using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Text;
using TouchSocket.Core;
using TouchSocket.Sockets;

namespace SlnMesnac.TouchSocket
{
    public class TcpServer
    {
        private ILogger<TcpServer> _logger;
        private readonly TcpService _service;
        /// <summary>
        /// 接收客户端指令委托
        /// </summary>
        public delegate void ReceivedClientBuffer(byte[] buffer);
        public event ReceivedClientBuffer? ReceivedClientBufferEvent;

        public delegate void RefreshClientInfo(TcpService tcpService);
        public event RefreshClientInfo? RefreshClientInfoEvent;

        public TcpServer(ILogger<TcpServer> logger,TcpService tcpService)
        {
            _logger = logger;
            _service = tcpService;
        }

        public void Init(int serverPort)
        {
            try
            {
                _service.Connecting = (client, e) => {  
                    _logger.LogInformation($"客户端{client.IP}正在接入服务");
                    return EasyTask.CompletedTask;
                };
                _service.Connected = (client, e) => {   
                    _logger.LogInformation($"客户端{client.IP}接入服务成功");
                    RefreshClientInfoEvent?.Invoke(_service);
                    return EasyTask.CompletedTask;
                };
                _service.Disconnected = (client, e) => { 
                    _logger.LogInformation($"客户端{client.IP}断开连接");
                    RefreshClientInfoEvent?.Invoke(_service);
                    return EasyTask.CompletedTask;
                };
                _service.Received = (client, e) =>
                {
                    //从客户端收到信息
                    var mes = Encoding.UTF8.GetString(e.ByteBlock.Buffer, 0, e.ByteBlock.Len);//注意：数据长度是byteBlock.Len

                    byte[] receivedBuffer = new byte[e.ByteBlock.Len];
                    Array.Copy(e.ByteBlock.Buffer, 0, receivedBuffer, 0, e.ByteBlock.Len);
                    ReceivedClientBufferEvent?.Invoke(receivedBuffer);
                    
                    return EasyTask.CompletedTask;
                };

                _service.Setup(new TouchSocketConfig()//载入配置     
                    .SetListenIPHosts(new IPHost[] { new IPHost($"0.0.0.0:{serverPort}") })
                    .ConfigureContainer(a =>//容器的配置顺序应该在最前面
                    {
                        a.AddConsoleLogger();
                    })
                    .ConfigurePlugins(a =>
                    {
                        //自定义插件
                    }));
                _service.Start();
                _logger.LogInformation($"TcpServer启动成功，监听端口：{serverPort}");
            }
            catch (Exception ex)
            {
                //throw new InvalidOperationException($"TcpServer启动异常：{ex.Message}");
                _logger.LogError($"TcpServer启动异常：{ex.Message}");
            }

        }

        /// <summary>
        /// 向所有客户端发送心跳
        /// </summary>
        public void SendHeartBeat()
        {
            var clients = _service.SocketClients.GetClients();
            foreach (var item in clients)
            {
                _service.Send(item.Id,"heartbeat");
            }
        }
    }
}