using System;

namespace TBF.BenchControl.Sequences
{
	public class Statistics
	{
		double first;
		double last;
		double min;
		double max;
		double sum;
		UInt32 count;

		public float First { get { return (float)first; } }
		public float Last { get { return (float)last; } }
		public float Min { get { return (float)min; } }
		public float Max { get { return (float)max; } }
		public float Average { get { if (Count > 0) return (float)(sum / (double)count); else return 0; } }
		public UInt32 Count { get { return count; } }

		public double Sum { get { return sum; } }


		public Statistics()
		{
			Clear();
		}

		/// <summary>
		/// Resets statistics
		/// </summary>
		public void Clear()
		{
			sum = 0;
			min = float.MaxValue;
			max = float.MinValue;
			first = 0;
			last = 0;
			count = 0;
		}

		/// <summary>
		/// Updates statistics
		/// </summary>
		/// <param name="value">New value</param>
		public void Update(double value)
		{
			if (count == 0) first = value;
			last = value;
			sum += value;
			if (value < min) min = value;
			if (value > max) max = value;
			count++;
		}

		/// <summary>
		/// Updates statistics
		/// </summary>
		/// <param name="value">New boxed value</param>
		public void Update(TBF.Boxes.DoubleBox box)
		{
			Update(box.Val);
		}

		/// <summary>
		/// Updates statistics
		/// </summary>
		/// <param name="value">New boxed value</param>
		public void Update(TBF.Boxes.FloatBox box)
		{
			Update(box.Val);
		}
	}
}