import java.util.Random;


public class Philosopher extends Thread {
    

    enum STATES {HUNGRY, EATING, THINKING}
    STATES state;
    int id;
    PhilosopherApplet table;
    Random rand;
    boolean sleep;

    public Philosopher(PhilosopherApplet table, int id, boolean sleep){
	state = STATES.HUNGRY;
	this.id = id;
	this.table = table;
	this.sleep = sleep;
	rand = new Random();
    }

    public void run(){
	try {
	    while(true){
		state = STATES.HUNGRY;

		//get right chopstick
		table.getFork(id, id);

		//get left chopstick
		table.getFork(id, (id + 1) % table.PHILOSOPHER_COUNT);

		state = STATES.EATING;
		
		//eat
		//sleep(200 + rand.nextInt(800));
		if(sleep)
		    busyRest(rand.nextInt(2) + 1);

		//System.out.println(id + " got to eat!");
		eat++;

		//drop right chopstick
		table.releaseFork(id, id);
		//drop left chopstick
		table.releaseFork(id,  (id + 1) % table.PHILOSOPHER_COUNT);
		
		state = STATES.THINKING;

		//think
		if(sleep)
		    busyRest(rand.nextInt(2) + 1);
		//sleep(200 + rand.nextInt(800));
	    }
	}
	catch(InterruptedException ie){
	    ie.printStackTrace();
	}
    }

    public String toString(){
	return "Philosopher " + id + " is " + state;
    }

    //rest for t seconds
    public void busyRest(int t){
	int msec = t*1000;

	//get the initial time
	long time = System.currentTimeMillis();
	long endTime = time + msec;

	while(time < endTime){
	    time = System.currentTimeMillis();
	}
    }

    //shared variable
    private static int eat = 0;

    public static synchronized int getEat(){
	return eat;
    }

    public static synchronized void incrementEat(){
	eat++;
    }
}