package exercises.ex_y;

import exercises.Utils;

import java.util.concurrent.Phaser;
import java.util.concurrent.atomic.AtomicInteger;

public class Runner implements Runnable {
    private static AtomicInteger nextId = new AtomicInteger(0);
    private final int id;
    private final int maxStep;
    private final Phaser phaser;

    public Runner(int maxStep, Phaser phaser) {
        id = nextId.getAndIncrement();
        this.maxStep = maxStep;
        this.phaser = phaser;
        phaser.register();
    }

    @Override
    public void run() {
        System.out.println(this + " is on the starting line");
        phaser.arriveAndAwaitAdvance();

        while (phaser.getPhase() <= this.maxStep) {
            System.out.println(this + " started stage " + phaser.getPhase());
            try {
                Utils.randomSleep(1000, 5000);
            } catch (InterruptedException e) {
                break;
            }
            System.out.println(this + " finished stage " + phaser.getPhase());
            phaser.arriveAndAwaitAdvance();
        }
        phaser.arriveAndDeregister();
    }

    @Override
    public String toString() {
        return "Runner " + id;
    }
}