using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace NearCardAttendance.Service.TcpServer.Protocol
{

    public class ProtocolParser
    {
        public int MessageLength { get; private set; } = default!;

        public string FuncNo { get; private set; } = default!;

        public string SeqNo { get; private set; } = default!;

        public string Data { get; private set; } = default!;
        //private string _protocolString { get; set; } = default!;
        public ProtocolParser(string protocolString)
        {
            ParseProtocolString(protocolString);
            //_protocolString = protocolString;
        }

        private void ParseProtocolString(string protocolString)
        {
            try
            {
                _ = int.TryParse(protocolString.AsSpan(0, 4), out int messageLength);
                MessageLength = messageLength;
                FuncNo = protocolString.Substring(4,2);
                SeqNo = protocolString.Substring(6,4);  
                Data = protocolString.Substring(10).TrimEnd();
            }
            catch (Exception e)
            {
                
                Console.WriteLine($"Error: {e.Message}");
                // throw new ArgumentException("Invalid protocol string format.");
            }
        }
    }


     
}