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

namespace LanTian_Pump_664_Or_886.MessageEntity.Incoming
{
    public class ReadFuelDataResponse : MessageBase
    {
        /*only used for unit test purpose*/
        public void SetAmountAndVolume(int amount, int volume)
        {
            base.BodyAndXRL = volume.GetBCDBytes(3).Concat(amount.GetBCDBytes(3))
                .Concat(new byte[] { 0x00, 0x00 }).ToList();
        }

        /// <summary>
        /// Without decimal points
        /// </summary>
        public int Volume
        {
            get
            {
                if (base.BodyAndXRL.Count - 2 == 6)
                {
                    /*Model 664*/
                    return base.BodyAndXRL.Take(3).GetBCD();
                }
                else if (base.BodyAndXRL.Count - 2 == 8)
                {
                    /*Model 886*/
                    return base.BodyAndXRL.Take(4).GetBCD();
                }

                throw new InvalidDataException("data body length should either 6 or 8, but now is: " + (base.BodyAndXRL.Count - 1));
            }
        }

        /// <summary>
        /// Without decimal points
        /// </summary>
        public int Amount
        {
            get
            {
                if (base.BodyAndXRL.Count - 2 == 6)
                {
                    /*Model 664*/
                    return base.BodyAndXRL.Skip(3).Take(3).GetBCD();
                }
                else if (base.BodyAndXRL.Count - 2 == 8)
                {
                    /*Model 886*/
                    return base.BodyAndXRL.Skip(4).Take(4).GetBCD();
                }

                throw new InvalidDataException("data body length should either 6 or 8, but now is: " + (base.BodyAndXRL.Count - 1));
            }

        }
    }
}