//                           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
COMPANY.

THIS PROPRIETARY NOTICE IS NOT APPLICABLE IF DELIVERED TO THE U.S.
GOVERNMENT.

UNPUBLISHED WORK - COPYRIGHT RAYTHEON COMPANY.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

using System;
using System.Collections.Generic;
using NLog;
using Raytheon.Common;

namespace Raytheon.Instruments
{
   /// <summary>
   /// A class that implements the Teradyne HSS Sub System Chassis
   /// </summary>
   public unsafe class CommFpgaHssubChassisSs : IFpgaComm
   {
      #region PrivateClassMembers
#pragma warning disable CS0649
      public struct CardInfo
      {
         internal string cardName;
         internal string cardAddress;
         internal int startingOffset;
         internal string cardFirmwareFile;
         internal string memMap;
      }
#pragma warning restore

      private object _syncObj = new Object();

      private SortedDictionary<string, CommFpgaHssubCardSs> _hssCardNameMap;
      private List<CardInfo> _cardList;
      private SelfTestResult _selfTestResult;
      private State _state;
      private string _name;

      private readonly ILogger _logger;

      private readonly IConfigurationManager _configurationManager;
      private readonly IConfiguration _configuration;

      #endregion

      #region PrivateFuctions

      /// <summary>
      /// The finalizer.
      /// </summary>
      ~CommFpgaHssubChassisSs()
      {
         Dispose(false);
      }

      /// <summary>
      /// 
      /// </summary>
      /// <param name="cardName"></param>
      /// <param name="cardAddress"></param>
      /// <param name="cardOffset"></param>
      /// <param name="cardFirmwareFile"></param>
      private void CreateCard(string cardName, string cardAddress, int startingOffset, string cardFirmwareFile, string memMap)
      {
         lock (_syncObj)
         {
            // create the card
            CommFpgaHssubCardSs card = new CommFpgaHssubCardSs(cardName, cardAddress, startingOffset, cardFirmwareFile, memMap);

            // hold onto the card
            _hssCardNameMap[cardName] = card;
         }
      }

      /// <summary>
      /// 
      /// </summary>
      /// <param name="fpgaName"></param>
      public void LoadFirmware(string fpgaName)
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            _hssCardNameMap[fpgaName].LoadFirmware();
         }
      }

      /// <summary>
      /// 
      /// </summary>
      private void SelfTest()
      {
         // loop through each card and command self test

         /*short testResults = -1;

			StringBuilder errorStrTemp = new StringBuilder(512);

			int ret = HssubNativeMethods.terHss_self_test(_chassisHandle, ref testResults, errorStrTemp);

			if (ret != 0)
			{
			   string errorStr = HssUtilTs.BuildErrorString(_chassisHandle, ret, _chassisLogicalName);

			   throw new Exception("terHss_self_test returned an error(" + ret + ")" + ": " + errorStr);
			}
			else if (testResults != 0)
			{
			   throw new Exception("HSSub Self Test returned an error: " + testResults.ToString() + ": " + errorStrTemp.ToString());
			}*/
      }

      /// <summary>
      /// Dispose of this object's resources.
      /// </summary>
      /// <param name="disposing">True = currently disposing, False = not disposing.</param>
      protected virtual void Dispose(bool disposing)
      {
         if (disposing)
         {
            lock (_syncObj)
            {
               if (_state == State.Ready)
               {
                  foreach (KeyValuePair<string, CommFpgaHssubCardSs> entry in _hssCardNameMap)
                  {
                     entry.Value.Dispose();
                  }

                  _state = State.Uninitialized;
               }
            }
         }
      }
      #endregion

      #region PublicFuctions

      /// <summary>
      /// CommFpgaHssubChassisSs factory constructor
      /// </summary>
      /// <param name="deviceName"></param>
      /// <param name="configurationManager"></param>
      public CommFpgaHssubChassisSs(string deviceName, IConfigurationManager configurationManager)
      {
         Name = deviceName;

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

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

         _cardList = new List<CardInfo>();

         // hold onto the card objects
         _hssCardNameMap = new SortedDictionary<string, CommFpgaHssubCardSs>();

         _selfTestResult = SelfTestResult.Unknown;

         _state = State.Uninitialized;
      }

      /// <summary>
      /// 
      /// </summary>
      /// <param name="deviceName"></param>
      public CommFpgaHssubChassisSs(string deviceName)
      {
         _name = deviceName;
         _logger = LogManager.GetLogger($"{this.GetType().Name} - {deviceName}");
         _cardList = new List<CardInfo>();

         // hold onto the card objects
         _hssCardNameMap = new SortedDictionary<string, CommFpgaHssubCardSs>();

         _selfTestResult = SelfTestResult.Unknown;

         _state = State.Uninitialized;
      }

      /// <summary>
      /// 
      /// </summary>
      /// <param name="cardInfo"></param>
      public void AddCard(CardInfo cardInfo)
      {
         _cardList.Add(cardInfo);
      }

      /// <summary>
      /// 
      /// </summary>
      /// <returns></returns>
      public bool ClearErrors()
      {
         return false;
      }

      /// <summary>
      /// 
      /// </summary>
      public string DetailedStatus
      {
         get
         {
            return "This is a FPGA HSS Chassis SS " + _name;
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public bool DisplayEnabled
      {
         get
         {
            return false;
         }

         set
         {
            throw new NotImplementedException();
         }
      }

      /// <summary>
      /// Dispose of this object's resources.
      /// </summary>
      public void Dispose()
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            Dispose(true);

            GC.SuppressFinalize(this);
         }
      }

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

      /// <summary>
      /// 
      /// </summary>
      /// <param name="fpga"></param>
      /// <returns></returns>
      public string GetMemMap(string fpga)
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            return _hssCardNameMap[fpga].GetMemMap();
         }
      }

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

      /// <summary>
      /// 
      /// </summary>
      public void Initialize()
      {
         Initialize(string.Empty);
      }

      /// <summary>
      /// 
      /// </summary>
      /// <param name="fpga"></param>
      public void Initialize(string fpga)
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            if (_state == State.Uninitialized)
            {
               // init each card
               for (int i = 0; i < _cardList.Count; i++)
               {
                  CreateCard(_cardList[i].cardName, _cardList[i].cardAddress, _cardList[i].startingOffset, _cardList[i].cardFirmwareFile, _cardList[i].memMap);
               }

               _state = State.Ready;
            }
            else
            {
               throw new Exception("expected the state to be Uninitialized, state was: " + _state.ToString() + " on card " + _name);
            }
         }
      }

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

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

      /// <summary>
      /// 
      /// </summary>
      /// <param name="fpgaName"></param>
      /// <param name="address"></param>
      /// <returns></returns>
      public uint Read(string fpgaName, uint address)
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            return _hssCardNameMap[fpgaName].Read(fpgaName, address);
         }
      }

      /// <summary>
      /// 
      /// </summary>
      /// <param name="fpgaName"></param>
      /// <param name="address"></param>
      /// <param name="numberOfWordsToRead"></param>
      /// <param name="dataRead"></param>
      public void ReadBlock(string fpgaName, uint address, uint numberOfWordsToRead, bool shallWeIncrementAddress, ref uint[] dataRead)
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            _hssCardNameMap[fpgaName].ReadBlock(fpgaName, address, numberOfWordsToRead, shallWeIncrementAddress, ref dataRead);
         }
      }

      /// <summary>
      /// 
      /// </summary>
      public void Reset()
      {
         lock (_syncObj)
         {
            throw new NotImplementedException();
         }
      }

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

      /// <summary>
      /// 
      /// </summary>
      public void Shutdown()
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            if (_state == State.Ready)
            {
               foreach (KeyValuePair<string, CommFpgaHssubCardSs> entry in _hssCardNameMap)
               {
                  entry.Value.Dispose();
               }

               _state = State.Uninitialized;
            }
         }
      }

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

      /// <summary>
      /// 
      /// </summary>
      /// <param name="fpgaName"></param>
      /// <param name="address"></param>
      /// <param name="value"></param>
      public void Write(string fpgaName, uint address, uint value)
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            _hssCardNameMap[fpgaName].Write(fpgaName, address, value);
         }
      }

      /// <summary>
      /// 
      /// </summary>
      /// <param name="fpgaName"></param>
      /// <param name="address"></param>
      /// <param name="numberOfWordsToWrite"></param>
      /// <param name="data"></param>
      /// <param name="shallWeIncrementAddress"></param>
      public void WriteBlock(string fpgaName, uint address, uint numberOfWordsToWrite, uint[] data, bool shallWeIncrementAddress)
      {
         // lock up the FPGA resource
         lock (_syncObj)
         {
            _hssCardNameMap[fpgaName].WriteBlock(fpgaName, address, numberOfWordsToWrite, data, shallWeIncrementAddress);
         }
      }

      #endregion

   }
}