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

namespace WCS.Core
{
    public class PLC : EntityEx<PLCInfo>
    {
        public bool Ping { get; private set; }

        public PLC(PLCInfo ent, World world) : base(ent)
        {
            if (Configs.PLCAccessorCreater != null)
            {
                Accessor = Configs.PLCAccessorCreater.Create(ent);
            }
            else
                throw new Exception("Configs.PLCAccessorCreater未赋值");

            Task.Run(() =>
            {
                while (true)
                {
                    Ping = ping();
                    Task.Delay(1000).Wait();
                }
                // ReSharper disable once FunctionNeverReturns
            });
        }

        public IPLCAccessor Accessor { get; private set; }

        private bool ping(int timeout = 300)
        {
            var p = new Ping();
            if (Entity.IP == "1") return false;
            var res = p.Send(Entity.IP, timeout);
            return res.Status == IPStatus.Success;
        }
    }

    public interface IPLCAccessorCreater
    {
        IPLCAccessor Create(PLCInfo data);
    }

    public interface IPLCAccessor
    {
        void WriteBytes(ushort db, ushort address, byte[] data);

        byte[] ReadBytes(ushort db, ushort address, ushort length);
    }
}