using Application.Domain.Entities;
using Application.Models;
using Infrastructure.Data;
using Infrastructure.Extensions;
using Infrastructure.Models;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;

namespace FBeeService
{
    public class DeviceService : IDisposable
    {
        private readonly IHostingEnvironment _env;
        private readonly IConfiguration _configuration;
        private readonly IHttpClientFactory _httpClientFactory;
        private readonly IServiceProvider _applicationServices;
        private CancellationTokenSource _tokenSource;
        private static readonly object lockObject = new Object();
        private string _tcpIp;
        private int _tcpPort;
        private byte[] _address;
        private string _addressValue;
        private readonly Dictionary<int, int> _types = new Dictionary<int, int>();
        private readonly ConcurrentDictionary<string, TcpClientWrapper> Clients = new ConcurrentDictionary<string, TcpClientWrapper>();

        public DeviceService(IHostingEnvironment env, IServiceProvider applicationServices, IConfiguration configuration, IHttpClientFactory httpClientFactory)
        {
            this._env = env;
            this._applicationServices = applicationServices;
            this._configuration = configuration;
            this._httpClientFactory = httpClientFactory;
            this._tokenSource = new CancellationTokenSource();
            this._tcpIp = this._configuration["tcp.ip"];
            this._tcpPort = this._configuration.GetValue<int>("tcp.port");
            //this.Connect();
        }

        public void Start()
        {
            Task.Run(async () =>
            {
                while (!_tokenSource.IsCancellationRequested)
                {
                    try
                    {
                        Console.WriteLine("timer ...");
                        Refresh();
                    }
                    catch (Exception ex)
                    {
                        ex.PrintStack();
                    }
                    await Task.Delay(this._configuration.GetValue<int>("timer.seconds") * 1000);
                }
            });
        }

        public void Refresh()
        {
            Console.WriteLine("notify start ...");
            try
            {
                this.CheckConnection();
                //this.SearchAddress();
            }
            catch (Exception ex)
            {
                ex.PrintStack();
            }
            Console.WriteLine("notify end ...");
        }

        #region api

        /// <summary>
        /// 0x81获取当前连接所有设备
        /// </summary>
        /// <param name="sn"></param>
        public void X81(string sn)
        {
            Console.WriteLine($"refresh {sn}");
            this.Write(sn, RequestType.x81, null);
        }

        /// <summary>
        /// 接收当前连接的设备信息
        /// </summary>
        /// <param name="sn"></param>
        /// <param name="data"></param>
        private void X01(string sn, byte[] data)
        {
            using (var ms = new MemoryStream(data))
            {
                var responseType = ms.ReadByte();
                var dataLength = ms.ReadByte();
                var address = ms.ReadHexString(2);
                var endpoint = ms.ReadByte();
                using (var scope = _applicationServices.CreateScope())
                {
                    var profileId = ms.ReadInt();
                    var deviceId = ms.ReadInt();
                    var deviceRepo = scope.ServiceProvider.GetService<IRepository<FBeeDevice>>();
                    var device = deviceRepo.Table().FirstOrDefault(o => o.Sn == sn && o.Address == address);
                    if (device == null)
                    {
                        var deviceType = DeviceId.List.FirstOrDefault(o => o.RawDeviceId == deviceId);
                        device = new FBeeDevice
                        {
                            Sn = sn,
                            Name = deviceType.Name,
                            EName = deviceType.EName,
                            Icon = deviceType.Icon,
                            CategoryNumber = deviceType.RawDeviceId,
                            CategoryName = deviceType.Category
                        };
                        deviceRepo.Add(device);
                    }
                    device.DataType = responseType;
                    device.DataLength = dataLength;
                    device.Address = address;
                    device.Endpoint = endpoint;
                    device.ProfileId = profileId;
                    device.DeviceId = deviceId;
                    device.Status = ms.ReadByte();
                    device.NameLength = ms.ReadByte();
                    device.CName = ms.ReadASIIString(device.NameLength);
                    device.Online = ms.ReadByte();
                    device.IEEE = ms.ReadHexString(8);
                    device.SNLength = ms.ReadByte();
                    device.RawSN = ms.ReadHexString(device.SNLength);
                    device.ZoneType = ms.ReadByte();
                    device.Power = ms.ReadByte();
                    device.Data = ms.ReadHexString(4);
                    device.Safe = ms.ReadHexString(2);
                    device.RawValue = BitConverter.ToString(data);
                    deviceRepo.SaveChanges();
                }
            }
        }

        /// <summary>
        /// 0x95删除指定设备
        /// </summary>
        /// <param name="sn"></param>
        /// <param name="ieee"></param>
        public void X95(string sn, string ieee)
        {
            Console.WriteLine($"delete {ieee} from {sn}");
            this.Clients.TryGetValue(sn, out TcpClientWrapper client);
            using (var scope = _applicationServices.CreateScope())
            {
                var repo = scope.ServiceProvider.GetService<IRepository<FBeeDevice>>();
                var device = repo.ReadOnlyTable().FirstOrDefault(o => o.Online != 0 && o.IEEE == ieee);
                var address = device.Address;
                var list = new List<byte>();
                list.Add(0x0c);
                list.Add(0x02);
                list.AddRange(address.HexToBytes());
                list.AddRange(ieee.HexToBytes());
                list.Add(0x01);
                this.Write(sn, RequestType.x95, list);
            }
        }

        //0x94更改指定设备名
        /// <summary>
        /// 0x82设置指定设备的开关状态
        /// </summary>
        /// <param name="sn"></param>
        /// <param name="ieee"></param>
        /// <param name="status"></param>
        public void X82(string sn, string ieee, byte status)
        {
            using (var scope = _applicationServices.CreateScope())
            {
                var repo = scope.ServiceProvider.GetService<IRepository<FBeeDevice>>();
                var device = repo.ReadOnlyTable().FirstOrDefault(o => o.Sn == sn && o.IEEE == ieee);
                if (device != null)
                {
                    var address = device.Address;
                    var list = new List<byte>();
                    list.Add(0x0d);
                    list.Add(0x02);
                    list.AddRange(address.HexToBytes());
                    list.AddRange(new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 });
                    list.Add(0x01);
                    list.AddRange(new byte[] { 0x00, 0x00 });
                    list.Add(status);
                    this.Write(sn, RequestType.x82, list);
                }
            }
        }

        /// <summary>
        /// 0x07接收指定设备的开关状态
        /// </summary>
        /// <param name="sn"></param>
        /// <param name="data"></param>
        private void X07(string sn, byte[] data)
        {
            using (var ms = new MemoryStream(data))
            {
                var responseType = ms.ReadByte();
                var dataLength = ms.ReadByte();
                var address = ms.ReadHexString(2);
                var endpoint = ms.ReadByte();
                using (var scope = _applicationServices.CreateScope())
                {
                    var deviceRepo = scope.ServiceProvider.GetService<IRepository<FBeeDevice>>();
                    var device = deviceRepo.Table().FirstOrDefault(o => o.Sn == sn && o.Address == address);
                    if (device != null)
                    {
                        device.Power = ms.ReadInt();
                        deviceRepo.SaveChanges();
                    }
                    else
                    {
                        Console.WriteLine($"device {address} hasn't save in database");
                    }
                }
            }
        }

        /// <summary>
        /// 0x83设置指定设备的亮度
        /// </summary>
        /// <param name="sn"></param>
        /// <param name="ieee"></param>
        /// <param name="value">0-255</param>
        public void X83(string sn, string ieee, byte value)
        {
            using (var scope = _applicationServices.CreateScope())
            {
                var repo = scope.ServiceProvider.GetService<IRepository<FBeeDevice>>();
                var device = repo.ReadOnlyTable().FirstOrDefault(o => o.Sn == sn && o.IEEE == ieee);
                if (device != null)
                {
                    var address = device.Address;
                    var list = new List<byte>();
                    list.AddRange(sn.HexToBytes().Reverse());
                    list.Add(RequestType.xfe);
                    list.Add(RequestType.x82);
                    list.Add(0x0d);
                    list.Add(0x02);
                    list.AddRange(address.HexToBytes());
                    list.AddRange(new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 });
                    list.Add(0x01);
                    list.AddRange(new byte[] { 0x00, 0x00 });
                    list.Add(value);
                    list.AddRange(new byte[] { 0x00, 0x00 });
                    this.Write(sn, RequestType.x82, list);
                }
            }
        }

        /// <summary>
        /// 0x29接收指定设备的亮度
        /// </summary>
        /// <param name="sn"></param>
        /// <param name="data"></param>
        private void X29(string sn, byte[] data)
        {
            using (var ms = new MemoryStream(data))
            {
                var responseType = ms.ReadByte();
                var dataLength = ms.ReadByte();
            }
        }

        //0x84
        //0x85

        //0x86
        //0x87
        //0x88
        //0x8d
        //0x96
        //0x8e
        //0x8f
        //0x97
        //0x98
        //0x90
        //0x91
        //0x92
        //0x93
        //0x8a
        //0x8b
        //0x8c
        //0x99
        //0x9a
        //0x9b
        //0x9c
        //0x9d获取网关信息
        public void X9d(string sn)
        {
            this.Write(sn, RequestType.x9d, null);
        }

        /// <summary>
        /// 0x15接收网关信息
        /// </summary>
        /// <param name="sn"></param>
        /// <param name="data"></param>
        private void X15(string sn, byte[] data)
        {
            using (var ms = new MemoryStream(data))
            {
                var responseType = ms.ReadByte();
                var dataLength = ms.ReadByte();
                var version = ms.ReadASIIString(5);
                var snid = ms.ReadHexString(4);
                using (var scope = _applicationServices.CreateScope())
                {
                    var gatewayRepo = scope.ServiceProvider.GetService<IRepository<Gateway>>();
                    var gateway = gatewayRepo.Table().FirstOrDefault(o => o.Sn == sn);
                    if (gateway == null)
                    {
                        Console.WriteLine($"gateway {sn} hasn't save in database");
                    }
                    else
                    {
                        gateway.Version = version;
                        gateway.UserName = ms.ReadASIIString(20);
                        gateway.Password = ms.ReadASIIString(20);
                        gateway.DeviceCount = ms.ReadByte();
                        gateway.GroupCount = ms.ReadByte();
                        gateway.TimerCount = ms.ReadByte();
                        gateway.SceneCount = ms.ReadByte();
                        gateway.TaskCount = ms.ReadByte();
                        var hex = ms.ReadHexString(5);
                        gateway.CompileVersion = ms.ReadHexString(5);
                    }
                    gatewayRepo.SaveChanges();
                }
            }
        }

        //0x9e
        //0x9f
        //0xa0
        //0xa1
        //0xa2
        //0xa3
        //0xa4
        //0xa5
        //0xa8
        //0xa9
        //0xab
        //0xa7
        //0xac
        //0xaf
        //0xb0
        /// <summary>
        /// 0x70设备上报信息
        /// </summary>
        /// <param name="sn"></param>
        /// <param name="data"></param>
        private void X70(string sn, byte[] data)
        {
            using (var ms = new MemoryStream(data))
            {
                var responseType = ms.ReadByte();
                var dataLength = ms.ReadByte();
                var address = ms.ReadHexString(2);
                var endpoint = ms.ReadByte();
                using (var scope = _applicationServices.CreateScope())
                {
                    var deviceRepo = scope.ServiceProvider.GetService<IRepository<FBeeDevice>>();
                    var device = deviceRepo.Table().FirstOrDefault(o => o.Sn == sn && o.Address == address);
                    var clusterId = ms.ReadInt();
                    if (device != null)
                    {
                        var reportCount = ms.ReadByte();
                        var props = new Dictionary<int, byte[]>();
                        for (int i = 0; i < reportCount; i++)
                        {
                            var propId = ms.ReadInt();
                            var propDataTypeValue = ms.ReadByte();
                            int propDataLength;
                            if (Enum.IsDefined(typeof(DataType), propDataTypeValue))
                            {
                                var propDataType = (DataType)propDataTypeValue;
                                if (propDataType == DataType.bitstring || propDataType == DataType.characterstring)
                                {
                                    propDataLength = ms.ReadByte();
                                }
                                else if (propDataType == DataType.longbitstring || propDataType == DataType.longcharacterstring)
                                {
                                    propDataLength = ms.ReadInt();
                                }
                                else if (propDataType == DataType.sequence || propDataType == DataType.set || propDataType == DataType.bag)
                                {
                                    propDataLength = ms.ReadInt();
                                }
                                else if (propDataType == DataType.unknown)
                                {
                                    propDataLength = 0;
                                }
                                else
                                {
                                    propDataLength = Convert.ToInt32(Regex.Match(propDataType.GetName(), @"\d+").Groups[1].Value);
                                }
                            }
                            else
                            {
                                propDataLength = 1;
                            }
                            var propData = ms.Read(propDataLength);
                            props.Add(propId, propData);
                        }
                    }
                }
            }
        }

        //0x72
        //0xb1
        //0xb2
        //0xc1
        //0xc2
        //0xc3
        //0xc4
        //0xc5
        //0x75

        #endregion api

        private void CheckConnection()
        {
            var ips = NetworkInterface.GetAllNetworkInterfaces()
                .Where(nic => nic.OperationalStatus == OperationalStatus.Up && nic.NetworkInterfaceType != NetworkInterfaceType.Loopback)
                .Select(nic => nic.GetIPProperties().UnicastAddresses)
                .SelectMany(o => o.ToList())
                .Select(o => o.Address)
                .Where(o => o.AddressFamily == AddressFamily.InterNetwork)
                .ToList();
            var list = new ConcurrentBag<string>();
            foreach (var ip in ips)
            {
                Console.WriteLine($"search:{ip}");
                var tokenSource = new CancellationTokenSource();
                using (var client = new UdpClient(new IPEndPoint(ip, 0)))
                {
                    var message = Encoding.ASCII.GetBytes("GETIP\r\n");
                    client.Send(message, message.Length, new IPEndPoint(IPAddress.Parse("255.255.255.255"), 9090));
                    Task.Run(() =>
                    {
                        try
                        {
                            var ep = new IPEndPoint(IPAddress.Any, 3702);
                            while (!tokenSource.IsCancellationRequested)
                            {
                                if (client.Available > 0)
                                {
                                    var buffer = client.Receive(ref ep);
                                    var result = Encoding.ASCII.GetString(buffer);
                                    Console.WriteLine(result);
                                    if (!list.Any(o => o == result))
                                    {
                                        list.Add(result);
                                    }
                                }
                            }
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine(ex.Message);
                        }
                    }, tokenSource.Token);
                    Thread.Sleep(1000);
                    tokenSource.Cancel();
                }
            }
            using (var scope = _applicationServices.CreateScope())
            {
                var repo = scope.ServiceProvider.GetService<IRepository<Gateway>>();
                foreach (var result in list)
                {
                    var sn = Regex.Match(result, @"SN:([^\s]*)").Groups[1].Value;
                    var ip = Regex.Match(result, @"IP:([^\s]*)").Groups[1].Value;
                    var gateway = repo.Table().FirstOrDefault(o => o.Sn == sn);
                    if (gateway == null)
                    {
                        gateway = new Gateway { Sn = sn, Ip = ip, Enable = true };
                        repo.Add(gateway);
                        repo.SaveChanges();
                    }
                    else
                    {
                        if (gateway.Ip != ip)
                        {
                            gateway.Ip = ip;
                            repo.Add(gateway);
                        }
                    }
                }
                var gateways = repo.ReadOnlyTable().ToList();
                foreach (var gateway in gateways)
                {
                    if (gateway.Enable)
                    {
                        if (Clients.Any(o => o.Key == gateway.Sn))
                        {
                            Clients.TryGetValue(gateway.Sn, out TcpClientWrapper client);
                            if (client.Ip != gateway.Ip)
                            {
                                this.Connect(client);
                            }
                            else
                            {
                                if (!client.Client.Connected)
                                {
                                    this.Connect(client);
                                }
                            }
                        }
                        else
                        {
                            var client = new TcpClientWrapper { Sn = gateway.Sn, Ip = gateway.Ip, Client = new TcpClient() };
                            Clients.TryAdd(gateway.Sn, client);
                            this.Connect(client);
                        }
                        this.X81(gateway.Sn);
                    }
                    else
                    {
                        if (Clients.Any(o => o.Key == gateway.Sn))
                        {
                            Clients.TryRemove(gateway.Sn, out TcpClientWrapper client);
                            if (client.Client.Connected)
                            {
                                client.Client.Close();
                            }
                        }
                    }
                }
            }
        }

        private void Connect(TcpClientWrapper client)
        {
            try
            {
                if (client != null)
                {
                    client.Client.Dispose();
                    client.Client = new TcpClient();
                }
                Console.WriteLine($"connect {client.Ip} for {client.Sn}");
                client.Client.Connect(client.Ip, 8001);
                new Thread(() =>
                {
                    var stream = client.Client.GetStream();
                    while (client.Client.Connected)
                    {
                        if (stream.DataAvailable)
                        {
                            try
                            {
                                var buffer = new byte[512];
                                var length = stream.Read(buffer);
                                var data = buffer.ToList().Take(length).ToArray();
                                Console.WriteLine($"response:{BitConverter.ToString(data)}");
                                this.Handle(client.Sn, data);
                            }
                            catch (Exception ex)
                            {
                                ex.PrintStack("read stream error");
                            }
                        }
                    }
                }).Start();
                this.X9d(client.Sn);
            }
            catch (Exception ex)
            {
                ex.PrintStack();
            }
        }

        private void Handle(string sn, byte[] data)
        {
            var length = 2 + data[1];
            if (data.Length > length)
            {
                Handle(sn, data.Skip(length).ToArray());
            }
            else
            {
                this.HandleInternal(sn, data.Take(length).ToArray());
            }
        }

        private void HandleInternal(string sn, byte[] data)
        {
            Console.WriteLine($"read:{BitConverter.ToString(data).Replace("-", " ")}");
            var responseType = data[0];
            if (responseType == ResponseType.x15)
            {
                this.X15(sn, data);
            }
            else if (responseType == ResponseType.x01)
            {
                this.X01(sn, data);
            }
            else if (responseType == ResponseType.x07)
            {
                this.X07(sn, data);
            }
            else if (responseType == ResponseType.x70)
            {
                this.X70(sn, data);
            }
            else if (responseType == ResponseType.x72)
            {
                //this.X70(sn, data);
            }
            else
            {
                Console.WriteLine($"{responseType} hasn't handle");
            }
        }

        private void Write(string sn, byte commandType, List<byte> command)
        {
            this.Clients.TryGetValue(sn, out TcpClientWrapper client);
            if (!client.Client.Connected)
            {
                this.Connect(client);
            }
            if (command == null)
            {
                command = new List<byte>();
            }

            var data = new List<byte>();
            data.AddRange(sn.HexToBytes().Reverse());
            data.Add(RequestType.xfe);
            data.Add(commandType);
            data.AddRange(command);

            var head = BitConverter.GetBytes(data.Count() + 2).ToList();
            if (BitConverter.IsLittleEndian)
            {
                head.Reverse();
            }
            head = head.Skip(2).Reverse().ToList();
            var list = new List<byte>();
            list.AddRange(head);
            list.AddRange(data);
            var bytes = list.ToArray();
            Console.WriteLine($"write:{BitConverter.ToString(bytes).Replace("-", " ")}");
            client.Client.GetStream().Write(bytes);
        }

        private NotifyModel CreateModel(string name, string number, string path, string icon)
        {
            var host = string.IsNullOrEmpty(this._configuration["server.ip"]) ? "localhost" : this._configuration["server.ip"];
            var port = Convert.ToInt32(Regex.Match(this._configuration["server.urls"], @"(?<=:)\d+").Value);

            return new NotifyModel
            {
                CategoryName = "电器",
                CategoryNumber = "20",
                Name = name,
                Number = number,
                Icon = icon,
                IsOnline = true,
                BaseUrl = $"http://{host}:{port}/{path}",
                ApiPath = "/api"
            };
        }

        private void NotifyServer(NotifyModel model)
        {
            var url = $"http://{this._configuration["node.url"]}/Notify";
            Console.WriteLine(url);
            var hc = this._httpClientFactory.CreateClient();
            var task = this._httpClientFactory.CreateClient().PostAsync(url, new FormUrlEncodedContent(model.ToList()));
            task.Wait();
            using (var response = task.Result)
            {
                using (var content = response.Content)
                {
                    var value = content.ReadAsStringAsync().Result;
                    Console.WriteLine($"end:{url}:{value}");
                }
            }
        }

        public void Dispose()
        {
            Console.WriteLine("dispose...");
            this._tokenSource.Cancel();
            foreach (var item in Clients)
            {
                if (item.Value.Client != null)
                {
                    item.Value.Client.Dispose();
                }
            }
        }
    }
}