using System.Net;
using System.Net.Sockets;
using System.Text;
using Newtonsoft.Json;
using Stary.Evo;
using UnityEngine;

namespace Server
{
    public interface IServerSocketSystem : ISystem
    {
        /// <summary>
        ///     连接服务器
        /// </summary>
        /// <param name="ip"></param>
        void OnConnect(string ip = "");

        /// <summary>
        ///     向指定客户端发送消息
        /// </summary>
        /// <param name="client">指定客户端</param>
        /// <param name="type">消息类型</param>
        /// <param name="message">消息内容</param>
        void Send(Socket client, SocketEvent type, string message);

        /// <summary>
        ///     向所有客户端发送消息
        /// </summary>
        /// <param name="type">消息类型</param>
        /// <param name="message">消息内容</param>
        void SendAllClient(SocketEvent type, ResultEntity message);


        /// <summary>
        ///     踢出指定客户端
        /// </summary>
        /// <param name="client">指定客户端</param>
        void KickOut(Socket client);


        /// <summary>
        ///     踢出所有客户端
        /// </summary>
        void KickOutAll();
    }


    public class ServerSocketSystem : AbstractSystem, IServerSocketSystem
    {
        private SocketServer _socketServer;

        public override void Dispose()
        {
            // 注意由于Unity编译器环境下，游戏开启/关闭只影响主线程的开关，游戏关闭回调时需要通过Close函数来关闭服务端/客户端的线程。
            if (_socketServer != null) _socketServer.Close();
        }

        /// <summary>
        ///     向指定客户端发送消息
        /// </summary>
        /// <param name="client">指定客户端</param>
        /// <param name="type">消息类型</param>
        /// <param name="message">消息内容</param>
        public void Send(Socket client, SocketEvent type, string message)
        {
            var bytes = Encoding.UTF8.GetBytes(message);
            _socketServer.Send(client, (ushort)type, bytes);
        }

        /// <summary>
        ///     向所有客户端发送消息
        /// </summary>
        /// <param name="type">消息类型</param>
        /// <param name="message">消息内容</param>
        public void SendAllClient(SocketEvent type, ResultEntity message)
        {
            Debug.Log("SendAllClient向客户端发送消息：" + JsonConvert.SerializeObject(message));
            foreach (var item in _socketServer.ClientInfoDic)
            {
                message.SetDeviceCode(item.Value.IP);
                Debug.Log("向客户端发送消息：" + ResultEntity.ToEntityString(message));
                var bytes = Encoding.UTF8.GetBytes(ResultEntity.ToEntityString(message));
                _socketServer.Send(item.Key, (ushort)type, bytes);
            }
        }

        /// <summary>
        ///     服务器踢出客户端
        /// </summary>
        public void KickOut(Socket client)
        {
            // 踢出连接
            _socketServer.KickOut(client);
        }

        /// <summary>
        ///     服务器踢出客户端
        /// </summary>
        public void KickOutAll()
        {
            // 踢出连接
            foreach (var item in _socketServer.ClientInfoDic.Keys)
                _socketServer.KickOutAll();
        }

        public void OnConnect(string ip = "")
        {
            if (string.IsNullOrEmpty(ip))
                ip = "0.0.0.0";
            _socketServer = new SocketServer(ip, 10000);
            _socketServer.OnReceive += OnReceive;
            _socketServer.OnConnect += OnConnect;
            _socketServer.OnDisconnect += OnDisconnect;
            _socketServer.OnHeadTimeOut += OnHeadTimeOut;
        }

        public void OnConnect(Socket client)
        {
            var endPoint = client.RemoteEndPoint as IPEndPoint;
            var clientIp = endPoint?.Address.ToString() ?? "未知IP";
            this.SendEvent(ServerPanelType.QueryClient,
                clientIp, RSSI.Good);
        }

        private void OnDisconnect(Socket client)
        {
            var endPoint = client.RemoteEndPoint as IPEndPoint;
            var clientIp = endPoint?.Address.ToString() ?? "未知IP";
            this.SendEvent(ServerPanelType.QueryClient,
                clientIp, RSSI.Not);
        }

        private void OnHeadTimeOut(Socket client)
        {
            var endPoint = client.RemoteEndPoint as IPEndPoint;
            var clientIp = endPoint?.Address.ToString() ?? "未知IP";
            this.SendEvent(ServerPanelType.QueryClient,
                clientIp, RSSI.Bad);
        }

        protected override void OnInit()
        {
        }

        /// <summary>
        ///     接收客户端消息
        /// </summary>
        /// <param name="client">指定客户端</param>
        /// <param name="data">消息数据</param>
        private void OnReceive(Socket client, SocketDataPack data)
        {
            Debug.LogFormat("[{0}]接收到数据>>>{1} {2}", client.LocalEndPoint, (SocketEvent)data.Type, data.Buff.Length);

            switch ((SocketEvent)data.Type)
            {
                case SocketEvent.ScTest:
                    Debug.LogFormat("接收到测试数据 >>> {0}", Encoding.UTF8.GetString(data.Data));
                    break;
                case SocketEvent.ClientDisconn:
                    Debug.LogFormat("客户端断开连接 >>> {0}", client.LocalEndPoint);
                    break;
            }
        }
    }
}