/* CSCI 200: Assignment 1 (Rock Paper Scissors): Tyler Beckman
 *
 * Author: Tyler Beckman
 *
 * Description:
 * A C++ program to play rock paper scissors (lizard spock) against
 * randomly-generated computer hands. A hand can be entered to start, and is
 * then compared against a random one. The game can then be played again until
 * the user chooses to stop. After each round, statistics are gathered and
 * displayed after the user chooses to exit the game.
 *
 * Note on project structure:
 * Just for fun and to get ahead on learning cpp, I did create my RPS using
 * classes, inheritance, and polymorphism. I have experience with this in
 * multiple other languages, so I felt it would be fun to use this as an excuse
 * to learn how the concepts work in cpp. I apologize if this is more
 * complicated than we were supposed to make it, but it was fun and it should
 * still be a perfectly functional and point-scoring program :)
 *
 * Academic integrity:
 * 1. Because I did go overboard on making an object-oriented program when we
 * haven't even learned how classes yet, I did use a lot of online cpp syntax
 * reference and explainers to learn how classes and inheritance work in cpp.
 * This includes mainly cppreference.com, but also geeksforgeeks.org and
 * tutorialspoint to figure out the basics. Nowhere did I actually copy the
 * exact structures, I simply used it to figure out how to do what I wanted and
 * what I knew how to do in other languages such as Java and JavaScript (have a
 * "which one wins" function on each sibling class of "Hand"). I am not entirely
 * sure if this needs cited, but given we have learned none of this yet, I just
 * wanted to clarify that this is all my code - not copied from the internet,
 * ChatGPT, Copilot, or anything else other than my code.
 * 2. Also since I was making a program with structures that I hadn't quite
 * learned in this language yet, I did ask Max[TODO FILL IN NAME] (someone with
 * experience in cpp) for debugging assistance when concepts I was used to in
 * other languages didn't work well in cpp. For example, I wasn't used to class
 * definitions and function bodies being separate, so he helped me figure out
 * the correct structure there so I could properly reference sibling classes in
 * methods on the parent class.
 */
#include "hands.h"

#include <iostream>
#include <memory>
#include <ostream>

int main(void) {
	int wins = 0;
	int losses = 0;
	int ties = 0;

	while (true) {
		// Take a letter input and convert it to the correct class type for
		// later use
		char handLetter;
		std::cout << "Welcome to a round of [R]ock [P]aper [S]cissors [L]izard "
					 "Sp[O]ck! Please enter "
					 "a hand to play (R/P/S/L/O): ";
		std::cin >> handLetter;
		const std::unique_ptr<Hand> userHand = Hand::fromChar(handLetter);

		// Generate a random "computer" hand and display the two choices
		const std::unique_ptr<Hand> computerHand = Hand::generateRandom();

		std::cout << std::endl
				  << "Player chose " << userHand->getHandName() << std::endl
				  << "Computer chose " << computerHand->getHandName()
				  << std::endl
				  << std::endl;

		// Compare the two hands, add to statistics, and give the correct output
		// and explanation
		switch (userHand->compareAgainst(*computerHand)) {
			case Win:
				std::cout << "The player wins, as " << userHand->getHandName()
						  << " beats " << computerHand->getHandName() << "!"
						  << std::endl;
				wins++;
				break;
			case Tie:
				std::cout << "No one wins, as " << userHand->getHandName()
						  << " is the same as " << computerHand->getHandName()
						  << "." << std::endl;
				ties++;
				break;
			case Loss:
				std::cout << "The computer wins, as "
						  << computerHand->getHandName() << " beats "
						  << userHand->getHandName() << "." << std::endl;
				losses++;
				break;
		}

		// Ask if the user would like to play again or exit
		char playAgain;
		std::cout << "Do you want to play again (Y/N)? ";
		std::cin >> playAgain;
		switch (playAgain) {
			case 'Y':
			case 'y':
				std::cout << std::endl;
				continue;
			case 'N':
			case 'n':
			default:
				std::cout << std::endl
						  << "Thanks for playing!" << std::endl
						  << "You won " << wins << " game(s), lost " << losses
						  << " game(s), and tied " << ties << " time(s)."
						  << std::endl;
				std::exit(0);
		}
	}
}