package beans;

import java.util.Iterator;
import java.util.TreeSet;

public class LotteryGuessingBean
{
   private int highNumber = 40;
   private String highNumberString;
   private String highNumberMessage;

   private int numberOfNumbers = 6;
   private String numberOfNumbersString;
   private String numberOfNumbersMessage;

   private boolean usingBonusBall = true;

   //highNumber get, set, and posse
   public int getHighNumber() {return highNumber;}
   public void setHighNumber(int highNumberIn) {
       if (highNumberIn > 0) {
           if (highNumberIn > this.numberOfNumbers) {
               this.highNumber = highNumberIn;        
               this.setHighNumberMessage(null);
           } else {
               this.setHighNumberMessage(
                 "High Number must greater than Number of Numbers");
           }
       } else {
           this.setHighNumberMessage(
             "High Number must greater than zero");
       }
   }
   //you can live on the edge and pass the highNumber int 
   //   into this bean with the setHighNumber(int) method 
   //   from your JSP, or you can use this nice safe method 
   //   which takes in a string and makes certain that it's 
   //   really ready to be assigned to an int, and then 
   //   passes it to setHighNumber(int).
   public void setHighNumberString(String highNumberStringIn) {
       int numToSet = 0;
       try {
           numToSet = Integer.parseInt(highNumberStringIn);
       } catch(NumberFormatException nfe) {
           this.setHighNumberMessage("High Number must be numeric");
           return;
       }
       this.setHighNumber(numToSet);
   }
   public String getHighNumberMessage() {
       return highNumberMessage;
   }
   public void setHighNumberMessage(String messageIn) {
       highNumberMessage = messageIn;
   }

   //numberOfNumbers get, set, and posse
   public int getNumberOfNumbers() {return numberOfNumbers;}
   public void setNumberOfNumbers(int numberOfNumbersIn) {
       if (numberOfNumbersIn > 0) {
           if (numberOfNumbersIn < this.highNumber) {
               this.numberOfNumbers = numberOfNumbersIn;
               this.setNumberOfNumbersMessage(null);
           } else {
               this.setNumberOfNumbersMessage(
                 "Number of Numbers must be less than High Number");
           }
       } else {
           this.setNumberOfNumbersMessage(
             "Number of Numbers must greater than zero");
       }
   }
   //same idea as setHighNumberString
   public void setNumberOfNumbersString(String numbersOfNumbersStringIn) {
       int numToSet = 0;
       try {
           numToSet = Integer.parseInt(numbersOfNumbersStringIn);
       } catch(NumberFormatException nfe) {
           this.setNumberOfNumbersMessage(
             "Number of Numbers must be numeric");
           return;
       }
       this.setNumberOfNumbers(numToSet);
   }
   public String getNumberOfNumbersMessage() {
       return numberOfNumbersMessage;
   }
   public void setNumberOfNumbersMessage(String messageIn) {
       numberOfNumbersMessage = messageIn;
   }

   public boolean getUsingBonusBall() {return usingBonusBall;}
   public void setUsingBonusBall(boolean usingBonusBallIn) {
       usingBonusBall = usingBonusBallIn;
   }
   
   public String getGuess() {      
       StringBuffer guessesOut = new StringBuffer();
       TreeSet guesses = new TreeSet();   
       while (guesses.size() < numberOfNumbers) {
           guesses.add(
             new Integer((int)((Math.random() * highNumber) + 1)));
       }     
       Iterator guessesIterator = guesses.iterator();
       while (guessesIterator.hasNext()) {
           guessesOut.append(guessesIterator.next());
           if (guessesIterator.hasNext()) {
               guessesOut.append(", ");
           }
       }
       
       if (usingBonusBall) {
           //using format where bonus ball can't 
           //  be previously picked number           
           boolean done = false;
           while (!done) {
               Integer bonus = 
                 new Integer((int)((Math.random() * highNumber) + 1));
               if (!guesses.contains(bonus)) {
                   guessesOut.append(" Bonus Ball: ");
                   guessesOut.append(bonus);
                   done = true;
               }
           }
       }
       return guessesOut.toString();
   }
}