import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;


public class SimpleTest {

    private static Planner planner;

    @BeforeClass
    public static void init() {
        planner = new MijnPlanner();
    }

    @Test
    public void testList() {
        List<Taak> taken = Arrays.asList(
                new Taak(4, 5),
                new Taak(10, 6),
                new Taak(3,4),
                new Taak(5, 10),
                new Taak(4, 8),
                new Taak(5, 13),
                new Taak(2, 4),
                new Taak(7, 17),
                new Taak(5, 12),
                new Taak(3, 9)
        );
        List<Taak> opl = Arrays.asList(
                taken.get(9),
                taken.get(4),
                taken.get(3),
                taken.get(8),
                taken.get(5),
                taken.get(7),
                taken.get(1)
        );
        check(13, 88, planner.plan(Collections.unmodifiableCollection(taken)));
    }

    @Test
    public void testSet() {
        Taak taak = new Taak(1, 12);
        Set<Taak> taken = new HashSet<>(Arrays.asList(
                new Taak(1, 4),
                new Taak(1, 8),
                new Taak(1, 3),
                taak,
                new Taak(1, 7)
        ));
        List<Taak> opl = Arrays.asList(
            taak
        );
        check(22, 34, planner.plan(Collections.unmodifiableCollection(taken)));
    }

    @Test
    public void testAlles() {
        List<Taak> taken = Arrays.asList(
                new Taak(4, 5),
                new Taak(10, 6),
                new Taak(3,4),
                new Taak(5, 10),
                new Taak(4, 8),
                new Taak(8, 13),
                new Taak(2, 4),
                new Taak(7, 17),
                new Taak(7, 12),
                new Taak(10, 9)
        );
        List<Taak> opl = new ArrayList<>(taken);
        opl.sort(Comparator.comparingInt(Taak::getDeadline).thenComparing(Taak::getBoete));
        check(0, 88, planner.plan(Collections.unmodifiableCollection(taken)));
    }
    @Test
    public void testLeeg() {
        Set<Taak> taken = new HashSet<>();
        check(0, 0, planner.plan(Collections.unmodifiableCollection(taken)));
    }

    public void check(int minBoete, int totaal, List<Taak> antw) {
        int boete = totaal;
        for(int i = 0; i < antw.size(); i++) {
            Taak taak = antw.get(i);
            if(taak != null) {
                Assert.assertTrue(taak + " overschrijdt de deadline.", taak.getDeadline() > i);
                boete -= taak.getBoete();
            }
        }
        Assert.assertEquals("Jouw boete is niet minimaal.", minBoete, boete);
    }
    
}