using DotNetty.Transport.Channels;
using JSMachine.WMS.Infrastructure.Helper;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Reactive.Linq;
using System.Threading.Tasks;

namespace JSMachine.WMS.Netty.NettyAsClient.Transport
{
    public static class TransportManager
    {
        /// <summary>
        /// 已连接的客户端
        /// key-ip 一个客户端仅允许一个连接
        /// </summary>

        public static readonly ConcurrentDictionary<string, IChannelHandlerContext> DicClientChannels = new();

        /// <summary>
        /// 移除有问题通道
        /// </summary>
        /// <param name="channel"></param>
        public static void RemoveInActiveChannel(IChannelHandlerContext channel)
        {
            try
            {
                DicClientChannels
               .Where(p => p.Value == channel)
               .Select(p => p.Key)
               .ToList()
               ?.ForEach(p => DicClientChannels.Remove(p, out IChannelHandlerContext channelHandlerContext));
            }
            catch (Exception ex)
            {
                LogHelper.Error($"移除有问题通道出错: {ex.Message} \n {ex.StackTrace}");
            }
        }

        /// <summary>
        /// 指定客户端发送消息
        /// </summary>
        /// <param name="ip"></param>
        /// <param name="msg"></param>
        /// <returns></returns>
        public async static Task<bool> SendMsg(string ip, string msg)
        {
            try
            {
                if (!DicClientChannels.ContainsKey(ip))
                {
                    LogHelper.Error($"{ip}连接失败");
                    return false;
                }

                IChannelHandlerContext channel = DicClientChannels[ip];

                await channel.Channel.WriteAndFlushAsync(msg);
                return true;
            }
            catch (Exception ex)
            {
                LogHelper.Error($"发送消息出错: {ex.Message} \n {ex.StackTrace}");
            }

            return false;
        }

        /// <summary>
        /// 指定客户端发送byte数组
        /// </summary>
        /// <param name="ip"></param>
        /// <param name="msg"></param>
        /// <returns></returns>
        public async static Task<bool> SendMsgByte(string ip, byte[] msg)
        {
            try
            {
                if (!DicClientChannels.ContainsKey(ip))
                {
                    LogHelper.Error($"{ip}连接失败");
                    return false;
                }

                IChannelHandlerContext channel = DicClientChannels[ip];

                await channel.Channel.WriteAndFlushAsync(msg);
                return true;
            }
            catch (Exception ex)
            {
                LogHelper.Error($"发送消息出错: {ex.Message} \n {ex.StackTrace}");
            }

            return false;
        }

        /// <summary>
        /// 发送广播消息
        /// </summary>
        /// <param name="messagePackage"></param>
        public static void BroadcastMsg(string brodCastMsg)
        {
            try
            {
                DicClientChannels.Keys.ToList().ForEach(async key =>
                {
                    await DicClientChannels[key].Channel.WriteAndFlushAsync(brodCastMsg);
                });
            }
            catch (Exception ex)
            {
                LogHelper.Error($"发送广播消息出错: {ex.Message} \n {ex.StackTrace}");
            }
        }
    }
}