//                           UNCLASSIFIED
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PROPRIETARY TO RAYTHEON COMPANY AND IS RESTRICTED TO USE ONLY BY PERSONS
AUTHORIZED BY RAYTHEON COMPANY IN WRITING TO USE IT. DISCLOSURE TO
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OUTSIDE RAYTHEON COMPANY WITHOUT THE EXPRESS WRITTEN APPROVAL OF RAYTHEON
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THIS PROPRIETARY NOTICE IS NOT APPLICABLE IF DELIVERED TO THE U.S.
GOVERNMENT.

UNPUBLISHED WORK - COPYRIGHT RAYTHEON COMPANY.
-------------------------------------------------------------------------*/

using System;
using NLog;
using Raytheon.Common;

namespace Raytheon.Instruments
{
   /// <summary>
   /// A sim communication device
   /// </summary>
   public class CommDeviceSim : ICommDevice
   {
      #region PrivateClassMembers
      private static object _syncObj = new Object();
      private readonly string _name;
      private SelfTestResult _selfTestResult;
      private State _state;

      private readonly ILogger _logger;

      private readonly IConfigurationManager _configurationManager;
      private readonly IConfiguration _configuration;

      #endregion

      #region PrivateFunctions
      /// <summary>
      /// The Finalizer
      /// </summary>
      ~CommDeviceSim()
      {
         Dispose(false);
      }

      /// <summary>
      /// Dispose of the resources contained by this object
      /// </summary>
      /// <param name="disposing"></param>
      protected virtual void Dispose(bool disposing)
      {
      }

      #endregion

      #region PublicFuctions

      /// <summary>
      /// CommDevice factory constructor
      /// </summary>
      /// <param name="deviceName"></param>
      /// <param name="configurationManager"></param>
      public CommDeviceSim(string deviceName, IConfigurationManager configurationManager)
      {
         _name = deviceName;
         _selfTestResult = SelfTestResult.Unknown;
         _state = State.Uninitialized;

         _logger = LogManager.GetLogger($"{this.GetType().Name} - {deviceName}");

         _configurationManager = configurationManager;
         _configuration = _configurationManager.GetConfiguration(Name);
      }


      /// <summary>
      /// 
      /// </summary>
      /// <param name="deviceName"></param>
      public CommDeviceSim(string deviceName)
      {
         _name = deviceName;
         _selfTestResult = SelfTestResult.Unknown;
         _state = State.Uninitialized;
         _logger = LogManager.GetLogger($"{this.GetType().Name} - {deviceName}");
      }

      /// <summary>
      /// 
      /// </summary>
      /// <returns></returns>
      public bool ClearErrors()
      {
         throw new NotImplementedException();
      }

      /// <summary>
      /// 
      /// </summary>
      public bool DisplayEnabled
      {
         get
         {
            throw new NotImplementedException();
         }

         set
         {
            throw new NotImplementedException();
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public string DetailedStatus
      {
         get
         {
            return "This is a Comm Device Sim called " + _name;
         }
      }

      /// <summary>
      /// Dispose of the resources
      /// </summary>
      public void Dispose()
      {
         Dispose(true);

         GC.SuppressFinalize(this);
      }

      /// <summary>
      /// 
      /// </summary>
      public bool FrontPanelEnabled
      {
         get
         {
            throw new NotImplementedException();
         }

         set
         {
            throw new NotImplementedException();
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public InstrumentMetadata Info
      {
         get
         {
            throw new NotImplementedException();
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public void Initialize()
      {
         lock (_syncObj)
         {
            if (_state == State.Uninitialized)
            {
               _state = State.Ready;
            }
            else
            {
               throw new Exception("expected the state to be Uninitialized, state was: " + _state.ToString() + " on device " + _name);
            }
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public string Name
      {
         get
         {
            return _name;
         }
      }

      /// <summary>
      /// 
      /// </summary>
      /*public void Open()
		{
		   lock (_syncObj)
		   {
		   }
		}*/

      /// <summary>
      /// 
      /// </summary>
      /// <returns></returns>
      public SelfTestResult PerformSelfTest()
      {
         lock (_syncObj)
         {
            _selfTestResult = SelfTestResult.Pass;
            return _selfTestResult;
         }
      }

      /// <summary>
      /// Read data from the device.
      /// </summary>
      /// <param name="dataRead">The buffer to put the data in</param>
      /// <returns>The number of bytes read</returns>
      public uint Read(ref byte[] dataRead)
      {
         lock (_syncObj)
         {
            return (uint)dataRead.Length;
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public void Reset()
      {
         lock (_syncObj)
         {
         }
      }

      /// <summary>
      /// Sets the read timeout
      /// </summary>
      /// <param name="timeout"></param>
      public void SetReadTimeout(uint timeout)
      {
         lock (_syncObj)
         {
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public SelfTestResult SelfTestResult
      {
         get
         {
            return _selfTestResult;
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public State Status
      {
         get
         {
            return _state;
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public void Shutdown()
      {
         lock (_syncObj)
         {
            _state = State.Uninitialized;
         }
      }

      /// <summary>
      /// Write data to the device
      /// </summary>
      /// <param name="dataToSend">The data to write</param>
      /// <param name="numBytesToWrite">The number of bytes to write</param>
      /// <returns>THe number of bytes that were written</returns>
      public uint Write(byte[] dataToSend, uint numBytesToWrite)
      {
         lock (_syncObj)
         {
            return numBytesToWrite;
         }
      }

      public void Close()
      {
         throw new NotImplementedException();
      }

      public void Open()
      {
         throw new NotImplementedException();
      }
      #endregion
   }
}