FCC/Applications/PetroChina/PetroChinaOnlineWatchPlugin/MessageTemplateLookup.cs

using Edge.Core.Parser.BinaryParser;
using Edge.Core.Parser.BinaryParser.MessageEntity;
using PetroChinaOnlineWatchPlugin.MessageEntity;
using PetroChinaOnlineWatchPlugin.MessageEntity.Incoming;

namespace PetroChinaOnlineWatchPlugin
{
    public class MessageTemplateLookup : IMessageTemplateLookup
    {
        public MessageTemplateBase GetMessageTemplateByRawBytes(byte[] bytes)
        {
            var type = (MessageType)(bytes[5] & 0xE0);
            if (bytes.Length == 10
                && bytes[0] <= 254 && bytes[0] >= 0
                && bytes[1] <= 254 && bytes[1] >= 0
                && bytes[2] <= 254 && bytes[2] >= 0
                && bytes[3] <= 254 && bytes[3] >= 0
                && (((bytes[4] << 8) + bytes[5]) <= 65534))
                return new HeartBeatIn();
            else if (type == MessageType.IFSF_MESSAGE_TYPE_READ)
                return new ReadMessageIn();
            else if (type == MessageType.IFSF_MESSAGE_TYPE_UNSOLICITED_WITHOUT_ACK || type == MessageType.IFSF_MESSAGE_TYPE_ANSWER
                || type == MessageType.IFSF_MESSAGE_TYPE_WRITE)
                return new AnswerWriteUnsolicitedMessageIn();
            else if (type == MessageType.IFSF_MESSAGE_TYPE_ACK)
                return new AckMessageMessageIn();
            else
                return null;
        }
    }
}