package npw;

import java.awt.Color;
import java.util.Random;
import java.util.Scanner;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;

import painter.SPainter;
import shapes.SSquare;

public class Number2 {
    // The solution to the graphical problem.
    private void paintTheImage() {
        // Get the input information fron the user.
        int nrOfRows = getNumber("rows");
        int nrOfColumns = getNumber("columns");
        int sizeOfSquare = getNumber("square side length");
        // Establish the painter.
        int height = nrOfRows * sizeOfSquare;
        int width = nrOfColumns * sizeOfSquare;
        SPainter miro = new SPainter("Number 2",width+50,height+50);
        miro.setBrushWidth(4);
        SSquare square = new SSquare(sizeOfSquare);
        // Paint the rectangles.
        paintRectangle(miro,square,nrOfRows,nrOfColumns);
    }

    private static int getNumber(String prompt) {
        String nss = JOptionPane.showInputDialog(null,prompt+"?");
        Scanner scanner = new Scanner(nss);
        return scanner.nextInt();
    }

    private static void paintRectangle(SPainter miro, SSquare square,
                                       int nrOfRows, int nrOfColumns) {
        // Position the painter to paint the rectangle of squares.
        miro.mlt(((nrOfColumns-1)/2.0) * square.side());
        miro.mbk(((nrOfRows-1)/2.0) * square.side());
        // Paint the rectangle of squares.
        int i = 1;
        while ( i <= nrOfRows) {
            paintOneRow(miro,nrOfColumns,square);
            miro.mfd(square.side());
            i = i + 1;
        }
        // Make the method invariant with respect to painter position.
        miro.mrt(((nrOfColumns-1)/2.0) * square.side());
        miro.mfd(((nrOfRows-1)/2.0) * square.side());
    }

    private static void paintOneRow(SPainter miro, int nrOfColumns, SSquare square) {
        int i = 1;
        while ( i <= nrOfColumns ) {
            paintOneSquare(miro,square);
            miro.mrt(square.side());
            i = i + 1;
        }
        miro.mlt(nrOfColumns*square.side());
    }

    private static void paintOneSquare(SPainter miro, SSquare square) {
        //Shrink the square, dividing the side by 2.
        square.resetSide((int) (square.side()/2));
        miro.paint(square);
        miro.setColor(randomColor());
        miro.paint(square);
       // miro.setColor(Color.WHITE);
        miro.draw(square);
       // miro.setColor(Color.white);
        square.resetSide((int) (square.side()*2));
        //with this we expand it by 2, so that we get space.
    }
    private static Color randomColor() {
        Random rgen = new Random();
        int r = rgen.nextInt(256);
        int g = rgen.nextInt(256);
        int b = rgen.nextInt(256);
        return new Color(r,b,g);
    }

    public Number2(){
        paintTheImage();
    }

    public static void main(String[] args){
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new Number2();
            }
        });
    }
}