/*
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 */
package Principal;

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

/**
 *
 * @author victo
 */
public class Tanque {

    int nPCDentro;
    int nLlantasDentro;
    CanvasT canvas;
    int nPCEsperando;
    int nLlantasEsperando;
    ReentrantLock mutex;
    Condition cola;

    // 5 LLANTAS - 2 PC - 1 PC HASTA 3 LLANTAS
    public Tanque(CanvasT c) {
        this.canvas = c;
        mutex = new ReentrantLock();
        cola = mutex.newCondition();

    }

    public void EntraLlanta(int id) throws InterruptedException {
        mutex.lock();
        try {
            while (nLlantasDentro == 5 || nPCDentro == 2 || (nPCDentro == 1 && nLlantasDentro == 3) || nPCEsperando > 0) {
                nLlantasEsperando++;
                System.out.println("ESPERA LLANTA: " + id);
                nLlantasEsperando--;
                cola.await();

            }
            nLlantasDentro++;
            canvas.entraPieza("LLANTA-", id);
            System.out.println("ENTRA LLANTA: " + id);
            System.out.println("nPCDentro=" + nPCDentro + " NLlantaDentro=" + nLlantasDentro);
        } finally {
            mutex.unlock();
        }
    }

    public void SaleLlanta(int id) {
        mutex.lock();
        try {
            nLlantasDentro--;
            System.out.println("SALE LLANTA: " + id);
            System.out.println("nPCDentro=" + nPCDentro + " NLlantaDentro=" + nLlantasDentro);
            cola.signal();
        } finally {
            mutex.unlock();
        }
    }

    public void EntraPC(int id) throws InterruptedException {
        mutex.lock();
        try{
            while (nLlantasDentro == 5 || nPCDentro == 2 || (nPCDentro == 1 && nLlantasDentro == 3)) {
                System.out.println("ESPERA PC: " + id);
                cola.await();
            }
            nPCDentro++;
            canvas.entraPieza("PC-", id);
            System.out.println("ENTRA PC: " + id);
            System.out.println("nPCDentro=" + nPCDentro + " NLlantaDentro=" + nLlantasDentro);
        }finally {
            mutex.unlock();
        }

    }

    public void SalePC(int id) {
        mutex.lock();
        try{
        nPCDentro--;
            System.out.println("SALE PC: " + id);
            System.out.println("nPCDentro=" + nPCDentro + " NLlantaDentro=" + nLlantasDentro);
            cola.signal();
        }
        finally{
            mutex.unlock();
        }
    }

}