using Assets.Scenes.Ride.Scripts.Model;
using Assets.Scenes.Ride.Scripts.Network;
using Assets.Scripts;
using Assets.Scripts.Apis;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace Assets.Scenes.Ride.Scripts
{
    public class MapUDPService
    {
        private static IService _udpService;
        //private static UdpClient udpClient;
        //private static IPEndPoint iPEndPoint;
        private static bool isExit = false;
        //private static Task task = null;
        //private static CancellationTokenSource cts { get; set; }
        private static CancellationToken ct { get; set; }
        //private static List<OnlineUser> onlineUsers { get; set; } = new List<OnlineUser>();
        private static System.Timers.Timer heartbeat { get; set; }
        public static bool Pause { get; set; } = false;

        private static OnlineUserHelper _onlineUserHelper;
        private static OnlineUserHelper onlineUserHelper
        {
            get
            {
                if (_onlineUserHelper == null)
                {
                    _onlineUserHelper = new OnlineUserHelper();
                }
                return _onlineUserHelper;
            }
        }
        private static DateTime LastActiveTime = DateTime.Now;
        private static List<ReceiveMsgModel> msgs = new List<ReceiveMsgModel>();
        /// <summary>
        /// 初始化（如果UDP服务未启动，则会已没5秒一次不断尝试，直到连接上为止,前端不需要考虑任何UDP连接的事情）
        /// </summary>
        public static void Init(int competitionid = 0, bool isWatch = false)
        {
            try
            {
                Competitionid = competitionid;
                IsWatch = isWatch;
                //var ddd = new MapWorkoutService().GetRealOnlineUserInfo(new List<int> { 6 });
                isExit = false;
                Pause = false;

                if (_udpService == null)
                {
                    _udpService = new TcpService1();

                    _udpService.Start(list =>
                    {
                        LastActiveTime = DateTime.Now;
                    //onlineUserHelper.RemoveExceptionData(list);
                    msgs = list;
                        onlineUserHelper.SetOnlineUser(msgs);
                    });

                    heartbeat = new System.Timers.Timer();
                    heartbeat.Interval = 1000;
                    heartbeat.AutoReset = true;
                    heartbeat.Enabled = true;
                    heartbeat.Elapsed += Heartbeat_Elapsed;
                }

            }
            catch (Exception e)
            {
                Trace.WriteLine("UDP:" + e.Message);
            }
            finally
            {
                //发送一条心跳包
                //SendHeartbeat();
                //告诉tcp服务器gzip
            }
        }

        private static void Heartbeat_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            var now = DateTime.Now;
            //超过一秒没有收到消息
            Console.WriteLine($"Heartbeat_Elapsed{(now - LastActiveTime).TotalSeconds}");
            if ((now - LastActiveTime).TotalSeconds > 1)
            {
                onlineUserHelper.SetOnlineUser(new List<ReceiveMsgModel>());
            }
#if UNITY_IOS
            //超过5s没收到消息断开重连一次
            if ((now - LastActiveTime).TotalSeconds > 5)
            {
                LastActiveTime = now;
                _udpService.Disconnect();
            }
#endif
            if (now.Second % 20 == 0)
            {
                //LastActiveTime = now;
                SendHeartbeat();
            }
        }

        public static byte[] Compress(string text)
        {
            var bytes = Encoding.Unicode.GetBytes(text);
            using (var mso = new MemoryStream())
            {
                using (var gs = new GZipStream(mso, CompressionMode.Compress))
                {
                    gs.Write(bytes, 0, bytes.Length);
                }
                return mso.ToArray();
            }
        }

        public static string Decompress(byte[] data)
        {
            // Read the last 4 bytes to get the length
            byte[] lengthBuffer = new byte[4];
            Array.Copy(data, data.Length - 4, lengthBuffer, 0, 4);
            int uncompressedSize = BitConverter.ToInt32(lengthBuffer, 0);

            var buffer = new byte[uncompressedSize];
            using (var ms = new MemoryStream(data))
            {
                using (var gzip = new GZipStream(ms, CompressionMode.Decompress))
                {
                    gzip.Read(buffer, 0, uncompressedSize);
                }
            }
            return Encoding.Unicode.GetString(buffer);
        }
        /// <summary>
        /// 发送心跳包
        /// </summary>
        private static void SendHeartbeat()
        {
            try
            {
                var model = new 
                {
                    CommandType = 0,
                };
                var sendBytes = Encoding.UTF8.GetBytes(Newtonsoft.Json.JsonConvert.SerializeObject(model));
                _udpService.Send(sendBytes, sendBytes.Length);
            }
            catch (Exception e)
            {
                Console.WriteLine("发送心跳失败：" + e);
            }
        }
        public static int Competitionid { get; set; }

        public static bool IsWatch { get; set; }
        /// <summary>
        /// 告诉TCP服务器给我Gzip的格式
        /// </summary>
        public static void SendGizpModel()
        {
            LastActiveTime = DateTime.Now;
            var client = App.AppVersion;
#if UNITY_ANDROID
            client = "Unity-Android" + App.AppVersion;
#elif UNITY_IOS
            client = "Unity-ios" + App.AppVersion; 
#else
            client = "Unity" + App.AppVersion; 
#endif
            try
            {
                var model = new GzipMsgModel
                {
                    CommandType = 2,
                    V = 2,
                    Encoding = "gzip",
                    Client = client,
                    MemberId = App.CurrentUser.Id,
                    Competitionid = Competitionid,
                    IsWatch = IsWatch
                };
                var sendBytes = Encoding.UTF8.GetBytes(Newtonsoft.Json.JsonConvert.SerializeObject(model));
                _udpService.Send(sendBytes, sendBytes.Length);
            }
            catch (Exception e)
            {
                Console.WriteLine("发送失败：" + e);
            }
        }
        /// <summary>
        /// 发送数据
        /// </summary>
        /// <param name="RouteId">路书Id</param>
        /// <param name="MemberId">用户id</param>
        /// <param name="Point">当前点位</param>
        /// <param name="prop">属性</param>
        /// <param name="IsCompleted">是否完成</param>
        /// <param name="exit">是否退出</param>
        public static void Send(int RouteId, int MemberId, double[] Point, bool IsCompleted = false, bool exit = false,
            double endDistance = 0, bool showVirtual = false, byte commandType = 1, double speed = 0, bool isVirtual = false, double preDistance = 0,
            double weightKg = 0, int competitionId = 0, bool saved = false,double? heartRate = 0, double power = 0, double? cadence = 0,int totalTicks = 0)
        {
            try
            {
                Point[0] = Math.Round(Point[0], 6, MidpointRounding.AwayFromZero);
                Point[1] = Math.Round(Point[1], 6, MidpointRounding.AwayFromZero);
                var model = new MsgModel
                {
                    RouteId = RouteId,
                    MemberId = MemberId,
                    Point = Point,
                    IsCompleted = IsCompleted,
                    //exit = exit,
                    EndDistance = endDistance,
                    //ShowVirtual = showVirtual,
                    CommandType = commandType,
                    Speed = speed,

                    Power = power,
                    HeartRate = heartRate,
                    Cadence = cadence,
                    TotalTicks = totalTicks,

                    //IsVirtual = isVirtual,
                    PreDistance = preDistance,
                    WeightKg = weightKg,
                    Competitionid = competitionId,
                    Saved = saved,
                    //V = 1
                };
                var sendBytes = Encoding.UTF8.GetBytes(Newtonsoft.Json.JsonConvert.SerializeObject(model));
                _udpService.Send(sendBytes, sendBytes.Length);

            }
            catch (Exception e)
            {
                Console.WriteLine("发送失败：" + e);
            }
        }

        public static void Dispose()
        {
            try
            {
                isExit = true;
                if (MapUDPService._udpService == null) return;
                for (int i = 0; i < 3; i++)
                {
                    Send(0, App.CurrentUser.Id, new double[] { 1, 1 }, true, isExit);
                }
                _udpService.Close();

                //task.Dispose();
                _udpService = null;
                _onlineUserHelper = null;
            }
            catch (Exception)
            {
            }
            finally
            {
                if (_udpService != null)
                {
                    _udpService.Close();
                }
                //停止计时
                if (heartbeat != null)
                {
                    heartbeat.Stop();
                    heartbeat.Close();
                }
            }
        }



        public static OnlineUser GetOnlineUserLastDataById(int userId)
        {
            //return _onlineUserHelper.GetOnlineUserLastDataById(userId);
            //var msg = msgs.Where(m => m.MemberId == userId);
            //if (msg == null) return null;
            return onlineUserHelper.OnlineUsers.FirstOrDefault(u => u.Id == userId);
        }

        /// <summary>
        /// 根据路书获取在线用户(非比赛用户不能看到比赛中的用户)
        /// </summary>
        /// <param name="routeId"></param>
        /// <returns></returns>
        public static List<OnlineUser> GetOnlineUsers(params int[] routeId)
        {
            var result = onlineUserHelper.OnlineUsers.Where(u => routeId.Contains(u.RouteId) && u.CompetitionId == 0).ToList();

            return result;
        }

        public static List<OnlineUser> GetAllOnlineUserList()
        {
            var result = onlineUserHelper.OnlineUsers.Where(c => !c.IsSelf).ToList();
            return result;
        }

        //比赛中的人只能看到当前比赛的人
        public static List<OnlineUser> GetCompetitionOnlineUsers(int competitionId)
        {
            var result = onlineUserHelper.OnlineUsers.Where(u =>  u.CompetitionId == competitionId && !u.IsWatcher).ToList();
            //var result = onlineUserHelper.OnlineUsers.Where(u =>!u.IsWatcher).ToList();
            return result;
        }
        //当前比赛观察者
        public static List<OnlineUser> GetCompetitionWatchers(int competitionId,int size = 5)
        {
            //var result = onlineUserHelper.OnlineUsers.Where(u => u.CompetitionId == competitionId && u.IsWatcher).Take(size).ToList();
            var result = onlineUserHelper.OnlineUsers.Where(u =>u.IsWatcher).Take(size).ToList();
            return result;
        }

        public static int GetNearRiderCount()
        {
            int count = 0;
            try
            {
                count = onlineUserHelper.OnlineUsers.Where(c => (c.Point[0] != 0 && c.Point[1] != 0) && (c.Point[0] != -1 && c.Point[1] != -1)).Count();
            }
            catch (Exception)
            {

            }
            return count;
        }

        public static int GetAllOnlineUserCount()
        {
            int count = 0;
            try
            {
                count = onlineUserHelper.OnlineUsers.Count();
            }
            catch (Exception)
            {

            }
            return count;
        }
        /// <summary>
        /// 获取附近的人(当前在线的所有人)
        /// </summary>
        /// <returns></returns>
        public static IList<NearRiderModel> GetNearRiderData(int pageIndex, int pageSize = 5, double[] point = null)
        {
            if (point == null) return null;
            try
            {
                var dict = new List<System.Tuple<double, OnlineUser>>();
                var allOnlineUsers = onlineUserHelper.OnlineUsers.Where(c => c.CompetitionId == 0);
                foreach (var item in allOnlineUsers)
                {
                    if (item.Id == App.CurrentUser.Id)
                    {
                        dict.Add(new Tuple<double, OnlineUser>(0, item));
                        continue;
                    }
                    if (item.Point[0] != 0 && item.Point[1] != 0)
                    {
                        var distance = Math.Round(TurfHelper.GetDistances(point, item.Point) / 1000, 2);
                        dict.Add(new Tuple<double, OnlineUser>(distance, item));
                    }
                }
                var allList = dict.OrderBy(d => d.Item1);//.Select(d=>d.Item2);
                var list = allList.Skip((pageIndex - 1) * pageSize).Take(pageSize).ToList();

                var nearData = list.Select(n => new NearRiderModel()
                {
                    Headimage = n.Item2.HeadImage,
                    Name = n.Item2.Name,
                    Near = n.Item1, //Math.Round(TurfHelper.GetDistances(point, n.Point) / 1000, 2),
                    KGWeight = n.Item2.WeightKg.ToString(),
                    Speed = Math.Round(n.Item2.Speed, 1),
                    CountryImg = App.Host + $"User/GetCountryImg?userid={n.Item2.Id}",
                    IsSelf = n.Item2.IsSelf,
                    Id = n.Item2.Id,
                    Country = n.Item2.Country,
                }).ToList();
                return nearData;
            }
            catch (Exception)
            {

                return null;
            }
        }

        private class OnlineUserHelper
        {
            //public static List<OnlineUser> users { get; private set; }
            private static readonly object locker = new object();


            private readonly List<OnlineUser> onlineUsers = new List<OnlineUser>();
            public List<OnlineUser> OnlineUsers
            {
                get
                {
                    //if((DateTime.Now - LastActiveTime).TotalSeconds > 1)
                    //{
                    //    SetOnlineUser(new List<ReceiveMsgModel>());
                    //}
                    return onlineUsers.ToList();
                }
            }

            /// <summary>
            /// 设置在线的人员
            /// </summary>
            public void SetOnlineUser(List<ReceiveMsgModel> mes)
            {
                try
                {
                    var msgs = RemoveExceptionData(mes);
                    //LastActiveTime = DateTime.Now;
                    var ids = msgs.Where(m => onlineUsers.All(u => u.Id != m.MemberId)).Select(m => m.MemberId);
                    var routeIds = msgs.Where(m => onlineUsers.All(u => u.Id != m.MemberId)).Select(m => m.RouteId);
                    if (ids.Any())
                    {
                        List<int> notCachedIds = new List<int>();
                        foreach (var userId in ids)
                        {
                            var user = App.userList.Where(c => c.Id == userId).FirstOrDefault();
                            if (user != null)
                            {
                                onlineUsers.Add(user);
                            }
                            else
                            {
                                notCachedIds.Add(userId);
                            }
                        }

                        if (notCachedIds.Count > 0)
                        {
                            var rangeUser = ConfigHelper.mapApi.GetOnlineUserInfo(ids).data;
                            var rangeRoute = ConfigHelper.mapApi.GetMapRouteInfo(routeIds).data;
                            App.RouteList.AddRange(rangeRoute);
                            onlineUsers.AddRange(rangeUser);
                            App.userList.AddRange(rangeUser);
                        }
                    }
                    foreach (var user in onlineUsers)
                    {
                        var item = msgs.FirstOrDefault(u => u.MemberId == user.Id);
                        if (item != null)
                        {
                            var route = App.RouteList.Where(c => c.Id == item.RouteId).FirstOrDefault();
                            if (route != null)
                            {
                                user.RouteName = route.Name;
                            }
                            user.LastActiveTime = DateTime.Now;
                            user.RouteId = item.RouteId;
                            
                            user.Point = item.Point;
                            user.IsCompleted = item.IsCompleted;
                            //user.exit = item.exit;
                            user.EndDistance = item.EndDistance;
                            user.IsVirtual = item.MemberId < 0;
                            user.Speed = item.Speed;
                            user.WeightKg = item.WeightKg;
                            user.PreDistance = item.PreDistance;
                            user.CompetitionId = item.Competitionid;
                            user.Saved = item.Saved;
                            user.Power = item.Power;
                            user.HeartRate = item.HeartRate;
                            user.Cadence = item.Cadence;
                            user.TotalTicks = item.TotoalTicks;
                            user.WatcherList = new List<int>();
                            foreach (var o in item.WatchIdList.Split('|'))
                            {
                                if (!string.IsNullOrEmpty(o))
                                {
                                    user.WatcherList.Add(Convert.ToInt32(o));
                                }
                            }
                            user.IsWatcher = user.WatcherList.Contains(item.MemberId);
                            user.CreateTime = DateTime.MaxValue;
                        }
                        else
                        {
                            user.PreDistance = user.EndDistance;
                        }
                    }
                    onlineUsers.RemoveAll(u => u.IsLost);
                }
                catch (Exception ex)
                {
                    Thread.Sleep(3000);
                    Debug.WriteLine(ex.Message);
                    //throw;
                    //return new List<OnlineUser>();
                }
            }

            /// <summary>
            /// 去除重复数据，去除坐标为0的数据
            /// </summary>
            /// <param name="mes"></param>
            private List<ReceiveMsgModel> RemoveExceptionData(List<ReceiveMsgModel> mes)
            {
                var list = mes.ToList();
                //去除自己的数据和命令包
                //mes.RemoveAll(item => item.MemberId == App.CurrentUser.Id || item.Point[0] == 0);
                //list.RemoveAll(item => item.Point[0] == 0 && item.Point[1] == 0);
                list.RemoveAll(item => item.Point[0] == null || item.Point[1] == null);
                //去除重复数据
                list = list.Distinct(new OlineUserComparer()).ToList();

                return list;
            }
            public class NearUserComparer : IEqualityComparer<NearRiderModel>
            {
                public bool Equals(NearRiderModel x, NearRiderModel y)
                {
                    if (x == null)
                        return y == null;
                    return x.Name == y.Name;
                }

                public int GetHashCode(NearRiderModel obj)
                {
                    if (obj == null)
                        return 0;
                    return obj.Name.GetHashCode();
                }
            }

            public class OlineUserComparer : IEqualityComparer<ReceiveMsgModel>
            {
                public bool Equals(ReceiveMsgModel x, ReceiveMsgModel y)
                {
                    if (x == null)
                        return y == null;
                    return x.MemberId == y.MemberId;
                }

                public int GetHashCode(ReceiveMsgModel obj)
                {
                    if (obj == null)
                        return 0;
                    return obj.MemberId.GetHashCode();
                }
            }
        }
    }
}