package uulm.teamname.marvelous.server.lobby;

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;

/**
 * A timer meant to time the entire Lifetime of the lobby, and if it is higher than the maximum permitted value,
 * call a callback given by the lobby to compute a winner, and quit the lobby.
 */
public class LifetimeTimer {

    private final ScheduledExecutorService timer;
    private final int maxGameTime;
    private final Runnable callback;

    LifetimeTimer(int maxGameTime, Runnable callback) {
        String lobbyThreadName = Thread.currentThread().getName();
        ThreadFactory threadFactory = r -> new Thread(r, lobbyThreadName + "-LifetimeTimerThread");
        this.timer = Executors.newSingleThreadScheduledExecutor(threadFactory);

        this.maxGameTime = maxGameTime;
        this.callback = callback;
    }

    void startTimer() {
        timer.schedule(callback, maxGameTime, TimeUnit.SECONDS);
    }
}