import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;

public class Brusautomat {

    private int kapasitet;
    private int antallBrus;
    private Lock laas = new ReentrantLock();
    private Condition maaFyllesOpp = laas.newCondition();
    private Condition tom = laas.newCondition();

    public Brusautomat(int kapasitet){
        this.kapasitet = kapasitet;
        antallBrus = kapasitet;
    }

    public void refill(){
        laas.lock();
        try {
            while(antallBrus > 0){
                maaFyllesOpp.await();
            }
            antallBrus = kapasitet;
            tom.signalAll();
            System.out.println("Brusmaksinen er naa fylt opp :))");
        } catch (Exception e) {
            System.out.println("Noe gikk galt i refill");
        }finally{
            laas.unlock();
        }
    }

    public void kjopBrus(){
        laas.lock();
        try {
            while(antallBrus == 0){
                tom.await();
            }
            antallBrus--;
            System.out.println("Jeg fikk en brus :)");
            if(antallBrus == 0){
                maaFyllesOpp.signal();
            }
        } catch (Exception e) {
            System.out.println("Noe gikk galt i kjopBrus");
        }finally{
            laas.unlock();
        }
        
    }
    
}