using System;
using System.Threading;

namespace Roblox;

public class SelfDisposingTimer
{
	private readonly Action action;

	private Timer timer;

	private TimeSpan period;

	public SelfDisposingTimer(Action action, TimeSpan startTime, TimeSpan period)
	{
		this.action = action;
		this.period = period;
		timer = new Timer(delegate(object weakThis)
		{
			OnTimer((WeakReference)weakThis);
		}, new WeakReference(this), startTime, period);
	}

	private static void OnTimer(WeakReference self)
	{
		if (self.Target is SelfDisposingTimer currentTimer)
		{
			currentTimer.action();
		}
	}

	public bool Change(TimeSpan dueTime, TimeSpan period)
	{
		this.period = period;
		return timer.Change(dueTime, period);
	}

	public void Stop()
	{
		timer.Dispose();
		timer = null;
	}

	~SelfDisposingTimer()
	{
		timer?.Dispose();
	}

	internal void Pause()
	{
		timer.Change(-1, -1);
	}

	internal void Unpause()
	{
		timer.Change(period, period);
	}
}