package Q4;

import java.io.*;
import java.util.*;

public class RandomSumGame {
  private boolean start;
  private int d1 = 0;
  private int d2 = 0;
  private int sum = 0;
  private int valuePoint = 0;
  private int wins = 0;
  private String status;
  private PrintStream out;

  public RandomSumGame(PrintStream out) {
    this.out = out;
  }

  public void play() {
    this.rollDice();
    this.play(this.d1, this.d2);
  }

  public void play(int d1, int d2) {
    int total = d1 + d2;
    this.puts("You rolled: %d", total);
    if (!hasValuePoint()) {
      this.firstPlay(total);
    } else {
      this.subsequentPlay(total);
    }
  }

  public void rollDice() {
    this.d1 = this.roll();
    this.d2 = this.roll();
    this.sum = this.d1 + this.d2;
  }

  private int roll() {
    return new Random().nextInt(5) + 1;
  }

  private void firstPlay(int total) {
    switch (total) {
      case 2:
      case 3:
      case 12:
        this.lose("Craps! You lose.");
        break;
      case 7:
      case 11:
        this.win("Natural! You win!");
        break;
      default:
        this.puts("Value point established: %d", total);
        this.valuePoint = total;
        play();
        break;
    }
  }

  private void subsequentPlay(int total) {
    if (total == this.valuePoint) this.win("You win!");
    else if (total == 7) this.lose("You lose.");
    else play();
  }

  private void win(String message) {
    this.wins += 1;
    this.puts(message);
    this.reset();
  }

  private void lose(String message) {
    this.puts(message);
    this.reset();
  }

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

  private boolean hasValuePoint() {
    return this.valuePoint > 0;
  }

  private void reset() {
    this.valuePoint = this.d1 = this.d2 = this.sum = 0;
  }

  public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    System.out.println("Welcome to Craps");
    RandomSumGame game = new RandomSumGame(System.out);
    game.play();
  }
}