import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class QuadraticEq {
    private static final Pattern EQN = Pattern.compile("([+-]?\\d+)[Xx]\\^2\\s*([+-]?\\d+)[Xx]\\s*([+-]?\\d+)");
    private final double a;
    private final double b;
    private final double c;
    private double delta;
    private double x1;
    private double x2;
    private double Wx;
    private double Wy;

    private QuadraticEq(double a, double b, double c) {
        this.a = a;
        this.b = b;
        this.c = c;

        calculate();
    }

    public static QuadraticEq parseString(final String eq) {
        final Matcher matcher = EQN.matcher(eq);
        if (!matcher.matches()) {
            throw new IllegalArgumentException("Not a valid pattern " + eq);
        }
        final int a = Integer.parseInt(matcher.group(1));
        final int b = Integer.parseInt(matcher.group(2));
        final int c = Integer.parseInt(matcher.group(3));


        return new QuadraticEq(a, b, c);
    }

    private void calculate() {
        delta = b * b - 4 * a * c;
        x1 = 0; //zamiast 0 oblicz x1
        x2 = 0; //zamiast 0 oblicz x2
        Wx = 0; //zamiast 0 oblicz Wx
        Wy = 0; //zamiast 0 oblicz xWy
    }


    public double getA() {
        return a;
    }

    public double getB() {
        return b;
    }

    public double getC() {
        return c;
    }

    public double getDelta() {
        return delta;
    }

    public double getX1() {
        return x1;
    }

    public double getX2() {
        return x2;
    }

    public double getWx() {
        return Wx;
    }

    public double getWy() {
        return Wy;
    }

    @Override
    public String toString() {
        return "QuadraticEq{" +
                "a=" + a +
                ", b=" + b +
                ", c=" + c +
                ", delta=" + delta +
                ", x1=" + x1 +
                ", x2=" + x2 +
                ", Wx=" + Wx +
                ", Wy=" + Wy +
                '}';
    }
}