using Elight.Entity;
using Elight.Logic;
using Elight.Utility;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
using SqlSugar;
using System.Net.WebSockets;
using System.Text;

namespace _24Hour.Controllers.Common
{
    [Authorize]
    public class WebSocketController : Controller
    {
        private readonly SqlSugarClient _db;//数据库
        App_Sys_UserModel _userdata = new App_Sys_UserModel();//当前用户
        private readonly ILogger<LoginController> _logger;//日志
        private static Dictionary<string, WebSocket> CONNECT_POOL = new Dictionary<string, WebSocket>();//用户连接池
        //private static Dictionary<string, List<MessageInfo>> MESSAGE_POOL = new Dictionary<string, List<MessageInfo>>();//离线消息池
        public WebSocketController(ILogger<LoginController> logger, SqlSugarClient db, User user)
        {
            _logger = logger;
            _db = db;
            _userdata = user.Userdata();
        }
        [HttpGet("/ws")]
        public async Task WebSocketServer()
        {
            if (HttpContext.WebSockets.IsWebSocketRequest)
            {
                try
                {
                    var socket = await HttpContext.WebSockets.AcceptWebSocketAsync();
                    ProcessChat(socket);
                }
                catch (Exception ex)
                {
                }
            }
        }
        private async Task ProcessChat(WebSocket socket)
        {
            string user = _userdata.Id;

            try
            {
                #region 用户添加连接池
                //第一次open时，添加到连接池中
                if (!CONNECT_POOL.ContainsKey(user))
                    CONNECT_POOL.Add(user, socket);//不存在，添加
                else
                    if (socket != CONNECT_POOL[user])//当前对象不一致，更新
                    CONNECT_POOL[user] = socket;
                #endregion

                string descUser = string.Empty;//目的用户
                while (true)
                {
                    if (socket.State == WebSocketState.Open)
                    {
                    }
                    else
                    {
                        break;
                    }
                }//while end
            }
            catch (Exception ex)
            {
                //整体异常处理
                if (CONNECT_POOL.ContainsKey(user)) CONNECT_POOL.Remove(user);
            }
        }

        /// <summary>
        /// 消息发送
        /// </summary>
        /// <param name="Sendingdata"></param>
        /// <returns></returns>
        [HttpPost]
        [Route("WebSocketSend")]
        public async Task WebSocketSend(WebSocketSending Sendingdata)
        {
            try
            {
                //获取发送人连接
                var socket = CONNECT_POOL.Where(q => q.Key == _userdata.Id).Select(q => q.Value).First();
                while (true)
                {
                    if (socket.State == WebSocketState.Open)
                    {
                        ArraySegment<byte> buffer = new ArraySegment<byte>(new byte[2048]);
                        WebSocketReceiveResult result = await socket.ReceiveAsync(buffer, CancellationToken.None);

                        #region 消息处理（消息转发）
                        try
                        {
                            #region 关闭Socket处理，删除连接池
                            if (socket.State != WebSocketState.Open)//连接关闭
                            {
                                if (CONNECT_POOL.ContainsKey(_userdata.Id)) CONNECT_POOL.Remove(_userdata.Id);//删除连接池
                                break;
                            }
                            #endregion


                            #region 消息发送
                            var content = JsonConvert.SerializeObject(Sendingdata);
                            buffer = new ArraySegment<byte>(Encoding.UTF8.GetBytes(content));

                            if (CONNECT_POOL.ContainsKey(Sendingdata.recipient))//判断客户端是否在线
                            {
                                WebSocket destSocket = CONNECT_POOL[Sendingdata.recipient];//目的客户端
                                if (destSocket != null && destSocket.State == WebSocketState.Open)
                                    await destSocket.SendAsync(buffer, WebSocketMessageType.Text, true, CancellationToken.None);
                                else
                                {
                                    //添加未读
                                }
                            }
                            else
                            {
                                //添加未读
                                //添加一条未读消息
                                //Task.Run(() =>
                                //{
                                //    if (!MESSAGE_POOL.ContainsKey(descUser))//将用户添加至离线消息池中
                                //        MESSAGE_POOL.Add(descUser, new List<MessageInfo>());
                                //    MESSAGE_POOL[descUser].Add(new MessageInfo(DateTime.Now, buffer));//添加离线消息
                                //});
                            }
                            #endregion
                        }
                        catch (Exception exs)
                        {
                            //消息转发异常处理，本次消息忽略 继续监听接下来的消息
                        }
                        #endregion
                    }
                    else
                    {
                    }
                }//while end
            }
            catch (Exception)
            {
                //整体异常处理
                if (CONNECT_POOL.ContainsKey(_userdata.Id)) CONNECT_POOL.Remove(_userdata.Id);
            }
        }


        /// <summary>
        /// 消息发送
        /// </summary>
        /// <param name="Sendingdata"></param>
        /// <returns></returns>
        [HttpPost]
        [Route("text")]
        public async Task text(WebSocketSending Sendingdata)
        {
            try
            {
                //获取发送人连接
                var socket = CONNECT_POOL.Where(q => q.Key == _userdata.Id).Select(q => q.Value).First();
                while (true)
                {
                    if (socket.State == WebSocketState.Open)
                    {
                        ArraySegment<byte> buffer = new ArraySegment<byte>(new byte[2048]);
                        WebSocketReceiveResult result = await socket.ReceiveAsync(buffer, CancellationToken.None);

                        #region 消息处理（消息转发）
                        try
                        {
                            #region 关闭Socket处理，删除连接池
                            if (socket.State != WebSocketState.Open)//连接关闭
                            {
                                if (CONNECT_POOL.ContainsKey(_userdata.Id)) CONNECT_POOL.Remove(_userdata.Id);//删除连接池
                                break;
                            }
                            #endregion


                            #region 消息发送
                            var content = JsonConvert.SerializeObject(Sendingdata);
                            buffer = new ArraySegment<byte>(Encoding.UTF8.GetBytes(content));
                            await socket.SendAsync(buffer, WebSocketMessageType.Text, true, CancellationToken.None);
                            #endregion
                        }
                        catch (Exception exs)
                        {
                            //消息转发异常处理，本次消息忽略 继续监听接下来的消息
                        }
                        #endregion
                    }
                    else
                    {
                    }
                }//while end
            }
            catch (Exception)
            {
                //整体异常处理
                if (CONNECT_POOL.ContainsKey(_userdata.Id)) CONNECT_POOL.Remove(_userdata.Id);
            }
        }
    }

    /// <summary>
    /// 消息发送
    /// </summary>
    public class WebSocketSending
    {
        /// <summary>
        /// 发送人
        /// </summary>
        public string? sender { get; set; }
        /// <summary>
        /// 发送内容
        /// </summary>
        public string? content { get; set; }
        /// <summary>
        /// 接收人
        /// </summary>
        public string? recipient { get; set; }
        /// <summary>
        /// 类型 0：消息，1：视频地址
        /// </summary>
        public string? type { get; set; }
    }
}