/**
 * class Board
 * 		Implement the functionality for a puzzle where a pattern
 * of 9 color squares must be matched.  
 * The program displays a grid of 25 squares on the screen, along
 * with a target pattern of 9 squares.  The goal of the game
 * is to make the 9 central squares of the large grid match
 * the colors shown in the target set.
 *  
 * Selecting the "Redo" button starts over.  Selecting the 
 * "Exit" button exits the game.
 * 
 * Class: CS 102/107, Spring 2011
 * Lab: Billie Joe Armstrong, Wed. 6:00 AM
 * System: Eclipse 3.4.2, jsdk 1.6, Windows XP

 * @author Dale Reed 
 * @version February 7, 2011
 * 
 */

import java.awt.Color;
import java.util.Scanner;		  // allows user input from the keyboard
import java.util.Random;          // allows getting a random number
import java.util.Date;			  // allow creating a Date object to keep track of time


public class Board
{      	
    // Create the random number generator.  "Seed" this with the value 1.
    // Removing the value from the parenthesis will give a different result every
    // time, which isn't what we want when we are debugging.
    Random randomNumberGenerator = new Random(1);  
	
	// declare squares to be displayed
    Square randomizeButton; 	// randomize board
    Square exitButton;			// users presses this to exit program
    Square gameMessagesLabel;	// Used to display messages
    Square goalLabel;			// Message shown above goal squares
    
    // declare some squares to be displayed on the screen
    Square s0,s1, s2,s3;
   
    
    // declare constants to use throughout program
    final int SQUARE_SIZE = 44;
    final int OFFSET = 6;	
    int moveNumber = 0;
    int xPosition, yPosition;
    // Create a Date object to keep track of time
    Date startTime = new Date();


    //----------------------------------------------------------------------------------------------
    // Constructor to create the board
    Board()
    {   
  
    	 xPosition = 40; 
    	 yPosition = 40;
  
		// adjust the x,y starting position
    	xPosition = xPosition - OFFSET/2 + 3;	   
    	yPosition = xPosition - OFFSET/4 + 2;	
    	
		// jump to the right to set the x,y position to prepare to display the 3x3 goal configuration
		xPosition = xPosition + ((SQUARE_SIZE + OFFSET) * 6);
		yPosition = yPosition + ((SQUARE_SIZE + OFFSET) * 1);
		
    	// create a set of random colors in the goal squares, ensuring adjacent squares do not have
		// the same color.
		s0 = new Square( xPosition-40*OFFSET, yPosition+10*OFFSET, SQUARE_SIZE, getRandomColor(), true, "");
	
    }//end Board() constructor
    
    
    void redraw()
    {   
    	s0.setColor("white");
		s0 = new Square( xPosition-40*OFFSET, yPosition+10*OFFSET, SQUARE_SIZE, getRandomColor(), true, "");
    }
    
    
    
    //----------------------------------------------------------------------------------------------
    // Generate a random number used to select one
    String getRandomColor()
    {
    	String theColor = "";	// will store the color, to be returned
    	
    	// generate a random number, which will be used to select a color among 8 colors
    	int randomNumber = randomNumberGenerator.nextInt( 8);
    	
    	switch (randomNumber) {
    		case 0: theColor = "darkGray"; break;
    		case 1: theColor = "red"; break;
    		case 2: theColor = "blue"; break;
    		case 3: theColor = "yellow"; break;
    		case 4: theColor = "green"; break;
    		case 5: theColor = "magenta"; break;
    		case 6: theColor = "cyan"; break;
    		case 7: theColor = "orange"; break;
    		case 8: theColor = "pink"; break;
    	
    		default: System.out.println("Random number value for color out of range.  Exiting...");
    				System.exit( -1);
    				break;
    	}//end switch
    	
    	return theColor;
    }//end getRandomColor()
    
    
    //----------------------------------------------------------------------------------------------
    // Handle each mouse click
    void handleMouseClick(int mouseX, int mouseY)
    {   
    	
    }//end handleMouseClick

    
    //----------------------------------------------------------------------------------------------
    // Handle each key press, in case you want to use this instead of mouse clicks
    void handleKeyPress( char c)
    {  
    	System.out.println("You pressed " + c);
    	if(c=='w'){
    		yPosition-=OFFSET;
    	}else if(c=='s'){
    		yPosition+=OFFSET;
    	}else{
    		System.out.println("Choose w or s to move square up and down");
    	}
    	redraw();
    }//end handleKeyPress()

    
    //----------------------------------------------------------------------------------------------
    // Handle the Redo button click by randomizing the board so that
    // each row and each column satisfies the desired parity
   
  
    
    //----------------------------------------------------------------------------------------------
    // return the square corresponding to the index
    private Square getSquareNumber( int index)
    {
    	Square returnValue = null;		// will be the reference of the Square to be returned
    	
    	switch ( index) {
    		case 0: returnValue = s0; break;
    		case 1: returnValue = s1; break;    	
    		case 2: returnValue = s2; break;
    		case 3: returnValue = s3; break;
    		default: // Sanity check, should never execute this code
    			System.out.println("*** Error: invalid square number " + index + ". Exiting...");
    			System.exit( -1);
    			break;
    	}//end switch( index)
    	
    	return returnValue;
    }//end getSquareNumber()
    
    
}// end class Board()