using System;
using UnityEngine;

namespace BitStrap
{
	[Serializable]
	public class NumberBounds<T> : IValidatable where T : IComparable<T>
	{
		[SerializeField]
		protected T min = default(T);

		[SerializeField]
		protected T max = default(T);

		public T Min
		{
			get
			{
				return min;
			}
			set
			{
				min = value;
				ValidateBounds();
			}
		}

		public T Max
		{
			get
			{
				return max;
			}
			set
			{
				max = value;
				ValidateBounds();
			}
		}

		public NumberBounds()
		{
		}

		public NumberBounds(T min, T max)
		{
			Set(min, max);
		}

		public void Set(T min, T max)
		{
			this.min = min;
			this.max = max;
			ValidateBounds();
		}

		public T Clamp(T value)
		{
			value = GetMax(value, min);
			value = GetMin(value, max);
			return value;
		}

		public T SelectMax(bool selectMax)
		{
			return (!selectMax) ? min : max;
		}

		void IValidatable.Validate()
		{
			ValidateBounds();
		}

		protected static T GetMin(T a, T b)
		{
			return (a.CompareTo(b) > 0) ? b : a;
		}

		protected static T GetMax(T a, T b)
		{
			return (a.CompareTo(b) < 0) ? b : a;
		}

		private void ValidateBounds()
		{
			T a = min;
			T b = max;
			min = GetMin(a, b);
			max = GetMax(a, b);
		}
	}
}