using DotNetty.Transport.Channels;
using DotNetty.Transport.Channels.Sockets;
using JSMachine.WMS.Infrastructure.Helper;
using JSMachine.WMS.Netty.NettyUdp.Transport;
using System;
using System.Text;

namespace JSMachine.WMS.Netty.NettyUdp
{
    public class EchoClientChannelHandler : SimpleChannelInboundHandler<DatagramPacket>
    {
        public static NettyUdpTransport NettyTransport;

        public override void ChannelActive(IChannelHandlerContext context)
        {
            NettyTransport = new NettyUdpTransport(context);
            base.ChannelActive(context);
        }
        
        public override void ChannelReadComplete(IChannelHandlerContext context) => context.Flush();

        public override void ExceptionCaught(IChannelHandlerContext context, Exception exception)
        {
            LogHelper.Error($"JSMachine.WMS.Netty.NettyUdp.EchoClientChannelHandler.ChannelReadComplete 中发生异常，异常信息 {exception.Message}\n{exception.StackTrace}");

            context.CloseAsync();
        }

        public override void HandlerAdded(IChannelHandlerContext context)
        {
            base.HandlerAdded(context);
        }

        public override void HandlerRemoved(IChannelHandlerContext context)
        {
            Console.WriteLine($"服务端{context}下线.");
            base.HandlerRemoved(context);
        }

        protected override void ChannelRead0(IChannelHandlerContext ctx, DatagramPacket msg)
        {
            string msgStr = msg.Content.ToString(Encoding.UTF8);
            NettyTransport.ChannelReadHandle(msgStr);
        }
    }
}