using Edge.Core.Parser.BinaryParser.MessageEntity;
using Edge.Core.Parser.BinaryParser.Attributes;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Edge.Core.Parser.BinaryParser.Util;

namespace Wayne_Pump_Dart.MessageEntity
{
    public enum ControlCharacter
    {
        POLL = 0x20,
        DATA = 0x30,
        ACK = 0xC0,
        NAK = 0x50,
        EOT = 0x70,
        AckPoll = 0xE0,
    }

    public class MessageBase : MessageTemplateBase
    {
        /// <summary>
        /// physical pump side address, must range from 0x50 to 0x6F
        /// </summary>
        [Format(1, EncodingType.BIN, -9999)]
        [Range(0x50, 0x6F, "Wayne Dart pump address must be range from {1} to {2}, but actual is {0}")]
        public byte Adrs { get; set; }

        [Format(1, EncodingType.BIN, -9950)]
        public byte CtrlCharAndBlockSeqNoRaw { get; set; }

        /// <summary>
        /// high 4 bits of ControlCharacterAndBlockSeqNumberRaw.
        /// </summary>
        public ControlCharacter ControlCharacter
        {
            get
            {
                var r = Enum.ToObject(typeof(ControlCharacter),
                    CtrlCharAndBlockSeqNoRaw & 0xF0);
                return (ControlCharacter)r;
            }
            set
            {
                this.CtrlCharAndBlockSeqNoRaw =
                    this.CtrlCharAndBlockSeqNoRaw.SetBit(4, 7, (int)value >> 4);
            }
        }

        /// <summary>
        /// from low 4 bits of ControlCharacterAndBlockSeqNumberRaw, range from 0x00 to 0x0F.
        /// </summary>
        public byte BlockSeqNumber
        {
            get
            {
                return (byte)(CtrlCharAndBlockSeqNoRaw & 0x0F);
            }
            set
            {
                this.CtrlCharAndBlockSeqNoRaw =
                    this.CtrlCharAndBlockSeqNoRaw.SetBit(0, 3, (int)value);
            }
        }

        [EnumerableFormat("%cascade", -9920)]
        public List<TransactionData> TransactionDatas { get; set; }

        //[EnumerableFormat(4, 9999)]
        //public virtual List<byte> CRC_ETX_SF { get; set; }
        public override string ToLogString()
        {
            if (this.ControlCharacter == ControlCharacter.EOT)
                return "EOT(Adrs: 0x" + this.Adrs.ToString("X").PadLeft(2, '0') + ", SeqNo: 0x" + this.BlockSeqNumber.ToString("X").PadLeft(2, '0') + ")";
            else if (this.ControlCharacter == ControlCharacter.ACK)
                return "ACK(Adrs: 0x" + this.Adrs.ToString("X").PadLeft(2, '0') + ", SeqNo: 0x" + this.BlockSeqNumber.ToString("X").PadLeft(2, '0') + ")";
            else
                return base.ToLogString();
        }
    }

    public class TransactionData : IFormattable
    {
        [Format(1, EncodingType.BIN, -9999)]
        public byte TransactionNumber { get; set; }
        [Format(1, EncodingType.BIN, -9990)]
        public int Length { get; set; }
        [EnumerableFormat("Length", -9950)]
        public List<byte> RawData { get; set; }

        public string ToString(string format, IFormatProvider formatProvider)
        {
            /* these TransactioNumber have different meanings for 
             request and response, here the implementation is only 
             for response(from pump to FC) */
            // Pump status
            if (this.TransactionNumber == 1)
            {
                switch (this.RawData.First())
                {
                    case 0: return "PUMP NOT PROGRAMMED";
                    case 1: return "RESET";
                    case 2: return "AUTHORIZED";
                    case 4: return "FILLING";
                    case 5: return "FILLING COMPLETED";
                    case 6: return "MAX AMOUNT/VOLUME REACHED";
                    case 7: return "SWITCHED OFF";
                    case 8: return "SUSPENDED";
                }
            }
            // Filled volume and amount
            else if (this.TransactionNumber == 2)
            {
                return "Filled volume and amount";
            }
            // Nozzle status and filling price
            else if (this.TransactionNumber == 3)
            {
                return "Nozzle status and filling price";
            }
            // Total Counters 
            else if (this.TransactionNumber == 0x65)
            {
                return "Total Counters";
            }

            return "";
        }
    }
}