using Edge.Core.Parser.BinaryParser.Attributes;
using System;
using System.Collections.Generic;

namespace PetroChinaOnlineWatchPlugin.MessageEntity.Outgoing
{
    public abstract class IfsfMessageDataOut
    {
        [Format(1, EncodingType.BIN, -9890)]
        public byte DataIdentifier { get; set; }

        [Format(1, EncodingType.BIN, -9880)]
        public int DataLength { get; protected set; }

        protected List<byte> BcdToBytes(decimal data, int bcdDigits)
        {
            byte bin8Data = 0;
            bin8Data = (byte)(data < 0 ? (bin8Data | 0x80) : (bin8Data & 0x00));
            string strBcd = Math.Abs(data).ToString();
            int index = strBcd.IndexOf('.');
            bin8Data = (byte)(bin8Data + (index >= 0 ? index : strBcd.Length));
            var buffer = new List<byte>() { bin8Data };

            //2 digits per byte
            int divisor = 2;
            strBcd = strBcd.Replace(".", "").PadRight(bcdDigits, '0');
            for (int i = 0; i < strBcd.Length;)
            {
                byte d = Convert.ToByte(strBcd.Substring(i, divisor), 16);
                buffer.Add(d);
                i += divisor;
            }

            return buffer;
        }
    }

    public class DateTimeMessage : IfsfMessageDataOut
    {
        [Format(7, EncodingType.BcdString, -9870)]
        public string Data { get; protected set; }

        public DateTimeMessage(byte dataId, object objData)
        {
            base.DataIdentifier = dataId;
            string strData = objData.ToString();
            DateTime data = DateTime.Parse(string.IsNullOrEmpty(strData) ? "2000-01-01 00:00:00" : strData);
            Data = data.ToString("yyyyMMddHHmmss");
            base.DataLength = Data.Length / 2;
        }

        public override string ToString()
        {
            return $"{DataIdentifier} {DataLength} {Data}";
        }
    }

    public class Bin8Bcd4Message : IfsfMessageDataOut
    {
        [EnumerableFormat("%cascade", -9870)]
        public List<byte> Bcd4Data { get; protected set; }

        public Bin8Bcd4Message(byte dataId, object objData)
        {
            base.DataIdentifier = dataId;
            string strData = objData.ToString();
            decimal data = decimal.Parse(string.IsNullOrEmpty(strData) ? "0" : strData);
            Bcd4Data = BcdToBytes(data, 4);
            base.DataLength = Bcd4Data.Count;
        }

        public override string ToString()
        {
            return $"{DataIdentifier} {DataLength} {Bcd4Data}";
        }
    }

    public class Bin8Bcd6Message : IfsfMessageDataOut
    {
        [EnumerableFormat("%cascade", -9870)]
        public List<byte> Bcd6Data { get; protected set; }

        public Bin8Bcd6Message(byte dataId, object objData)
        {
            base.DataIdentifier = dataId;
            string strData = objData.ToString();
            decimal data = decimal.Parse(string.IsNullOrEmpty(strData) ? "0" : strData);
            Bcd6Data = BcdToBytes(data, 6);
            base.DataLength = Bcd6Data.Count;
        }

        public override string ToString()
        {
            return $"{DataIdentifier} {DataLength} {Bcd6Data}";
        }
    }

    public class Bin8Bcd8Message : IfsfMessageDataOut
    {
        [EnumerableFormat("%cascade", -9870)]
        public List<byte> Bcd8Data { get; protected set; }

        public Bin8Bcd8Message(byte dataId, object objData)
        {
            base.DataIdentifier = dataId;
            string strData = objData.ToString();
            decimal data = decimal.Parse(string.IsNullOrEmpty(strData) ? "0" : strData);
            Bcd8Data = BcdToBytes(data, 8);
            base.DataLength = Bcd8Data.Count;
        }

        public override string ToString()
        {
            return $"{DataIdentifier} {DataLength} {Bcd8Data}";
        }
    }

    public class Bcd4Message : IfsfMessageDataOut
    {
        [Format(2, EncodingType.BCD, -9870)]
        public int Bcd4Data { get; protected set; }

        public Bcd4Message(byte dataId, object objData)
        {
            base.DataIdentifier = dataId;
            string strData = objData.ToString();
            int data = int.Parse(string.IsNullOrEmpty(strData) ? "0" : strData);
            Bcd4Data = data;
            base.DataLength = 2;
        }

        public override string ToString()
        {
            return $"{DataIdentifier} {DataLength} {Bcd4Data}";
        }
    }

    public class Bin8Message : IfsfMessageDataOut
    {
        [Format(1, EncodingType.BIN, -9870)]
        public byte Bin8Data { get; protected set; }

        public Bin8Message(byte dataId, object objData)
        {
            base.DataIdentifier = dataId;
            string strData = objData.ToString();
            byte data = byte.Parse(string.IsNullOrEmpty(strData) ? "0" : strData);
            Bin8Data = data;
            base.DataLength = 1;
        }

        public override string ToString()
        {
            return $"{DataIdentifier} {DataLength} {Bin8Data}";
        }
    }
}