import java.util.Scanner;
import java.util.Random;

/*Program Name: RockPaperScissors.java
Author: Yumi Lamansky
Class: CSC110 CRN 37211
Date Written: 09/18/2018
Brief Description: Simulates rock paper scissors game;
   user against the computer
Description of inputs: Rock, Paper, or Scissors
Description of outputs:  Users choice, computers choice,
   Winner
 */

public class RockPaperScissors
{
   public static void main(String[] args)
   {

      Random random = new Random();
      Scanner keyboard = new Scanner(System.in);
      String user;
      String winner;

      System.out.println("*****ROCK PAPER SCISSORS GAME*****");

    //Computers choice
      int num;
      num = random.nextInt(3) + 1;
      String comp = "";

      if (num == 1)
      {
         comp = "Rock";
      }
      else if (num == 2)
      {
         comp = "Paper";
      }
      else if (num == 3)
      {
         comp = "Scissors";
      }


   //user picks
      System.out.println("Enter one of the following: " +
         "\n*Rock\n*Paper\n*Scissors");
      user = keyboard.nextLine();


   //invalid input
     boolean invalid = false;


   //when winning
      String win = "";

   //ROCK
      if (comp.equals("Rock") && user.equalsIgnoreCase("Scissors"))
      {
         win = "Computer";
      }
      else if (user.equalsIgnoreCase("Rock") && comp.equals("Scissors"))
      {
         win = "You!";
      }


      //PAPER
      else if (comp.equals("Paper") && user.equalsIgnoreCase("Rock"))
      {
         win = "Computer";
      }
      else if (user.equalsIgnoreCase("Paper") && comp.equals("Rock"))
      {
         win = "You!";
      }

      //SCISSORS
      else if (comp.equals("Scissors") && user.equalsIgnoreCase("Paper"))
      {
         win = "Computer";
      }
      else if (user.equalsIgnoreCase("Scissors") && comp.equals("Paper"))
      {
         win = "You!";
      }

      //TIE
      else if (user.equalsIgnoreCase(comp))
      {
         win = "Tie";
      }
      else
      {
         System.out.println("INVALID INPUT");
         invalid = true;
      }




   //Display outputs
     if (!invalid)
     {
     	System.out.println("You picked: " + user);
      	System.out.println("Computer picked: " + comp);
      	System.out.println("Winner: " + win);
     }





   }
}



/*Expected output:
*****ROCK PAPER SCISSORS GAME*****
Enter one of the following:
 *Rock
 *Paper
 *Scissors
 [ input ]
 You picked: [users input]
 Computer picked: [random]
 Winner: [winner]
*/