package ulohy;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.Iterator;

public class MojSpravcaUloh implements SpravcaUloh {

	List<Uloha> zoznam = new ArrayList<Uloha>();

	@Override
	public void zaradUlohu(Uloha uloha) {
		zoznam.add(uloha);
		Collections.sort(zoznam);
		// TODO Auto-generated method stub

	}

	@Override
	public boolean existujeUloha() {
		// TODO Auto-generated method stub
		if(zoznam.isEmpty())return false;
		else
		return true;
	}

	@Override
	public void zrusVsetkyUlohy() {
		// TODO Auto-generated method stub
		zoznam.clear();


	}

	@Override
	public Uloha vyberUlohu() throws Exception {
		// TODO Auto-generated method stub
		if(existujeUloha()){
			Uloha p=zoznam.get(0);
			zoznam.remove(0);
			return p;
		}
		else { throw new Exception("Neexistuje uloha");
		}
	}

	@Override
	public int zistiPocet(int priorita) {
		// TODO Auto-generated method stub
		int pocet=0;
		Iterator<Uloha> iterator=zoznam.iterator();
		while (iterator.hasNext()) {
			if (iterator.next().getPriorita()==priorita) {

		    pocet++;
			}

		}
		return pocet;
	}

	@Override
	public void vypisPodlaPriority() {
		// TODO Auto-generated method stub
		System.out.println(zoznam);
	}

	@Override
	public Set<Uloha> vratUlohySDanouPrioritou(int priorita) {
		// TODO Auto-generated method stub
		Set<Uloha> mnozina = new HashSet<Uloha>();
		Iterator<Uloha> iterator=zoznam.iterator();
		while (iterator.hasNext()) {
			Uloha k = (Uloha)iterator.next();
			if(k.getPriorita()==priorita){
			mnozina.add(k);
			}

		}
		return mnozina;
	}

	@Override
	public Uloha vratUlohuPodlaPopisu(String popis) {
		// TODO Auto-generated method stub
		return null;
	}

}