using Edge.Core.Parser.BinaryParser.Attributes;
using Edge.Core.Parser.BinaryParser;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Edge.Core.Parser.BinaryParser.MessageEntity;
using static VeederRoot_ATG_Console.MessageEntity.MessageBase;

namespace VeederRoot_ATG_Console.MessageEntity
{
    public static class FunctionCodeWrapper
    {
        private static List<Tuple<string, FuncCode, MessageFormat>> map
            = new List<Tuple<string, FuncCode, MessageFormat>>()
            {
                new Tuple<string, FuncCode, MessageFormat>("i201",
                    FuncCode.QueryInTankInventoryReport, MessageFormat.Computer ),
                new Tuple<string, FuncCode, MessageFormat>("I201",
                    FuncCode.QueryInTankInventoryReport, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("i501",
                    FuncCode.QueryTimeOfDay, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("I501",
                    FuncCode.QueryTimeOfDay, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("s501",
                    FuncCode.SetTimeOfDay, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("S501",
                    FuncCode.SetTimeOfDay, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("i205",
                    FuncCode.QueryInTankStatusReport, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("I205",
                    FuncCode.QueryInTankStatusReport, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("i20C",
                    FuncCode.QueryInTankMostRecentDeliveryReport, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("I20C",
                    FuncCode.QueryInTankMostRecentDeliveryReport, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("i505",
                    FuncCode.QuerySystemTypeAndLanguageFlags, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("I505",
                    FuncCode.QuerySystemTypeAndLanguageFlags, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("i517",
                    FuncCode.QuerySystemTypeAndLanguageFlags_Extended, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("I517",
                    FuncCode.QuerySystemTypeAndLanguageFlags_Extended, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("s505",
                    FuncCode.SetSystemTypeAndLanguageFlags, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("S505",
                    FuncCode.SetSystemTypeAndLanguageFlags, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("i602",
                    FuncCode.QueryTankProductLabel, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("I602",
                    FuncCode.QueryTankProductLabel, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("s602",
                    FuncCode.SetTankProductLabel, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("S602",
                    FuncCode.SetTankProductLabel, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("i607",
                    FuncCode.QueryTankDiameter, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("I607",
                    FuncCode.QueryTankDiameter, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("s607",
                    FuncCode.SetTankDiameter, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("S607",
                    FuncCode.SetTankDiameter, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("i101",
                    FuncCode.QuerySystemStatusReport, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("I101",
                    FuncCode.QuerySystemStatusReport, MessageFormat.Display),

                new Tuple<string, FuncCode, MessageFormat>("iA01",
                    FuncCode.QueryInTankDiagnosticReport, MessageFormat.Computer),
                new Tuple<string, FuncCode, MessageFormat>("IA01",
                    FuncCode.QueryInTankDiagnosticReport, MessageFormat.Display)

            };

        /// <summary>
        /// Convert 6 digits raw code into a pre-defined function code and its format.
        /// </summary>
        /// <param name="rawCode">Length is 6, started with an upper or lower case alphabet, like i00100, I00100, s00200, S00200</param>
        /// <returns>null indicates could not find correlated pre-defined function code</returns>
        public static Tuple<MessageFormat, FuncCode> FromRawCode(string rawCode)
        {
            return map.Where(c => rawCode.StartsWith(c.Item1))
                .Select(s => new Tuple<MessageFormat, FuncCode>(s.Item3, s.Item2)).FirstOrDefault();
        }

        /// <summary>
        /// Get a length 4 raw code string.
        /// </summary>
        /// <param name="messageFormat"></param>
        /// <param name="functionCode"></param>
        /// <returns>length 4 string with an 1 digit alphabet + 3 digits numbers</returns>
        public static string ToRawCode(MessageFormat messageFormat, FuncCode functionCode)
        {
            return map.Where(c => c.Item2 == functionCode && c.Item3 == messageFormat)
                .Select(s => s.Item1).FirstOrDefault();
        }
    }

    public abstract class MessageBase : MessageBaseGeneric
    {
        public enum MessageFormat
        {
            /// <summary>
            /// started with a lower case alphabet.
            /// indicates the message is a stream of numbers without any formatting characters, no carriage return,
            /// line feed, spaces, labels and etc.
            /// 
            /// SOH + FunctionCode + DataField + && + Checksum + ETX
            /// </summary>
            Computer,

            /// <summary>
            /// started with a upper case alphabet.
            /// indicates the message is intended for display to a CRT or printer, it includes all the necessary
            /// formatting characters such as carriage returns, line feeds, nulls, spaces, labels and etc.
            /// 
            /// SOH + FunctionCode + DataField + ETX
            /// </summary>
            Display,
        }

        public enum FuncCode
        {
            /// <summary>
            /// i|I50500
            /// </summary>
            QuerySystemTypeAndLanguageFlags,

            /// <summary>
            /// i|I51700
            /// </summary>
            QuerySystemTypeAndLanguageFlags_Extended,

            /// <summary>
            /// s|S50500UL, U is system units, L is system language.
            /// </summary>
            SetSystemTypeAndLanguageFlags,

            /// <summary>
            /// Append i|I, response function code is i|I201.
            /// </summary>
            QueryInTankInventoryReport,

            /// <summary>
            /// Append i|I, response function code is i|I501.
            /// </summary>
            QueryTimeOfDay,

            /// <summary>
            /// Append s|S, response function code is s|S501.
            /// </summary>
            SetTimeOfDay,

            /// <summary>
            /// Append i|I, response function code is i|I205.
            /// </summary>
            QueryInTankStatusReport,

            /// <summary>
            /// Append i|I, response functin code is i|I20C.
            /// </summary>
            QueryInTankMostRecentDeliveryReport,

            /// <summary>
            /// Append i|I, response functin code is i|I602.
            /// </summary>
            QueryTankProductLabel,

            /// <summary>
            /// Append s|S, response functin code is i|I602.
            /// </summary>
            SetTankProductLabel,

            /// <summary>
            /// Append i|I, response functin code is i|I607.
            /// </summary>
            QueryTankDiameter,

            /// <summary>
            /// Append s|S, response functin code is i|I607.
            /// </summary>
            SetTankDiameter,

            /// <summary>
            /// Append i|I, response functin code is i|I10100.
            /// </summary>
            QuerySystemStatusReport,

            /// <summary>
            /// Append i|I, response functin code is i|IA01.
            /// Probe Type and Serial Number
            /// </summary>
            QueryInTankDiagnosticReport,

            Undefined,
        }

        [Format(1, EncodingType.BIN, -9999)]
        public byte SOH { get; set; } = 0x01;

        /// <summary>
        /// Gets or sets the function code raw value for the message, it's a 6 digits string, like S60201
        /// In most case you should not use this property directly, try use more friendly property `FunctionCode`
        /// </summary>
        [Format(6, EncodingType.ASCII, -9000)]
        public string FunctionCodeRaw { get; set; }

        /// <summary>
        /// Gets or sets the function code, it include 3 parts: 
        ///     MessageFormat(1st digits) + functionCode(3 digits) + appendix(2 digits)
        /// </summary>
        public Tuple<MessageFormat, FuncCode, string> FunctionCode
        {
            get
            {
                var c = FunctionCodeWrapper.FromRawCode(this.FunctionCodeRaw);
                return new Tuple<MessageFormat,
                    FuncCode,
                    string>(
                        c.Item1,
                        c.Item2,
                        this.FunctionCodeRaw.Substring(4, 2));
            }
            set
            {
                var raw = FunctionCodeWrapper.ToRawCode(value.Item1, value.Item2);
                if (string.IsNullOrEmpty(raw))
                    throw new ArgumentException("Can't find raw function code for: " + value.Item1 + " - " + value.Item2);
                if (!string.IsNullOrEmpty(value.Item3))
                    raw += value.Item3.PadLeft(2, '0');
                else
                    raw = raw.PadRight(6, '0');
                if (raw.Length != 6) throw new ArgumentException("Function code must have length 6, but now is " + raw.Length);
                this.FunctionCodeRaw = raw;
            }
        }
    }
}