using System;
using System.Collections.Generic;
using System.IO.Ports;
using NLog;
using Xylem.Common.Hardware.Interfaces.Ports.SerialPorts;
using Xylem.Common.Utils.Logging;

namespace Xylem.Common.Ui.RfidFunctionalTestApp
{
    internal class Program
    {
        private static readonly Lazy<ILogger> Logger = new Lazy<ILogger>(() =>
        {
            return NLogHelper.CreateOrGetLogger("Program");
        });

        private static RfidSerialPort _rfidComPort;

        private static readonly Byte[] GenesisTest =
        {
            //write privilege level 8 with CRC error
            //0x5B, 0x0C, 0x00, 0x0B, 0x00,
            //0xC4, 0x65,
            //0x00, 0x04, 0x08, 0x00, 0x00, 0x00
            
            //write privilege level 8 with CRC okay
            //0x5B, 0x0C, 0x00, 0x0B, 0x00,
            //0x2D, 0xDC,
            //0x00, 0x04, 0x08, 0x00, 0x00, 0x00

            //read privilege level 
            0x5B, 0x0C, 0x00, 0x09, 0x00,
            0x48, 0xD6,
            0x00, 0x04, 0x00, 0x00, 0x00, 0x00
        };
        private static readonly Byte[] WRiteGenesisPrivilegeLevel8 =
        {
            //write privilege level 8 with CRC okay
            0x5B, 0x0C, 0x00, 0x0B, 0x00,
            0x2D, 0xDC,
            0x00, 0x04, 0x08, 0x00, 0x00, 0x00
        };
        private static readonly Byte[] WriteGenesisDevicePassword =
        {
            //write password with multiple write CMD (keep constant)
            //SY, length    , CMD , next CMD
            0x5B, 0x16, 0x00, 0x0F, 0x00,
            
            //CRC
            0x9B, 0xDD,
            
            //register (keep constant)
            0x01, 0x04,

            //number of writes in multiple write CMD
            0x03, 0x00, 
            
            //login level 8 password "119564D5A8B0" for Genesis Board SN 204707
            //(change for individual Genesis Board)
            0x31, 0x31, 0x39, 0x35, 0x36, 0x34, 0x44, 0x35, 0x41, 0x38, 0x42, 0x30
        };


        private static readonly Byte[] ReadGenesisDevicePcbId =
        {
            //read PCB ID
            0x5b,0x0c,0x00,0x09,0x00,
 
            0x6e,0x35,      // UART
            //,0xab,0xdd,    // RFID

            0x0c,0x04,0x00, 0x00, 0x00, 0x00

        };

        private static readonly SerialPort Sr = new SerialPort
        {
            PortName = "COM57",
            BaudRate = 9600,
            Handshake = Handshake.None,
            Parity = Parity.None,
            StopBits = StopBits.One,
            DataBits = 8
        };

        private static readonly String Ident = $"Port:{Sr.PortName}, Protocol:Request, Type:RFID -";


        private static void Main()
        {
            //var uartPort = new SerialPort("COM26", 9600, Parity.None, 8, StopBits.One);
            //uartPort.Handshake = Handshake.None;
            //uartPort.Open();

            //var transmit = new RfidTransmitProtocol("COMXX");

            //_rfidComPort = new RfidSerialPort( Ident, Sr, transmit.GetTransmitPortSettings());


            //0x0B12F0590434C524
            //39 12 F0 59 04 34 C5 24
            //39 83 C8 58 05 C3 E4 24
            //EA 27 F0 59 04 34 C5 24
            //FF 11 F0 59 03 66 10 24
            //45 12 F0 59 03 66 10 24
            
            UInt64 processorUid = 0x0311F05903661024;
            var key =  $"{(UInt16)((processorUid >> 48) ^ (processorUid >> 32)):X4}" +
       $"{(UInt32)((processorUid >> 16) ^ processorUid):X8}";



            //F348F33F1342
            

            _rfidComPort.Open();
            //send the data to RFID
            SendDataViaRfid(GenesisTest);

            //SendDataViaRfid(ReadGenesisDevicePcbId);

            //uartPort.DataReceived += UartPort_DataReceived;
            //uartPort.Write(ReadGenesisDevicePcbId, 0, ReadGenesisDevicePcbId.Length);

            //SendDataViaRfid(WRiteGenesisPrivilegeLevel8);
            //SendDataViaRfid(WriteGenesisDevicePassword);
            _rfidComPort.Dispose();
            Console.ReadLine();
        }

        private static void UartPort_DataReceived(Object sender, SerialDataReceivedEventArgs e)
        {
            var sr = ((SerialPort)sender);

            var rxStringCommandchannel = new List<Byte>();
            sr.ReadTo("["); //ASCII value for 0x5B
            var length = (Byte)sr.ReadChar();
            rxStringCommandchannel.Add(length);
            for (UInt16 i = 0; i < length - 1; i++)
                rxStringCommandchannel.Add((Byte)sr.ReadByte());

        }


        public static void SendDataViaRfid(Byte[] data)
        {
            Logger.Value.Trace($"{Ident} sent: {BitConverter.ToString(data)}");
            //this routine prepares the "UART" commands via RFID
            PrintMessage("UART Tx: ", data, DateTime.Now);
            Console.Write("\n");
            //remind start time for communication
            var txStartTime = DateTime.Now;
            
            //send the data to RFID
            _rfidComPort.SendDataViaRfid(data);

            RfidRxState rfidState;

            //call state machine until ready
            do
            {
                //get RFID Tx and Rx buffer, these are being assembled after return from 
                //the state machine routine
                PrepareAndDisplayRfidMessages(txStartTime);
                txStartTime = DateTime.Now;
                rfidState = _rfidComPort.RfidCommStateMachine();

            } while (RfidRxState.CommunicationFinished != rfidState &&
                     RfidRxState.CommunicationFailed != rfidState);

            //get assembled answer from water meter
            var waterMeterRxData = _rfidComPort.GetDecodedDataFromRfid();
            PrintMessage("UART Rx: ", waterMeterRxData, DateTime.Now);
            var commCounter = _rfidComPort.GetRfidComCounter();
            Console.WriteLine(RfidRxState.CommunicationFinished == rfidState
                ? "\nRFID communication successful!"
                : "\nRFID COMMUNICATION FAILED!");
            Console.WriteLine("RFID packets {0}", commCounter);
            Console.Write("\n");
            Console.Write("\n");

        }
        public static void PrepareAndDisplayRfidMessages(DateTime txDate)
        {
            var rfidRxBuffer = _rfidComPort.GetRfidRxBuffer();
            var rfidTxBuffer = _rfidComPort.GetRfidTxBuffer();
            const String rfidRxText = "RFID Rx: ";
            const String rfidTxText = "RFID Tx: ";
            PrintMessage(rfidTxText, rfidTxBuffer, txDate);
            PrintMessage(rfidRxText, rfidRxBuffer, DateTime.Now);
            Console.Write("\n");
        }

        public static void PrintMessage(String text, Byte[] buffer, DateTime date)
        {
            var addSpace = true;
            Console.Write("{0:D2}:{1:D2}:{2:D3} " + text, date.Minute, date.Second,
                date.Millisecond);
            foreach (var t in buffer)
            {
                if (addSpace)
                {
                    Console.Write("{0:X2} ", t);
                    addSpace = false;
                }
                else
                {
                    Console.Write("{0:X2}", t);
                    addSpace = true;
                }
            }
            Console.Write("\n");

        }

    }
}