package org.jboss.weld.examples.numberguess;

import java.io.Serializable;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.enterprise.context.SessionScoped;
import javax.enterprise.inject.Instance;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.inject.Inject;
import javax.inject.Named;

@Named
@SessionScoped
public class Game implements Serializable
{
   /**
    * 
    */
   private static final long serialVersionUID = 991300443278089016L;

   private int number;
   
   private int guess;
   private int smallest;
   
   @Inject @MaxNumber
   private int maxNumber;
   
   private int biggest;
   private int remainingGuesses;
   
   @Inject @Random Instance<Integer> randomNumber;
   
   public Game()
   {
   }

   public int getNumber()
   {
      return number;
   }
   
   public int getGuess()
   {
      return guess;
   }
   
   public void setGuess(int guess)
   {
      this.guess = guess;
   }
   
   public int getSmallest()
   {
      return smallest;
   }
   
   public int getBiggest()
   {
      return biggest;
   }
   
   public int getRemainingGuesses()
   {
      return remainingGuesses;
   }
   
   public void check()
   {
      if (guess > number)
      {
         biggest = guess - 1;
      }
      else if (guess < number)
      {
         smallest = guess + 1;
      }
      else if (guess == number)
      {
         FacesContext.getCurrentInstance().addMessage(null, new FacesMessage("Correct!"));
      }
      remainingGuesses--;
   }
   
   @PostConstruct
   public void reset()
   {
      this.smallest = 0;
      this.guess = 0;
      this.remainingGuesses = 10;
      this.biggest = maxNumber;
      this.number = randomNumber.get();
   }
   
   public void validateNumberRange(FacesContext context,  UIComponent toValidate, Object value)
   {
      if (remainingGuesses <= 0)
      {
         FacesMessage message = new FacesMessage("No guesses left!");
         context.addMessage(toValidate.getClientId(context), message);
		 context.getExternalContext().invalidateSession();
         ((UIInput) toValidate).setValid(false);
         return;
      }
      int input = (Integer) value;

      if (input < smallest || input > biggest) 
	   {
         ((UIInput) toValidate).setValid(false);

         FacesMessage message = new FacesMessage("Invalid guess");
         context.addMessage(toValidate.getClientId(context), message);
      }
   }
   
   @PreDestroy
   public void release() {
	System.out.println("destruct the Game now.");
   }
}