics.hpp>
#include <SFML/System/Clock.hpp>
#include <SFML/Window/Event.hpp>
#include <SFML/Window/Keyboard.hpp>

#include "Bubble.h"

int main() {
    sf::RenderWindow window(sf::VideoMode(1280, 640), "Tyler Beckman A4");
    window.setVerticalSyncEnabled(true);

    std::shared_ptr<sf::Music> boingSound = std::make_shared<sf::Music>();
    if (!boingSound->openFromFile("data/boing.mp3")) {
        std::cerr << "Unable to load data/boing.mp3" << std::endl;
		return -1;
	}
    boingSound->setPitch(1.25);

    sf::Music popSound;
    if (!popSound.openFromFile("data/pop.mp3")) {
        std::cerr << "Unable to load data/pop.mp3" << std::endl;
		return -1;
	}

    sf::Clock clock;

    sf::Event event;

    std::mt19937 mt(std::chrono::steady_clock::now().time_since_epoch().count());
    std::uniform_int_distribution<unsigned int> colorDist(0, 255);
    std::uniform_int_distribution<unsigned int> positionDist(100, 400);
    std::uniform_int_distribution<unsigned int> radiusDist(10, 50);
    // numeric_limits::min() necessary to make real distribution functionally inclusive
    std::uniform_real_distribution<double> speedDist(-0.1667, 0.1667 + std::numeric_limits<double>::min());

    std::vector<Bubble> bubbles;
    for (int i = 0; i < 5; i++) {
        bubbles.push_back(
            Bubble(
                positionDist(mt),
                positionDist(mt),
                speedDist(mt),
                speedDist(mt),
                radiusDist(mt),
                sf::Color(
                    colorDist(mt),
                    colorDist(mt),
                    colorDist(mt)
                ),
                boingSound
            )
        );
    }
    while (window.isOpen()) {
        window.clear();

        for (size_t i = 0; i < bubbles.size(); i++) {
            bubbles.at(i).draw(window);
        }

        window.display();

        while (window.pollEvent(event)) {
            switch (event.type) {
                case sf::Event::Closed:
                    window.close();
                    break;
                case sf::Event::KeyPressed:
                    if (event.key.code == sf::Keyboard::Key::Escape || event.key.code == sf::Keyboard::Key::Q) {
                        window.close();
                    } else if (event.key.code == sf::Keyboard::Key::D && bubbles.size() > 0) {
                        popSound.play();
                        // pop_back segfaults on a 0-sized vector so the extra check is needed
                        bubbles.pop_back();
                    }
                    break;
                case sf::Event::MouseButtonPressed:
                    if (event.mouseButton.button == sf::Mouse::Button::Left) {
                        unsigned int radius = radiusDist(mt);
                        bubbles.push_back(
                            Bubble(
                                // Subtracting radius from mouse button ensures the bubble is in the middle of the cursor
                                event.mouseButton.x - radius,
                                event.mouseButton.y - radius,
                                speedDist(mt),
                                speedDist(mt),
                                radius,
                                sf::Color(
                                    colorDist(mt),
                                    colorDist(mt),
                                    colorDist(mt)
                                ),
                                boingSound
                            )
                        );
                    }
                    break;
                default:
                    break;
            }
        }

        if (clock.getElapsedTime().asSeconds() >= (1./60)) {
            clock.restart();
            for (size_t i = 0; i < bubbles.size(); i++) {
                bubbles.at(i).updatePosition(window.getSize().x, window.getSize().y);
            }
        }
    }

    return 0;
}