package class9_1_FunctionalCircularNumbers_start;// Dr. Yoder. MSOE. 09 February 2017

import java.util.List;
import java.util.function.Consumer;
import java.util.function.Predicate;
import java.util.stream.Collectors;

public class Driver {
    public static void main(String[] args) {
        Filter filter = new Filter();
        filter.addPole(new Complex(1,0));
        filter.addPole(new Complex(40,10));
        filter.addPole(new Complex(3,4));
        filter.addPole(new Complex(30,40));
        filter.addPole(new Complex(20,10));
        filter.addPole(new Complex(-50,0));
        filter.addPole(new Complex(4,0));

//        Write a code snippet that calls getSpecified() using a lambda expression
//        that produces true whenever the magnitude of the complex number is
//        greater than 27 for the predicate.
//        Predicate;
        filter.keepSpecified((Complex c)->{
            if(c.getMagnitude()>27) {
                return true;
            } else {
                return false;
            }
        });
        filter.getPoles().stream().filter(
                    c->c.getMagnitude()>27)
                .forEach(c-> System.out.println("c = " + c));

        List<Complex> result = filter.getPoles().stream().filter(
                c->c.getMagnitude()>27)
                .collect(Collectors.toList());
        System.out.println("result = " + result);

        List<Complex> filtered = filter.getPoles(); // TODO stop crash
        System.out.println("The filtered filter:");
        for (Complex c: filtered) {
            System.out.println("c = " + c);
        }
        //Consumer;
        filtered.forEach(complex->{
            System.out.println("complex = " + complex);
        });

        Predicate<Complex> isReal = new Predicate<Complex>() {
            @Override
            public boolean test(Complex complex) {
                return complex.getImaginary() == 0;
            }
        };

        Predicate<Complex> isReal2 = (Complex complex) -> {
                return complex.getImaginary() == 0;
        };

        Predicate<Complex> isReal3 = complex ->
            complex.getImaginary() == 0;


        // How to write a lambda expression

    }

}