using DTS.Common.Enums;
using DTS.Common.Interface.DASFactory;
using DTS.Common.Interface.DASFactory.Config;
using DTS.Common.Utilities;
using DTS.Common.Utilities.Logging;
using DTS.DASLib.Command.SLICE;
using System;
using System.Collections.Generic;

namespace DTS.DASLib.Service
{
    public class EIDReader
    {
        /// <summary>
        /// returns true if the device supports QueryOneWireID
        /// false otherwise.
        /// this is a bit strange, since QueryOneWireID is a SLICE Command
        /// and only slice devices should support it, and only some slice
        /// devices at that, however the current code doesn't care so this is
        /// just a helper for 
        /// 22296 No need to query for system ID when querying a TSR AIR device
        /// really a lot of devices probably belong in here, but I'm keeping the 
        /// existing behavior for now...
        /// </summary>
        /// <param name="comm"></param>
        /// <returns>true if device supports QueryOneWireID, false otherwise</returns>
        public static bool SupportsQueryOneWireID(ICommunication comm)
        {
            switch (comm)
            {
                case EthernetTsrAir _:
                case WinUSBTsrAir _:
                    return false;
            }
            return true;
        }
        private static EID[] Retrive_EIDs(ICommunication comm, byte DASChannelNumber, int idType)
        {
            if (!SupportsQueryOneWireID(comm)) { return null; }
            var idList = new List<EID>();
            try
            {
                var IDQuery = new QueryOneWireID(comm);
                IDQuery.StackChannel = DASChannelNumber;
                IDQuery.IdType = (QueryOneWireID.IdTypes)idType;
                IDQuery.SyncExecute();
                if (IDQuery.IDs.Count > 0)
                {
                    for (int i = 0; i < IDQuery.IDs.Count; i++)
                    {
                        idList.Add(new EID(HexEncoding.ToString(IDQuery.IDs[i])));
                    }
                    return idList.ToArray();
                }
            }
            catch (Exception ex)
            {
                APILogger.Log("Failed to retrieve ids", comm.SerialNumber, ex);
            }
            // no id's
            return null;
        }

        private static EID[] Retrive_EIDs(ICommunication comm, int moduleIndex)
        {
            if (!SupportsQueryOneWireID(comm)) { return null; }

            var idList = new List<EID>();
            Command.TDAS.ReadSensorIDs rsi = new Command.TDAS.ReadSensorIDs(comm);
            rsi.ModuleIndex = moduleIndex;
            rsi.SyncExecute();
            if (rsi.IDs != null && rsi.IDs.Count > 0)
            {
                foreach (string id in rsi.IDs)
                {
                    idList.Add(new EID(id));
                }

                return idList.ToArray();
            }
            else { return null; }
        }
        public static IEID[] RetriveEIDs(ICommunication comm, byte DASChannelNumber, int idType)
        {
            //don't return empty set as calstation indexes it if it's not null :/
             if (!SupportsQueryOneWireID(comm)) { return null; }
            //I have to return null here rather than empty set as there's a consumer that automatically index 0 if it's not null 
            //and it's in calstation code, so I want to avoid breaking that
            if (RunTestVariables.BypassEIDRead) { return null; }

            for (int RetryCounter = 0; RetryCounter < 3; RetryCounter++)
            {
                var ids = Retrive_EIDs(comm, DASChannelNumber, idType);
                if (ids != null && ids.Length > 0)
                {
                    bool bValid = true;
                    foreach (var id in ids)
                    {
                        if (!id.IsValid())
                        {
                            bValid = false;
                            string target = "<unknown>";
                            if (comm is IDASCommunication)
                            {
                                target = (comm as IDASCommunication).ToString();
                            }
                            APILogger.LogString(string.Format("EIDReader.RetriveEIDs: Retry for {0} on channel {1}, ID({2})", target, DASChannelNumber, id.ID));
                            break;
                        }
                    }
                    // if we made it here, they're all valid
                    if (bValid) { return ids; }
                }
            }
            return null;
        }
        /// <summary>
        /// blank EID returned by some command queries (TDAS IDX for example)
        /// </summary>
        public const string BLANK_ID = "0000000000000000";
        /// <summary>
        /// returns true if the EID is blank
        /// </summary>
        /// <param name="id"></param>
        /// <returns>true if is blank, false otherwise</returns>
        public static bool IsBlankID(string id)
        {
            return id.Equals(BLANK_ID);
        }
        public static EID[][] RetrieveEIDsG5(ICommunication comm)
        {
            if (RunTestVariables.BypassEIDRead)
            {
                return new EID[0][];
            }

            var eids = new List<EID[]>();
            try
            {
                var idx = new Command.TDAS.RackIDX(comm);
                idx.SyncExecute();
                foreach (var channelIDs in idx.IDs)
                {
                    var ids = new List<EID>();
                    foreach (var channelID in channelIDs)
                    {
                        if (IsBlankID(channelID)) { ids.Add(new EID()); }
                        else { ids.Add(new EID(channelID)); }
                    }
                    eids.Add(ids.ToArray());
                }
            }
            catch (Exception ex)
            {
                APILogger.Log("RetrieveEIDsG5 failed", ex);
            }
            return eids.ToArray();
        }
        public static EID[] RetriveEIDs(ICommunication comm, int moduleIndex)
        {
            if (!SupportsQueryOneWireID(comm)) { return null; }
            for (int RetryCounter = 0; RetryCounter < 3; RetryCounter++)
            {
                var ids = Retrive_EIDs(comm, moduleIndex);
                if (null != ids && ids.Length > 0)
                {
                    for (int i = 0; i < ids.Length; i++)
                    {
                        if (!ids[i].IsValid())
                        {
                            string target = "<unknown>";
                            if (comm is IDASCommunication)
                            {
                                target = (comm as IDASCommunication).ToString();
                            }
                            APILogger.LogString(string.Format("EIDReader.RetreiveEIDS: ID invalid for {0} on module {1}, ID({2})", target, moduleIndex, ids[i].ID));
                            break; ;
                        }
                    }
                    return ids;
                }
            }
            return null;
        }
    }
}