using System;
using System.Diagnostics;
using TBF.BenchControl.Network.Telnet;

namespace TBF.BenchControl.Network.Camera.CLP1611
{
	public class GrabImageOp : IOperation
	{
		readonly Camera camera;
		readonly Telnet.TelnetClient telnet;
		readonly string command;

		bool grabImageCommandSent;

		/// <summary>
		/// Events:  Event.None or Event.Error
		/// </summary>
		/// <param name="camera">CLP1611.Camera reference</param>
		public GrabImageOp(Camera camera, Telnet.TelnetClient telnet, string command)
		{
			this.camera = camera;
			this.telnet = telnet;
			this.command = command;
		}


		public void Start()
		{
			grabImageCommandSent = false;
		}

		public Event Run()
		{
			if (!grabImageCommandSent)
			{
				if (telnet.State == TelnetClient.TelnetState.Inactive)
				{
					telnet.Enqueue(new Telnet.Command(Telnet.CmdAction.SEND_STRING, command));
					grabImageCommandSent = true;
				}
			}
			return Event.None;
		}

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