using System;
using System.Collections;
using SUISS.Scheduling;

namespace SUISSEngine
{
	public class Wait
	{
		public static Func<bool> UntilTrue(Func<bool> isDone)
		{
			return isDone;
		}

		public static IEnumerator UntilTrue(Func<bool> isDone, double intervals)
		{
			while (!isDone())
			{
				yield return intervals;
			}
			yield break;
		}

		public static IEnumerator UnityUntilTrue(Func<bool> isDone)
		{
			while (!isDone())
			{
				yield return null;
			}
			yield break;
		}

		public static IEnumerator Milliseconds(double amount)
		{
			yield return Timing.time + amount / 1000.0;
			yield break;
		}

		public static IEnumerator Seconds(double amount)
		{
			yield return Timing.time + amount;
			yield break;
		}

		public static IEnumerator Minutes(double amount)
		{
			yield return Timing.time + amount * 60.0;
			yield break;
		}

		public static IEnumerator Hours(double amount)
		{
			yield return Timing.time + amount * 60.0 * 60.0;
			yield break;
		}

		public static IEnumerator Days(double amount)
		{
			yield return Timing.time + amount * 60.0 * 60.0 * 24.0;
			yield break;
		}

		public static IEnumerator Frame()
		{
			yield return null;
			yield break;
		}

		public static IEnumerator Frames(int count)
		{
			for (int i = 0; i < count; i++)
			{
				yield return Wait.Frame();
			}
			yield break;
		}
	}
}