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

public class ESPGame
{
	static int colourNum, correctGuesses = 0;;
	static String colour;
	static Scanner kbd = new Scanner(System.in);
	static Random rnd = new Random();
	public static void main(String[] args)
	{
		userChoice();
		System.out.println("You have guessed " + correctGuesses + " colours correct!");
	}
	/**

	    The userChoice method get's their color guess while determining if it is correct to the computer's

	 */
	public static void userChoice()
	{
		for(int i = 0; i < 5; i++)
		{
			userValidation();
			userCorrect(colour, colourNum);
			computerChoice(colourNum);
		}
	}
	/**

	    The computerChoice method prints the color the computer chooses.
	    @param colourNum The random color selected by the computer

	 */
	public static void computerChoice(int colourNum)
	{
		switch(colourNum)
		{
			case(0):
				System.out.println("The colour is Red");
				break;
			case(1):
				System.out.println("The colour is Green");
				break;
			case(2):
				System.out.println("The colour is Blue");
				break;
			case(3):
				System.out.println("The colour is Orange");
				break;
			case(4):
				System.out.println("The colour is Yellow");
				break;
		}
	}
	/**

	    The userChoice method prints the correct guesses and increments correctGuesses counter
	    @param colour The color entered by user
	    @param colourNum The random color selected by the computer
	    @return boolean for is the user was correct or not

    */
	public static boolean userCorrect(String colour, int colourNum)
	{
		switch(colour.toLowerCase())
		{
			case("red"):
				if(colourNum == 0)
				{
					System.out.println("Correct!");
					correctGuesses ++;
					return true;
				}
					break;
			case("green"):
				if(colourNum == 1)
				{
					System.out.println("Correct!");
					correctGuesses ++;
					return true;
				}
					break;
			case("blue"):
				if(colourNum == 2)
				{
					System.out.println("Correct!");
					correctGuesses ++;
					return true;
				}
					break;
			case("orange"):
				if(colourNum == 3)
				{
					System.out.println("Correct!");
					correctGuesses ++;
					return true;
				}
					break;
			case("yellow"):
				if(colourNum == 4)
				{
					System.out.println("Correct!");
					correctGuesses ++;
					return true;
				}
					break;
		}
		return false;
	}
	/**

	    The userValidation method repeats if user enters an incorrect answer.

	 */
	public static void userValidation()
	{
		colour = "";
		String answer = colour;
		while(!(answer.equalsIgnoreCase("red")|| answer.equalsIgnoreCase("green") || answer.equalsIgnoreCase("blue") || answer.equalsIgnoreCase("orange") || answer.equalsIgnoreCase("yellow")))
		{
			colourNum = rnd.nextInt(5);
			System.out.println("Please enter the colour selected by the computer:");
			colour = kbd.nextLine();
			answer = colour.toLowerCase();
		}

	}

}