package jolyjdia.cooldown;

import org.bukkit.scheduler.BukkitRunnable;

public abstract class CountDownTimer {
    private final BukkitRunnable runnable = new BukkitRunnable() {
        @Override
        public void run() {
            final long millisLeft = stopTimeInFuture - System.currentTimeMillis();

            if (millisLeft <= 0) {
                onFinish();
                super.cancel();
            } else {
                onTick(millisLeft);
            }
        }
    };
    private final long millisInFuture;
    private final long countdownInterval;
    private long stopTimeInFuture;

    protected CountDownTimer(long millisInFuture, long countDownInterval) {
        this.millisInFuture = millisInFuture;
        this.countdownInterval = countDownInterval;
    }
    public final void start(JavaPlugin plugin) {
        if (millisInFuture <= 0) {
            onFinish();
        } else {
            this.stopTimeInFuture = System.currentTimeMillis() + millisInFuture;
            this.runnable.runTaskTimer(plugin, countdownInterval, countdownInterval);
        }
    }

    public void cancel() {
        this.runnable.cancel();
    }

    public abstract void onTick(long millisUntilFinished);
    public abstract void onFinish();
}