///
/// Copyright (c) 2016 Sensus Metering Systems
///
using System;
using log4net;
using TBF.Boxes;
using TBF.BenchControl.Keithley.Multimeter_2010_RS232;

namespace TBF.BenchControl.Keithley.TempMeter
{
	public class ReadTempOp : IOperation
	{
		private static readonly ILog log = LogManager.GetLogger(typeof(ReadTempOp));
        public override string ToString() { return string.Format("ReadTempOp({0},.,{1})", tempMeter.Name, eventDone); }

		/// Set by the constructor
        readonly TempMeter tempMeter;
		readonly DoubleBox temperature;
		readonly Event eventDone;

		/// <summary>
		/// Events:  TempInDone, TempOutDone, TempDivDone or Error
		/// </summary>
		/// <param name="tempMeter">TempMeter reference</param>
		/// <param name="temperature">Reference to the variable, value is in degree Celsius</param>
		/// <param name="eventDone">Event to be returned by Run() when completed OK</param>
        public ReadTempOp(TempMeter tempMeter, ref DoubleBox temperature, Event eventDone)
        {
			if (tempMeter == null) throw new ArgumentNullException("tempMeter");
            this.tempMeter = tempMeter;
			this.temperature = temperature;
			this.eventDone = eventDone;
			log.Debug(this.ToString());
        }
        public ReadTempOp(TempMeter tempMeter, ref DoubleBox temperature)
			: this(tempMeter, ref temperature, Event.TempDone)
        {
		}

		/// <summary>Start this operation</summary>
		public void Start()
        {
			tempMeter.Multimeter.StartReadingMultimeter(tempMeter.Channel);
			temperature.Val = 0;
        }

		/// <summary>Run this operation</summary>
		/// <returns>
		///		Event.TempInDone, Event.TempOutDone or Event.TempDivDone
		/// </returns>
		public Event Run()
		{
            temperature.Val = tempMeter.ReadTemperature();
			return eventDone;
		}

		/// <summary>Stop this operation</summary>
		public void Stop()
		{
			tempMeter.Multimeter.StopReadingMultimeter(tempMeter.Channel);
		}
	}
}