///
/// Copyright (c) 2013-2015 Sensus Metering Systems
///
using System;
using log4net;

namespace TBF.BenchControl.MettlerToledo
{
	public class ReadMassesOp : IOperation
	{
		private static readonly ILog log = LogManager.GetLogger(typeof(ReadMassesOp));
		public override string ToString() { return string.Format("ReadMassesOp()"); }

		bool done;

		/// <summary>
		/// Events:  BalanceDone, Error
		/// </summary>
		/// <param name="balanceDev">Balance device instance</param>
		/// <param name="requiredReadingsCount">Required mass readings count (>= 3)</param>
		/// <param name="result">Reference to the measured mass in kg</param>
        public ReadMassesOp()
        {
			log.Debug(this.ToString());
        }

		/// <summary>Start this operation</summary>
		public void Start()
        {
			done = false;

            for (int i = 0; i < Standard.BalanceDev.BalancesCount; i++)
            {
				Standard.BalanceDev.Balances[i].GetImmediateMassMeasurement();
            }
		}

		/// <summary>Run this operation</summary>
		/// <returns>
		///		Event.None
		///		Event.BalanceDone
		///		Event.Error . . . . . Current.Tick == null
		/// </returns>
		public Event Run()
		{
			if (done) return Event.BalanceDone;			/// Mass has already been read

			for (int i = 0; i < Standard.BalanceDev.BalancesCount; i++)
            {
				if (Standard.BalanceDev.Balances[i].MsrmntState == MsrmntState.Busy)
                {
                    return Event.None;
                }
            }
			for (int i = 0; i < Multi.BalanceDev.BalancesCount; i++)
			{
				if (Multi.BalanceDev.Balances[i].MsrmntState == MsrmntState.Busy)
				{
					return Event.None;
				}
			}
			done = true;
            return Event.BalanceDone;
		}

		/// <summary>Stop this operation</summary>
		public void Stop()
		{
		}
	}
}