using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;

namespace VeederRoot_ATG_Console.MessageEntity.Incoming
{
    /// <summary>
    /// i|IA01,Probe Type and Serial Number
    /// </summary>
    public class QueryInTankDiagnosticReportResponse : IncomingMessageBase
    {
        public DateTime? CurrentDateAndTime
        {
            get
            {
                if (base.FunctionCode.Item1 == MessageFormat.Display)
                    return null;
                return DateTime.ParseExact(
                    Encoding.ASCII.GetString(base.DataFieldAndOptionalCheckSumAndETX.Take(10).ToArray()),
                    "yyMMddHHmm", CultureInfo.InvariantCulture);
            }
        }

        public int? TankNumberInFunctionCode
        {
            get
            {
                if (base.FunctionCode.Item1 == MessageFormat.Display)
                    return null;
                var r = int.Parse(base.FunctionCode.Item3);
                return r;
            }
        }

        public IEnumerable<ProbeInfo> Probes
        {
            get
            {
                if (base.FunctionCode.Item1 == MessageFormat.Display)
                    return null;

                // skip 10 bytes of current date and time
                var rawDataBody = base.DataFieldAndOptionalCheckSumAndETX.Skip(10)
                    //and exclude tail of -> && + 4 bytes check sum + ETX <- which is total 7 bytes.
                    .Take(base.DataFieldAndOptionalCheckSumAndETX.Count - 10 - 7);

                var result = new List<ProbeInfo>();
                int elapsed = 0;
                while (true)
                {
                    var buffer = rawDataBody.Skip(elapsed);
                    if (!buffer.Any()) break;
                    result.Add(new ProbeInfo(buffer.Take(27).ToArray()));
                    elapsed += 27;
                }

                return result;
            }
        }

        public override string ToLogString()
        {
            if (base.FunctionCode.Item1 == MessageFormat.Display)
                return Encoding.ASCII.GetString(base.DataFieldAndOptionalCheckSumAndETX.ToArray());
            return "Current DateTime: " + this.CurrentDateAndTime.Value.ToString("yyyy-MM-dd HH:mm")
                + ", TankNumber: " + (this?.TankNumberInFunctionCode ?? -1)
               + " with Diameters list(tankNumber:probeLength:probeSerialNo.)-> "
                + (this.Probes != null && this.Probes.Any() ?
                    this.Probes.Select(p => p.TankNumber + ":" + p.ProbeLength + ":" + p.ProbeSerialNumber).Aggregate((acc, n) => acc + ", " + n)
                    : "");
        }

        public class ProbeInfo
        {
            public enum ProbeType
            {
                CAP0 = 1,
                CAP1 = 2,
                MAG1 = 3,
            }

            private byte[] bytes;
            public ProbeInfo(byte[] bytes)
            {
                if (bytes == null || bytes.Length != 27)
                    throw new ArgumentException("must not null and length must equals 27");
                this.bytes = bytes;
            }

            public int TankNumber
            {
                get
                {
                    var r = int.Parse(Encoding.ASCII.GetString(this.bytes.Take(2).ToArray()));
                    return r;
                }
            }

            public char? ProductCode
            {
                get
                {
                    return
                        Encoding.ASCII.GetString(
                            this.bytes.Skip(2).Take(1).ToArray())[0];
                }
            }

            public ProbeType Type
            {
                get
                {
                    var _ = Enum.Parse(typeof(ProbeType),
                         Encoding.ASCII.GetString(this.bytes.Skip(3).Take(2).ToArray()));
                    return (ProbeType)_;
                }
            }

            public string CircuitCode
            {
                get
                {
                    return Encoding.ASCII.GetString(this.bytes.Skip(5).Take(4).ToArray());
                }
            }

            public double ProbeLength
            {
                get
                {
                    var asciiEncodedBytes = Util.ConvertHexBcdStrToBytes(this.bytes.Skip(9).Take(8).ToArray());
                    var dataValue =
                        Util.ConvertIEEEWith4BytesToDouble(asciiEncodedBytes.ToArray());
                    return dataValue;
                }
            }

            public string ProbeSerialNumber
            {
                get
                {
                    return Encoding.ASCII.GetString(this.bytes.Skip(17).Take(6).ToArray());
                }
            }

            public string ProbeDateCode
            {
                get
                {
                    return Encoding.ASCII.GetString(this.bytes.Skip(23).Take(4).ToArray());
                }
            }
        }
    }
}