using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MECF.Framework.Common.Communications;

namespace MECF.Framework.RT.EquipmentLibrary.HardwareUnits.FlowMeters
{
    public abstract class Usf500NHandler : HandlerBase
    {
        public Usf500N Device { get; }
        public byte Address;
        public byte Channel;
        public byte FunctionCode;


        protected Usf500NHandler(Usf500N device, byte address, byte functionCode, byte[] datas)
            : base(BuildMessage(address, functionCode, datas))
        {
            Device = device;

            Address = address;
            FunctionCode = functionCode;


        }

        private static byte[] BuildMessage(byte address, byte command,byte[] datas)
        {
            List<byte> result = new List<byte>() { address, command};
            if (datas != null)
            {
                foreach (byte data in datas)
                    result.Add(data);
            }
            result.AddRange(Calculate_CRC(result.ToArray()));
            return result.ToArray();
        }

        public override bool HandleMessage(MessageBase msg, out bool handled)
        {
            ResponseMessage = msg;
            handled = true;
            return true;
        }


        private static byte[] Calculate_CRC(byte[] buffer)
        {
            ushort X = 0xFFFF;

            for (int i = 0; i < buffer.Length; i++)
            {
                int timeNo = 0;

                while (timeNo < 9)
                {
                    timeNo++;

                    X = (ushort)(X ^ buffer[i]);

                    ushort tempValue = (ushort)(X & 1);

                    X = (ushort)(X >> 1);

                    if (tempValue == 1)
                    {
                        X = (ushort)(X ^ 0xA001);
                    }
                }
            }

            return new byte[] { (byte)(X >> 8), (byte)(X & 0xFF) };


        }
    }

    /// <summary>
    /// 设置组地址

    /// <summary>
    /// 设置机地址

    /// <summary>
    /// 查询最高转速 1
    /// </summary>


    public class Usf500NQueryFlowRateHandler : Usf500NHandler
    {
        private int _channel;
        public Usf500NQueryFlowRateHandler(Usf500N device, byte address, int channel)
            : base(device, address,4,BuildData(channel))
        {
            Name = "QueryFlowRate";
            _channel = channel;
        }

        public override bool HandleMessage(MessageBase msg, out bool handled)
        {
            var result = msg as Usf500NMessage;
            handled = false;
            if (!result.IsResponse) 
                return true;

            Device.ParseFlowRate(Address, (byte)_channel, result.ReadOutData); 

            handled = true;

            return true;
        }



        private static byte[] BuildData(int channel)
        {
            ushort regAdd = (ushort)(channel * 100 + 1);

            byte[] ret = new byte[] { (byte)(regAdd >> 8), (byte)(regAdd & 0xFF),0,1 };
            
            return ret;
        }
    }


    public class Usf500NQueryFlowVolumeHandler : Usf500NHandler
    {
        private int _channel;
        public Usf500NQueryFlowVolumeHandler(Usf500N device, byte address, int channel)
            : base(device, address, 4, BuildData(channel))
        {
            Name = "QueryFlowRate";
            _channel = channel;
        }

        public override bool HandleMessage(MessageBase msg, out bool handled)
        {
            var result = msg as Usf500NMessage;
            handled = false;
            if (!result.IsResponse)
                return true;

            Device.ParseFlowVolume(Address, (byte)_channel, result.ReadOutData);

            handled = true;

            return true;
        }



        private static byte[] BuildData(int channel)
        {
            ushort regAdd = (ushort)(channel * 100 + 2);

            byte[] ret = new byte[] { (byte)(regAdd >> 8), (byte)(regAdd & 0xFF), 0, 1 };

            return ret;
        }
    }


    public class Usf500NResetFlowVolumeHandler : Usf500NHandler
    {
        private int _channel;
        public Usf500NResetFlowVolumeHandler(Usf500N device, byte address, int channel)
            : base(device, address, 6, BuildData(channel))
        {
            Name = "QueryFlowRate";
            _channel = channel;
        }

        public override bool HandleMessage(MessageBase msg, out bool handled)
        {
            var result = msg as Usf500NMessage;
            handled = false;
            if (!result.IsResponse)
                return true;

            //Device.ParseFlowRate(Address, (byte)_channel, result.ReadOutData);

            handled = true;

            return true;
        }



        private static byte[] BuildData(int channel)
        {
            ushort regAdd = (ushort)(channel * 100 + 3);

            byte[] ret = new byte[] { (byte)(regAdd >> 8), (byte)(regAdd & 0xFF), 0, 2 };

            return ret;
        }
    }


}