/**
 * Assignment 2, COMP268 Class: RockPaperScissorsLizardSpock.java
 *
 * @description Provide a class to play the game rock, paper, scissors, lizard spock.
 * @author: mo khan Student ID: 3431709
 * @date Jun 6, 2019
 * @version 1.0
 */
package Q2;

import java.util.*;

public class RockPaperScissorsLizardSpock {
  private int consecutiveWins = 0;
  private int lastWinner;

  public static final int PLAYER1 = 1;
  public static final int PLAYER2 = 2;

  public static final int LIZARD = 4;
  public static final int PAPER = 2;
  public static final int ROCK = 1;
  public static final int SCISSORS = 3;
  public static final int SPOCK = 5;

  /**
   * Returns the # of consecutive wins for the current winner.
   *
   * @return the # of consecutive wins for the current winner.
   */
  public int getConsecutiveWins() {
    return this.consecutiveWins;
  }

  /**
   * Returns the id of the current winner. See PLAYER1 and PLAYER2 constants for the possible ids.
   *
   * @return the id of the current winner.
   */
  public int getLastWinner() {
    return this.lastWinner;
  }

  /**
   * Returns a random integer between 1 - 5
   *
   * @return a random integer between 1 - 5
   */
  public int random() {
    return new Random().nextInt(4) + 1;
  }

  /**
   * Plays the game until a winner has 4 consecutive wins.
   *
   * @param player1 the choice made by player 1
   * @param player2 the choice made by player 2
   */
  public void play(int player1, int player2) {
    this.puts("Player 1: %s", convert(player1));
    this.puts("Player 2: %s", convert(player2));

    this.incrementWinsFor(this.determineWinner(player1, player2));
  }

  /**
   * Converts a integer to the equivalent name.
   *
   * @param i the integer to convert to a name.
   * @return the name for the corresponding integer value.
   */
  public static String convert(int i) {
    switch (i) {
      case ROCK:
        return "rock";
      case PAPER:
        return "paper";
      case SCISSORS:
        return "scissor";
      case LIZARD:
        return "lizard";
      case SPOCK:
        return "spock";
      default:
        return "error";
    }
  }

  private int determineWinner(int player1Roll, int player2Roll) {
    if (player1Roll == player2Roll) return 0;

    switch (player1Roll) {
      case SCISSORS:
        return (player2Roll == PAPER || player2Roll == LIZARD) ? PLAYER1 : PLAYER2;
      case PAPER:
        return (player2Roll == ROCK || player2Roll == SPOCK) ? PLAYER1 : PLAYER2;
      case ROCK:
        return (player2Roll == LIZARD || player2Roll == SCISSORS) ? PLAYER1 : PLAYER2;
      case LIZARD:
        return (player2Roll == SPOCK || player2Roll == PAPER) ? PLAYER1 : PLAYER2;
      case SPOCK:
        return (player2Roll == SCISSORS || player2Roll == ROCK) ? PLAYER1 : PLAYER2;
      default:
        return 0;
    }
  }

  private void puts(String message, Object... args) {
    System.out.println(String.format(message, args));
  }

  private void newline() {
    System.out.println();
  }

  private void incrementWinsFor(int winner) {
    if (winner == 0) return;

    if (this.lastWinner == winner) {
      this.consecutiveWins++;
    } else if (winner > 0) {
      this.lastWinner = winner;
      this.consecutiveWins = 1;
    }
  }

  /**
   * The entrypoint into the console application.
   *
   * @param args an argument vector that represents the command line arguments
   */
  public static void main(String[] args) {
    RockPaperScissorsLizardSpock game = new RockPaperScissorsLizardSpock();
    int round = 0;

    game.puts("Starting a new game of Rock, paper, scissors, lizard, spock...");
    while (true) {
      round++;
      game.newline();
      game.puts("Round: %d", round);
      game.puts("--------------------------------------");

      game.play(game.random(), game.random());
      if (game.getLastWinner() > 0)
        game.puts(
            "Player %d has %d consecutive wins.", game.getLastWinner(), game.getConsecutiveWins());

      if (game.getLastWinner() > 0 && game.getConsecutiveWins() == 4) {
        game.newline();
        game.puts("**************************************");
        game.puts("       The winner is player %d!       ", game.getLastWinner());
        game.puts("**************************************");
        game.newline();
        break;
      }
    }
  }
}