using Edge.Core.Parser.BinaryParser.Attributes;
using Edge.Core.Parser.BinaryParser.MessageEntity;
using System;

namespace PetroChinaOnlineWatchPlugin.MessageEntity
{
    public enum MessageCode
    {
        IFSF_MESSAGE_CODE_APPLICATION = 0,
        IFSF_MESSAGE_CODE_HEARTBEAT = 1,
        IFSF_MESSAGE_CODE_COMMUNICATION = 2
    }

    public enum MessageType
    {
        IFSF_MESSAGE_TYPE_READ = 0x00,
        IFSF_MESSAGE_TYPE_ANSWER = 0x20,
        IFSF_MESSAGE_TYPE_WRITE = 0x40,
        /// <summary>
        /// message type is an event, and need Ack.
        /// </summary>
        IFSF_MESSAGE_TYPE_UNSOLICITED_ACK = 0x60,
        IFSF_MESSAGE_TYPE_UNSOLICITED_WITHOUT_ACK = 0x80,
        IFSF_MESSAGE_TYPE_ACK = 0xE0
    }

    public abstract class MessageBase : MessageTemplateBase
    {
        [Format(1, EncodingType.BIN, -9990)]
        [Range(0, 255, "Recipient subnet must range in 1 to 255")]
        public byte RecipientSubnet { get; set; }

        [Format(1, EncodingType.BIN, -9980)]
        [Range(0, 127, "Recipient node must range in 1 to 127, but now is {0}")]
        public byte RecipientNode { get; set; }

        [Format(1, EncodingType.BIN, -9970)]
        [Range(0, 255, "Originator subnet must range in 1 to 255")]
        public byte OriginatorSubnet { get; set; }

        [Format(1, EncodingType.BIN, -9960)]
        [Range(0, 127, "Originator node must range in 1 to 127, but now is {0}")]
        public byte OriginatorNode { get; set; }

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

        /// <summary>
        /// 000xxxxx (bit map)
        ///     000 indicates the message type is READ 
        ///     xxxxx is the token created by the originator of the message 
        /// 010xxxxx
        ///     010 indicates message type is WRITE
        ///     xxxxx is the token
        /// 111xxxxx
        ///     111 indicates type ACKNOWLEDGE 
        ///     xxxxx is the token
        /// </summary>
        [Format(1, EncodingType.BIN, -9940)]
        public byte RawMessageStatusAndToken { get; protected set; }

        public MessageType MessageType
        {
            get { return (MessageType)(this.RawMessageStatusAndToken & 0xE0); }
            set
            {
                //1F = 0001 1111
                this.RawMessageStatusAndToken = (byte)((this.RawMessageStatusAndToken & 0x1F) + ((byte)value));
            }
        }

        public byte MessageToken
        {
            get { return (byte)(this.RawMessageStatusAndToken & 0x1F); }
            set
            {
                if (value > 0x1F) throw new ArgumentOutOfRangeException("Message Token max value is 0x1F");
                //E0 = 1110 0000
                this.RawMessageStatusAndToken = (byte)((this.RawMessageStatusAndToken & 0xE0) + value);
            }
        }

        public abstract override string ToString();
    }
}