using System;
using log4net;

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

		/// Set by the constructor
		readonly ControlBoardDev controlBoard;

        bool stopped = false;

		/// <summary>
        /// Stop the previous control board operation (diverter, gate, etc.)
		/// Events:  None or PreviousStopped
		/// </summary>
        /// <param name="controlBoardDev">Control board component reference</param>
        public StopPreviousOp(ControlBoardDev controlBoardDev)
        {
			if (controlBoardDev == null) throw new ArgumentNullException("controlBoardDev");
			this.controlBoard = controlBoardDev;

			log.Debug(this.ToString());
        }

		/// <summary>Start this operation</summary>
		public void Start()
        {
            controlBoard.SendCommand(Command.Stop,
                                     0,                         /// ref. flowmeter number
                                     controlBoard.RRoute,       /// route
                                     0,                         /// ref. pulses
                                     TestMethods.Diverter,
                                     0.0f,
                                     20,
                                     0,
                                     StopDevs.Diverter | StopDevs.GatePulse | StopDevs.Reference | StopDevs.RegValveRegulation);
        }

		/// <summary>Run this operation</summary>
		/// <returns>
		///		Event.None or Event.PreviousStopped
		/// </returns>
		public Event Run()
		{
            if (stopped) return Event.PreviousStopped;
            if (0 == (controlBoard.StatusP & StatusP.TestCompleted))
            {
                stopped = true;
                return Event.PreviousStopped;
            }
            return Event.None;
		}

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