///
/// Copyright (c) 2017 Sensus Metering Systems
///
using System.Collections.Generic;
using System.Text;
using TBF.BenchControl.Network.Telnet;

namespace TBF.BenchControl.Network.Camera.CLP1611
{
	public class MeasurementOp : IOperation
	{
		readonly CLP1611.Camera camera;
		readonly CLP1611.CameraCfg cameraCfg;
		readonly Telnet.TelnetClient telnet;

		readonly string ipAddress;
		readonly int portNr;
		readonly IList<string> roiParams;

		string command;
		bool measurementCommandSent;


		/// <summary>
		/// Events:  Event.None or Event.Error
		/// </summary>
		/// <param name="camera">CLP1611.Camera reference</param>
		public MeasurementOp(Camera camera, string ipAddress, int portNr, IList<string> roiParams)
		{
			this.camera = camera;
			this.cameraCfg = camera.CameraCfg;
			this.telnet = camera.Telnet;
			this.ipAddress = ipAddress;
			this.portNr = portNr;
			this.roiParams = roiParams;

			measurementCommandSent = false;
		}


		public void Start()
		{
			measurementCommandSent = false;
		}

		public Event Run()
		{
			if (!measurementCommandSent)
			{
				if (telnet.State == TelnetClient.TelnetState.Inactive)
				{
					//
					// Prepare and send (=enqueue) command
					//
					StringBuilder sb = new StringBuilder();
					foreach (var s in roiParams)
					{
						sb.Append(" ");
						sb.Append(s);
					}
					command = string.Format("clp/Measurement -udp {0} {1}{2}{3} 1 1 0 0 0",
											ipAddress,
											portNr,
											cameraCfg.UseTestImages ? (" -l " + cameraCfg.TestImagesCount.ToString()) : string.Empty,
											sb);
					telnet.Enqueue(new Telnet.Command(Telnet.CmdAction.SEND_STRING, command));
					measurementCommandSent = true;
				}
			}
			return Event.None;
		}

		public void Stop()
		{
			if (measurementCommandSent)
			{
				telnet.Enqueue(new Telnet.Command(Telnet.CmdAction.SEND_COMMAND, Telnet.TelnetClient.CtrlCCommand));
			}
		}
	}
}