using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Reflection;
using Edge.Core.Parser.BinaryParser;
using Edge.Core.Parser.BinaryParser.MessageEntity;
using Edge.Core.Parser.BinaryParser.Util;

namespace Dfs.WayneChina.HengshanTerminalWrapper
{
    #region To be replaced, probably removed

    public class Mapping : ConfigurationElement
    {
        [ConfigurationProperty("code", IsRequired = true)]
        public string CodeRawString
        {
            get
            {
                return this["code"] as string;
            }
        }

        public byte[] Code
        {
            get
            {
                // it matters that starts with 0x or not, need take care differently
                if (this.CodeRawString.ToLower().StartsWith("0x"))
                {
                    return this.CodeRawString.Substring(2).ToBytes();
                }
                else
                {
                    return this.CodeRawString.ToBytes();
                }
            }
        }

        [ConfigurationProperty("type", IsRequired = true)]
        public string TypeRawString
        {
            get
            {
                return this["type"] as string;
            }
        }

        public Type Type
        {
            get { return Assembly.GetAssembly(typeof(MessageTemplateBase)).GetType(this.TypeRawString); }
        }

        [ConfigurationProperty("description", IsRequired = false)]
        public string Description
        {
            get
            {
                return this["description"] as string;
            }
        }
    }

    public class MessageEntityMappingConfig : ConfigurationSection
    {
        public static MessageEntityMappingConfig GetConfig()
        {
            return (MessageEntityMappingConfig)System.Configuration.ConfigurationManager.GetSection("messageEntityMappings");
        }

        [System.Configuration.ConfigurationProperty("Mappings")]
        public MappingCollection Mappings
        {
            get
            {
                object o = this["Mappings"];
                return o as MappingCollection;
            }
        }

    }


    public class PortAndPumpMapping : ConfigurationElement
    {
        //[ConfigurationProperty("port",IsRequired = true)]
        [ConfigurationProperty("port", IsRequired = true)]
        public string PortRawString
        {
            get { return (string)this["port"]; }
        }
        [ConfigurationProperty("pumpId", IsRequired = true)]
        public string PumpIdRawString
        {
            get { return (string)this["pumpId"]; }
        }

        public string Port
        {
            get { return this.PortRawString.Trim(); }
        }

        public int PumpId
        {
            get { return Convert.ToInt32(this.PumpIdRawString.Trim()); }
        }
    }

    public class PortAndPumpMappingCollection : ConfigurationElementCollection
    {
        protected override ConfigurationElement CreateNewElement()
        {
            return new PortAndPumpMapping();
        }

        protected override object GetElementKey(ConfigurationElement element)
        {
            string result = null;
            bool first = true;
            foreach (var s in ((PortAndPumpMapping)element).PortRawString)
            {
                var s1 = s.ToString();
                if (first)
                {
                    first = false;
                    result = s1;
                    continue;
                }
                result = result + s1;
            }
            return result;
        }
    }

    class PortAndPumpMappingConfig : ConfigurationSection
    {
        public static PortAndPumpMappingConfig GetConfig()
        {
            return (PortAndPumpMappingConfig)System.Configuration.ConfigurationManager.GetSection("portAndPumpMappings");
        }

        [System.Configuration.ConfigurationProperty("Mappings")]
        public PortAndPumpMappingCollection Mappings
        {
            get
            {
                object o = this["Mappings"];
                return o as PortAndPumpMappingCollection;
            }
        }

    }

    public class MappingCollection : ConfigurationElementCollection
    {
        //public Mapping this[int index]
        //{
        //    get
        //    {
        //        return base.BaseGet(index) as Mapping;
        //    }
        //    set
        //    {
        //        if (base.BaseGet(index) != null)
        //        {
        //            base.BaseRemoveAt(index);
        //        }
        //        this.BaseAdd(index, value);
        //    }
        //}

        //public new Mapping this[string responseString]
        //{
        //    get { return (Mapping)BaseGet(responseString); }
        //    set
        //    {
        //        if (BaseGet(responseString) != null)
        //        {
        //            BaseRemoveAt(BaseIndexOf(BaseGet(responseString)));
        //        }
        //        BaseAdd(value);
        //    }
        //}

        protected override System.Configuration.ConfigurationElement CreateNewElement()
        {
            return new Mapping();
        }

        protected override object GetElementKey(System.Configuration.ConfigurationElement element)
        {
            return ((Mapping)element).CodeRawString.Select(s => s.ToString()).Aggregate((n, acc) => n + acc);
        }
    }

    #endregion


    public class MessageTemplateLookup : IMessageTemplateLookup
    {
        /// <summary>
        /// Gets the default singleton instance of type MessageTemplateLookup.
        /// </summary>
        public static MessageTemplateLookup Default { get; } = new MessageTemplateLookup();

        /// <summary>
        /// Dictionary that holds the commands and types
        /// </summary>
        private static readonly Dictionary<string, string> messageCodeToTypeStrDict = new Dictionary<string, string>();

        static MessageTemplateLookup()
        {
            messageCodeToTypeStrDict.Add("0xA7", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.AuthPumpWithGallonRequest, Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xA8", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.AuthPumpWithKiloRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xA9", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.AuthPumpWithAmountRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xA0", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.GetNozzleStatusRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xA1", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.SetFuelPriceRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xA4", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.CancelFullMonitorRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xA5", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.OpenRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xA6", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.CloseRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xAA", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.UnAuthorizePumpRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xAB", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.GetTransactionRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xAC", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.GetAccumulateRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xBA", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.GetVersionRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xB0", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.DisplayClockRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xBE", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.DisplayRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xC0", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.ClearRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xC3", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.GetBacklightStatusRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xE5", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.StartRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xE7", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.ReservePumpWithGallonRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xE8", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.ReservePumpWithKiloRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xE9", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.ReservePumpWithAmountRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xEA", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.RoundingRequest,Dfs.WayneChina.HengshanTerminalWrapper");
            messageCodeToTypeStrDict.Add("0xEB", "Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Incoming.RoundUpByVolumeRequest,Dfs.WayneChina.HengshanTerminalWrapper");
        }

        /// <summary>
        /// Create a message entity based on input whole message raw bytes which is: 1bytes Len + 1 byte cmd + variable length
        ///     parameter+1byte check code
        /// </summary>
        /// <param name="bytes">whole message raw bytes</param>
        /// <returns>new created message entity</returns>
        public MessageTemplateBase GetMessageTemplateByRawBytes(byte[] bytes)
        {
            var msgHandleCode = bytes.Skip(2).First();
            var key = "0x" + msgHandleCode.ToString("X").PadLeft(2, '0');
            if (messageCodeToTypeStrDict.ContainsKey(key))
            {
                var found = messageCodeToTypeStrDict[key];
                var t = Type.GetType(found);
                var targetInstance = (MessageTemplateBase)Activator.CreateInstance(t);
                return targetInstance;
            }
            else
            {
                throw new ArgumentException("Can't find correlated message entity type for incoming raw message bytes: " + bytes.Select(s => s.ToString("X").PadLeft(2, '0')).Aggregate((n, acc) => n + " " + acc));
            }
        }
    }
}