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.SCircle;

public class Number3 {
    // The solution to the graphical problem.
    private void paintTheImage() {
        // Get the input information from the user.
        int nrOfRows = getNumber("rows");
        int nrOfColumns = getNumber("columns");
        int sizeOfCircle = getNumber("Circle side length");
        // Establish the painter.
        int height = nrOfRows * sizeOfCircle;
        int width = nrOfColumns * sizeOfCircle;
        SPainter miro = new SPainter("Number 3",width+50,height+50);
        miro.setBrushWidth(4);
        SCircle circle = new SCircle(sizeOfCircle);
        // Paint the rectangles.
        paintRectangle(miro,circle,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, SCircle circle,
                                       int nrOfRows, int nrOfColumns) {
        // Position the painter to paint the rectangle of Circles.
        miro.mlt(((nrOfColumns-1)/2.0) * circle.radius());
        miro.mbk(((nrOfRows-1)/2.0) * circle.radius());
        // Paint the rectangle of circles.
        int i = 1;
        while ( i <= nrOfRows) {
            paintOneRow(miro,nrOfColumns,circle);
            miro.mfd(circle.radius());
            i = i + 1;
        }
        // Make the method invariant with respect to painter position.
        miro.mrt(((nrOfColumns-1)/2.0) *circle.radius());
        miro.mfd(((nrOfRows-1)/2.0) * circle.radius());
    }

    private static void paintOneRow(SPainter miro, int nrOfColumns, SCircle circle) {
        int i = 1;
        while ( i <= nrOfColumns ) {
            paintOneCircle(miro,circle);
            miro.mrt(circle.radius());
            i = i + 1;
        }
        miro.mlt(nrOfColumns*circle.radius());
    }

    private static void paintOneCircle(SPainter miro, SCircle circle) {
        //Shrink the circle, dividing the side by 2.
        circle.resetRadius((int) (circle.radius()/2));
        miro.paint(circle);
        miro.setColor(randomColor());
        miro.paint(circle);
        miro.setColor(Color.WHITE);
        miro.draw(circle);
        circle.resetRadius((int) (circle.radius()*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 Number3(){
        paintTheImage();
    }

    public static void main(String[] args){
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new Number3();
            }
        });
    }
}