using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace UIWidgets
{
	public class NotifySequenceManager : MonoBehaviour
	{
		private static Notify currentNotify;

		private static List<Notify> notifySequence = new List<Notify>();

		private IEnumerator nextDelay;

		public void Clear()
		{
			if (currentNotify != null)
			{
				currentNotify.Return();
				currentNotify = null;
			}
			notifySequence.ForEach(ReturnNotify);
			notifySequence.Clear();
		}

		private void ReturnNotify(Notify notify)
		{
			notify.Return();
		}

		public void Add(Notify notification, NotifySequence type)
		{
			if (type == NotifySequence.Last)
			{
				notifySequence.Add(notification);
			}
			else
			{
				notifySequence.Insert(0, notification);
			}
		}

		private void Update()
		{
			if (!(currentNotify != null) && notifySequence.Count != 0)
			{
				currentNotify = notifySequence[0];
				notifySequence.RemoveAt(0);
				currentNotify.Display(NotifyDelay);
			}
		}

		private void NotifyDelay()
		{
			if (nextDelay != null)
			{
				StopCoroutine(nextDelay);
			}
			if (notifySequence.Count > 0 && notifySequence[0].SequenceDelay > 0f)
			{
				nextDelay = NextDelay();
				StartCoroutine(nextDelay);
			}
			else
			{
				currentNotify = null;
			}
		}

		private IEnumerator NextDelay()
		{
			yield return new WaitForSeconds(notifySequence[0].SequenceDelay);
			currentNotify = null;
		}
	}
}