///
/// Copyright (c) 2017 Sensus Metering Systems
///
using System;
using log4net;
using TBF.Boxes;

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

		/// Set by the constructor
        Easytherm easytherm;
		Event eventDone;
		DoubleBox temp;

		/// <summary>
		/// Events:  TempInDone, TempOutDone, TempDivDone or Error
		/// </summary>
		/// <param name="easytherm">TempMeter reference</param>
		/// <param name="temp">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(Easytherm easytherm, ref DoubleBox temp, Event eventDone)
        {
			if (easytherm == null) throw new ArgumentNullException("easytherm");
            this.easytherm = easytherm;
			this.temp = temp;
			this.eventDone = eventDone;
			log.Debug(this.ToString());
        }

		public ReadTempOp(Easytherm tempMeter, ref DoubleBox temp)
			: this(tempMeter, ref temp, Event.TempDone)
        {
		}

		/// <summary>Start this operation</summary>
		public void Start()
        {
            temp.Val = easytherm.ReadTemperature();
        }

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

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