using System;
using System.Diagnostics;
using System.Collections.Generic;
using System.Threading;
using log4net;
using TBF.BenchControl;
using TBF.BenchControl.Generic;
using TBF.Boxes;

namespace TBF.BenchControl.Cameras.CameraRoi
{
    /// <summary>
    /// IdcCamera object represents all IDC cameras.
    /// Camera ID is an argument of most methods.
    /// </summary>
	public class CameraRoi : ComponentBase, GenericDevices.ICameraRoi, GenericDevices.IRegisterReader
    {
		private static readonly ILog log = LogManager.GetLogger(typeof(CameraRoi));
		public override string ToString() { return string.Format("CameraRoi({0})", Cfg.ToString(1)); }

		readonly CameraRoiCfg cameraRoiCfg;

		readonly GenericDevices.ICamera camera;
		public GenericDevices.ICamera Camera { get { return camera; } }

		public float PulsesPerLtr { get { return cameraRoiCfg.ProcParams.GradPerLtr; } }

		public CameraRoi(CameraRoiCfg cfg, IList<Generic.IComponent> components)
			: base(cfg)
        {
			cameraRoiCfg = cfg;

            if (cfg.DebugLevel != Entities.DebugMode.Off)
            {
                camera = TbfComponents.FindComponent(cfg.ParentName, components) as GenericDevices.ICamera;
                if ((camera == null) && (cfg.DebugLevel != Entities.DebugMode.Inherit))
                {
                    throw new Exception("Cannot find " + Name + " parent");
                }
            }

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

		/// <summary>
		/// Events:  Event.ReadRegisterDone, Event.Error
		/// </summary>
		/// <param name="pulses">Reference to a variable for the water meter pulses</param>
		/// <returns>ReadWaterMeter instance reference casted to IOperaton</returns>
		public IOperation ReadRegisterOp(ref IntBox pulses)
		{
			return new ReadRegisterOp(this, ref pulses);
		}

		/// <summary>
		/// Events:  Event.ReadRegisterDone, Event.Error
		/// </summary>
		/// <param name="pulses">Reference to a variable for the water meter pulses</param>
		/// <param name="pulses">Reference to a variable for the related reference flow meter pulses</param>
		/// <returns>ReadWaterMeter instance reference casted to IOperaton</returns>
		public IOperation ReadRegisterOp(ref IntBox pulses, ref IntBox refPulses)
		{
			return new ReadRegisterOp(this, ref pulses, ref refPulses);
		}

		/// <summary>
		/// Events:  ReadReferenceDone, Error
		/// </summary>
		/// <param name="pulses">Reference to a variable for the water meter pulses</param>
		/// <returns>ReadWaterMeter instance reference casted to IOperaton</returns>
		public IOperation ReadReferenceForRegisterOp(ref IntBox pulses, ref IntBox refPulses)
		{
			return null;	/// not implemented
		}

		/// <summary>
		/// Watermeter wheel/arrow detection process.
		/// </summary>
		/// <param name="roiId">Region of interest (1..4)</param>
		/// <returns>Reference to operation object instance</returns>
		public IOperation DetectOp()
		{
			RoiProcedureParams pp = cameraRoiCfg.ProcParams;
			return camera.DetectOp(cameraRoiCfg.RoiNr,
				new Cameras.IdcCamera.Command.Detect(cameraRoiCfg.RoiNr, 0, pp.IRoiX, pp.IRoiY, pp.IRoiW, pp.IRoiH,
													 pp.CX, pp.CY, pp.ORoiW, pp.ORoiH, pp.R1, pp.R2, pp.R3,
													 pp.Ang1, pp.Ang2, pp.AngStep, pp.CCW, (pp.CCW ? -30 : 30),
													 pp.SequenceLen, pp.SequenceTiming, pp.BackgroundCorr,
                                                     pp.BrightnessRoi * camera.Brightness));
		}

		/// <summary>
		/// Watermeter wheel/arrow angle measurement process.
		/// </summary>
		/// <param name="roiId">Region of interest (1..4)</param>
		/// <returns>Reference to operation object instance</returns>
		public IOperation MeasureOp()
		{
			RoiProcedureParams pp = cameraRoiCfg.ProcParams;
			return camera.MeasureOp(cameraRoiCfg.RoiNr,
				new Cameras.IdcCamera.Command.Measure(cameraRoiCfg.RoiNr, true, 0, pp.IRoiX, pp.IRoiY, pp.IRoiW, pp.IRoiH,
													  pp.CX, pp.CY, pp.ORoiW, pp.ORoiH, pp.MinMvmt, pp.MaxMvmt,
                                                      pp.BrightnessRoi * camera.Brightness));
		}
	}
}